:root {
  /* Light theme bg — soft warm whites with subtle depth */
  --bg-0: #f5f7fb;
  --bg-1: #ffffff;
  --bg-2: #f8fafc;
  --bg-3: #eef2f7;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-elev: rgba(255, 255, 255, 0.95);
  
  /* Neon palette — darkened for AA contrast on white */
  --teal: #00a88f;
  --teal-2: #00c4a7;
  --teal-3: #008a76;
  --teal-glow: rgba(0, 168, 143, 0.25);
  
  --cyan: #0095c8;
  --cyan-glow: rgba(0, 149, 200, 0.25);
  
  --magenta: #d6196b;
  --magenta-glow: rgba(214, 25, 107, 0.25);
  
  --purple: #8a3ee0;
  --purple-glow: rgba(138, 62, 224, 0.25);
  
  --amber: #d97706;
  --amber-glow: rgba(217, 119, 6, 0.25);
  
  --green: #16a34a;
  --green-glow: rgba(22, 163, 74, 0.25);
  
  --red: #dc2626;
  --red-glow: rgba(220, 38, 38, 0.25);
  
  /* Text — inverted dark on light */
  --text: #0f172a;
  --text-2: #334155;
  --text-3: #64748b;
  --text-4: #94a3b8;
  
  /* Borders — bumped opacity since teal is darker now */
  --border: rgba(0, 168, 143, 0.22);
  --border-strong: rgba(0, 168, 143, 0.45);
  
  /* Tier colors */
  --tier-1: #16a34a;
  --tier-2: #0095c8;
  --tier-3: #8a3ee0;
  --tier-4: #ea580c;
  --tier-5: #d6196b;
  
  --display: 'Black Ops One', 'Oswald', system-ui, sans-serif;
  --sans: 'Oswald', system-ui, sans-serif;
  --mono: 'Share Tech Mono', 'Oswald', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

html, body {
  background: var(--bg-0);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 500;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Animated bg grid */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0, 168, 143, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 168, 143, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: 0;
  animation: gridShift 20s linear infinite;
}

@keyframes gridShift {
  from { background-position: 0 0; }
  to { background-position: 50px 50px; }
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0, 168, 143, 0.06), transparent),
    radial-gradient(ellipse 50% 40% at 100% 100%, rgba(214, 25, 107, 0.04), transparent),
    radial-gradient(ellipse 50% 40% at 0% 80%, rgba(0, 149, 200, 0.04), transparent);
  pointer-events: none;
  z-index: 0;
}

/* Scanlines overlay */
.scanlines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(0deg,
    transparent,
    transparent 2px,
    rgba(0, 168, 143, 0.012) 3px,
    transparent 4px
  );
  pointer-events: none;
  z-index: 1;
}

.app { position: relative; z-index: 2; min-height: 100vh; }

/* ============ HEADER ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 14px 32px;
  box-shadow: 0 2px 20px rgba(0, 168, 143, 0.06);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
  position: relative;
}

.brand-logo {
  height: 38px;
  width: auto;
  filter: drop-shadow(0 0 10px var(--teal-glow));
}

.brand-divider {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, transparent, var(--teal), transparent);
}

.brand-name {
  font-family: var(--display);
  font-size: 14px;
  font-weight: 800;
  color: var(--teal);
  letter-spacing: 0.15em;
  line-height: 1;
  text-shadow: 0 0 20px var(--teal-glow);
}

.brand-tag {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  margin-top: 4px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.user-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: rgba(0, 168, 143, 0.08);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--teal);
  font-weight: 700;
  letter-spacing: 0.05em;
  box-shadow: 0 0 12px rgba(0, 168, 143, 0.1);
}

.user-pill::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 8px var(--teal);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.btn-text {
  font-family: var(--display);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-3);
  background: transparent;
  border: 1px solid var(--text-4);
  cursor: pointer;
  padding: 7px 14px;
  border-radius: 6px;
  transition: all 0.2s;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.btn-text:hover {
  color: var(--magenta);
  border-color: var(--magenta);
  box-shadow: 0 0 12px var(--magenta-glow);
}

/* ============ MAIN ============ */
.main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 32px 60px;
}

/* ============ HERO ============ */
.hero-section {
  margin-bottom: 56px;
  position: relative;
  padding: 40px 0;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 11px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 8px 16px;
  border: 1px solid var(--border-strong);
  background: rgba(0, 168, 143, 0.05);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.hero-eyebrow::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 168, 143, 0.2), transparent);
  animation: shine 3s infinite;
}

@keyframes shine {
  0%, 60% { left: -100%; }
  100% { left: 100%; }
}

.hero-eyebrow .dot {
  width: 8px;
  height: 8px;
  background: var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--teal);
  animation: pulse-dot 2s infinite;
}

.hero-title {
  font-family: var(--display);
  font-size: clamp(32px, 5.5vw, 64px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero-title .accent {
  color: var(--teal);
  text-shadow: 0 0 30px var(--teal-glow), 0 0 60px var(--teal-glow);
  position: relative;
  display: inline-block;
}

.hero-title .magenta {
  color: var(--magenta);
  text-shadow: 0 0 30px var(--magenta-glow);
}

.hero-subtitle {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text-2);
  max-width: 640px;
  margin-bottom: 32px;
}

.hero-meta {
  display: flex;
  gap: 24px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-meta-item .dot { color: var(--teal); }

/* ============ TABS (HUD STYLE) ============ */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 40px;
  padding: 6px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow-x: auto;
  scrollbar-width: none;
  width: fit-content;
  box-shadow: 0 0 20px rgba(0, 168, 143, 0.05);
}

.tabs::-webkit-scrollbar { display: none; }

.tab {
  padding: 10px 18px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 11px;
  color: var(--text-3);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.tab:hover { color: var(--text); }

.tab.active {
  color: #ffffff;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  box-shadow: 0 0 20px var(--teal-glow);
}

.tab-num {
  font-family: var(--mono);
  font-size: 9px;
  opacity: 0.7;
  font-weight: 700;
}

/* ============ PANELS ============ */
.panel { display: none; animation: fadeIn 0.4s ease; }
.panel.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ PLAYER CARD (RPG HUD) ============ */
.player-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  padding: 32px;
  background: linear-gradient(135deg, var(--bg-elev), var(--bg-2));
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06), 0 0 0 1px rgba(0, 168, 143, 0.04);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.player-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), var(--cyan), var(--magenta));
  box-shadow: 0 0 20px var(--teal);
}

.player-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 168, 143, 0.06), transparent 60%);
  pointer-events: none;
}

.player-info-block { min-width: 0; position: relative; }

.player-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.player-eyebrow::before {
  content: '►';
  color: var(--teal);
  font-size: 10px;
}

.player-name {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 4px;
  text-transform: uppercase;
  text-shadow: 0 0 20px rgba(0, 168, 143, 0.2);
}

.player-email {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.xp-progress-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.xp-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  font-weight: 700;
  text-transform: uppercase;
}

.xp-row strong {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 900;
  color: var(--teal);
  text-transform: none;
  letter-spacing: -0.02em;
  text-shadow: 0 0 12px var(--teal-glow);
}

.xp-bar {
  height: 14px;
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border);
  border-radius: 0;
  overflow: hidden;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
}

.xp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--cyan));
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow: 0 0 10px var(--teal-glow), inset 0 0 10px rgba(255,255,255,0.2);
}

.xp-bar-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.player-rank-block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  text-align: right;
  border-left: 1px solid var(--border);
  padding-left: 32px;
  min-width: 200px;
  position: relative;
}

.rank-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.rank-display {
  font-family: var(--display);
  font-weight: 900;
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  text-transform: uppercase;
  position: relative;
}

.rank-NOOB        { color: #6b7280; text-shadow: none; }
.rank-NOVICE      { color: #16a34a; text-shadow: none; }
.rank-APPRENTICE  { color: #0095c8; text-shadow: none; }
.rank-JOURNEYMAN  { color: #8a3ee0; text-shadow: none; }
.rank-EXPERT      { color: #ea580c; text-shadow: none; }
.rank-MASTER      { color: var(--amber); text-shadow: none; animation: pulse-glow 2.5s infinite; }
.rank-GRANDMASTER { color: var(--magenta); text-shadow: none; animation: pulse-glow 1.5s infinite; }

@keyframes pulse-glow {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.3); }
}

.rank-next-btn {
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--amber), #f59e0b);
  border: none;
  border-radius: 4px;
  padding: 10px 18px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.15em;
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
  box-shadow: 0 0 20px var(--amber-glow);
  position: relative;
  overflow: hidden;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.rank-next-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px var(--amber-glow);
}

.rank-next-btn::after {
  content: '⚡';
  font-size: 12px;
}

/* ============ STATS GRID (HUD CARDS) ============ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 56px;
}

.stat {
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  position: relative;
  transition: all 0.3s;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.04);
}

.stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent, var(--teal));
  box-shadow: 0 0 10px var(--accent, var(--teal));
}

.stat:hover {
  border-color: var(--accent, var(--teal));
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 168, 143, 0.15);
}

.stat-label {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.stat-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

.stat-num {
  font-family: var(--display);
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--accent, var(--teal));
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.stat-num em {
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.4em;
  color: var(--text-3);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-shadow: none;
}

.stat-num small {
  font-family: var(--mono);
  font-size: 0.4em;
  color: var(--text-3);
  font-weight: 700;
  text-shadow: none;
}

.stat-num.is-rank {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

.stat-meta {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.stat.stat-xp { --accent: var(--amber); }
.stat.stat-skills { --accent: var(--green); }
.stat.stat-progress { --accent: var(--cyan); }
.stat.stat-rank { --accent: var(--purple); }
.stat.stat-rank.clickable { cursor: pointer; }

.stat.stat-rank.clickable:hover::after {
  content: '⚡';
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 14px;
  color: var(--purple);
  animation: pulse-glow 1s infinite;
}

/* ============ SECTION HEADER ============ */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), transparent);
  box-shadow: 0 0 8px var(--teal);
}

.section-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--display);
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
  text-transform: uppercase;
}

.section-title .accent {
  color: var(--teal);
  text-shadow: 0 0 24px var(--teal-glow);
}

.section-meta {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  text-align: right;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
  line-height: 1.6;
}

/* ============ TIP BOX ============ */
.tip-box {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 22px;
  background: rgba(0, 168, 143, 0.05);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  margin-bottom: 32px;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.tip-icon { font-size: 22px; flex-shrink: 0; filter: drop-shadow(0 0 8px var(--teal-glow)); }

.tip-text {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.5;
  font-weight: 500;
}

.tip-text strong {
  color: var(--teal);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--display);
  font-size: 12px;
}

/* ============ ROADMAP STEPPER ============ */
.stepper-section { margin-bottom: 40px; }

.stepper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 32px 24px 24px;
  overflow-x: auto;
  scrollbar-width: thin;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.stepper-track {
  display: flex;
  align-items: flex-start;
  min-width: 720px;
  position: relative;
}

.stepper-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  cursor: pointer;
  transition: all 0.2s;
  padding: 0 4px;
}

.stepper-step:hover .stepper-circle {
  transform: scale(1.1);
}

.stepper-step-num {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--text-4);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.stepper-step.completed .stepper-step-num,
.stepper-step.active .stepper-step-num,
.stepper-step.suggested .stepper-step-num { color: var(--teal); }

.stepper-circle {
  width: 56px;
  height: 56px;
  background: var(--bg-1);
  border: 2px solid var(--text-4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  position: relative;
  z-index: 2;
  transition: all 0.3s;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.stepper-step.completed .stepper-circle {
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  border-color: var(--teal);
  color: #ffffff;
  box-shadow: 0 0 20px var(--teal-glow);
}

.stepper-step.active .stepper-circle {
  background: var(--bg-1);
  border-color: var(--teal);
  color: var(--teal);
  box-shadow: 0 0 24px var(--teal-glow);
  animation: hexPulse 2s infinite;
}

.stepper-step.suggested .stepper-circle {
  border-color: var(--amber);
  color: var(--amber);
  box-shadow: 0 0 18px var(--amber-glow);
  animation: hexPulse 2s infinite;
}

.stepper-step.locked .stepper-circle {
  background: var(--bg-2);
  border-color: var(--text-4);
  color: var(--text-4);
  opacity: 0.6;
}

@keyframes hexPulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.4); }
}

.stepper-line {
  position: absolute;
  top: 45px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--text-4);
  z-index: 1;
}

.stepper-step.completed .stepper-line {
  background: linear-gradient(90deg, var(--teal), var(--cyan));
  box-shadow: 0 0 8px var(--teal-glow);
}

.stepper-step:last-child .stepper-line { display: none; }

.stepper-label {
  font-family: var(--display);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-2);
  margin-top: 14px;
  text-align: center;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stepper-step.locked .stepper-label { color: var(--text-4); }
.stepper-step.completed .stepper-label,
.stepper-step.active .stepper-label { color: var(--teal); }

.stepper-progress {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-3);
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}

.stepper-step.completed .stepper-progress { color: var(--teal); }
.stepper-step.suggested .stepper-progress { color: var(--amber); }

/* ============ GROUP CARDS (BOSS BATTLE STYLE) ============ */
.group-list { display: flex; flex-direction: column; gap: 12px; }

.group-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.group-card:hover {
  border-color: var(--teal);
  box-shadow: 0 0 30px rgba(0, 168, 143, 0.1);
  transform: translateX(4px);
}

.group-card.completed {
  border-color: var(--teal);
  background: linear-gradient(135deg, rgba(0, 168, 143, 0.08), var(--bg-card));
  box-shadow: 0 0 20px rgba(0, 168, 143, 0.08);
}

.group-card.active {
  border-color: var(--cyan);
  box-shadow: 0 0 24px rgba(0, 149, 200, 0.15);
}

.group-card.suggested {
  border-color: var(--amber);
  box-shadow: 0 0 24px var(--amber-glow);
  animation: suggestPulse 3s infinite;
}

@keyframes suggestPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(217, 119, 6, 0.3); }
  50% { box-shadow: 0 0 35px rgba(217, 119, 6, 0.5); }
}

.group-card.expanded {
  border-color: var(--teal);
  box-shadow: 0 0 30px rgba(0, 168, 143, 0.15);
}

.group-card-header {
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 60px 1fr auto auto;
  align-items: center;
  gap: 20px;
  cursor: pointer;
  user-select: none;
  position: relative;
}

.group-num {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 900;
  color: var(--text-4);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.group-card.completed .group-num { color: var(--teal); text-shadow: 0 0 12px var(--teal-glow); }
.group-card.active .group-num { color: var(--cyan); text-shadow: 0 0 12px var(--cyan-glow); }
.group-card.suggested .group-num { color: var(--amber); text-shadow: 0 0 12px var(--amber-glow); }

.group-info { min-width: 0; }

.group-name-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.group-name {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.group-emoji { font-size: 20px; filter: drop-shadow(0 0 4px var(--teal-glow)); }

.group-card.completed .group-name { color: var(--teal); text-shadow: 0 0 12px var(--teal-glow); }

.group-status-badge {
  font-family: var(--display);
  font-size: 9px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 0;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  clip-path: polygon(4px 0, 100% 0, calc(100% - 4px) 100%, 0 100%);
}

.status-completed { color: var(--teal); background: rgba(0, 168, 143, 0.1); }
.status-active { color: var(--cyan); background: rgba(0, 149, 200, 0.1); }
.status-suggested { color: var(--amber); background: rgba(217, 119, 6, 0.1); }
.status-locked { color: var(--text-4); background: rgba(15, 23, 42, 0.03); }
.status-new { color: var(--purple); background: rgba(138, 62, 224, 0.1); }

.group-meta {
  display: flex;
  gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.group-meta strong {
  color: var(--text);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.group-progress-vertical { width: 140px; }

.group-progress-bar {
  height: 6px;
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 6px;
}

.group-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--cyan));
  transition: width 0.5s ease;
  box-shadow: 0 0 8px var(--teal-glow);
}

.group-progress-pct {
  font-family: var(--display);
  font-size: 14px;
  font-weight: 800;
  color: var(--teal);
  text-align: right;
  letter-spacing: -0.01em;
  text-shadow: 0 0 8px var(--teal-glow);
}

.group-toggle {
  font-family: var(--display);
  font-size: 18px;
  color: var(--teal);
  transition: all 0.3s;
  flex-shrink: 0;
  font-weight: 700;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  background: rgba(0, 168, 143, 0.05);
}

.group-card.expanded .group-toggle {
  transform: rotate(180deg);
  background: var(--teal);
  color: #ffffff;
  box-shadow: 0 0 12px var(--teal-glow);
}

/* GROUP BODY */
.group-body {
  display: none;
  padding: 0 24px 28px;
  animation: slideDown 0.3s ease;
}

.group-card.expanded .group-body { display: block; }

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.group-suggestion-banner {
  background: linear-gradient(135deg, rgba(217, 119, 6, 0.12), rgba(217, 119, 6, 0.04));
  border: 1px solid rgba(217, 119, 6, 0.4);
  padding: 14px 18px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.group-suggestion-banner:hover {
  background: rgba(217, 119, 6, 0.15);
  box-shadow: 0 0 20px var(--amber-glow);
  transform: translateX(2px);
}

.group-suggestion-icon {
  font-size: 22px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 6px var(--amber-glow));
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.group-suggestion-content { flex: 1; min-width: 0; }

.group-suggestion-label {
  font-family: var(--display);
  font-size: 9px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.group-suggestion-name {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.group-suggestion-arrow {
  color: var(--amber);
  font-size: 18px;
  flex-shrink: 0;
}

.subgroup { margin-top: 20px; }
.subgroup:first-child { margin-top: 0; }

.subgroup-title {
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.subgroup-progress-text {
  color: var(--text-3);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-family: var(--mono);
}

.skill-row {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
  margin-bottom: 4px;
  background: rgba(15, 23, 42, 0.03);
}

.skill-row:hover {
  background: rgba(0, 168, 143, 0.06);
  border-color: var(--border-strong);
  padding-left: 18px;
}

.skill-row.unlocked {
  background: rgba(0, 168, 143, 0.08);
  border-color: var(--border-strong);
}

.skill-row.unlocked .skill-row-name { color: var(--teal); }

.skill-row-check {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--text-4);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #ffffff;
  font-weight: 700;
  transition: all 0.2s;
  margin: 0 auto;
}

.skill-row.unlocked .skill-row-check {
  background: var(--teal);
  border-color: var(--teal);
  box-shadow: 0 0 10px var(--teal-glow);
}

.skill-row.unlocked .skill-row-check::before {
  content: '✓';
}

.skill-row-name {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  line-height: 1.4;
}

.skill-row-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: var(--mono);
}

.skill-row-tier {
  font-size: 9px;
  font-weight: 700;
  padding: 3px 7px;
  color: white;
  letter-spacing: 0.05em;
}

.skill-row-tier.t1 { background: var(--tier-1); box-shadow: 0 0 6px var(--green-glow); }
.skill-row-tier.t2 { background: var(--tier-2); box-shadow: 0 0 6px var(--cyan-glow); }
.skill-row-tier.t3 { background: var(--tier-3); box-shadow: 0 0 6px var(--purple-glow); }
.skill-row-tier.t4 { background: var(--tier-4); box-shadow: 0 0 6px rgba(234, 88, 12, 0.5); }
.skill-row-tier.t5 { background: var(--tier-5); box-shadow: 0 0 6px var(--magenta-glow); }

.skill-row-xp {
  font-size: 11px;
  font-weight: 700;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
  min-width: 40px;
  text-align: right;
  text-shadow: 0 0 6px var(--amber-glow);
}

.skill-row.suggested {
  background: rgba(217, 119, 6, 0.1);
  border-color: rgba(217, 119, 6, 0.4);
  position: relative;
  animation: suggestPulse 3s infinite;
}

.skill-row.suggested .skill-row-name { color: var(--amber); font-weight: 700; }

/* ============ SKILL TREE ============ */
.tree-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.filter-chip {
  padding: 8px 14px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 10px;
  background: var(--bg-card);
  color: var(--text-3);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.filter-chip:hover { 
  border-color: var(--teal);
  color: var(--teal);
  box-shadow: 0 0 12px rgba(0, 168, 143, 0.2);
}

.filter-chip.active {
  background: var(--teal);
  color: #ffffff;
  border-color: var(--teal);
  box-shadow: 0 0 16px var(--teal-glow);
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.skill-node {
  position: relative;
  padding: 18px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.25s;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.skill-node:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 168, 143, 0.15);
}

.skill-node.unlocked {
  background: linear-gradient(135deg, rgba(0, 168, 143, 0.1), var(--bg-card));
  border-color: var(--teal);
  box-shadow: 0 0 16px rgba(0, 168, 143, 0.1);
}

.skill-node.unlocked::after {
  content: '✓';
  position: absolute;
  top: 14px;
  right: 14px;
  width: 22px;
  height: 22px;
  background: var(--teal);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 13px;
  box-shadow: 0 0 12px var(--teal-glow);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.skill-node.unlocked .skill-name { color: var(--teal); }

.skill-node:not(.unlocked)::after {
  content: '';
  position: absolute;
  top: 14px;
  right: 14px;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--text-4);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.skill-node-head {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  font-family: var(--mono);
}

.tier-tag {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  background: var(--tier-color, var(--teal));
  color: white;
}

.tier-1 .tier-tag { background: var(--tier-1); box-shadow: 0 0 6px var(--green-glow); }
.tier-2 .tier-tag { background: var(--tier-2); box-shadow: 0 0 6px var(--cyan-glow); }
.tier-3 .tier-tag { background: var(--tier-3); box-shadow: 0 0 6px var(--purple-glow); }
.tier-4 .tier-tag { background: var(--tier-4); box-shadow: 0 0 6px rgba(234, 88, 12, 0.5); }
.tier-5 .tier-tag { background: var(--tier-5); box-shadow: 0 0 6px var(--magenta-glow); }

.xp-tag {
  font-size: 10px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.05em;
  text-shadow: 0 0 6px var(--amber-glow);
}

.skill-name {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 6px;
  padding-right: 28px;
}

.skill-group {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-4);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ============ LEADERBOARD ============ */
.leaderboard {
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}

.lb-header {
  display: grid;
  grid-template-columns: 60px 1fr 100px 100px 90px 130px;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(0, 168, 143, 0.05);
  border-bottom: 1px solid var(--border-strong);
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.lb-row {
  display: grid;
  grid-template-columns: 60px 1fr 100px 100px 90px 130px;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  align-items: center;
  transition: all 0.2s;
}

.lb-row:last-child { border-bottom: none; }

.lb-row:hover { 
  background: rgba(0, 168, 143, 0.04);
}

.lb-row.is-self { 
  background: linear-gradient(90deg, rgba(0, 168, 143, 0.08), transparent);
  border-left: 3px solid var(--teal);
  padding-left: 17px;
  box-shadow: inset 0 0 20px rgba(0, 168, 143, 0.05);
}

.lb-row.is-self::after {
  content: 'YOU';
  position: absolute;
  right: 20px;
  background: var(--teal);
  color: #ffffff;
  font-family: var(--display);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  padding: 3px 8px;
  display: none;
}

.rank-medal {
  font-family: var(--display);
  font-weight: 900;
  font-size: 22px;
  color: var(--text-4);
  line-height: 1;
  letter-spacing: -0.02em;
}

.rank-1 { color: var(--amber); text-shadow: 0 0 16px var(--amber-glow); }
.rank-2 { color: #c0c0c0; text-shadow: 0 0 12px rgba(192, 192, 192, 0.5); }
.rank-3 { color: #cd7f32; text-shadow: 0 0 12px rgba(205, 127, 50, 0.5); }

.lb-name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.lb-email {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  margin-top: 4px;
  letter-spacing: 0.05em;
}

.lb-num {
  font-family: var(--display);
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.lb-num small {
  font-family: var(--mono);
  font-size: 0.55em;
  color: var(--text-3);
  font-weight: 700;
}

.lb-rank-tag {
  font-family: var(--display);
  font-size: 9px;
  font-weight: 700;
  padding: 4px 10px;
  letter-spacing: 0.15em;
  display: inline-block;
  border: 1px solid currentColor;
  text-transform: uppercase;
  clip-path: polygon(4px 0, 100% 0, calc(100% - 4px) 100%, 0 100%);
}

/* ============ LOGIN SCREEN ============ */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  z-index: 2;
}

.login-box {
  width: 100%;
  max-width: 460px;
  padding: 44px 36px;
  background: linear-gradient(135deg, var(--bg-elev), var(--bg-2));
  border: 1px solid var(--border-strong);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0, 168, 143, 0.12), 0 2px 8px rgba(15, 23, 42, 0.06);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.login-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), var(--cyan), var(--magenta));
  box-shadow: 0 0 20px var(--teal);
}

.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}

.login-logo img {
  height: 56px;
  filter: drop-shadow(0 0 16px var(--teal-glow));
}

.login-eyebrow {
  text-align: center;
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 14px;
  text-shadow: 0 0 12px var(--teal-glow);
}

.login-title {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 900;
  color: var(--text);
  text-align: center;
  letter-spacing: -0.01em;
  line-height: 1.05;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.login-title .accent {
  color: var(--teal);
  text-shadow: 0 0 24px var(--teal-glow);
}

.login-subtitle {
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 32px;
  line-height: 1.5;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

.input-label {
  display: block;
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 8px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.input {
  width: 100%;
  padding: 14px 18px;
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  transition: all 0.2s;
  letter-spacing: 0.05em;
}

.input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 16px rgba(0, 168, 143, 0.25);
}

.btn-login {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  color: #ffffff;
  font-family: var(--display);
  font-weight: 800;
  font-size: 13px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  box-shadow: 0 4px 14px var(--teal-glow);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.btn-login:hover {
  transform: scale(1.02);
  box-shadow: 0 0 30px var(--teal-glow);
  filter: brightness(1.1);
}

.btn-login:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.message {
  font-family: var(--mono);
  font-size: 11px;
  padding: 12px 16px;
  margin-top: 16px;
  text-align: center;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid;
}

.message.success {
  color: var(--teal);
  background: rgba(0, 168, 143, 0.05);
  border-color: var(--teal);
}

.message.error {
  color: var(--red);
  background: rgba(220, 38, 38, 0.08);
  border-color: var(--red);
}

.login-footer {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.login-footer-text {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  line-height: 1.7;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.login-footer-link {
  color: var(--teal);
  font-family: var(--display);
  font-weight: 700;
  font-size: 10px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.login-footer-link:hover {
  color: var(--magenta);
  text-shadow: 0 0 12px var(--magenta-glow);
}

/* ============ RESOURCE SECTION ============ */
.resource-section {
  margin: 56px 0 24px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  position: relative;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}

.resource-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--teal), transparent);
  box-shadow: 0 0 12px var(--teal-glow);
}

.resource-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.resource-title {
  font-family: var(--display);
  font-size: 26px;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.resource-title .accent {
  color: var(--teal);
  text-shadow: 0 0 20px var(--teal-glow);
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

/* Featured single-card mode: ~50% width, centered, horizontal layout */
.resource-grid:has(.resource-featured) {
  grid-template-columns: 1fr;
  max-width: 520px;
  margin: 0 auto;
}

.resource-card.resource-featured {
  padding: 28px 28px 26px;
}

.resource-card.resource-featured .resource-link-area {
  display: flex;
  align-items: center;
  gap: 22px;
}

.resource-card.resource-featured .resource-icon {
  flex-shrink: 0;
  margin-bottom: 0;
  width: 56px;
  height: 56px;
  font-size: 22px;
}

.resource-card.resource-featured .resource-body {
  flex: 1;
  min-width: 0;
}

.resource-card.resource-featured .resource-name {
  font-size: 18px;
  margin-bottom: 6px;
  padding-right: 32px;
  letter-spacing: 0.04em;
}

.resource-card.resource-featured .resource-desc {
  font-size: 13px;
}

.resource-card {
  display: block;
  padding: 22px 20px 18px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s, background 0.25s;
  position: relative;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

/* accent line top — animates full-width on hover/completed */
.resource-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 32px;
  height: 2px;
  background: var(--teal);
  transition: width 0.3s;
  z-index: 1;
}

.resource-card:hover {
  border-color: var(--teal);
  background: linear-gradient(180deg, rgba(0, 168, 143, 0.04) 0%, var(--bg-1) 100%);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 168, 143, 0.12);
}
.resource-card:hover::before { width: 100%; }

/* COMPLETED state — done state with subtle teal tint */
.resource-card.completed {
  border-color: var(--border-strong);
  background: linear-gradient(180deg, rgba(0, 168, 143, 0.06) 0%, var(--bg-1) 100%);
}
.resource-card.completed::before { width: 100%; }

/* checkbox tick — top-right corner */
.resource-check {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--text-4);
  background: var(--bg-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: white;
  font-weight: 800;
  transition: all 0.2s;
  cursor: pointer;
  z-index: 3;
}
.resource-check:hover {
  border-color: var(--teal);
  background: rgba(0, 168, 143, 0.08);
}
.resource-card.completed .resource-check {
  background: var(--teal);
  border-color: var(--teal);
}
.resource-card.completed .resource-check::before { content: '✓'; }

/* clickable link area — wraps icon/name/desc, opens external link */
.resource-link-area {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.resource-icon {
  font-size: 26px;
  margin-bottom: 12px;
  line-height: 1;
  transition: transform 0.25s;
  display: inline-block;
}
.resource-card:hover .resource-icon { transform: scale(1.08); }

.resource-name {
  font-family: var(--display);
  font-weight: 800;
  font-size: 14px;
  color: var(--text);
  letter-spacing: 0.03em;
  line-height: 1.25;
  text-transform: uppercase;
  margin-bottom: 6px;
  padding-right: 32px; /* space for checkbox */
}

.resource-desc {
  font-size: 12px;
  color: var(--text-2);
  font-weight: 500;
  font-family: var(--sans);
  letter-spacing: 0;
  line-height: 1.4;
}

.resource-card.resource-youtube {
  background: linear-gradient(180deg, rgba(214, 25, 107, 0.05) 0%, var(--bg-1) 100%);
  border-color: rgba(214, 25, 107, 0.35);
}
.resource-card.resource-youtube::before {
  background: var(--magenta);
}
.resource-card.resource-youtube:hover {
  border-color: var(--magenta);
  background: linear-gradient(180deg, rgba(214, 25, 107, 0.1) 0%, var(--bg-1) 100%);
  box-shadow: 0 8px 24px rgba(214, 25, 107, 0.15);
}
.resource-card.resource-youtube.completed {
  background: linear-gradient(180deg, rgba(214, 25, 107, 0.08) 0%, var(--bg-1) 100%);
  border-color: var(--magenta);
}
.resource-card.resource-youtube .resource-icon {
  color: white;
  font-size: 16px;
  font-weight: 700;
  background: var(--magenta);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-left: 2px;
}
.resource-card.resource-youtube .resource-name { color: var(--magenta); }
.resource-card.resource-youtube .resource-check:hover {
  border-color: var(--magenta);
  background: rgba(214, 25, 107, 0.08);
}
.resource-card.resource-youtube.completed .resource-check {
  background: var(--magenta);
  border-color: var(--magenta);
}

@media (max-width: 640px) {
  .resource-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .resource-grid:has(.resource-featured) { max-width: 100%; }
  .resource-card { padding: 18px 14px 14px; }
  .resource-name { font-size: 13px; padding-right: 28px; }
  .resource-desc { font-size: 11px; }
  .resource-check { width: 20px; height: 20px; top: 10px; right: 10px; }
  
  .resource-card.resource-featured { padding: 20px 16px; }
  .resource-card.resource-featured .resource-link-area { gap: 14px; }
  .resource-card.resource-featured .resource-icon { width: 44px; height: 44px; font-size: 18px; }
  .resource-card.resource-featured .resource-name { font-size: 15px; padding-right: 28px; }
  .resource-card.resource-featured .resource-desc { font-size: 12px; }
}

/* ============ FOOTER ============ */
.app-footer {
  margin-top: 80px;
  padding: 32px;
  border-top: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.04);
}

.app-footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.app-footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-footer-brand img {
  height: 28px;
  filter: drop-shadow(0 0 8px var(--teal-glow));
}

.app-footer-text {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

.app-footer-text a {
  color: var(--teal);
  font-weight: 700;
  text-decoration: none;
}

.app-footer-meta {
  font-family: var(--display);
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.app-footer-meta .accent { color: var(--teal); }

/* ============ MODAL ============ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 17, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.show { display: flex; }

.modal {
  background: linear-gradient(135deg, var(--bg-elev), var(--bg-2));
  max-width: 540px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 0 80px rgba(0, 168, 143, 0.25), inset 0 0 80px rgba(0, 168, 143, 0.03);
  border: 1px solid var(--border-strong);
  animation: modalIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.modal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), var(--cyan), var(--magenta));
  box-shadow: 0 0 20px var(--teal);
}

@keyframes modalIn {
  from { transform: scale(0.94) translateY(20px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.modal-header {
  padding: 32px 36px 16px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border-strong);
  background: rgba(15, 23, 42, 0.05);
  color: var(--text-3);
  cursor: pointer;
  font-size: 18px;
  font-family: var(--sans);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  font-weight: 700;
}

.modal-close:hover {
  background: var(--magenta);
  color: white;
  border-color: var(--magenta);
  box-shadow: 0 0 16px var(--magenta-glow);
}

.modal-eyebrow {
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.modal-title {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.1;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.modal-title .accent { color: var(--teal); text-shadow: 0 0 20px var(--teal-glow); }

.modal-subtitle {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.5;
  font-weight: 500;
}

.rank-progress {
  margin: 24px 36px;
  padding: 24px;
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border-strong);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.rank-progress-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  justify-content: center;
}

.rank-progress-row .rank-display { font-size: 22px; }

.rank-arrow {
  font-family: var(--display);
  font-size: 22px;
  color: var(--teal);
  font-weight: 700;
  text-shadow: 0 0 8px var(--teal-glow);
  animation: arrowPulse 1.5s infinite;
}

@keyframes arrowPulse {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(4px); }
}

.xp-needed {
  text-align: center;
  padding: 18px;
  background: rgba(15, 23, 42, 0.04);
  border: 1px dashed var(--border-strong);
}

.xp-needed-label {
  font-family: var(--display);
  font-size: 10px;
  color: var(--text-3);
  font-weight: 700;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.xp-needed-value {
  font-family: var(--display);
  font-size: 36px;
  font-weight: 900;
  color: var(--amber);
  letter-spacing: -0.02em;
  line-height: 1;
  text-shadow: 0 0 20px var(--amber-glow);
}

.xp-needed-value small {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-3);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-shadow: none;
}

.rank-progress-bar {
  height: 8px;
  background: rgba(15, 23, 42, 0.08);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-top: 16px;
}

.rank-progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--cyan));
  transition: width 0.6s ease;
  box-shadow: 0 0 10px var(--teal-glow);
}

.suggested-section { padding: 12px 36px 24px; }

.suggested-title {
  font-family: var(--display);
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.suggested-title .accent { color: var(--amber); text-shadow: 0 0 12px var(--amber-glow); }

.suggestion {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 14px 18px;
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid var(--border);
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.2s;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.suggestion:hover {
  border-color: var(--amber);
  background: rgba(217, 119, 6, 0.08);
  transform: translateX(4px);
  box-shadow: 0 0 20px var(--amber-glow);
}

.suggestion-num {
  font-family: var(--display);
  font-weight: 900;
  font-size: 22px;
  color: var(--amber);
  width: 32px;
  flex-shrink: 0;
  letter-spacing: -0.02em;
  text-shadow: 0 0 10px var(--amber-glow);
}

.suggestion-content { flex: 1; min-width: 0; }

.suggestion-name {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 6px;
}

.suggestion-meta {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  font-family: var(--mono);
}

.suggestion-arrow {
  color: var(--amber);
  font-size: 18px;
  flex-shrink: 0;
  font-weight: 700;
}

.modal-cta {
  width: 100%;
  margin-top: 16px;
  padding: 14px;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  color: #ffffff;
  font-family: var(--display);
  font-weight: 800;
  font-size: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  box-shadow: 0 0 20px var(--teal-glow);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.modal-cta:hover {
  transform: scale(1.02);
  box-shadow: 0 0 30px var(--teal-glow);
}

.modal-footer {
  padding: 14px 36px 24px;
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  border-top: 1px solid var(--border);
  margin-top: 8px;
  letter-spacing: 0.05em;
}

/* ============ TOAST (LEVEL UP STYLE) ============ */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 16px 24px;
  background: var(--bg-1);
  color: var(--text);
  font-family: var(--display);
  font-size: 12px;
  font-weight: 700;
  z-index: 100;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.15);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { 
  border-color: var(--teal); 
  color: var(--teal);
  box-shadow: 0 0 30px var(--teal-glow);
}
.toast.error { 
  border-color: var(--red); 
  color: var(--red);
  box-shadow: 0 0 30px var(--red-glow);
}

/* ============ LOADING ============ */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  color: var(--teal);
  font-family: var(--display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.loading::before {
  content: '';
  width: 14px;
  height: 14px;
  margin-right: 12px;
  border: 1.5px solid var(--border);
  border-top-color: var(--teal);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  box-shadow: 0 0 10px var(--teal-glow);
}

@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  text-align: center;
  padding: 80px 24px;
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 20px;
  opacity: 0.5;
}

.empty-state-title {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.empty-state-text {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.setup-notice {
  background: rgba(217, 119, 6, 0.08);
  border: 1px solid rgba(217, 119, 6, 0.3);
  padding: 16px 20px;
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--amber);
}

.setup-notice h3 {
  font-family: var(--display);
  color: var(--amber);
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.setup-notice code {
  background: rgba(15, 23, 42, 0.05);
  padding: 2px 6px;
  font-size: 10px;
  color: var(--teal);
}

/* ============ HIGHLIGHT NAVIGATION ============ */
@keyframes highlightSkill {
  0%, 100% { box-shadow: none; }
  50% { box-shadow: 0 0 30px var(--amber-glow), inset 0 0 20px rgba(217, 119, 6, 0.1); border-color: var(--amber); }
}

.skill-row.highlight,
.skill-node.highlight {
  animation: highlightSkill 1.5s ease-in-out 2;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .header { padding: 12px 16px; }
  .brand-divider, .brand-tag { display: none; }
  .main { padding: 24px 16px 40px; }
  .hero-title { font-size: 28px; }
  .stat-num { font-size: 28px; }
  .player-card { 
    grid-template-columns: 1fr;
    padding: 24px;
  }
  .player-rank-block { 
    border-left: none;
    border-top: 1px solid var(--border);
    padding: 20px 0 0;
    align-items: flex-start;
    text-align: left;
  }
  .player-name { font-size: 22px; }
  .group-card-header {
    grid-template-columns: 40px 1fr auto;
    gap: 12px;
    padding: 16px;
  }
  .group-progress-vertical { display: none; }
  .group-name { font-size: 14px; }
  .lb-header, .lb-row {
    grid-template-columns: 40px 1fr 60px 70px;
    gap: 8px;
    padding: 12px;
    font-size: 11px;
  }
  .lb-skills, .lb-rank-col { display: none; }
  .skill-grid { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .section-meta { text-align: left; }
}

/* ============================================================
   SPRINT 2 · UX POLISH
   ============================================================ */

/* ============ STICKY SELF-RANK BANNER ============ */
.self-rank-sticky {
  position: sticky;
  bottom: 16px;
  margin: 16px auto 0;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 20px;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--teal);
  box-shadow: 0 8px 32px rgba(0, 168, 143, 0.25), 0 0 0 1px rgba(0, 168, 143, 0.1);
  color: #ffffff;
  font-family: var(--display);
  cursor: pointer;
  z-index: 10;
  max-width: max-content;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform 0.2s, box-shadow 0.2s;
  animation: srsSlideUp 0.3s ease;
}

.self-rank-sticky[hidden] { display: none; }

.self-rank-sticky:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 168, 143, 0.35);
}

.self-rank-sticky:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.srs-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--teal);
  text-transform: uppercase;
}

.srs-medal {
  font-size: 16px;
  font-weight: 900;
  color: var(--amber);
  letter-spacing: -0.02em;
  min-width: 28px;
}

.srs-name {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.srs-xp {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--teal);
  font-weight: 700;
}

.srs-arrow {
  font-size: 14px;
  color: var(--teal);
  margin-left: 4px;
}

@keyframes srsSlideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Highlight pulse khi click sticky → scroll về self row */
.lb-row.is-self.flash {
  animation: selfFlash 1.2s ease;
}

@keyframes selfFlash {
  0%, 100% { background: linear-gradient(90deg, rgba(0, 168, 143, 0.08), transparent); }
  30% { background: linear-gradient(90deg, rgba(0, 168, 143, 0.32), rgba(0, 168, 143, 0.08)); }
}

/* ============ BOTTOM NAV (MOBILE) ============ */
@media (max-width: 640px) {
  .tabs {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    margin: 0;
    padding: 8px 6px calc(8px + env(safe-area-inset-bottom));
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: none;
    border-top: 1px solid var(--border-strong);
    border-radius: 0;
    box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.08);
    z-index: 40;
    width: 100%;
    display: flex;
    justify-content: space-around;
    overflow-x: visible;
  }

  .tab {
    flex: 1;
    flex-direction: column;
    gap: 2px;
    padding: 8px 4px;
    font-size: 10px;
    border-radius: 6px;
    letter-spacing: 0.1em;
    min-width: 0;
  }

  .tab-num { display: none; }

  .tab.active {
    box-shadow: 0 0 12px var(--teal-glow);
  }

  /* Chừa chỗ cho bottom nav + sticky rank không bị che */
  .main { padding-bottom: 96px; }
  .self-rank-sticky { bottom: 80px; }
  .app-footer { margin-bottom: 60px; }

  /* Toast cũng nâng lên trên bottom nav */
  .toast { bottom: 80px; right: 16px; left: 16px; }
}

/* ============ FOCUS-VISIBLE: KEYBOARD NAVIGATION ============ */
.tab:focus-visible,
.skill-node:focus-visible,
.lb-row:focus-visible,
.resource-card:focus-visible,
.group-card-header:focus-visible,
.filter-chip:focus-visible,
.suggestion:focus-visible,
.btn-text:focus-visible,
.rank-next-btn:focus-visible,
.modal-cta:focus-visible,
.modal-close:focus-visible,
.btn-login:focus-visible,
.stat.clickable:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skill node cần tabindex để focus được — style giống hover */
.skill-node:focus-visible {
  border-color: var(--teal);
  transform: translateY(-2px);
}

/* ============ ONBOARDING TOUR ============ */
.tour-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(2px);
  z-index: 150;
  animation: fadeIn 0.3s ease;
}

.tour-spotlight {
  position: fixed;
  z-index: 151;
  pointer-events: none;
  border-radius: 8px;
  box-shadow: 0 0 0 4px var(--teal), 0 0 0 9999px rgba(15, 23, 42, 0.55), 0 0 40px var(--teal-glow);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.tour-tooltip {
  position: fixed;
  z-index: 152;
  max-width: 320px;
  padding: 20px 22px;
  background: var(--bg-1);
  border: 1px solid var(--teal);
  box-shadow: 0 12px 40px rgba(0, 168, 143, 0.25);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  animation: srsSlideUp 0.4s ease;
}

.tour-step {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.tour-title {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.tour-text {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.5;
  margin-bottom: 18px;
}

.tour-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.tour-skip {
  background: transparent;
  border: none;
  font-family: var(--display);
  font-size: 10px;
  color: var(--text-3);
  font-weight: 700;
  letter-spacing: 0.15em;
  cursor: pointer;
  text-transform: uppercase;
  padding: 6px 4px;
}

.tour-skip:hover { color: var(--magenta); }

.tour-next {
  padding: 9px 18px;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  color: #ffffff;
  font-family: var(--display);
  font-weight: 800;
  font-size: 11px;
  border: none;
  cursor: pointer;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  box-shadow: 0 0 16px var(--teal-glow);
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  transition: transform 0.2s;
}

.tour-next:hover { transform: scale(1.04); }
.tour-next:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

@media (max-width: 640px) {
  .tour-tooltip { max-width: calc(100vw - 32px); }
}

/* ============ PREFERS-REDUCED-MOTION ============ */
/* Tắt mọi animation trang trí khi user yêu cầu giảm chuyển động (OS setting) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  /* Các animation chạy vô hạn — dừng hẳn, không chỉ rút ngắn */
  body::before,
  .user-pill::before,
  .rank-arrow,
  .pulse-dot {
    animation: none !important;
  }

  /* Background grid vẫn giữ static, không scroll */
  body::before { background-position: 0 0 !important; }

  /* Tour spotlight không transition */
  .tour-spotlight { transition: none !important; }

  /* Toast và modal vẫn xuất hiện, không animate */
  .modal, .tour-tooltip, .self-rank-sticky { animation: none !important; }
}


/* ============================================================
   SPRINT 3 · GAMIFICATION DEEP
   ============================================================ */

/* ============ DAILY ROW (Quest + Streak side-by-side) ============ */
.daily-row {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 16px;
  margin: 32px 0;
}

@media (max-width: 768px) {
  .daily-row { grid-template-columns: 1fr; }
}

/* ============ DAILY QUEST ============ */
.daily-quest {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  background: linear-gradient(135deg, rgba(217, 119, 6, 0.08), rgba(217, 119, 6, 0.02));
  border: 1px solid var(--amber);
  cursor: pointer;
  overflow: hidden;
  text-align: left;
  font-family: var(--sans);
  color: inherit;
  width: 100%;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 24px rgba(217, 119, 6, 0.12);
}

.daily-quest[hidden] { display: none; }

.daily-quest:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(217, 119, 6, 0.22);
}

.daily-quest:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

.daily-quest-glow {
  position: absolute;
  top: -50%;
  left: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(217, 119, 6, 0.18), transparent 70%);
  pointer-events: none;
  animation: dqGlow 4s ease-in-out infinite;
}

@keyframes dqGlow {
  0%, 100% { transform: translateX(0); opacity: 0.6; }
  50% { transform: translateX(40%); opacity: 1; }
}

.daily-quest-content { flex: 1; position: relative; min-width: 0; }

.daily-quest-eyebrow {
  font-family: var(--display);
  font-size: 10px;
  font-weight: 800;
  color: var(--amber);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 6px;
  text-shadow: 0 0 12px var(--amber-glow);
}

.daily-quest-name {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.daily-quest-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.daily-quest-tier {
  padding: 3px 8px;
  background: var(--amber);
  color: #ffffff;
  letter-spacing: 0.1em;
}

.daily-quest-xp {
  color: var(--amber);
  letter-spacing: 0.05em;
}

.daily-quest-countdown {
  margin-left: auto;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

.daily-quest-arrow {
  font-size: 24px;
  color: var(--amber);
  font-weight: 700;
  position: relative;
  text-shadow: 0 0 12px var(--amber-glow);
  flex-shrink: 0;
}

/* ============ STREAK CARD ============ */
.streak-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: linear-gradient(135deg, var(--bg-elev), var(--bg-2));
  border: 1px solid var(--border-strong);
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.streak-card.is-hot {
  border-color: var(--red);
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.06), var(--bg-2));
  box-shadow: 0 0 24px rgba(220, 38, 38, 0.15);
}

.streak-icon {
  font-size: 36px;
  line-height: 1;
  filter: grayscale(1);
  opacity: 0.5;
  transition: filter 0.3s, opacity 0.3s;
}

.streak-card.is-hot .streak-icon {
  filter: none;
  opacity: 1;
  animation: streakFlame 1.6s ease-in-out infinite;
}

@keyframes streakFlame {
  0%, 100% { transform: scale(1) rotate(-2deg); }
  50% { transform: scale(1.08) rotate(2deg); }
}

.streak-info { flex: 1; min-width: 0; }

.streak-num {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 900;
  color: var(--text);
  line-height: 1;
  letter-spacing: -0.03em;
}

.streak-card.is-hot .streak-num {
  color: var(--red);
  text-shadow: 0 0 16px var(--red-glow);
}

.streak-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  font-weight: 700;
  letter-spacing: 0.2em;
  margin-top: 4px;
  text-transform: uppercase;
}

.streak-best {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-3);
  text-align: right;
  letter-spacing: 0.15em;
  line-height: 1.4;
  padding-left: 10px;
  border-left: 1px solid var(--border);
}

.streak-best strong {
  font-family: var(--display);
  font-size: 16px;
  color: var(--amber);
  font-weight: 900;
  letter-spacing: -0.02em;
}

/* ============ ACHIEVEMENTS ============ */
.achievements-section {
  margin: 40px 0;
}

.achievements-title {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-top: 4px;
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}

.achievement-card {
  position: relative;
  padding: 16px 12px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  text-align: center;
  cursor: help;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.achievement-card.locked {
  opacity: 0.4;
  filter: grayscale(1);
}

.achievement-card.earned {
  border-color: var(--teal);
  background: linear-gradient(180deg, rgba(0, 168, 143, 0.06), var(--bg-1));
  box-shadow: 0 0 16px rgba(0, 168, 143, 0.1);
}

.achievement-card.earned:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 168, 143, 0.18);
}

.achievement-icon {
  font-size: 32px;
  line-height: 1;
  margin-bottom: 8px;
}

.achievement-name {
  font-family: var(--display);
  font-size: 11px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.2;
  margin-bottom: 4px;
}

.achievement-card.locked .achievement-name { color: var(--text-3); }

.achievement-desc {
  font-family: var(--sans);
  font-size: 10px;
  color: var(--text-3);
  line-height: 1.3;
}

.achievement-card.earned::before {
  content: '✓';
  position: absolute;
  top: 6px;
  right: 8px;
  font-size: 11px;
  font-weight: 900;
  color: var(--teal);
}

/* Achievement Unlock Modal (popup giữa màn hình) */
.ach-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 210;
  padding: 20px;
  animation: fadeIn 0.25s ease;
}

.ach-popup-overlay[hidden] { display: none; }

.ach-popup {
  position: relative;
  max-width: 380px;
  width: 100%;
  padding: 36px 32px 28px;
  background: linear-gradient(135deg, var(--bg-elev), var(--bg-2));
  border: 2px solid var(--teal);
  text-align: center;
  overflow: hidden;
  animation: achPopIn 0.5s cubic-bezier(0.16, 1.2, 0.3, 1);
  box-shadow: 0 0 100px var(--teal-glow), 0 0 0 1px rgba(0, 168, 143, 0.2);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

@keyframes achPopIn {
  from { transform: scale(0.6) rotate(-4deg); opacity: 0; }
  to { transform: scale(1) rotate(0); opacity: 1; }
}

.ach-popup-burst {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, var(--teal-glow), transparent 70%);
  animation: achBurst 1.2s ease-out;
  pointer-events: none;
}

@keyframes achBurst {
  from { transform: translate(-50%, -50%) scale(0); opacity: 1; }
  to { transform: translate(-50%, -50%) scale(2.5); opacity: 0; }
}

.ach-popup-eyebrow {
  position: relative;
  font-family: var(--display);
  font-size: 10px;
  font-weight: 800;
  color: var(--teal);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 16px;
  text-shadow: 0 0 16px var(--teal-glow);
}

.ach-popup-icon {
  position: relative;
  font-size: 72px;
  line-height: 1;
  margin-bottom: 14px;
  animation: achIconFloat 2s ease-in-out infinite;
}

@keyframes achIconFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.ach-popup-name {
  position: relative;
  font-family: var(--display);
  font-size: 24px;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.ach-popup-desc {
  position: relative;
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 24px;
  line-height: 1.5;
}

.ach-popup-close {
  position: relative;
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  color: #ffffff;
  font-family: var(--display);
  font-weight: 800;
  font-size: 12px;
  border: none;
  cursor: pointer;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  box-shadow: 0 0 24px var(--teal-glow);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: transform 0.2s;
}

.ach-popup-close:hover { transform: scale(1.05); }
.ach-popup-close:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* ============ ACTIVITY FEED ============ */
.activity-section { margin: 40px 0; }

.activity-title {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-top: 4px;
}

.activity-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 12px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.activity-item {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  gap: 12px;
  padding: 10px 14px;
  align-items: center;
  background: var(--bg-1);
  border: 1px solid var(--border);
  font-size: 12px;
  transition: border-color 0.2s, background 0.2s;
}

.activity-item.is-self {
  border-color: var(--teal);
  background: rgba(0, 168, 143, 0.04);
}

.activity-item:hover { border-color: var(--border-strong); }

.activity-avatar {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  color: #ffffff;
  font-family: var(--display);
  font-weight: 800;
  font-size: 11px;
  letter-spacing: -0.02em;
}

.activity-item.is-self .activity-avatar {
  background: linear-gradient(135deg, var(--amber), var(--magenta));
}

.activity-text {
  font-family: var(--sans);
  color: var(--text-2);
  line-height: 1.4;
  min-width: 0;
}

.activity-name {
  font-weight: 700;
  color: var(--text);
}

.activity-skill {
  color: var(--teal);
  font-weight: 600;
}

.activity-time {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  white-space: nowrap;
  letter-spacing: 0.05em;
}

/* ============ COMPARE MODAL ============ */
.compare-modal {
  max-width: 640px;
}

.compare-vs-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: center;
  margin: 20px 36px;
  padding: 18px;
  background: rgba(15, 23, 42, 0.04);
  border: 1px solid var(--border-strong);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.compare-side { text-align: center; }
.compare-side-label {
  font-family: var(--display);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 6px;
}
.compare-side.is-self .compare-side-label { color: var(--teal); }
.compare-side.is-opp .compare-side-label { color: var(--magenta); }

.compare-side-xp {
  font-family: var(--display);
  font-size: 26px;
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1;
}
.compare-side-skills {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  margin-top: 4px;
}

.compare-vs-divider {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 900;
  color: var(--text-3);
  letter-spacing: -0.02em;
}

.compare-section { padding: 12px 36px 16px; }

.compare-section-title {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.compare-count {
  display: inline-block;
  padding: 2px 8px;
  background: var(--bg-3);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-2);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.compare-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 200px;
  overflow-y: auto;
}

.compare-empty {
  text-align: center;
  padding: 16px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.compare-skill-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  align-items: center;
  font-size: 12px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.compare-skill-row:hover {
  border-color: var(--teal);
  background: rgba(0, 168, 143, 0.04);
}

.compare-skill-name {
  font-family: var(--sans);
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.compare-skill-tier {
  padding: 2px 6px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  background: var(--bg-3);
  color: var(--text-2);
  letter-spacing: 0.05em;
}

.compare-skill-xp {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--teal);
  font-weight: 700;
}

/* Trigger compare: làm lb-row clickable */
.lb-row {
  cursor: pointer;
}
.lb-row.is-self {
  cursor: default;
}

/* Mobile compare modal */
@media (max-width: 640px) {
  .compare-vs-row { margin: 16px 20px; padding: 14px; gap: 10px; }
  .compare-side-xp { font-size: 22px; }
  .compare-section { padding: 8px 20px 14px; }
  .compare-list { max-height: 160px; }
  .achievements-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 8px; }
  .achievement-icon { font-size: 28px; }
  .ach-popup { padding: 28px 24px 22px; }
  .ach-popup-icon { font-size: 56px; }
  .ach-popup-name { font-size: 20px; }
}

/* Reduced motion: tắt mọi animation Sprint 3 */
@media (prefers-reduced-motion: reduce) {
  .daily-quest-glow,
  .streak-card.is-hot .streak-icon,
  .ach-popup,
  .ach-popup-burst,
  .ach-popup-icon { animation: none !important; }
}


/* ============================================================
   SPRINT 4 · COOLDOWN VISUAL FEEDBACK
   ============================================================ */

/* Khi đang trong unlock cooldown: làm dim các skill node chưa unlock */
body.is-unlock-cooldown .skill-node:not(.unlocked) {
  opacity: 0.55;
  cursor: not-allowed;
}

body.is-unlock-cooldown .skill-node:not(.unlocked):hover {
  transform: none;
  border-color: var(--border);
  box-shadow: none;
}

/* Daily quest card cũng phải show cooldown */
body.is-unlock-cooldown .daily-quest {
  opacity: 0.6;
  cursor: not-allowed;
}

body.is-unlock-cooldown .daily-quest:hover {
  transform: none;
  box-shadow: 0 0 24px rgba(217, 119, 6, 0.12);
}


/* ============================================================
   SPRINT 4 · PERFORMANCE OPTIMIZATIONS
   ============================================================ */

/* content-visibility: skip rendering các section dài ngoài viewport.
   Browser tự decide khi nào render — cho phép skill grid (71 nodes) không
   block initial paint nếu user đang ở Home tab. */
.panel:not(.active) {
  content-visibility: auto;
  contain-intrinsic-size: 600px;
}

/* CLS prevention: explicit dimensions cho các section dynamic */
.achievements-grid { min-height: 160px; }
.activity-list { min-height: 120px; }
.leaderboard { min-height: 200px; }

/* Reduce CSS specificity battles: simpler animations on low-end */
@media (max-width: 640px) {
  /* Mobile: tắt một số animation tốn GPU */
  body::before { animation: none; }  /* tắt grid shift trên mobile */
  .daily-quest-glow { display: none; }
}

/* will-change hint cho các element thật sự sẽ animate (browser tối ưu compositor) */
.tab,
.skill-node,
.resource-card,
.lb-row {
  will-change: auto;  /* default; chỉ promote khi cần */
}

.tab.active,
.skill-node:hover,
.resource-card:hover {
  will-change: transform;
}


/* ============================================================
   ADMIN PANEL
   ============================================================ */

/* Trigger button trong header (ẩn mặc định, JS hiện cho admin) */
.btn-admin {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(220, 38, 38, 0.08);
  border: 1px solid rgba(220, 38, 38, 0.35);
  color: var(--red);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  padding: 0;
  border-radius: 6px;
}

.btn-admin[hidden] { display: none; }

.btn-admin:hover {
  background: var(--red);
  color: #ffffff;
  border-color: var(--red);
  box-shadow: 0 0 16px var(--red-glow);
  transform: rotate(45deg);
}

.btn-admin:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* Admin modal styling: dark red theme để cảnh báo */
.admin-modal {
  max-width: 480px;
  border-color: var(--red) !important;
  box-shadow: 0 0 80px rgba(220, 38, 38, 0.3), inset 0 0 80px rgba(220, 38, 38, 0.02) !important;
}

.admin-modal::before {
  background: linear-gradient(90deg, var(--red), var(--magenta), var(--red)) !important;
  box-shadow: 0 0 20px var(--red) !important;
}

.admin-eyebrow {
  color: var(--red) !important;
  text-shadow: 0 0 12px var(--red-glow);
}

/* Tab switcher 2 chế độ */
.admin-tabs {
  display: flex;
  gap: 4px;
  margin: 0 36px 16px;
  padding: 4px;
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border);
}

.admin-tab {
  flex: 1;
  padding: 9px 12px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 11px;
  color: var(--text-3);
  background: transparent;
  border: none;
  cursor: pointer;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.2s;
}

.admin-tab:hover { color: var(--text); }

.admin-tab.active {
  color: #ffffff;
  background: linear-gradient(135deg, var(--red), var(--magenta));
  box-shadow: 0 0 12px var(--red-glow);
}

.admin-tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* Panel content */
.admin-panel {
  padding: 4px 36px 24px;
}

.admin-panel[hidden] { display: none; }

.admin-text {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.55;
  margin-bottom: 16px;
}

.admin-text strong { color: var(--text); }

.admin-text code {
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 6px;
  background: var(--bg-3);
  color: var(--red);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.admin-warning {
  padding: 12px 14px;
  background: rgba(220, 38, 38, 0.06);
  border: 1px solid rgba(220, 38, 38, 0.3);
  border-left: 3px solid var(--red);
  color: var(--text);
}

.admin-warning strong { color: var(--red); }

.admin-label {
  display: block;
  font-family: var(--display);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-2);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 6px;
  margin-top: 16px;
}

.admin-label code {
  font-family: var(--mono);
  font-size: 11px;
  padding: 1px 5px;
  background: var(--bg-3);
  color: var(--red);
  text-transform: none;
  letter-spacing: 0;
}

.admin-input {
  width: 100%;
  padding: 11px 14px;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--text);
  background: var(--bg-1);
  border: 1px solid var(--border-strong);
  border-radius: 0;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.admin-input:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 12px rgba(220, 38, 38, 0.15);
}

.admin-btn-danger {
  width: 100%;
  margin-top: 20px;
  padding: 13px;
  background: linear-gradient(135deg, var(--red), #b91c1c);
  color: #ffffff;
  font-family: var(--display);
  font-weight: 800;
  font-size: 12px;
  border: none;
  cursor: pointer;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  box-shadow: 0 0 20px var(--red-glow);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}

.admin-btn-danger:hover:not(:disabled) {
  transform: scale(1.02);
  box-shadow: 0 0 32px var(--red-glow);
}

.admin-btn-danger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.admin-btn-danger:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: var(--text-4);
  box-shadow: none;
}

/* Result message dưới form */
.admin-result {
  margin: 8px 36px 16px;
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 12px;
  border: 1px solid var(--border);
  line-height: 1.5;
}

.admin-result[hidden] { display: none; }

.admin-result.is-success {
  color: var(--teal);
  border-color: var(--teal);
  background: rgba(0, 168, 143, 0.06);
}

.admin-result.is-error {
  color: var(--red);
  border-color: var(--red);
  background: rgba(220, 38, 38, 0.06);
}

.admin-footer {
  color: var(--red);
  opacity: 0.7;
}

@media (max-width: 640px) {
  .admin-tabs { margin: 0 20px 12px; }
  .admin-panel { padding: 4px 20px 20px; }
  .admin-result { margin: 8px 20px 12px; }
}

/* ============================================================
   🆕 Admin Checkbox Row - Tùy chọn xóa luôn accounts
   ============================================================ */
.admin-checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 16px 0 12px;
  padding: 14px 16px;
  background: rgba(220, 38, 38, 0.05);
  border: 1.5px solid rgba(220, 38, 38, 0.25);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.admin-checkbox-row:hover {
  background: rgba(220, 38, 38, 0.08);
  border-color: rgba(220, 38, 38, 0.4);
}

.admin-checkbox {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--red, #dc2626);
  cursor: pointer;
  flex-shrink: 0;
}

.admin-checkbox-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.admin-checkbox-content strong {
  color: var(--red, #dc2626);
  font-size: 13px;
  font-weight: 700;
}

.admin-checkbox-content small {
  color: var(--text-secondary, #8a96b8);
  font-size: 11px;
  line-height: 1.5;
}

/* ============================================================
   🎮 PUBG-STYLE FONT TUNING
   Black Ops One/Oswald đậm hơn font cũ → tinh chỉnh letter-spacing
   và line-height để cân bằng, vẫn dễ đọc
   ============================================================ */

/* Black Ops One cần thoáng hơn vì chữ vốn đã rất "đặc" */
h1, h2, h3,
.hero-title, .login-title,
.player-name, .stat-num,
.section-title, .reward-rank,
.rank-display {
  letter-spacing: 1.5px;
}

/* Body text Oswald đọc tốt hơn khi tracking nới một chút */
body, p, .hero-subtitle,
.daily-quest-name, .streak-label,
.reward-name, .reward-condition {
  letter-spacing: 0.3px;
}

/* Share Tech Mono đã có dáng terminal gaming sẵn — chỉ cần spacing */
.player-email, .stat-meta, .stat-label,
.section-eyebrow, .hero-eyebrow,
.daily-quest-eyebrow, .spec-tag,
code, .reward-badge {
  letter-spacing: 1px;
}

/* Black Ops One khi in nhỏ hay bị "gãy" → set min-size + weight */
.tab, .nav-link, button {
  font-weight: 500;
}

/* Đảm bảo dấu tiếng Việt không bị vỡ với Black Ops One
   (Black Ops One không support tốt dấu, body dùng Oswald sẽ ổn) */
.hero-subtitle, .section-subtitle,
.daily-quest-name, .reward-condition,
.rewards-footnote, .admin-text,
.admin-checkbox-content small, p {
  font-family: var(--sans);
}

/* ============================================================
   🎁 REWARDS SECTION v2 - Inventory Item Card Style
   Inspired by: Diablo / PUBG / CS:GO item drops
   ============================================================ */

.rewards-section {
  margin: 32px 0 24px;
  position: relative;
}

/* Header */
.rewards-header {
  text-align: center;
  margin-bottom: 24px;
  padding: 0 16px;
}

.rewards-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 3px;
  color: #ffd700;
  text-transform: uppercase;
  padding: 6px 14px;
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.35);
  border-radius: 20px;
  margin-bottom: 14px;
}

.rewards-eyebrow-icon {
  font-size: 14px;
}

.rewards-title {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 400;
  letter-spacing: 3px;
  color: #e8eaf6;
  margin: 8px 0 10px;
  text-transform: uppercase;
}

.rewards-title-accent {
  background: linear-gradient(135deg, #ffd700 0%, #ff9500 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.rewards-subtitle {
  font-family: var(--sans);
  font-size: 13px;
  color: #8a96b8;
  letter-spacing: 0.5px;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Grid */
.rewards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 0;
}

/* Card */
.reward-card {
  position: relative;
  background: linear-gradient(180deg, #141a2e 0%, #0a0e1c 100%);
  border-radius: 12px;
  padding: 0;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.reward-card:hover {
  transform: translateY(-6px);
}

/* Tier-specific top border accent (Diablo-style) */
.reward-gold {
  border: 2px solid #ffd700;
  box-shadow: 0 0 0 1px rgba(255, 215, 0, 0.15), 0 4px 20px rgba(0,0,0,0.3);
}
.reward-gold:hover {
  box-shadow: 0 0 0 1px rgba(255, 215, 0, 0.4), 0 12px 40px rgba(255, 215, 0, 0.25);
}

.reward-silver {
  border: 2px solid #00d9c0;
  box-shadow: 0 0 0 1px rgba(0, 217, 192, 0.15), 0 4px 20px rgba(0,0,0,0.3);
}
.reward-silver:hover {
  box-shadow: 0 0 0 1px rgba(0, 217, 192, 0.4), 0 12px 40px rgba(0, 217, 192, 0.22);
}

.reward-bronze {
  border: 2px solid #ff1f8f;
  box-shadow: 0 0 0 1px rgba(255, 31, 143, 0.15), 0 4px 20px rgba(0,0,0,0.3);
}
.reward-bronze:hover {
  box-shadow: 0 0 0 1px rgba(255, 31, 143, 0.4), 0 12px 40px rgba(255, 31, 143, 0.22);
}

/* Ribbon (top-left tier label) */
.reward-ribbon {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  padding: 10px 14px 12px;
  background: linear-gradient(135deg, currentColor 0%, transparent 100%);
  border-bottom-right-radius: 12px;
}

.reward-gold .reward-ribbon { color: rgba(255, 215, 0, 0.95); }
.reward-silver .reward-ribbon { color: rgba(0, 217, 192, 0.95); }
.reward-bronze .reward-ribbon { color: rgba(255, 31, 143, 0.95); }

.reward-ribbon-rank {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  color: #0a0e1c;
  letter-spacing: 1px;
}

.reward-ribbon-tier {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 2px;
  color: #0a0e1c;
  margin-top: 2px;
}

/* Image frame (top section with SVG) */
.reward-image-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 240 / 220;
  overflow: hidden;
}

.reward-image-frame svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Info section (bottom) */
.reward-info {
  padding: 18px 16px 18px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.015);
}

.reward-name {
  font-family: var(--display);
  font-size: 16px;
  font-weight: 400;
  color: #e8eaf6;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
  line-height: 1.3;
}

.reward-specs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.spec-tag {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #a8b2d1;
}

.spec-tag-gold {
  background: rgba(255, 215, 0, 0.08);
  border-color: rgba(255, 215, 0, 0.3);
  color: #ffd700;
}
.spec-tag-silver {
  background: rgba(0, 217, 192, 0.08);
  border-color: rgba(0, 217, 192, 0.3);
  color: #00d9c0;
}
.spec-tag-bronze {
  background: rgba(255, 31, 143, 0.08);
  border-color: rgba(255, 31, 143, 0.3);
  color: #ff5fb5;
}

.reward-condition {
  font-family: var(--sans);
  font-size: 11px;
  font-style: italic;
  color: #6a7494;
  padding-top: 12px;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  letter-spacing: 0.3px;
}

/* Footnote */
.rewards-footnote {
  margin-top: 24px;
  padding: 14px 20px;
  background: rgba(255, 215, 0, 0.03);
  border: 1px dashed rgba(255, 215, 0, 0.2);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: #8a96b8;
  text-align: center;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.dot-anim {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ffd700;
  animation: pulseDot 1.5s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

/* Responsive */
@media (max-width: 900px) {
  .rewards-grid { gap: 14px; }
  .rewards-title { font-size: 26px; }
  .reward-name { font-size: 14px; }
}

@media (max-width: 720px) {
  .rewards-grid { grid-template-columns: 1fr; gap: 16px; }
  .rewards-header { margin-bottom: 18px; }
  .rewards-title { font-size: 24px; letter-spacing: 2px; }
  .rewards-subtitle { font-size: 12px; }
  .reward-ribbon-rank { font-size: 20px; }
  .reward-image-frame { aspect-ratio: 320 / 220; }
  .rewards-footnote { font-size: 10px; padding: 12px 16px; }
}