/* ============================================================
   AI LEARNING PLATFORM — PREMIUM REDESIGN
   Aesthetic: Luxury dark SaaS — Linear × Vercel × Stripe
   Fonts: Clash Display (headings) + Cabinet Grotesk (body)
   ============================================================ */

@import url('https://api.fontshare.com/v2/css?f[]=clash-display@400,500,600,700&f[]=cabinet-grotesk@400,500,700,800&display=swap');

:root {
  --bg-void:       #07080c;
  --bg-base:       #0c0d14;
  --bg-surface:    #111219;
  --bg-elevated:   #161820;
  --bg-overlay:    #1c1e28;

  --border-subtle: rgba(255,255,255,0.04);
  --border-dim:    rgba(255,255,255,0.07);
  --border-base:   rgba(255,255,255,0.10);
  --border-strong: rgba(255,255,255,0.16);

  --text-primary:   #eeeef2;
  --text-secondary: #9596a8;
  --text-tertiary:  #5a5b6a;
  --text-muted:     #3d3e4d;

  --accent:         #5b5eff;
  --accent-mid:     #7b7eff;
  --accent-bright:  #9d9fff;
  --accent-subtle:  rgba(91,94,255,0.12);
  --accent-glow:    rgba(91,94,255,0.3);

  --jade:           #00c9a0;
  --jade-subtle:    rgba(0,201,160,0.12);
  --jade-glow:      rgba(0,201,160,0.25);

  --amber:          #f5a623;
  --amber-subtle:   rgba(245,166,35,0.12);

  --crimson:        #ff4f6d;
  --crimson-subtle: rgba(255,79,109,0.12);

  --lv1: #5b5eff;
  --lv2: #00c9a0;
  --lv3: #f5a623;
  --lv4: #ff4f6d;
  --lv5: #b278ff;

  --sidebar-w: 256px;
  --topbar-h:  60px;

  --r-xs:  4px;
  --r-sm:  8px;
  --r-md:  12px;
  --r-lg:  16px;
  --r-xl:  20px;
  --r-2xl: 28px;
  --r-full:9999px;

  --shadow-sm: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.5);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.6);
  --shadow-xl: 0 32px 80px rgba(0,0,0,0.7);

  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 0.12s;
  --t-base: 0.2s;
  --t-slow: 0.35s;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: 'Cabinet Grotesk', system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-base); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

h1, h2, h3, h4, h5 {
  font-family: 'Clash Display', system-ui, sans-serif;
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}
h1 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 700; }
h2 { font-size: clamp(1.25rem, 2.5vw, 1.65rem); }
h3 { font-size: 1.1rem; }
h4 { font-size: 0.92rem; font-weight: 600; }
p  { color: var(--text-secondary); line-height: 1.7; }
a  { color: var(--accent-bright); text-decoration: none; transition: color var(--t-fast) var(--ease); }
a:hover { color: var(--text-primary); }
code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-overlay);
  color: var(--accent-bright);
  padding: 2px 7px;
  border-radius: var(--r-xs);
  font-size: 0.83em;
  border: 1px solid var(--border-dim);
}

.hidden { display: none !important; }

/* ── ANIMATIONS ── */
@keyframes fadeUp   { from { opacity:0; transform:translateY(16px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn   { from { opacity:0; } to { opacity:1; } }
@keyframes scaleIn  { from { opacity:0; transform:scale(0.94); } to { opacity:1; transform:scale(1); } }
@keyframes spin     { to { transform:rotate(360deg); } }
@keyframes shimmerSlide { 0% { transform:translateX(-100%); } 100% { transform:translateX(100%); } }
@keyframes pulseGlow {
  0%,100% { box-shadow: 0 0 0 0 rgba(91,94,255,0.3); }
  50%     { box-shadow: 0 0 16px 4px rgba(91,94,255,0.3); }
}
@keyframes toastIn  { from { transform:translateX(110%) scale(0.92); opacity:0; } to { transform:translateX(0) scale(1); opacity:1; } }
@keyframes toastOut { from { transform:translateX(0); opacity:1; } to { transform:translateX(110%); opacity:0; } }
@keyframes xpFloat  { 0% { transform:translateY(0) scale(1); opacity:1; } 100% { transform:translateY(-80px) scale(1.2); opacity:0; } }
@keyframes floatUp  { 0%,100% { transform:translateY(0); } 50% { transform:translateY(-10px); } }

.anim-in   { animation: fadeUp var(--t-slow) var(--ease) both; }
.anim-in-1 { animation-delay:.04s; }
.anim-in-2 { animation-delay:.08s; }
.anim-in-3 { animation-delay:.12s; }
.anim-in-4 { animation-delay:.16s; }
.anim-in-5 { animation-delay:.20s; }
.anim-in-6 { animation-delay:.24s; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 7px; padding: 9px 18px;
  border-radius: var(--r-md);
  font-family: 'Cabinet Grotesk', sans-serif;
  font-size: 0.875rem; font-weight: 700;
  cursor: pointer; border: none; outline: none;
  white-space: nowrap;
  transition: all var(--t-base) var(--ease);
  position: relative; overflow: hidden;
  text-decoration: none; letter-spacing: -0.01em;
}
.btn::after { content:''; position:absolute; inset:0; opacity:0; background:rgba(255,255,255,0.07); transition:opacity var(--t-fast) var(--ease); }
.btn:hover::after { opacity:1; }
.btn:active { transform:scale(0.97); }

.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.12);
}
.btn-primary:hover { background: var(--accent-mid); box-shadow: 0 4px 20px var(--accent-glow); transform:translateY(-1px); color:#fff; }

.btn-secondary {
  background: var(--bg-elevated); color: var(--text-secondary);
  border: 1px solid var(--border-base);
}
.btn-secondary:hover { background:var(--bg-overlay); border-color:var(--border-strong); color:var(--text-primary); }

.btn-success {
  background: var(--jade); color: #001a14; font-weight:800;
  box-shadow: 0 2px 14px var(--jade-glow);
}
.btn-success:hover { filter:brightness(1.1); box-shadow:0 4px 24px var(--jade-glow); transform:translateY(-1px); color:#001a14; }

.btn-ghost { background:transparent; color:var(--text-secondary); border:1px solid transparent; }
.btn-ghost:hover { background:var(--bg-elevated); border-color:var(--border-base); color:var(--text-primary); }

.btn-danger { background:var(--crimson-subtle); color:var(--crimson); border:1px solid rgba(255,79,109,0.2); }
.btn-danger:hover { background:var(--crimson); color:#fff; border-color:transparent; }

.btn-sm  { padding:5px 12px; font-size:0.8rem; border-radius:var(--r-sm); }
.btn-lg  { padding:12px 28px; font-size:1rem; border-radius:var(--r-lg); }
.btn-xl  { padding:14px 34px; font-size:1.05rem; border-radius:var(--r-lg); }
.btn-icon { padding:7px; border-radius:var(--r-sm); aspect-ratio:1; }
.btn:disabled { opacity:0.35; cursor:not-allowed; transform:none !important; pointer-events:none; }

/* ── CARDS ── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  padding: 24px;
  transition: border-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}
.card-hover:hover { border-color:var(--border-base); box-shadow:var(--shadow-md); }

/* Shimmer on hover */
.card-shimmer { position:relative; overflow:hidden; }
.card-shimmer::before {
  content:''; position:absolute; inset:0;
  background:linear-gradient(105deg, transparent 30%, rgba(255,255,255,0.025) 50%, transparent 70%);
  transform:translateX(-100%);
  transition:transform 0.65s var(--ease);
}
.card-shimmer:hover::before { transform:translateX(100%); }

/* ── BADGES ── */
.badge {
  display:inline-flex; align-items:center; gap:4px;
  padding:3px 9px; border-radius:var(--r-full);
  font-size:0.7rem; font-weight:700;
  font-family:'Clash Display', sans-serif;
  letter-spacing:0.01em; white-space:nowrap;
}
.badge-accent  { background:var(--accent-subtle);  color:var(--accent-bright); border:1px solid rgba(91,94,255,0.2); }
.badge-jade    { background:var(--jade-subtle);     color:var(--jade);          border:1px solid rgba(0,201,160,0.2); }
.badge-amber   { background:var(--amber-subtle);    color:var(--amber);         border:1px solid rgba(245,166,35,0.2); }
.badge-crimson { background:var(--crimson-subtle);  color:var(--crimson);       border:1px solid rgba(255,79,109,0.2); }
.badge-neutral { background:var(--bg-overlay);      color:var(--text-secondary); border:1px solid var(--border-base); }
.badge-violet  { background:rgba(178,120,255,0.12); color:#b278ff; border:1px solid rgba(178,120,255,0.2); }

/* ── PROGRESS ── */
.progress-track {
  background: var(--bg-overlay);
  border-radius: var(--r-full);
  overflow: hidden;
  height: 6px;
}
.progress-fill {
  height: 100%; border-radius: var(--r-full);
  background: linear-gradient(90deg, var(--accent), var(--accent-mid));
  transition: width 0.7s cubic-bezier(0.4,0,0.2,1);
  position: relative;
}
.progress-fill::after {
  content:''; position:absolute; right:0; top:0; bottom:0;
  width:14px; background:rgba(255,255,255,0.35);
  filter:blur(3px); border-radius:var(--r-full);
}
.progress-track-lg  { height:8px; }
.progress-fill-jade   { background:linear-gradient(90deg,var(--jade),#00f0c2); }
.progress-fill-amber  { background:linear-gradient(90deg,var(--amber),#ffc94d); }
.progress-fill-violet { background:linear-gradient(90deg,#b278ff,#d0a8ff); }
.progress-fill-crimson{ background:linear-gradient(90deg,var(--crimson),#ff8fa3); }

/* ── FORMS ── */
.form-group { display:flex; flex-direction:column; gap:6px; }
.form-label {
  font-size:0.72rem; font-weight:700;
  color:var(--text-tertiary);
  font-family:'Clash Display',sans-serif;
  text-transform:uppercase; letter-spacing:0.07em;
}
.form-control {
  background:var(--bg-surface); border:1px solid var(--border-base);
  border-radius:var(--r-md); color:var(--text-primary);
  font-family:'Cabinet Grotesk',sans-serif; font-size:0.92rem;
  padding:10px 14px;
  transition:border-color var(--t-fast), box-shadow var(--t-fast);
  width:100%; outline:none;
}
.form-control:focus { border-color:var(--accent); box-shadow:0 0 0 3px rgba(91,94,255,0.18); background:var(--bg-elevated); }
.form-control::placeholder { color:var(--text-muted); }
textarea.form-control { resize:vertical; min-height:100px; }
select.form-control { cursor:pointer; }

/* ── TOASTS ── */
#toast-container { position:fixed; bottom:24px; right:24px; z-index:9999; display:flex; flex-direction:column; gap:8px; pointer-events:none; }
.toast {
  display:flex; align-items:center; gap:10px;
  padding:12px 18px;
  background:rgba(22,24,32,0.95);
  border:1px solid var(--border-base);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);
  min-width:250px; max-width:340px;
  font-size:0.86rem; font-weight:600;
  animation:toastIn 0.3s var(--ease-spring) both;
  pointer-events:all;
  backdrop-filter:blur(16px);
}
.toast-icon { width:26px; height:26px; border-radius:var(--r-sm); display:flex; align-items:center; justify-content:center; font-size:0.85rem; flex-shrink:0; }
.toast.success .toast-icon { background:var(--jade-subtle); }
.toast.error   .toast-icon { background:var(--crimson-subtle); }
.toast.info    .toast-icon { background:var(--accent-subtle); }
.toast.xp      .toast-icon { background:var(--amber-subtle); }

.xp-popup {
  position:fixed; pointer-events:none;
  font-family:'Clash Display',sans-serif; font-weight:700; font-size:1.05rem;
  color:var(--amber); text-shadow:0 0 20px rgba(245,166,35,0.6);
  z-index:9998; animation:xpFloat 1.4s var(--ease) forwards;
}

/* ── MODAL ── */
.modal-overlay {
  position:fixed; inset:0;
  background:rgba(7,8,12,0.82);
  backdrop-filter:blur(16px) saturate(1.2);
  z-index:1000; display:flex; align-items:center; justify-content:center;
  padding:20px; animation:fadeIn 0.2s var(--ease);
}
.modal {
  background:var(--bg-surface); border:1px solid var(--border-base);
  border-radius:var(--r-2xl); padding:32px;
  width:100%; max-width:540px; max-height:90vh; overflow-y:auto;
  box-shadow:var(--shadow-xl); animation:scaleIn 0.25s var(--ease-spring);
}
.modal-header { display:flex; align-items:flex-start; justify-content:space-between; margin-bottom:24px; gap:16px; }
.modal-close {
  background:var(--bg-overlay); border:1px solid var(--border-base);
  color:var(--text-tertiary); cursor:pointer;
  padding:5px 8px; border-radius:var(--r-sm); font-size:0.88rem;
  transition:all var(--t-fast) var(--ease); flex-shrink:0;
}
.modal-close:hover { background:var(--crimson-subtle); color:var(--crimson); }

/* ════════════════════════════════════════
   LOGIN — Split screen
   ════════════════════════════════════════ */
#login-page {
  min-height:100vh;
  display:grid;
  grid-template-columns:1fr 1fr;
  overflow:hidden;
}
.login-panel-left {
  background:var(--bg-void);
  position:relative; overflow:hidden;
  display:flex; flex-direction:column;
  justify-content:space-between; padding:48px;
}
.login-panel-left::before {
  content:''; position:absolute; inset:0;
  background:
    radial-gradient(ellipse 80% 70% at 25% 20%, rgba(91,94,255,0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 85%, rgba(0,201,160,0.10) 0%, transparent 55%);
  pointer-events:none;
}
.login-grid-bg {
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size:52px 52px;
  pointer-events:none;
}
.login-left-logo { display:flex; align-items:center; gap:10px; position:relative; z-index:1; }
.login-logo-mark {
  width:38px; height:38px; background:var(--accent); border-radius:var(--r-md);
  display:flex; align-items:center; justify-content:center; font-size:1.2rem;
  box-shadow:0 4px 20px var(--accent-glow);
}
.login-logo-name { font-family:'Clash Display',sans-serif; font-weight:700; font-size:1.05rem; }
.login-logo-name span { color:var(--accent-bright); }
.login-hero { position:relative; z-index:1; }
.login-hero h1 { font-size:clamp(2rem,3.5vw,2.8rem); line-height:1.1; margin-bottom:16px; }
.login-hero h1 em {
  font-style:normal;
  background:linear-gradient(135deg, var(--accent-bright), var(--jade));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.login-hero p { font-size:0.95rem; color:var(--text-secondary); max-width:360px; }
.login-bottom-stats { display:flex; gap:28px; position:relative; z-index:1; }
.login-bottom-stat strong { display:block; font-family:'Clash Display',sans-serif; font-size:1.5rem; font-weight:700; }
.login-bottom-stat span  { font-size:0.72rem; color:var(--text-tertiary); text-transform:uppercase; letter-spacing:0.05em; }

/* Floating cards on left panel */
.login-floating-cards {
  position:absolute; right:-12px; top:50%; transform:translateY(-50%);
  display:flex; flex-direction:column; gap:10px; z-index:2;
}
.lfc {
  background:rgba(22,24,32,0.92); border:1px solid var(--border-base);
  border-radius:var(--r-lg); padding:14px 18px; width:195px;
  box-shadow:var(--shadow-lg); backdrop-filter:blur(10px);
}
.lfc:nth-child(1) { animation:floatUp 5s var(--ease) infinite; }
.lfc:nth-child(2) { animation:floatUp 5s var(--ease) infinite; animation-delay:-1.7s; transform:translateX(16px); }
.lfc:nth-child(3) { animation:floatUp 5s var(--ease) infinite; animation-delay:-3.3s; }
.lfc-icon { font-size:1.2rem; margin-bottom:6px; }
.lfc-title { font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.8rem; margin-bottom:3px; }
.lfc-sub   { font-size:0.7rem; color:var(--text-muted); }
.lfc-bar   { height:3px; background:var(--bg-overlay); border-radius:var(--r-full); margin-top:8px; }
.lfc-bar-fill { height:100%; border-radius:var(--r-full); }

/* Right panel — form */
.login-panel-right {
  background:var(--bg-base);
  display:flex; align-items:center; justify-content:center;
  padding:48px 40px; position:relative;
}
.login-form-box { width:100%; max-width:380px; animation:fadeUp 0.5s var(--ease) both; }
.login-form-eyebrow {
  display:inline-flex; align-items:center; gap:6px;
  padding:4px 12px; border-radius:var(--r-full);
  background:var(--accent-subtle); border:1px solid rgba(91,94,255,0.2);
  font-size:0.72rem; font-weight:700; color:var(--accent-bright);
  font-family:'Clash Display',sans-serif; letter-spacing:0.04em;
  text-transform:uppercase; margin-bottom:20px;
}
.login-form-title { font-size:1.9rem; margin-bottom:7px; }
.login-form-sub   { color:var(--text-secondary); font-size:0.88rem; margin-bottom:28px; }
.login-form { display:flex; flex-direction:column; gap:16px; }
.login-error {
  background:var(--crimson-subtle); border:1px solid rgba(255,79,109,0.25);
  color:var(--crimson); padding:10px 14px; border-radius:var(--r-md);
  font-size:0.84rem; font-weight:600; display:none;
  animation:fadeUp 0.2s var(--ease);
}
.login-hint {
  margin-top:18px; padding:14px 16px; background:var(--bg-surface);
  border-radius:var(--r-lg); font-size:0.78rem; color:var(--text-tertiary);
  border:1px solid var(--border-subtle); line-height:1.9;
}
.login-hint strong { color:var(--text-secondary); }

@media (max-width:768px) {
  #login-page { grid-template-columns:1fr; }
  .login-panel-left { display:none; }
  .login-panel-right { padding:32px 24px; }
}

/* ════════════════════════════════════════
   APP SHELL
   ════════════════════════════════════════ */
#app { display:flex; min-height:100vh; }

/* ── SIDEBAR ── */
.sidebar {
  width:var(--sidebar-w);
  background:var(--bg-void);
  border-right:1px solid var(--border-subtle);
  display:flex; flex-direction:column;
  position:fixed; inset-block:0; left:0;
  z-index:100;
  transition:transform var(--t-slow) var(--ease);
}
.sidebar-logo-zone {
  padding:18px 16px 14px;
  border-bottom:1px solid var(--border-subtle);
}
.sidebar-logo {
  display:flex; align-items:center; gap:9px;
  text-decoration:none; margin-bottom:14px;
}
.sidebar-logo-mark {
  width:32px; height:32px; background:var(--accent); border-radius:var(--r-sm);
  display:flex; align-items:center; justify-content:center; font-size:1rem;
  box-shadow:0 2px 14px var(--accent-glow); flex-shrink:0;
  transition:box-shadow var(--t-base) var(--ease);
}
.sidebar-logo:hover .sidebar-logo-mark { box-shadow:0 4px 24px var(--accent-glow); }
.sidebar-logo-text { font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.95rem; letter-spacing:-0.02em; }
.sidebar-logo-text span { color:var(--accent-bright); }

.sidebar-xp-card {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-lg); padding:11px 12px;
}
.sidebar-xp-row { display:flex; align-items:center; justify-content:space-between; margin-bottom:7px; }
.sidebar-xp-lbl { font-size:0.62rem; color:var(--text-muted); font-weight:700; text-transform:uppercase; letter-spacing:0.09em; font-family:'Clash Display',sans-serif; }
.sidebar-xp-val { font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.85rem; color:var(--amber); }
.sidebar-level-text { font-size:0.68rem; color:var(--text-muted); text-align:right; margin-top:4px; }

.sidebar-nav { flex:1; overflow-y:auto; padding:10px 10px; display:flex; flex-direction:column; gap:1px; }
.sidebar-section-lbl {
  padding:12px 8px 4px;
  font-size:0.62rem; font-weight:700; text-transform:uppercase;
  letter-spacing:0.12em; color:var(--text-muted);
  font-family:'Clash Display',sans-serif;
}
.nav-item {
  display:flex; align-items:center; gap:9px;
  padding:7px 9px; border-radius:var(--r-md);
  color:var(--text-tertiary); font-size:0.86rem; font-weight:600;
  cursor:pointer;
  transition:all var(--t-fast) var(--ease);
  text-decoration:none; border:1px solid transparent;
}
.nav-item:hover { background:var(--bg-elevated); color:var(--text-secondary); border-color:var(--border-subtle); }
.nav-item.active { background:var(--accent-subtle); color:var(--accent-bright); border-color:rgba(91,94,255,0.2); }
.nav-icon {
  width:26px; height:26px; border-radius:var(--r-sm);
  display:flex; align-items:center; justify-content:center; font-size:0.88rem;
  flex-shrink:0; background:var(--bg-overlay); border:1px solid var(--border-subtle);
  transition:all var(--t-fast) var(--ease);
}
.nav-item.active  .nav-icon { background:var(--accent-subtle); border-color:rgba(91,94,255,0.25); }
.nav-item:hover   .nav-icon { background:var(--bg-surface); }
.nav-item-label   { flex:1; }
.nav-item-badge   { font-size:0.62rem; font-weight:800; background:var(--accent); color:#fff; padding:1px 6px; border-radius:var(--r-full); font-family:'Clash Display',sans-serif; }
.nav-progress-dots { display:flex; gap:2px; }
.ndot { width:4px; height:4px; border-radius:50%; background:var(--bg-overlay); border:1px solid var(--border-base); }
.ndot.on { background:var(--accent-mid); border-color:transparent; }

.sidebar-footer { padding:10px; border-top:1px solid var(--border-subtle); }
.sidebar-user {
  display:flex; align-items:center; gap:9px;
  padding:8px 10px; border-radius:var(--r-lg);
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  transition:all var(--t-fast) var(--ease); cursor:default;
}
.sidebar-user:hover { background:var(--bg-elevated); border-color:var(--border-base); }
.sidebar-avatar {
  width:30px; height:30px; border-radius:var(--r-sm); background:var(--accent);
  display:flex; align-items:center; justify-content:center;
  font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.85rem;
  color:#fff; flex-shrink:0;
}
.sidebar-uname { font-weight:700; font-size:0.82rem; line-height:1.2; }
.sidebar-urole { font-size:0.68rem; color:var(--text-muted); }
.sidebar-logout {
  background:none; border:none; color:var(--text-muted);
  cursor:pointer; font-size:0.9rem; padding:4px; border-radius:var(--r-sm);
  transition:color var(--t-fast) var(--ease); margin-left:auto; flex-shrink:0;
  display:flex; align-items:center;
}
.sidebar-logout:hover { color:var(--crimson); }

/* ── TOPBAR ── */
.main-content { margin-left:var(--sidebar-w); display:flex; flex-direction:column; min-height:100vh; }
.topbar {
  height:var(--topbar-h);
  background:rgba(12,13,20,0.88);
  backdrop-filter:blur(20px) saturate(1.5);
  border-bottom:1px solid var(--border-subtle);
  padding:0 28px;
  display:flex; align-items:center; justify-content:space-between;
  position:sticky; top:0; z-index:50;
}
.topbar-left  { display:flex; align-items:center; gap:10px; }
.topbar-breadcrumb {
  display:flex; align-items:center; gap:7px;
  font-size:0.82rem; color:var(--text-tertiary);
}
.topbar-breadcrumb-sep { opacity:0.3; font-size:0.75rem; }
.topbar-breadcrumb .bc-active { color:var(--text-primary); font-weight:600; }
.topbar-right { display:flex; align-items:center; gap:8px; }
.streak-chip {
  display:flex; align-items:center; gap:5px;
  padding:5px 11px; background:var(--bg-surface); border:1px solid var(--border-base);
  border-radius:var(--r-full); font-size:0.76rem; font-weight:700;
  font-family:'Clash Display',sans-serif; color:var(--amber); letter-spacing:-0.01em;
}
.topbar-avatar {
  width:30px; height:30px; border-radius:var(--r-sm); background:var(--accent);
  display:flex; align-items:center; justify-content:center;
  font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.78rem;
  color:#fff; text-decoration:none;
  transition:box-shadow var(--t-fast) var(--ease);
}
.topbar-avatar:hover { box-shadow:0 0 0 2px var(--accent), 0 0 16px var(--accent-glow); }
.hamburger {
  display:none; background:none; border:1px solid var(--border-base);
  color:var(--text-secondary); font-size:1rem; cursor:pointer;
  padding:6px 8px; border-radius:var(--r-sm);
  transition:all var(--t-fast) var(--ease);
}
.hamburger:hover { background:var(--bg-surface); color:var(--text-primary); }

.page-body { padding:28px 32px; flex:1; }

/* ════════════════════════════════════════
   DASHBOARD
   ════════════════════════════════════════ */
.dash-hero { margin-bottom:24px; }
.dash-hero h1 { margin-bottom:5px; }
.dash-hero h1 .name-hi {
  background:linear-gradient(135deg,var(--accent-bright),var(--jade));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.dash-hero p { font-size:0.9rem; }

.stats-row {
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:12px; margin-bottom:24px;
}
.stat-tile {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-xl); padding:20px;
  transition:all var(--t-base) var(--ease);
  position:relative; overflow:hidden;
}
.stat-tile::before {
  content:''; position:absolute; top:0; left:0; right:0; height:2px;
  border-radius:var(--r-full); opacity:0;
  transition:opacity var(--t-base) var(--ease);
}
.stat-tile:hover { transform:translateY(-3px); border-color:var(--border-base); box-shadow:var(--shadow-md); }
.stat-tile:hover::before { opacity:1; }
.t-accent::before { background:var(--accent); }
.t-jade::before   { background:var(--jade); }
.t-amber::before  { background:var(--amber); }
.t-violet::before { background:#b278ff; }
.stat-icon-wrap {
  width:36px; height:36px; border-radius:var(--r-md);
  display:flex; align-items:center; justify-content:center;
  font-size:1.1rem; margin-bottom:14px;
}
.t-accent .stat-icon-wrap { background:var(--accent-subtle); }
.t-jade   .stat-icon-wrap { background:var(--jade-subtle); }
.t-amber  .stat-icon-wrap { background:var(--amber-subtle); }
.t-violet .stat-icon-wrap { background:rgba(178,120,255,0.12); }
.stat-val { font-family:'Clash Display',sans-serif; font-size:2rem; font-weight:700; line-height:1; margin-bottom:4px; letter-spacing:-0.04em; }
.stat-lbl { font-size:0.72rem; color:var(--text-muted); font-weight:600; text-transform:uppercase; letter-spacing:0.05em; }

.master-bar-card {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-xl); padding:20px 24px; margin-bottom:24px;
  display:flex; align-items:center; gap:20px;
}
.master-bar-left  { flex:1; min-width:0; }
.master-bar-lbl   { font-size:0.7rem; color:var(--text-muted); font-weight:700; text-transform:uppercase; letter-spacing:0.07em; margin-bottom:7px; font-family:'Clash Display',sans-serif; }
.master-bar-title { font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.95rem; margin-bottom:11px; }
.master-bar-right { text-align:right; flex-shrink:0; }
.master-pct {
  font-family:'Clash Display',sans-serif; font-size:2.1rem; font-weight:700;
  letter-spacing:-0.04em; line-height:1;
  background:linear-gradient(135deg,var(--accent-bright),var(--jade));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.master-pct-sub { font-size:0.72rem; color:var(--text-muted); margin-top:3px; }

.dash-grid { display:grid; grid-template-columns:1fr 320px; gap:18px; align-items:start; }
.dash-main { display:flex; flex-direction:column; gap:18px; }
.dash-side { display:flex; flex-direction:column; gap:14px; }

.section-hd { display:flex; align-items:center; justify-content:space-between; margin-bottom:12px; }
.section-hd-title {
  font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.92rem;
  display:flex; align-items:center; gap:7px;
}
.shd-dot { width:5px; height:5px; border-radius:50%; background:var(--accent); flex-shrink:0; }

/* ════════════════════════════════════════
   LEVEL CARDS
   ════════════════════════════════════════ */
.levels-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:12px; }
.level-card {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-xl); padding:22px; cursor:pointer;
  transition:all var(--t-base) var(--ease);
  position:relative; overflow:hidden;
  text-decoration:none; display:block; color:inherit;
}
.lc-glow {
  position:absolute; top:-50px; right:-50px;
  width:130px; height:130px; border-radius:50%;
  opacity:0.05; transition:opacity var(--t-base) var(--ease);
  pointer-events:none;
}
.level-card:hover .lc-glow { opacity:0.14; }
.level-card:hover { transform:translateY(-4px); border-color:var(--border-strong); box-shadow:var(--shadow-lg); }
[data-lc="1"]:hover { border-color:rgba(91,94,255,0.3);  }
[data-lc="2"]:hover { border-color:rgba(0,201,160,0.3);  }
[data-lc="3"]:hover { border-color:rgba(245,166,35,0.3); }
[data-lc="4"]:hover { border-color:rgba(255,79,109,0.3); }
[data-lc="5"]:hover { border-color:rgba(178,120,255,0.3);}
[data-lc="1"] .lc-glow { background:var(--lv1); }
[data-lc="2"] .lc-glow { background:var(--lv2); }
[data-lc="3"] .lc-glow { background:var(--lv3); }
[data-lc="4"] .lc-glow { background:var(--lv4); }
[data-lc="5"] .lc-glow { background:var(--lv5); }
.lc-top { display:flex; align-items:center; justify-content:space-between; margin-bottom:14px; }
.lc-num-badge {
  font-family:'Clash Display',sans-serif; font-size:0.66rem; font-weight:700;
  letter-spacing:0.06em; text-transform:uppercase; padding:3px 8px; border-radius:var(--r-full);
}
[data-lc="1"] .lc-num-badge { background:rgba(91,94,255,0.15);  color:var(--lv1); }
[data-lc="2"] .lc-num-badge { background:rgba(0,201,160,0.15);  color:var(--lv2); }
[data-lc="3"] .lc-num-badge { background:rgba(245,166,35,0.15); color:var(--lv3); }
[data-lc="4"] .lc-num-badge { background:rgba(255,79,109,0.15); color:var(--lv4); }
[data-lc="5"] .lc-num-badge { background:rgba(178,120,255,0.15);color:var(--lv5); }
.lc-status { font-size:0.9rem; }
.lc-icon  { font-size:2rem; margin-bottom:10px; }
.level-card h3 { font-size:0.98rem; margin-bottom:4px; }
.lc-desc  { font-size:0.78rem; color:var(--text-muted); margin-bottom:14px; line-height:1.5; }
.lc-meta  { display:flex; gap:12px; margin-bottom:13px; }
.lc-meta-item { font-size:0.72rem; color:var(--text-muted); }
.lc-meta-item strong { color:var(--text-secondary); font-weight:700; }
.lc-prog-lbl { display:flex; justify-content:space-between; font-size:0.68rem; color:var(--text-muted); margin-bottom:5px; font-family:'Clash Display',sans-serif; font-weight:600; }

/* ════════════════════════════════════════
   LESSON CARDS
   ════════════════════════════════════════ */
.lesson-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(248px,1fr)); gap:10px; }
.lesson-card {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-xl); padding:17px; cursor:pointer;
  transition:all var(--t-base) var(--ease);
  text-decoration:none; color:inherit; display:block;
  position:relative; overflow:hidden;
}
.lesson-card::after {
  content:'→'; position:absolute; right:16px; bottom:15px;
  font-size:0.88rem; color:var(--text-muted);
  transition:all var(--t-base) var(--ease-spring);
  opacity:0; transform:translateX(-6px);
}
.lesson-card:hover { transform:translateY(-2px); border-color:var(--border-base); box-shadow:var(--shadow-sm); color:inherit; }
.lesson-card:hover::after { opacity:1; transform:translateX(0); }
.lesson-card.completed { border-color:rgba(0,201,160,0.18); }
.lesson-card.completed:hover { border-color:rgba(0,201,160,0.35); }
.lcard-top { display:flex; align-items:flex-start; justify-content:space-between; margin-bottom:10px; }
.lcard-num {
  width:24px; height:24px; border-radius:var(--r-sm);
  background:var(--bg-overlay); border:1px solid var(--border-base);
  display:flex; align-items:center; justify-content:center;
  font-size:0.68rem; font-weight:800; color:var(--text-muted);
  font-family:'Clash Display',sans-serif; flex-shrink:0;
}
.lesson-card.completed .lcard-num { background:var(--jade-subtle); border-color:rgba(0,201,160,0.3); color:var(--jade); }
.lesson-card h4  { font-size:0.86rem; margin-bottom:4px; line-height:1.3; }
.lesson-card p   { font-size:0.75rem; color:var(--text-muted); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; margin-bottom:10px; }
.lcard-meta { display:flex; gap:5px; flex-wrap:wrap; }

/* ════════════════════════════════════════
   COURSE / LESSON PAGE
   ════════════════════════════════════════ */
.course-layout { display:grid; grid-template-columns:1fr 292px; gap:18px; align-items:start; }
.lesson-content-card {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-2xl); padding:40px 44px;
}
.lesson-hero-img {
  width:100%; max-height:300px; object-fit:cover;
  border-radius:var(--r-xl); margin-bottom:28px;
  border:1px solid var(--border-subtle);
}
.lesson-hero-placeholder {
  width:100%; height:190px; background:var(--bg-elevated);
  border-radius:var(--r-xl); display:flex; align-items:center; justify-content:center;
  font-size:3.5rem; margin-bottom:28px; border:1px solid var(--border-subtle);
}
.lesson-eyebrow { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:12px; }
.lesson-h1 { margin-bottom:28px; }
.lesson-body { color:var(--text-secondary); line-height:1.8; }
.lesson-body p { margin-bottom:16px; }
.lesson-body h3 { font-family:'Clash Display',sans-serif; font-size:1.02rem; color:var(--text-primary); margin-top:26px; margin-bottom:9px; }
.lesson-body ul, .lesson-body ol { padding-left:18px; margin-bottom:16px; }
.lesson-body li { margin-bottom:5px; }
.lesson-body strong { color:var(--text-primary); font-weight:700; }
.lesson-body blockquote {
  border-left:2px solid var(--accent); padding:12px 18px;
  background:var(--accent-subtle); border-radius:0 var(--r-md) var(--r-md) 0;
  margin:18px 0; font-size:0.9rem;
}

.exercise-card {
  background:var(--bg-elevated); border:1px solid var(--border-base);
  border-radius:var(--r-xl); padding:26px; margin-top:30px;
  position:relative; overflow:hidden;
}
.exercise-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:2px;
  background:linear-gradient(90deg,var(--amber),var(--accent));
}
.ex-top { display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.ex-icon-wrap { width:32px; height:32px; background:var(--amber-subtle); border-radius:var(--r-sm); display:flex; align-items:center; justify-content:center; font-size:0.95rem; }
.ex-title { font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.9rem; }
.ex-sub   { font-size:0.72rem; color:var(--text-muted); }
.ex-question { color:var(--text-primary); font-weight:600; margin-bottom:13px; font-size:0.93rem; }
.exercise-feedback {
  padding:11px 15px; border-radius:var(--r-md); font-size:0.85rem; font-weight:600;
  margin-top:11px; display:none; animation:fadeUp 0.2s var(--ease);
}
.exercise-feedback.correct   { background:var(--jade-subtle);    color:var(--jade);    border:1px solid rgba(0,201,160,0.25); }
.exercise-feedback.incorrect { background:var(--crimson-subtle); color:var(--crimson); border:1px solid rgba(255,79,109,0.25); }

.lesson-action-bar {
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
  margin-top:34px; padding-top:22px; border-top:1px solid var(--border-subtle);
}

.lesson-sidebar { display:flex; flex-direction:column; gap:12px; }
.ls-panel {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-xl); padding:16px;
}
.ls-panel-title {
  font-family:'Clash Display',sans-serif; font-size:0.65rem; font-weight:700;
  text-transform:uppercase; letter-spacing:0.1em; color:var(--text-muted); margin-bottom:11px;
}
.ls-nav-list { display:flex; flex-direction:column; gap:2px; }
.ls-nav-link {
  display:flex; align-items:center; gap:7px;
  padding:6px 8px; border-radius:var(--r-md);
  font-size:0.8rem; cursor:pointer;
  transition:all var(--t-fast) var(--ease);
  border:1px solid transparent; text-decoration:none;
  color:var(--text-tertiary); font-weight:500;
}
.ls-nav-link:hover { background:var(--bg-elevated); color:var(--text-secondary); border-color:var(--border-subtle); }
.ls-nav-link.active { background:var(--accent-subtle); color:var(--accent-bright); border-color:rgba(91,94,255,0.2); }
.ls-nav-link.done { color:var(--jade); }
.ls-nav-order { font-size:0.62rem; min-width:13px; color:var(--text-muted); font-family:'Clash Display',sans-serif; font-weight:700; }
.ls-nav-check { margin-left:auto; font-size:0.68rem; }

/* ════════════════════════════════════════
   PROFILE
   ════════════════════════════════════════ */
.profile-cover {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-2xl); padding:36px; margin-bottom:18px;
  position:relative; overflow:hidden;
}
.profile-cover-bg {
  position:absolute; inset:0;
  background:
    radial-gradient(ellipse 70% 80% at 10% 50%, rgba(91,94,255,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 90% 20%, rgba(0,201,160,0.06) 0%, transparent 50%);
  pointer-events:none;
}
.profile-avatar-lg {
  width:68px; height:68px; border-radius:var(--r-xl);
  background:var(--accent); display:flex; align-items:center; justify-content:center;
  font-family:'Clash Display',sans-serif; font-weight:700; font-size:1.6rem;
  color:#fff; margin-bottom:13px;
  box-shadow:0 4px 24px var(--accent-glow); position:relative; z-index:1;
}
.profile-name  { font-size:1.5rem; margin-bottom:3px; position:relative; z-index:1; }
.profile-sub   { font-size:0.83rem; color:var(--text-muted); position:relative; z-index:1; }
.profile-stats-row { display:flex; gap:26px; margin-top:18px; flex-wrap:wrap; position:relative; z-index:1; }
.profile-stat strong { display:block; font-family:'Clash Display',sans-serif; font-size:1.5rem; font-weight:700; }
.profile-stat span   { font-size:0.68rem; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.05em; font-family:'Clash Display',sans-serif; }

.badges-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(128px,1fr)); gap:9px; }
.badge-tile {
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-xl); padding:16px 12px; text-align:center;
  transition:all var(--t-base) var(--ease);
}
.badge-tile.earned { border-color:rgba(245,166,35,0.25); background:rgba(245,166,35,0.03); }
.badge-tile.earned:hover { transform:translateY(-3px); box-shadow:0 8px 24px rgba(245,166,35,0.1); border-color:rgba(245,166,35,0.4); }
.badge-tile.locked { opacity:0.32; filter:grayscale(0.8); }
.badge-tile-icon { font-size:1.9rem; margin-bottom:6px; }
.badge-tile-name { font-family:'Clash Display',sans-serif; font-weight:700; font-size:0.74rem; margin-bottom:3px; }
.badge-tile-desc { font-size:0.66rem; color:var(--text-muted); line-height:1.4; }
.badge-tile-status { font-size:0.62rem; margin-top:6px; font-weight:700; font-family:'Clash Display',sans-serif; }
.badge-tile.earned .badge-tile-status { color:var(--amber); }
.badge-tile.locked .badge-tile-status { color:var(--text-muted); }

/* Admin table */
.admin-tabs {
  display:flex; gap:4px; padding:4px;
  background:var(--bg-surface); border:1px solid var(--border-subtle);
  border-radius:var(--r-lg); width:fit-content; margin-bottom:18px;
}
.admin-tab {
  padding:6px 15px; border-radius:var(--r-md); font-size:0.81rem;
  font-weight:700; font-family:'Cabinet Grotesk',sans-serif;
  cursor:pointer; background:none; border:none; color:var(--text-tertiary);
  transition:all var(--t-fast) var(--ease);
}
.admin-tab:hover { color:var(--text-secondary); }
.admin-tab.active { background:var(--accent); color:#fff; box-shadow:0 2px 10px var(--accent-glow); }
.table-wrap { background:var(--bg-surface); border:1px solid var(--border-subtle); border-radius:var(--r-xl); overflow:auto; }
.lesson-table { width:100%; border-collapse:collapse; }
.lesson-table th {
  text-align:left; padding:11px 15px;
  font-size:0.66rem; font-weight:700; text-transform:uppercase; letter-spacing:0.09em;
  color:var(--text-muted); border-bottom:1px solid var(--border-subtle);
  font-family:'Clash Display',sans-serif;
}
.lesson-table td { padding:11px 15px; border-bottom:1px solid var(--border-subtle); font-size:0.85rem; vertical-align:middle; }
.lesson-table tr:last-child td { border-bottom:none; }
.lesson-table tr:hover td { background:var(--bg-elevated); }

/* Streak calendar */
.streak-calendar { display:grid; grid-template-columns:repeat(7,1fr); gap:3px; }
.cal-day { aspect-ratio:1; border-radius:3px; background:var(--bg-overlay); border:1px solid var(--border-subtle); transition:background var(--t-fast) var(--ease); }
.cal-day.active { background:var(--jade); border-color:transparent; }
.cal-day.today  { background:var(--accent); border-color:transparent; animation:pulseGlow 2s infinite; }

/* Empty / Loading */
.empty-state { text-align:center; padding:52px 24px; }
.empty-icon { width:60px; height:60px; background:var(--bg-elevated); border-radius:var(--r-2xl); display:flex; align-items:center; justify-content:center; font-size:1.6rem; margin:0 auto 14px; border:1px solid var(--border-base); }
.empty-state h3 { margin-bottom:6px; }
.empty-state p  { font-size:0.85rem; max-width:260px; margin:0 auto 18px; }
.loading { display:flex; align-items:center; justify-content:center; padding:48px; gap:9px; color:var(--text-muted); font-size:0.86rem; }
.spinner { width:19px; height:19px; border:2px solid var(--border-base); border-top-color:var(--accent); border-radius:50%; animation:spin 0.65s linear infinite; }
.divider { height:1px; background:var(--border-subtle); margin:14px 0; }

/* ── RESPONSIVE ── */
@media (max-width:1200px) {
  .dash-grid { grid-template-columns:1fr; }
  .dash-side { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
}
@media (max-width:1024px) {
  .stats-row { grid-template-columns:repeat(2,1fr); }
  .course-layout { grid-template-columns:1fr; }
  .lesson-sidebar { order:-1; }
}
@media (max-width:768px) {
  .sidebar { transform:translateX(-100%); }
  .sidebar.open { transform:translateX(0); box-shadow:8px 0 40px rgba(0,0,0,0.8); }
  .main-content { margin-left:0; }
  .hamburger { display:flex; }
  .page-body { padding:18px 14px; }
  .topbar { padding:0 14px; }
  .stats-row { grid-template-columns:1fr 1fr; }
  .levels-grid { grid-template-columns:1fr; }
  .lesson-content-card { padding:22px 18px; }
  .master-bar-card { flex-direction:column; align-items:flex-start; gap:10px; }
  .dash-side { grid-template-columns:1fr; }
}
@media (max-width:520px) {
  .stats-row { grid-template-columns:1fr; }
}
.sidebar-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.75); z-index:99; backdrop-filter:blur(4px); }
.sidebar-overlay.show { display:block; }