/* ============================================================
   SOCRATES — Design System v3 (Premium + Light Mode)
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ---- Dark Mode (default) ---- */
:root {
  --n950: #0C0F1A;
  --n900: #131826;
  --n800: #1A2133;
  --n750: #1C2840;
  --n700: #1E2D45;
  --n600: #253551;
  --ba: #4F8EF7;
  --pa: #8B5CF6;
  --ea: #10B981;
  --aa: #F59E0B;
  --ra: #EF4444;
  --txt: #E8EDF5;
  --txt2: #9EB3D4;
  --txt3: #556A8A;
  --txt-ai: #C4B5FD;
  --bg: var(--n950);
  --card: var(--n900);
  --card-border: rgba(255,255,255,0.07);
  --nav-bg: rgba(12,15,26,0.88);
  --input-bg: rgba(255,255,255,0.05);
  --input-border: rgba(255,255,255,0.10);
  --divider: rgba(255,255,255,0.06);
  --shadow: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.4);
  --font-serif: 'Lora', Georgia, serif;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t: 0.25s var(--ease);
  --t-slow: 0.5s var(--ease);
  --glow-b: 0 0 24px rgba(79,142,247,0.5), 0 0 60px rgba(79,142,247,0.2);
  --glow-g: 0 0 24px rgba(16,185,129,0.5), 0 0 60px rgba(16,185,129,0.2);
  --glow-p: 0 0 24px rgba(139,92,246,0.5), 0 0 60px rgba(139,92,246,0.2);
  --glow-a: 0 0 24px rgba(245,158,11,0.4), 0 0 60px rgba(245,158,11,0.15);
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

/* ---- Light Mode ---- */
body.light-mode {
  --n950: #F0F4FF;
  --n900: #FFFFFF;
  --n800: #F5F7FD;
  --n750: #EBF0FA;
  --n700: #DDE4F2;
  --n600: #C8D3EC;
  --txt: #0F1629;
  --txt2: #3D5080;
  --txt3: #6B80A8;
  --txt-ai: #6D28D9;
  --bg: var(--n950);
  --card: var(--n900);
  --card-border: rgba(0,0,0,0.08);
  --nav-bg: rgba(240,244,255,0.92);
  --input-bg: rgba(0,0,0,0.04);
  --input-border: rgba(0,0,0,0.12);
  --divider: rgba(0,0,0,0.07);
  --shadow: 0 4px 24px rgba(15,22,41,0.08);
  --shadow-lg: 0 16px 48px rgba(15,22,41,0.12);
  --ba: #2563EB;
  --pa: #7C3AED;
  --ea: #059669;
  --aa: #D97706;
  --ra: #DC2626;
  --glow-b: 0 0 16px rgba(37,99,235,0.25);
  --glow-g: 0 0 16px rgba(5,150,105,0.25);
  --glow-p: 0 0 16px rgba(124,58,237,0.25);
  --glow-a: 0 0 16px rgba(217,119,6,0.2);
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--txt);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s ease, color 0.4s ease;
}

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--n700); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--ba); }
::selection { background: rgba(79,142,247,0.2); color: var(--txt); }
:focus-visible { outline: 2px solid var(--ba); outline-offset: 3px; border-radius: 4px; }

/* ============================================================
   LOADING SCREEN
   ============================================================ */
#loading-screen {
  position: fixed; inset: 0;
  background: #0C0F1A;
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}
#loading-screen.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.loading-inner { text-align: center; position: relative; }
.loading-orb {
  position: absolute;
  width: 180px; height: 180px;
  background: conic-gradient(from 0deg, #4F8EF7, #8B5CF6, #10B981, #4F8EF7);
  border-radius: 50%;
  top: -24px; left: 50%; transform: translateX(-50%);
  filter: blur(44px); opacity: 0.28;
  animation: loadOrbSpin 3s linear infinite;
}
@keyframes loadOrbSpin { to { transform: translateX(-50%) rotate(360deg); } }
.loading-logo {
  font-family: var(--font-serif);
  font-size: 80px; font-weight: 700; line-height: 1;
  background: linear-gradient(135deg, #4F8EF7, #8B5CF6);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 8px; position: relative;
  animation: loadLogoPulse 2s ease-in-out infinite;
}
@keyframes loadLogoPulse {
  0%,100% { filter: drop-shadow(0 0 20px rgba(79,142,247,0.5)); }
  50% { filter: drop-shadow(0 0 40px rgba(139,92,246,0.7)); }
}
.loading-name { font-family: var(--font-serif); font-size: 22px; font-weight: 600; color: #E8EDF5; letter-spacing: 3px; margin-bottom: 4px; }
.loading-tagline { font-size: 12px; color: #556A8A; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 32px; }
.loading-bar-wrap { width: 160px; height: 2px; background: rgba(255,255,255,0.08); border-radius: 99px; overflow: hidden; margin: 0 auto; }
.loading-bar { height: 100%; border-radius: 99px; background: linear-gradient(90deg, #4F8EF7, #8B5CF6, #10B981, #4F8EF7); background-size: 300% 100%; animation: loadBar 1.6s ease-in-out infinite, loadGradient 2s linear infinite; }
@keyframes loadBar { 0% { width:0%;margin-left:0% } 50% { width:65%;margin-left:17% } 100% { width:0%;margin-left:100% } }
@keyframes loadGradient { to { background-position: -300% 0; } }

/* ============================================================
   APP SHELL
   ============================================================ */
#app { min-height: 100vh; opacity: 0; transition: opacity 0.3s ease; }
#app.visible { opacity: 1; }
.page-enter { animation: pageEnter 0.38s var(--ease) both; }
@keyframes pageEnter { from{opacity:0;transform:translateY(14px)} to{opacity:1;transform:none} }

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: 66px; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--nav-bg);
  backdrop-filter: blur(28px) saturate(1.8);
  border-bottom: 1px solid var(--card-border);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.nav.scrolled { box-shadow: 0 4px 28px rgba(0,0,0,0.15); border-bottom-color: var(--divider); }

.nav-logo {
  font-family: var(--font-serif); font-size: 20px; font-weight: 700;
  color: var(--txt); text-decoration: none;
  display: flex; align-items: center; gap: 10px; cursor: pointer; transition: var(--t);
}
.nav-logo:hover { color: var(--ba); }
.nav-logo-mark {
  width: 36px; height: 36px; border-radius: 11px;
  background: linear-gradient(135deg, var(--ba), var(--pa));
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 800; color: white;
  box-shadow: 0 4px 14px rgba(79,142,247,0.35); transition: var(--t);
}
.nav-logo:hover .nav-logo-mark { transform: rotate(-5deg) scale(1.07); box-shadow: var(--glow-b); }

.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-link {
  padding: 7px 13px; border-radius: 10px;
  color: var(--txt2); font-size: 14px; font-weight: 500;
  cursor: pointer; transition: var(--t);
  border: none; background: none; font-family: var(--font-sans);
}
.nav-link:hover { color: var(--txt); background: rgba(79,142,247,0.08); }
.nav-link.active { color: var(--ba); background: rgba(79,142,247,0.1); }

.nav-actions { display: flex; align-items: center; gap: 8px; }
.nav-icon-btn {
  width: 38px; height: 38px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: none; border: none; cursor: pointer;
  color: var(--txt2); font-size: 16px; transition: var(--t);
}
.nav-icon-btn:hover { background: rgba(79,142,247,0.08); color: var(--txt); }

.theme-toggle {
  width: 38px; height: 38px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--input-bg); border: 1px solid var(--input-border);
  cursor: pointer; font-size: 16px; transition: var(--t);
  color: var(--txt2);
}
.theme-toggle:hover { color: var(--aa); border-color: var(--aa); background: rgba(245,158,11,0.08); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 11px 22px; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; font-family: var(--font-sans);
  cursor: pointer; transition: var(--t); border: none;
  position: relative; overflow: hidden; white-space: nowrap; letter-spacing: 0.01em;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--ba), var(--pa));
  color: white;
  box-shadow: 0 4px 16px rgba(79,142,247,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
}
.btn-primary::after {
  content: '';
  position: absolute; top: -60%; left: -80%;
  width: 50%; height: 220%;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.2), transparent);
  transform: skewX(-20deg);
  animation: btnShimmer 3.5s ease-in-out infinite;
}
@keyframes btnShimmer { 0%{left:-80%} 100%{left:180%} }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(79,142,247,0.5), inset 0 1px 0 rgba(255,255,255,0.15); }
.btn-primary:active { transform: none; }

.btn-secondary {
  background: var(--card);
  color: var(--txt);
  border: 1px solid var(--card-border);
}
.btn-secondary:hover { background: var(--n800); border-color: rgba(79,142,247,0.35); transform: translateY(-1px); }

.btn-ghost { background: transparent; color: var(--txt2); border: 1px solid var(--card-border); }
.btn-ghost:hover { color: var(--txt); border-color: rgba(79,142,247,0.4); background: rgba(79,142,247,0.06); }

.btn-danger { background: rgba(239,68,68,0.1); color: var(--ra); border: 1px solid rgba(239,68,68,0.25); }
.btn-danger:hover { background: rgba(239,68,68,0.18); }

.btn-green { background: linear-gradient(135deg, var(--ea), #059669); color: white; box-shadow: 0 4px 16px rgba(16,185,129,0.3); }
.btn-green:hover { transform: translateY(-2px); box-shadow: var(--glow-g); }

.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 10px; gap: 5px; }
.btn-lg { padding: 14px 30px; font-size: 16px; border-radius: 16px; }
.btn-xl { padding: 17px 38px; font-size: 17px; border-radius: 18px; gap: 9px; letter-spacing: 0.02em; }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: var(--t);
  box-shadow: var(--shadow);
}
.card:hover { border-color: rgba(79,142,247,0.25); }

.card-glow {
  background: var(--card);
  border-radius: var(--radius-lg);
  position: relative; isolation: isolate;
}
.card-glow::before {
  content: ''; position: absolute; inset: 0;
  border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, rgba(79,142,247,0.45), rgba(139,92,246,0.3), rgba(16,185,129,0.15));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none; transition: var(--t-slow);
}
.card-glow:hover::before { background: linear-gradient(135deg, rgba(79,142,247,0.7), rgba(139,92,246,0.5), rgba(16,185,129,0.3)); }

.card-elevated {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--t-slow);
}
.card-elevated:hover { transform: translateY(-3px); }

/* ============================================================
   HERO — LANDING
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 120px 24px 80px;
  position: relative; overflow: hidden;
}
.hero-aurora { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.aurora-blob {
  position: absolute; border-radius: 50%; filter: blur(90px);
  animation: auroraDrift ease-in-out infinite; will-change: transform;
}
.aurora-1 { width:900px;height:700px; background:radial-gradient(ellipse,rgba(79,142,247,0.18) 0%,transparent 70%); top:-320px;left:-260px; animation-duration:22s; }
.aurora-2 { width:700px;height:600px; background:radial-gradient(ellipse,rgba(139,92,246,0.15) 0%,transparent 70%); bottom:-220px;right:-160px; animation-duration:28s;animation-delay:-10s; }
.aurora-3 { width:500px;height:500px; background:radial-gradient(ellipse,rgba(16,185,129,0.1) 0%,transparent 70%); top:35%;left:55%; animation-duration:18s;animation-delay:-5s; }
.aurora-4 { width:400px;height:350px; background:radial-gradient(ellipse,rgba(245,158,11,0.07) 0%,transparent 70%); top:65%;left:12%; animation-duration:32s;animation-delay:-15s; }
@keyframes auroraDrift {
  0%,100%{transform:translate(0,0) scale(1)} 25%{transform:translate(55px,-45px) scale(1.05)}
  50%{transform:translate(25px,65px) scale(0.95)} 75%{transform:translate(-45px,22px) scale(1.02)}
}

body.light-mode .aurora-1 { background: radial-gradient(ellipse,rgba(37,99,235,0.1) 0%,transparent 70%); }
body.light-mode .aurora-2 { background: radial-gradient(ellipse,rgba(124,58,237,0.08) 0%,transparent 70%); }
body.light-mode .aurora-3 { background: radial-gradient(ellipse,rgba(5,150,105,0.07) 0%,transparent 70%); }
body.light-mode .aurora-4 { background: radial-gradient(ellipse,rgba(217,119,6,0.05) 0%,transparent 70%); }

.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--divider) 1px,transparent 1px), linear-gradient(90deg,var(--divider) 1px,transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%,black 30%,transparent 100%);
}

.floating-concepts { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.concept-float {
  position: absolute; bottom: -30px; left: var(--fx, 50%);
  font-family: var(--font-serif); font-style: italic; font-size: 12px;
  color: rgba(79,142,247,0.15); white-space: nowrap;
  animation: conceptRise 14s ease-in var(--fd, 0s) infinite;
  transform: rotate(var(--fr, 0deg)); user-select: none;
}
body.light-mode .concept-float { color: rgba(37,99,235,0.12); }
@keyframes conceptRise {
  0%{opacity:0;transform:translateY(0) rotate(var(--fr,0deg))}
  8%{opacity:1}
  85%{opacity:0.12}
  100%{opacity:0;transform:translateY(-700px) rotate(calc(var(--fr,0deg) + 10deg))}
}

.hero-content { position: relative; z-index: 2; text-align: center; max-width: 880px; }

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

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.3);
  border-radius: 99px;
  font-size: 12px; font-weight: 600; color: var(--ba);
  margin-bottom: 36px; letter-spacing: 0.5px;
  backdrop-filter: blur(8px);
  opacity: 0; transform: translateY(16px);
  animation: heroFadeUp 0.7s ease 0.3s forwards;
}
body.light-mode .hero-badge { background: rgba(37,99,235,0.08); border-color: rgba(37,99,235,0.25); }
.badge-dot {
  width: 6px; height: 6px; background: var(--ba); border-radius: 50%;
  animation: badgePulse 2s ease-in-out infinite; box-shadow: 0 0 6px var(--ba);
}
@keyframes badgePulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.4;transform:scale(1.6)} }

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(42px, 7vw, 84px);
  font-weight: 700; line-height: 1.06; letter-spacing: -0.03em;
  color: var(--txt);
  margin-bottom: 28px; opacity: 0; transform: translateY(24px);
  animation: heroFadeUp 0.8s ease 0.5s forwards;
}
.hero-title-grad {
  background: linear-gradient(125deg, var(--ba) 0%, #7B6EF7 40%, var(--pa) 70%, var(--ea) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  background-size: 200% 100%;
  animation: titleGradShift 6s ease-in-out infinite alternate;
}
@keyframes titleGradShift { 0%{background-position:0%} 100%{background-position:100%} }

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--txt2); line-height: 1.75; max-width: 600px; margin: 0 auto 48px;
  opacity: 0; transform: translateY(20px);
  animation: heroFadeUp 0.7s ease 0.65s forwards;
}

.hero-actions {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 52px; opacity: 0; transform: translateY(20px);
  animation: heroFadeUp 0.6s ease 0.8s forwards;
}

.hero-social-proof {
  display: flex; align-items: center; gap: 12px;
  justify-content: center; margin-bottom: 52px; opacity: 0;
  animation: heroFadeUp 0.6s ease 0.95s forwards;
}
.avatars { display: flex; }
.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  border: 2px solid var(--bg); margin-left: -10px;
  background: linear-gradient(135deg, var(--ba), var(--pa));
  font-size: 10px; display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700;
}
.social-proof-text { font-size: 13px; color: var(--txt2); }
.social-proof-text strong { color: var(--txt); }

.demo-widget {
  background: var(--card);
  backdrop-filter: blur(24px);
  border-radius: var(--radius-xl);
  padding: 24px 28px; max-width: 640px; margin: 0 auto;
  text-align: left; opacity: 0; transform: translateY(32px);
  animation: heroFadeUp 0.7s ease 1.1s forwards;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--card-border);
}
.demo-widget::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--ba), var(--pa), var(--ea), var(--ba));
  background-size: 200% 100%; animation: loadGradient 3s linear infinite;
}
.demo-widget-label {
  font-size: 10px; text-transform: uppercase; letter-spacing: 2.5px;
  color: var(--txt3); margin-bottom: 14px;
  display: flex; align-items: center; gap: 7px; font-weight: 600;
}
.demo-live-dot { width: 6px; height: 6px; background: var(--ea); border-radius: 50%; animation: badgePulse 2s ease-in-out infinite; box-shadow: 0 0 6px var(--ea); }
.demo-messages { margin-bottom: 14px; min-height: 60px; display: flex; flex-direction: column; gap: 10px; }
.demo-msg { padding: 12px 16px; border-radius: 14px; font-size: 14px; line-height: 1.6; animation: msgIn 0.35s var(--ease-spring); }
@keyframes msgIn { from{opacity:0;transform:scale(0.94) translateY(6px)} to{opacity:1;transform:none} }
.demo-msg-ai {
  background: rgba(139,92,246,0.1);
  border-left: 3px solid var(--pa);
  color: var(--txt-ai);
  font-family: var(--font-serif); font-size: 15px;
  border-radius: 4px 14px 14px 14px;
}
body.light-mode .demo-msg-ai { background: rgba(124,58,237,0.07); color: #5B21B6; }
.demo-msg-user {
  background: rgba(79,142,247,0.1); border-left: 3px solid var(--ba);
  color: var(--txt); border-radius: 14px 14px 4px 14px; align-self: flex-end; max-width: 85%;
}
body.light-mode .demo-msg-user { background: rgba(37,99,235,0.08); }
.demo-input-row { display: flex; gap: 10px; }
.demo-input {
  flex: 1; background: var(--input-bg); border: 1px solid var(--input-border);
  border-radius: 12px; padding: 11px 16px;
  color: var(--txt); font-size: 14px; font-family: var(--font-sans); transition: var(--t);
}
.demo-input:focus { outline: none; border-color: rgba(79,142,247,0.5); background: rgba(79,142,247,0.06); box-shadow: 0 0 0 3px rgba(79,142,247,0.12); }
.demo-input::placeholder { color: var(--txt3); }

/* ============================================================
   LANDING SECTIONS
   ============================================================ */
.lp-section { padding: 96px 24px; }
.lp-section-inner { max-width: 1200px; margin: 0 auto; }
.lp-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 3px;
  color: var(--ba); margin-bottom: 14px;
}
.lp-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 700; line-height: 1.15; color: var(--txt);
  margin-bottom: 18px;
}
.lp-sub { font-size: 17px; color: var(--txt2); line-height: 1.8; max-width: 580px; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }

.stats-strip {
  display: grid; grid-template-columns: repeat(4,1fr);
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-xl); overflow: hidden;
  max-width: 920px; margin: 0 auto;
  box-shadow: var(--shadow);
}
.stat-cell { padding: 28px 20px; text-align: center; border-right: 1px solid var(--card-border); }
.stat-cell:last-child { border-right: none; }
.stat-num {
  font-family: var(--font-serif); font-size: 44px; font-weight: 700;
  background: linear-gradient(135deg, var(--ba), var(--pa));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  display: block; line-height: 1.1; margin-bottom: 6px;
}
.stat-lbl { font-size: 12px; color: var(--txt2); line-height: 1.5; font-weight: 500; }

.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 18px; margin-top: 56px; }
.feat-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-lg); padding: 28px;
  position: relative; overflow: hidden; transition: var(--t-slow);
  box-shadow: var(--shadow);
}
.feat-card-shine { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, transparent 60%); opacity: 0; transition: opacity 0.4s; }
.feat-card:hover { border-color: rgba(79,142,247,0.3); transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.feat-card:hover .feat-card-shine { opacity: 1; }
.feat-icon { width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 18px; position: relative; }
.feat-icon::after { content:''; position:absolute; inset:-4px; border-radius:18px; background:inherit; filter:blur(14px); opacity:0.3; z-index:-1; }
.feat-title { font-family: var(--font-serif); font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--txt); }
.feat-desc { font-size: 14px; color: var(--txt2); line-height: 1.7; }

.steps-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; margin-top: 56px; position: relative; }
.steps-grid::before { content:''; position:absolute; top:36px; left:16.7%; right:16.7%; height:1px; background:linear-gradient(90deg,transparent,var(--ba),var(--pa),transparent); opacity:0.35; }
.step-item { text-align: center; padding: 0 24px; }
.step-num { width:72px;height:72px;border-radius:50%; background:var(--card); border:1px solid rgba(79,142,247,0.3); display:flex;align-items:center;justify-content:center; font-family:var(--font-serif);font-size:28px;font-weight:700;color:var(--ba); margin:0 auto 20px; position:relative;z-index:1; box-shadow:0 0 0 6px var(--bg),var(--shadow); }
.step-title { font-family:var(--font-serif);font-size:17px;font-weight:600;margin-bottom:8px;color:var(--txt); }
.step-desc { font-size:13px;color:var(--txt2);line-height:1.65; }

.quote-section { background:linear-gradient(135deg,rgba(79,142,247,0.06),rgba(139,92,246,0.06)); border-top:1px solid rgba(79,142,247,0.1); border-bottom:1px solid rgba(139,92,246,0.08); padding:80px 24px; }
body.light-mode .quote-section { background:linear-gradient(135deg,rgba(37,99,235,0.04),rgba(124,58,237,0.04)); border-top-color:rgba(37,99,235,0.1); border-bottom-color:rgba(124,58,237,0.08); }
.big-quote { font-family:var(--font-serif);font-style:italic;font-size:clamp(18px,3vw,30px);font-weight:400;color:var(--txt);line-height:1.6;max-width:800px;margin:0 auto;text-align:center; }
.big-quote em { color:var(--ba);font-style:normal;font-weight:600; }

.scroll-hint { position:absolute;bottom:32px;left:50%;transform:translateX(-50%); display:flex;flex-direction:column;align-items:center;gap:8px; color:var(--txt3);font-size:11px;letter-spacing:2px;text-transform:uppercase; animation:scrollBob 2.5s ease-in-out infinite; }
@keyframes scrollBob { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(10px)} }
.scroll-mouse { width:22px;height:36px;border:1.5px solid var(--txt3);border-radius:99px;display:flex;align-items:flex-start;justify-content:center;padding-top:6px; }
.scroll-wheel { width:3px;height:7px;background:var(--ba);border-radius:99px;animation:scrollWheel 2s ease-in-out infinite; }
@keyframes scrollWheel { 0%{opacity:1;transform:translateY(0)} 100%{opacity:0;transform:translateY(12px)} }

/* ============================================================
   KNOWLEDGE MAP
   ============================================================ */
.map-container { position:relative;width:100%;height:100%;overflow:hidden;cursor:grab;border-radius:inherit;background:var(--n950); }
body.light-mode .map-container { background: #E8EEF8; }
.map-container:active { cursor: grabbing; }
.map-edge { stroke:rgba(30,58,95,0.5);stroke-width:1.5;fill:none;stroke-linecap:round;transition:stroke 0.4s; }
body.light-mode .map-edge { stroke: rgba(100,130,180,0.35); }
.map-edge-mastered { stroke:rgba(16,185,129,0.3); }
.map-edge-animated { stroke-dasharray:6 5; animation:edgeFlow 2.5s linear infinite; opacity:0.4; }
@keyframes edgeFlow { from{stroke-dashoffset:11} to{stroke-dashoffset:0} }
.map-node-group { cursor: pointer; }
.map-node-bg { transition: all 0.35s ease; }
.map-node-label { fill:var(--txt2);font-family:'Inter',sans-serif;font-size:10.5px;font-weight:500;text-anchor:middle;pointer-events:none; }
body.light-mode .map-node-label { fill: #3D5080; }
.node-mastered .map-node-bg { fill:rgba(16,185,129,0.14);stroke:var(--ea);stroke-width:2; }
.node-mastered .map-node-label { fill:var(--ea); }
.node-partial .map-node-bg { fill:rgba(245,158,11,0.12);stroke:var(--aa);stroke-width:1.5; }
.node-partial .map-node-label { fill:var(--aa); }
.node-empty .map-node-bg { fill:rgba(26,33,51,0.7);stroke:rgba(30,45,69,0.7);stroke-width:1.5; }
body.light-mode .node-empty .map-node-bg { fill:rgba(200,215,236,0.7);stroke:rgba(100,130,180,0.4); }
.node-active .map-node-bg { fill:rgba(79,142,247,0.16);stroke:var(--ba);stroke-width:2; }
.node-active .map-node-label { fill:var(--ba); }
@keyframes nodePulse { 0%{r:26;opacity:0.6} 100%{r:44;opacity:0} }
.node-pulse-ring { animation:nodePulse 1.8s ease-out infinite; }
@keyframes celebRing { 0%{r:28;opacity:0.8;stroke-width:2} 100%{r:56;opacity:0;stroke-width:0.5} }
.celebrate-ring { animation:celebRing 0.9s ease-out forwards; }

.map-controls { position:absolute;bottom:16px;right:16px;display:flex;flex-direction:column;gap:6px;z-index:10; }
.map-ctrl { width:32px;height:32px;background:var(--card);border:1px solid var(--card-border);border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--txt2);font-size:15px;transition:var(--t);backdrop-filter:blur(8px); }
.map-ctrl:hover { background:rgba(79,142,247,0.1);color:var(--ba);border-color:rgba(79,142,247,0.3); }

.map-legend { position:absolute;bottom:16px;left:16px;background:var(--card);backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:12px;padding:10px 14px;z-index:10; }
.legend-row { display:flex;align-items:center;gap:7px;font-size:11px;color:var(--txt2);margin-bottom:5px; }
.legend-row:last-child { margin-bottom:0; }
.legend-dot { width:9px;height:9px;border-radius:50%; }

.node-tooltip { position:absolute;background:var(--card);backdrop-filter:blur(16px);border:1px solid var(--card-border);border-radius:12px;padding:12px 16px;font-size:13px;pointer-events:none;z-index:50;max-width:200px;box-shadow:var(--shadow-lg);animation:tooltipIn 0.18s var(--ease-spring); }
@keyframes tooltipIn { from{opacity:0;transform:scale(0.88) translateY(4px)} to{opacity:1;transform:none} }
.tooltip-title { font-weight:600;color:var(--txt);margin-bottom:3px;font-size:13px; }
.tooltip-sub { color:var(--txt2);font-size:12px; }
.tooltip-action { color:var(--ba);font-size:11px;margin-top:5px; }

/* ============================================================
   STUDIO
   ============================================================ */
.studio-layout { display:grid;grid-template-columns:1fr 1fr;height:calc(100vh - 66px);margin-top:66px; }
.studio-panel { display:flex;flex-direction:column;overflow:hidden; }
.studio-panel-left { border-right:1px solid var(--divider); }
.studio-header { padding:14px 20px;border-bottom:1px solid var(--divider);display:flex;align-items:center;justify-content:space-between;background:var(--card);flex-shrink:0; }
.studio-title { font-family:var(--font-serif);font-size:15px;font-weight:600;color:var(--txt); }
.studio-sub { font-size:11px;color:var(--txt3);margin-top:1px; }

.session-timer { font-family:var(--font-mono);font-size:13px;color:var(--txt2);background:var(--input-bg);border:1px solid var(--input-border);border-radius:8px;padding:4px 10px;display:flex;align-items:center;gap:5px; }
.timer-dot { width:6px;height:6px;background:var(--ea);border-radius:50%;animation:badgePulse 2s ease-in-out infinite; }

.focus-mode .studio-panel:last-child { display:none; }
.focus-mode .studio-layout { grid-template-columns:1fr; }

.dialogue-scroll { flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px;scroll-behavior:smooth; }
.msg { max-width:90%;padding:13px 17px;border-radius:18px;font-size:15px;line-height:1.65;animation:msgIn 0.3s var(--ease-spring); }
.msg-ai {
  background:rgba(139,92,246,0.1);
  border:1px solid rgba(139,92,246,0.2);
  color:var(--txt-ai);
  font-family:var(--font-serif);font-size:16px;
  align-self:flex-start;
  border-radius:4px 18px 18px 18px;
}
body.light-mode .msg-ai { background:rgba(124,58,237,0.07);border-color:rgba(124,58,237,0.2);color:#5B21B6; }
.msg-user {
  background:rgba(79,142,247,0.12);
  border:1px solid rgba(79,142,247,0.22);
  color:var(--txt);
  align-self:flex-end;
  border-radius:18px 18px 4px 18px;
}
body.light-mode .msg-user { background:rgba(37,99,235,0.08);border-color:rgba(37,99,235,0.2); }
.msg-system { font-size:11.5px;color:var(--txt3);align-self:center;background:var(--input-bg);border:1px solid var(--card-border);border-radius:99px;padding:5px 14px;font-family:var(--font-mono); }
.msg-typing { display:flex;gap:5px;padding:14px 18px;align-items:center; }
.typing-dot { width:7px;height:7px;background:var(--pa);border-radius:50%;animation:typingBounce 1.3s ease-in-out infinite; }
.typing-dot:nth-child(2){animation-delay:0.15s}.typing-dot:nth-child(3){animation-delay:0.3s}
@keyframes typingBounce { 0%,60%,100%{transform:translateY(0);opacity:0.4} 30%{transform:translateY(-7px);opacity:1} }
.stream-cursor { display:inline-block;width:2px;height:1.1em;background:var(--pa);vertical-align:text-bottom;animation:cursorBlink 0.8s step-end infinite;margin-left:2px; }
@keyframes cursorBlink { 0%,100%{opacity:1} 50%{opacity:0} }

.exp-modes { display:flex;gap:6px;flex-wrap:wrap;padding:10px 16px;border-top:1px solid var(--divider);background:var(--card);flex-shrink:0; }
.exp-label { font-size:11px;color:var(--txt3);align-self:center;flex-shrink:0;font-weight:600; }
.mode-chip { padding:5px 12px;border-radius:99px;font-size:12px;font-weight:500;cursor:pointer;transition:var(--t);border:1px solid var(--card-border);background:var(--input-bg);color:var(--txt2); }
.mode-chip:hover { border-color:var(--pa);color:var(--pa);background:rgba(139,92,246,0.08); }
.mode-chip.active { background:rgba(139,92,246,0.15);border-color:var(--pa);color:var(--pa); }

.dialogue-input-wrap { padding:14px 16px;border-top:1px solid var(--divider);background:var(--card);flex-shrink:0; }
.input-row { display:flex;gap:8px;align-items:flex-end; }
.dialogue-input { flex:1;background:var(--input-bg);border:1px solid var(--input-border);border-radius:14px;padding:11px 15px;color:var(--txt);font-size:14.5px;font-family:var(--font-sans);resize:none;min-height:46px;max-height:120px;line-height:1.5;transition:var(--t); }
.dialogue-input:focus { outline:none;border-color:rgba(79,142,247,0.5);background:rgba(79,142,247,0.05);box-shadow:0 0 0 3px rgba(79,142,247,0.1); }
.dialogue-input::placeholder { color:var(--txt3); }
.input-actions { display:flex;gap:6px; }
.send-btn { width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--ba),var(--pa));border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--t);flex-shrink:0;box-shadow:0 4px 14px rgba(79,142,247,0.35); }
.send-btn:hover { transform:scale(1.07);box-shadow:var(--glow-b); }
.send-btn:disabled { opacity:0.4;cursor:not-allowed;transform:none; }
.voice-btn { width:46px;height:46px;border-radius:14px;background:var(--input-bg);border:1px solid var(--input-border);cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--txt2);font-size:18px;transition:var(--t);flex-shrink:0; }
.voice-btn:hover { background:rgba(16,185,129,0.1);color:var(--ea);border-color:var(--ea); }
.voice-btn.recording { background:rgba(239,68,68,0.1);color:var(--ra);border-color:var(--ra);animation:recordPulse 1s ease-in-out infinite; }
@keyframes recordPulse { 0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,0.3)} 50%{box-shadow:0 0 0 8px rgba(239,68,68,0)} }
.input-hint { font-size:11px;color:var(--txt3);margin-top:6px; }

/* ============================================================
   ONBOARDING
   ============================================================ */
.onboard-wrap { min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 24px;position:relative;overflow:hidden; }
.onboard-bg { position:absolute;inset:0;background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(79,142,247,0.07),transparent);pointer-events:none; }
body.light-mode .onboard-bg { background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(37,99,235,0.05),transparent); }
.onboard-progress { display:flex;gap:6px;margin-bottom:48px; }
.onboard-pip { height:4px;border-radius:99px;background:var(--n700);transition:var(--t-slow); }
.onboard-pip.done { background:var(--ea);width:20px!important; }
.onboard-pip.active { background:var(--ba);box-shadow:0 0 8px var(--ba); }

.onboard-card { background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:44px;max-width:720px;width:100%;box-shadow:var(--shadow-lg);animation:cardIn 0.4s var(--ease-spring);position:relative;overflow:hidden; }
.onboard-card::before { content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(79,142,247,0.5),transparent); }
@keyframes cardIn { from{opacity:0;transform:scale(0.94) translateY(20px)} to{opacity:1;transform:none} }
.onboard-title { font-family:var(--font-serif);font-size:26px;font-weight:700;margin-bottom:8px;color:var(--txt); }
.onboard-sub { color:var(--txt2);margin-bottom:32px;font-size:15px;line-height:1.65; }

.subject-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px;margin-bottom:28px; }
.subject-tile { background:var(--input-bg);border:1.5px solid var(--card-border);border-radius:14px;padding:18px 14px;text-align:center;cursor:pointer;transition:var(--t-slow); }
.subject-tile:hover { border-color:var(--ba);background:rgba(79,142,247,0.07);transform:translateY(-2px); }
.subject-tile.selected { border-color:var(--ba);background:rgba(79,142,247,0.1);box-shadow:0 0 0 1px rgba(79,142,247,0.3); }
.subject-tile-icon { font-size:30px;margin-bottom:8px; }
.subject-tile-name { font-size:13px;font-weight:600;color:var(--txt); }

.diag-progress-track { height:3px;background:var(--n700);border-radius:99px;margin-bottom:28px;overflow:hidden; }
.diag-progress-fill { height:100%;background:linear-gradient(90deg,var(--ba),var(--pa));border-radius:99px;transition:width 0.5s var(--ease); }
.diag-concept-tag { font-size:12px;color:var(--ba);font-weight:700;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px; }
.diag-q { font-family:var(--font-serif);font-size:20px;font-weight:600;line-height:1.45;margin-bottom:24px;color:var(--txt); }
.diag-options { display:flex;flex-direction:column;gap:9px; }
.diag-opt { display:flex;align-items:center;gap:13px;padding:13px 17px;background:var(--input-bg);border:1.5px solid var(--card-border);border-radius:13px;cursor:pointer;transition:var(--t);font-size:15px;color:var(--txt); }
.diag-opt:hover { border-color:var(--ba);background:rgba(79,142,247,0.06); }
.diag-opt.correct { border-color:var(--ea);background:rgba(16,185,129,0.08); }
.diag-opt.wrong { border-color:var(--ra);background:rgba(239,68,68,0.06); }
.diag-opt.disabled { pointer-events:none;opacity:0.65; }
.diag-letter { width:28px;height:28px;border-radius:8px;background:var(--n700);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;font-family:var(--font-mono);flex-shrink:0;transition:var(--t);color:var(--txt); }
.diag-opt:hover .diag-letter { background:var(--ba);color:white; }
.diag-opt.correct .diag-letter { background:var(--ea);color:white; }
.diag-opt.wrong .diag-letter { background:var(--ra);color:white; }
.map-reveal-box { width:100%;height:380px;border-radius:16px;overflow:hidden;border:1px solid var(--card-border);background:var(--n950);margin-bottom:24px; }

/* ============================================================
   DASHBOARD
   ============================================================ */
.dash-wrap { max-width:1220px;margin:0 auto;padding:88px 24px 60px; }
.dash-grid { display:grid;grid-template-columns:2fr 1fr;gap:20px;margin-top:20px; }
.dash-card { background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow); }
.dash-card-title { font-family:var(--font-serif);font-size:16px;font-weight:600;margin-bottom:18px;color:var(--txt); }

.stats-row-4 { display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px; }
.stat-mini { background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:18px;text-align:center;transition:var(--t-slow);position:relative;overflow:hidden;box-shadow:var(--shadow); }
.stat-mini::before { content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--c,var(--ba)),transparent);opacity:0.7; }
.stat-mini:hover { transform:translateY(-2px);border-color:rgba(79,142,247,0.25);box-shadow:var(--shadow-lg); }
.stat-mini-icon { font-size:22px;margin-bottom:8px; }
.stat-mini-num { font-family:var(--font-serif);font-size:30px;font-weight:700;line-height:1;margin-bottom:4px;color:var(--c,var(--ba)); }
.stat-mini-lbl { font-size:11.5px;color:var(--txt2);font-weight:500; }

.mastery-bar-row { display:flex;align-items:center;gap:10px;margin-bottom:12px; }
.mastery-bar-label { font-size:13px;color:var(--txt2);width:130px;flex-shrink:0;display:flex;align-items:center;gap:6px; }
.mastery-bar-track { flex:1;height:5px;background:var(--n700);border-radius:99px;overflow:hidden; }
.mastery-bar-fill { height:100%;border-radius:99px;transition:width 1.2s var(--ease); }
.mastery-bar-pct { font-size:12px;color:var(--txt3);width:34px;text-align:right;font-family:var(--font-mono); }

.streak-cal { display:grid;grid-template-columns:repeat(7,1fr);gap:3px; }
.streak-cell { aspect-ratio:1;border-radius:3px;background:var(--n700);transition:var(--t); }
.streak-cell.done { background:rgba(16,185,129,0.4); }
.streak-cell.today { background:var(--ea);box-shadow:0 0 8px var(--ea); }

.weekly-summary-card { background:linear-gradient(135deg,rgba(79,142,247,0.07),rgba(139,92,246,0.07));border:1px solid rgba(79,142,247,0.15);border-radius:var(--radius-lg);padding:22px;margin-bottom:20px;position:relative;overflow:hidden; }
body.light-mode .weekly-summary-card { background:linear-gradient(135deg,rgba(37,99,235,0.05),rgba(124,58,237,0.05));border-color:rgba(37,99,235,0.15); }
.weekly-summary-card::before { content:'"';position:absolute;top:-24px;right:16px;font-size:140px;font-family:var(--font-serif);color:rgba(79,142,247,0.07);line-height:1;pointer-events:none; }
.weekly-ai-tag { font-size:10px;text-transform:uppercase;letter-spacing:2px;color:var(--ba);margin-bottom:8px;font-weight:700; }
.weekly-text { font-family:var(--font-serif);font-size:15px;line-height:1.8;color:var(--txt);font-style:italic; }

.session-row { display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--divider); }
.session-row:last-child { border-bottom:none; }

/* ============================================================
   PRACTICE
   ============================================================ */
.practice-wrap { max-width:740px;margin:0 auto;padding:88px 24px 60px; }
.practice-card { background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:30px;margin-bottom:18px;position:relative;overflow:hidden;transition:var(--t-slow);box-shadow:var(--shadow); }
.practice-card:hover { border-color:rgba(79,142,247,0.25);transform:translateX(2px); }
.practice-top-bar { position:absolute;top:0;left:0;right:0;height:3px; }
.diff-pill { display:inline-block;padding:3px 11px;border-radius:99px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;margin-bottom:14px; }
.diff-basic { background:rgba(16,185,129,0.1);color:var(--ea);border:1px solid rgba(16,185,129,0.25); }
.diff-application { background:rgba(79,142,247,0.1);color:var(--ba);border:1px solid rgba(79,142,247,0.25); }
.diff-mastery { background:rgba(139,92,246,0.1);color:var(--pa);border:1px solid rgba(139,92,246,0.25); }
.practice-q { font-family:var(--font-serif);font-size:18px;line-height:1.55;margin-bottom:18px;color:var(--txt); }
.practice-textarea { width:100%;background:var(--input-bg);border:1px solid var(--input-border);border-radius:12px;padding:13px 16px;color:var(--txt);font-size:15px;font-family:var(--font-sans);resize:vertical;min-height:80px;transition:var(--t); }
.practice-textarea:focus { outline:none;border-color:rgba(79,142,247,0.45);background:rgba(79,142,247,0.04);box-shadow:0 0 0 3px rgba(79,142,247,0.1); }
.practice-textarea::placeholder { color:var(--txt3); }
.practice-feedback { padding:13px 17px;border-radius:12px;margin-top:14px;font-size:14px;line-height:1.65;animation:msgIn 0.3s ease; }
.fb-correct { background:rgba(16,185,129,0.08);border:1px solid rgba(16,185,129,0.25);color:var(--ea); }
body.light-mode .fb-correct { color:#065F46; }
.fb-wrong { background:rgba(245,158,11,0.07);border:1px solid rgba(245,158,11,0.22);color:var(--aa); }
body.light-mode .fb-wrong { color:#92400E; }

/* ============================================================
   LIBRARY
   ============================================================ */
.library-wrap { max-width:1220px;margin:0 auto;padding:88px 24px 60px; }
.library-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;margin-top:28px; }
.lib-card { background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:22px;cursor:pointer;transition:var(--t-slow);position:relative;overflow:hidden;box-shadow:var(--shadow); }
.lib-card-glow { position:absolute;width:120px;height:120px;border-radius:50%;top:-30px;right:-30px;opacity:0.07;transition:var(--t-slow);filter:blur(24px); }
.lib-card:hover { border-color:rgba(79,142,247,0.35);transform:translateY(-5px);box-shadow:var(--shadow-lg); }
.lib-card:hover .lib-card-glow { opacity:0.15;transform:scale(1.3); }
.lib-icon { font-size:34px;margin-bottom:12px; }
.lib-name { font-family:var(--font-serif);font-size:19px;font-weight:700;margin-bottom:4px;color:var(--txt); }
.lib-count { font-size:12px;color:var(--txt3);margin-bottom:14px; }
.lib-map-preview { height:76px;border-radius:10px;overflow:hidden;background:var(--n950); }
body.light-mode .lib-map-preview { background:#DDE4F2; }
.lib-progress-pill { display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;margin-top:10px;padding:4px 11px;border-radius:99px; }
.pill-none { background:var(--input-bg);color:var(--txt3);border:1px solid var(--card-border); }
.pill-started { background:rgba(245,158,11,0.1);color:var(--aa);border:1px solid rgba(245,158,11,0.25); }
.pill-mid { background:rgba(79,142,247,0.1);color:var(--ba);border:1px solid rgba(79,142,247,0.25); }
.pill-done { background:rgba(16,185,129,0.1);color:var(--ea);border:1px solid rgba(16,185,129,0.25); }

/* ============================================================
   TEACHER
   ============================================================ */
.teacher-wrap { max-width:1320px;margin:0 auto;padding:88px 24px 60px; }
.heat-table { width:100%;border-collapse:separate;border-spacing:3px;min-width:700px; }
.heat-cell { width:40px;height:38px;border-radius:6px;text-align:center;vertical-align:middle;font-size:10px;font-family:var(--font-mono);font-weight:600;transition:var(--t);cursor:pointer; }
.heat-cell:hover { transform:scale(1.15);z-index:1;position:relative; }
.heat-0 { background:var(--input-bg);color:var(--txt3); }
.heat-1 { background:rgba(245,158,11,0.12);color:var(--aa); }
.heat-2 { background:rgba(245,158,11,0.3);color:var(--aa); }
.heat-3 { background:rgba(16,185,129,0.18);color:var(--ea); }
.heat-4 { background:rgba(16,185,129,0.5);color:white; }
.heat-lbl { font-size:12px;color:var(--txt2);padding:4px 8px;white-space:nowrap; }
.heat-c-lbl { font-size:9.5px;color:var(--txt3);padding:4px 2px;text-align:center;white-space:nowrap;max-width:56px;overflow:hidden; }

/* ============================================================
   ACHIEVEMENTS
   ============================================================ */
.achievement-popup { position:fixed;bottom:80px;right:24px;z-index:9997;background:var(--card);border:1px solid rgba(245,158,11,0.4);border-radius:18px;padding:16px 20px;display:flex;align-items:center;gap:14px;max-width:320px;box-shadow:var(--shadow-lg),0 0 0 1px rgba(245,158,11,0.1);animation:achieveIn 0.5s var(--ease-spring);backdrop-filter:blur(16px); }
.achievement-popup.hidden { display:none; }
@keyframes achieveIn { from{opacity:0;transform:translateX(80px) scale(0.85)} to{opacity:1;transform:none} }
@keyframes achieveOut { to{opacity:0;transform:translateX(80px) scale(0.9)} }
.achieve-icon { font-size:36px;flex-shrink:0;filter:drop-shadow(0 0 12px rgba(245,158,11,0.5)); }
.achieve-label { font-size:10px;text-transform:uppercase;letter-spacing:1.5px;color:var(--aa);font-weight:700;margin-bottom:2px; }
.achieve-name { font-family:var(--font-serif);font-size:16px;font-weight:700;color:var(--txt);margin-bottom:1px; }
.achieve-desc { font-size:12px;color:var(--txt2); }

.achievements-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px;margin-top:20px; }
.achieve-card { background:var(--input-bg);border:1px solid var(--card-border);border-radius:var(--radius);padding:20px;text-align:center;transition:var(--t-slow); }
.achieve-card.locked { opacity:0.4;filter:grayscale(0.7); }
.achieve-card.unlocked { border-color:rgba(245,158,11,0.35);background:rgba(245,158,11,0.04); }
.achieve-card.unlocked:hover { transform:translateY(-3px);box-shadow:0 12px 32px rgba(245,158,11,0.15); }
.achieve-card-icon { font-size:34px;margin-bottom:10px; }
.achieve-card-name { font-weight:700;font-size:14px;margin-bottom:4px;color:var(--txt); }
.achieve-card-desc { font-size:12px;color:var(--txt2);line-height:1.5; }

/* ============================================================
   STUDY PLAN
   ============================================================ */
.plan-wrap { max-width:860px;margin:0 auto;padding:88px 24px 60px; }
.plan-day { background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:22px;margin-bottom:14px;position:relative;overflow:hidden;transition:var(--t-slow);box-shadow:var(--shadow); }
.plan-day::before { content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c,var(--ba));border-radius:3px 0 0 3px; }
.plan-day:hover { border-color:rgba(79,142,247,0.25);transform:translateX(3px);box-shadow:var(--shadow-lg); }
.plan-day-label { font-size:11px;text-transform:uppercase;letter-spacing:2px;color:var(--txt3);margin-bottom:6px;font-weight:600; }
.plan-concept { font-family:var(--font-serif);font-size:18px;font-weight:600;margin-bottom:5px;color:var(--txt); }
.plan-desc { font-size:13px;color:var(--txt2);line-height:1.65; }
.plan-duration { font-size:12px;color:var(--txt3);margin-top:8px;font-family:var(--font-mono); }

/* ============================================================
   SEARCH
   ============================================================ */
.search-wrap { max-width:760px;margin:0 auto;padding:88px 24px 60px; }
.search-input-big { width:100%;background:var(--card);border:1.5px solid var(--card-border);border-radius:18px;padding:18px 24px;color:var(--txt);font-size:18px;font-family:var(--font-sans);transition:var(--t);margin:24px 0 16px;box-shadow:var(--shadow); }
.search-input-big:focus { outline:none;border-color:rgba(79,142,247,0.5);box-shadow:0 0 0 4px rgba(79,142,247,0.1); }
.search-input-big::placeholder { color:var(--txt3); }
.search-result { display:flex;align-items:center;gap:14px;padding:14px 18px;background:var(--card);border:1px solid var(--card-border);border-radius:14px;cursor:pointer;transition:var(--t-slow);margin-bottom:8px;box-shadow:var(--shadow); }
.search-result:hover { border-color:rgba(79,142,247,0.35);transform:translateX(4px);background:rgba(79,142,247,0.04); }
.search-result-icon { font-size:20px;flex-shrink:0; }
.search-result-label { font-weight:600;font-size:15px;color:var(--txt); }
.search-result-sub { font-size:12px;color:var(--txt2); }
.search-result-action { margin-left:auto;font-size:12px;color:var(--ba);flex-shrink:0;font-weight:600; }

/* ============================================================
   SETTINGS
   ============================================================ */
.settings-wrap { max-width:740px;margin:0 auto;padding:88px 24px 60px; }
.settings-section { background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:24px;margin-bottom:18px;box-shadow:var(--shadow); }
.settings-section-title { font-family:var(--font-serif);font-size:17px;font-weight:600;margin-bottom:18px;color:var(--txt); }
.setting-row { display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--divider); }
.setting-row:last-child { border-bottom:none; }
.setting-lbl { font-size:14px;font-weight:500;color:var(--txt); }
.setting-desc { font-size:12px;color:var(--txt3);margin-top:1px; }

.toggle { position:relative;width:44px;height:24px;flex-shrink:0; }
.toggle input { opacity:0;width:0;height:0; }
.toggle-track { position:absolute;inset:0;background:var(--n700);border-radius:99px;cursor:pointer;transition:var(--t);border:1px solid var(--card-border); }
.toggle-track::before { content:'';position:absolute;width:18px;height:18px;left:2px;top:2px;background:white;border-radius:50%;transition:var(--t); }
.toggle input:checked + .toggle-track { background:var(--ba);border-color:var(--ba);box-shadow:0 0 8px rgba(79,142,247,0.35); }
.toggle input:checked + .toggle-track::before { transform:translateX(20px); }

.setting-select { background:var(--input-bg);border:1px solid var(--input-border);border-radius:10px;padding:8px 12px;color:var(--txt);font-size:13px;cursor:pointer;transition:var(--t);font-family:var(--font-sans); }
.setting-select:focus { outline:none;border-color:var(--ba); }

.key-input { background:var(--input-bg);border:1px solid var(--input-border);border-radius:10px;padding:11px 14px;color:var(--txt);font-size:14px;font-family:var(--font-mono);width:100%;margin-top:8px;transition:var(--t); }
.key-input:focus { outline:none;border-color:var(--ba);box-shadow:0 0 0 3px rgba(79,142,247,0.12); }
.key-input::placeholder { color:var(--txt3); }

.api-status-bar { display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:12px;font-size:13px;margin-top:12px; }
.api-status-bar.connected { background:rgba(16,185,129,0.1);border:1px solid rgba(16,185,129,0.25);color:var(--ea); }
.api-status-bar.disconnected { background:rgba(245,158,11,0.08);border:1px solid rgba(245,158,11,0.2);color:var(--aa); }

/* ============================================================
   TOASTS
   ============================================================ */
#toast-container { position:fixed;bottom:20px;right:20px;z-index:9998;display:flex;flex-direction:column;gap:8px;pointer-events:none; }
.toast { padding:11px 18px;border-radius:12px;font-size:14px;font-weight:500;pointer-events:all;display:flex;align-items:center;gap:9px;max-width:380px;min-width:200px;backdrop-filter:blur(16px);box-shadow:var(--shadow-lg);animation:toastIn 0.4s var(--ease-spring); }
@keyframes toastIn { from{opacity:0;transform:translateX(60px) scale(0.88)} to{opacity:1;transform:none} }
.toast-out { animation:toastOut 0.3s ease forwards; }
@keyframes toastOut { to{opacity:0;transform:translateX(60px) scale(0.9)} }
.toast-success { background:var(--card);border:1px solid rgba(16,185,129,0.4);color:var(--ea); }
.toast-error { background:var(--card);border:1px solid rgba(239,68,68,0.4);color:var(--ra); }
.toast-info { background:var(--card);border:1px solid rgba(79,142,247,0.35);color:var(--ba); }
.toast-warn { background:var(--card);border:1px solid rgba(245,158,11,0.35);color:var(--aa); }

/* ============================================================
   MODAL
   ============================================================ */
#modal-overlay { position:fixed;inset:0;background:rgba(8,10,20,0.75);backdrop-filter:blur(12px);z-index:9000;display:flex;align-items:center;justify-content:center;padding:24px; }
#modal-overlay.hidden { display:none; }
body.light-mode #modal-overlay { background:rgba(15,22,41,0.5); }
#modal-box { background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-xl);padding:32px;max-width:540px;width:100%;box-shadow:var(--shadow-lg);animation:modalIn 0.35s var(--ease-spring);position:relative;overflow:hidden; }
#modal-box::before { content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(79,142,247,0.45),transparent); }
@keyframes modalIn { from{opacity:0;transform:scale(0.88) translateY(20px)} to{opacity:1;transform:none} }
.modal-title { font-family:var(--font-serif);font-size:22px;font-weight:700;margin-bottom:10px;color:var(--txt); }
.modal-body { color:var(--txt2);margin-bottom:24px;line-height:1.7;font-size:15px; }
.modal-actions { display:flex;gap:10px;justify-content:flex-end; }

/* ============================================================
   UTILITIES
   ============================================================ */
.page-header { margin-bottom:28px; }
.page-title { font-family:var(--font-serif);font-size:clamp(22px,3vw,34px);font-weight:700;margin-bottom:6px;color:var(--txt); }
.page-sub { color:var(--txt2);font-size:15px;line-height:1.65; }
.section-title-sm { font-family:var(--font-serif);font-size:16px;font-weight:600;margin-bottom:14px;color:var(--txt); }
.divider { height:1px;background:var(--divider);margin:20px 0; }
.badge { display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:600; }
.badge-blue { background:rgba(79,142,247,0.1);color:var(--ba);border:1px solid rgba(79,142,247,0.25); }
.badge-green { background:rgba(16,185,129,0.1);color:var(--ea);border:1px solid rgba(16,185,129,0.25); }
.badge-amber { background:rgba(245,158,11,0.1);color:var(--aa);border:1px solid rgba(245,158,11,0.25); }
.badge-purple { background:rgba(139,92,246,0.1);color:var(--pa);border:1px solid rgba(139,92,246,0.25); }
.empty-state { text-align:center;padding:60px 24px; }
.empty-icon { font-size:48px;margin-bottom:14px;opacity:0.4; }
.empty-text { font-size:15px;color:var(--txt2); }
.empty-action { margin-top:20px; }
.kbd { background:var(--input-bg);border:1px solid var(--input-border);border-radius:6px;padding:2px 8px;font-size:12px;font-family:var(--font-mono);color:var(--txt2); }

#confetti-canvas { position:fixed;inset:0;pointer-events:none;z-index:9996; }

.summary-bullets { list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:12px; }
.summary-bullet { display:flex;gap:10px;font-size:14px;line-height:1.6;color:var(--txt2); }
.summary-bullet-icon { flex-shrink:0;color:var(--ba); }

/* ============================================================
   FLASHCARDS
   ============================================================ */
.fc-wrap { max-width:820px;margin:0 auto;padding:88px 24px 60px; }
.fc-header { display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:12px; }

.fc-stats-bar { display:flex;align-items:center;gap:0;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:16px 24px;margin-bottom:28px;box-shadow:var(--shadow); }
.fc-stat { display:flex;flex-direction:column;align-items:center;gap:3px;flex:1; }
.fc-stat-num { font-family:var(--font-serif);font-size:24px;font-weight:700;line-height:1; }
.fc-stat-lbl { font-size:11px;color:var(--txt3);text-transform:uppercase;letter-spacing:1px; }
.fc-stat-divider { width:1px;height:36px;background:var(--divider);flex-shrink:0;margin:0 8px; }

.fc-arena { display:flex;flex-direction:column;align-items:center; }
.fc-progress-bar-wrap { width:100%;height:3px;background:var(--n700);border-radius:99px;overflow:hidden;margin-bottom:16px; }
.fc-progress-bar { height:100%;background:linear-gradient(90deg,var(--ba),var(--pa));border-radius:99px;transition:width 0.5s var(--ease); }

.fc-card-wrap { perspective:1200px;width:100%;max-width:600px;margin:0 auto 28px; }
.fc-card { width:100%;min-height:280px;cursor:pointer;transform-style:preserve-3d; }
.fc-card-inner { position:relative;width:100%;min-height:280px;transition:transform 0.55s cubic-bezier(0.4,0,0.2,1);transform-style:preserve-3d; }
.fc-card-inner.flipped { transform:rotateY(180deg); }
.fc-card-front, .fc-card-back {
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-xl);
  padding:40px 36px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;box-shadow:var(--shadow-lg);
}
.fc-card-back { transform:rotateY(180deg);background:linear-gradient(135deg,var(--n900),rgba(79,142,247,0.04)); }
body.light-mode .fc-card-back { background:linear-gradient(135deg,#fff,rgba(37,99,235,0.03)); }
.fc-card-front::before,.fc-card-back::before { content:'';position:absolute;top:0;left:0;right:0;height:2px;border-radius:var(--radius-xl) var(--radius-xl) 0 0; }
.fc-card-front::before { background:linear-gradient(90deg,var(--ba),var(--pa)); }
.fc-card-back::before { background:linear-gradient(90deg,var(--pa),var(--ea)); }
.fc-card-node-tag { font-size:11px;text-transform:uppercase;letter-spacing:2px;color:var(--ba);font-weight:700;margin-bottom:20px;background:rgba(79,142,247,0.1);padding:4px 14px;border-radius:99px; }
.fc-card-question { font-family:var(--font-serif);font-size:22px;font-weight:600;line-height:1.4;color:var(--txt);margin-bottom:20px; }
.fc-card-answer { font-family:var(--font-serif);font-size:17px;line-height:1.65;color:var(--txt);margin-bottom:20px; }
.fc-card-hint { font-size:12px;color:var(--txt3);letter-spacing:0.5px; }

.fc-ratings { display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:8px; }
.fc-ratings.hidden { display:none; }
.fc-rate-btn { display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 20px;border-radius:var(--radius);border:1.5px solid var(--card-border);background:var(--card);cursor:pointer;transition:var(--t-slow);min-width:80px; }
.fc-rate-btn:hover { transform:translateY(-3px);box-shadow:var(--shadow-lg); }
.fc-rate-icon { font-size:18px;font-weight:700;line-height:1; }
.fc-rate-label { font-size:13px;font-weight:600;color:var(--txt); }
.fc-rate-interval { font-size:11px;color:var(--txt3);font-family:var(--font-mono); }
.fc-rate-wrong { border-color:rgba(239,68,68,0.3); }
.fc-rate-wrong:hover { background:rgba(239,68,68,0.08);border-color:var(--ra); }
.fc-rate-wrong .fc-rate-icon { color:var(--ra); }
.fc-rate-hard { border-color:rgba(245,158,11,0.3); }
.fc-rate-hard:hover { background:rgba(245,158,11,0.08);border-color:var(--aa); }
.fc-rate-hard .fc-rate-icon { color:var(--aa); }
.fc-rate-ok { border-color:rgba(79,142,247,0.3); }
.fc-rate-ok:hover { background:rgba(79,142,247,0.08);border-color:var(--ba); }
.fc-rate-ok .fc-rate-icon { color:var(--ba); }
.fc-rate-easy { border-color:rgba(16,185,129,0.3); }
.fc-rate-easy:hover { background:rgba(16,185,129,0.08);border-color:var(--ea); }
.fc-rate-easy .fc-rate-icon { color:var(--ea); }

.fc-done-state { text-align:center;padding:60px 24px; }
@keyframes fcSwipe { to{opacity:0;transform:translateX(-40px)} }
@keyframes fcSwipeIn { from{opacity:0;transform:translateX(40px)} to{opacity:1;transform:none} }

/* ============================================================
   POMODORO TIMER
   ============================================================ */
.pomo-widget {
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);
  padding:14px 18px;display:flex;align-items:center;gap:12px;
  box-shadow:var(--shadow);transition:var(--t);
}
.pomo-ring-wrap { position:relative;width:44px;height:44px;flex-shrink:0; }
.pomo-ring { transform:rotate(-90deg); }
.pomo-ring-bg { fill:none;stroke:var(--n700);stroke-width:3; }
.pomo-ring-fill { fill:none;stroke:var(--ba);stroke-width:3;stroke-linecap:round;transition:stroke-dashoffset 1s linear,stroke 0.3s ease; }
.pomo-ring-fill.break { stroke:var(--ea); }
.pomo-ring-fill.warning { stroke:var(--aa); }
.pomo-time { position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:11px;font-weight:600;color:var(--txt); }
.pomo-info { flex:1;min-width:0; }
.pomo-label { font-size:11px;text-transform:uppercase;letter-spacing:1.5px;color:var(--txt3);font-weight:600;margin-bottom:2px; }
.pomo-phase { font-size:13px;color:var(--txt);font-weight:500; }
.pomo-controls { display:flex;gap:4px; }
.pomo-btn { width:28px;height:28px;border-radius:8px;background:var(--input-bg);border:1px solid var(--input-border);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--txt2);transition:var(--t); }
.pomo-btn:hover { background:rgba(79,142,247,0.1);color:var(--ba);border-color:rgba(79,142,247,0.3); }

/* ============================================================
   NOTES PANEL
   ============================================================ */
.notes-panel {
  position:fixed;right:0;top:66px;bottom:0;width:300px;
  background:var(--card);border-left:1px solid var(--divider);
  display:flex;flex-direction:column;z-index:150;
  transform:translateX(100%);transition:transform 0.35s var(--ease);
  box-shadow:-8px 0 32px rgba(0,0,0,0.2);
}
.notes-panel.open { transform:translateX(0); }
.notes-header { padding:14px 16px;border-bottom:1px solid var(--divider);display:flex;align-items:center;justify-content:space-between;flex-shrink:0; }
.notes-title { font-family:var(--font-serif);font-size:15px;font-weight:600;color:var(--txt); }
.notes-close { width:28px;height:28px;border-radius:8px;background:none;border:none;cursor:pointer;color:var(--txt2);font-size:16px;display:flex;align-items:center;justify-content:center;transition:var(--t); }
.notes-close:hover { background:var(--input-bg);color:var(--txt); }
.notes-textarea { flex:1;background:transparent;border:none;resize:none;padding:16px;color:var(--txt);font-size:14px;font-family:var(--font-sans);line-height:1.65;outline:none; }
.notes-textarea::placeholder { color:var(--txt3); }
.notes-footer { padding:10px 16px;border-top:1px solid var(--divider);display:flex;justify-content:space-between;align-items:center;flex-shrink:0; }
.notes-saved { font-size:11px;color:var(--txt3);font-family:var(--font-mono); }

/* ============================================================
   KEYBOARD SHORTCUT OVERLAY
   ============================================================ */
.shortcuts-overlay {
  position:fixed;inset:0;background:rgba(8,10,20,0.82);backdrop-filter:blur(16px);
  z-index:9500;display:flex;align-items:center;justify-content:center;padding:24px;
}
.shortcuts-overlay.hidden { display:none; }
.shortcuts-box {
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-xl);
  padding:32px;max-width:520px;width:100%;box-shadow:var(--shadow-lg);
  animation:modalIn 0.3s var(--ease-spring);
}
.shortcuts-title { font-family:var(--font-serif);font-size:22px;font-weight:700;margin-bottom:20px;color:var(--txt);display:flex;align-items:center;justify-content:space-between; }
.shortcuts-grid { display:grid;grid-template-columns:1fr 1fr;gap:8px; }
.shortcut-row { display:flex;align-items:center;justify-content:space-between;padding:8px 10px;border-radius:10px;background:var(--input-bg); }
.shortcut-desc { font-size:13px;color:var(--txt2); }

/* ============================================================
   MOBILE NAV
   ============================================================ */
.nav-hamburger { display:none;width:38px;height:38px;border-radius:10px;background:none;border:1px solid var(--card-border);cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px; }
.nav-hamburger span { display:block;width:18px;height:2px;background:var(--txt);border-radius:99px;transition:var(--t); }
.mobile-menu {
  position:fixed;inset:0;top:66px;background:var(--nav-bg);backdrop-filter:blur(28px);
  z-index:190;display:flex;flex-direction:column;padding:24px;gap:8px;
  transform:translateY(-100%);transition:transform 0.35s var(--ease);
}
.mobile-menu.open { transform:translateY(0); }
.mobile-menu-link { padding:14px 16px;border-radius:var(--radius);font-size:16px;font-weight:500;color:var(--txt);cursor:pointer;border:none;background:none;text-align:left;font-family:var(--font-sans);transition:var(--t);border:1px solid transparent; }
.mobile-menu-link:hover,.mobile-menu-link.active { background:rgba(79,142,247,0.08);border-color:rgba(79,142,247,0.2);color:var(--ba); }

/* ============================================================
   QUOTE OF THE DAY
   ============================================================ */
.qotd-banner {
  background:linear-gradient(135deg,rgba(139,92,246,0.08),rgba(79,142,247,0.06));
  border:1px solid rgba(139,92,246,0.2);border-radius:var(--radius-lg);
  padding:20px 24px;margin-bottom:24px;position:relative;overflow:hidden;
}
.qotd-banner::before { content:'"';position:absolute;top:-20px;left:12px;font-size:120px;font-family:var(--font-serif);color:rgba(139,92,246,0.08);line-height:1;pointer-events:none; }
.qotd-quote { font-family:var(--font-serif);font-size:16px;font-style:italic;color:var(--txt);line-height:1.6;margin-bottom:6px; }
.qotd-author { font-size:12px;color:var(--txt3);font-weight:600;text-transform:uppercase;letter-spacing:1px; }

/* ============================================================
   SESSION HISTORY MODAL
   ============================================================ */
.session-replay-msg { padding:10px 14px;border-radius:12px;font-size:13px;line-height:1.55;margin-bottom:8px; }
.session-replay-ai { background:rgba(139,92,246,0.08);border-left:3px solid var(--pa);color:var(--txt-ai);font-family:var(--font-serif); }
body.light-mode .session-replay-ai { color:#5B21B6; }
.session-replay-user { background:rgba(79,142,247,0.08);border-left:3px solid var(--ba);color:var(--txt); }

/* ============================================================
   RESPONSIVE (updated)
   ============================================================ */
@media (max-width: 960px) {
  .studio-layout { grid-template-columns:1fr;grid-template-rows:1fr 1fr; }
  .studio-panel-left { border-right:none;border-bottom:1px solid var(--divider); }
  .stats-strip { grid-template-columns:repeat(2,1fr); }
  .dash-grid { grid-template-columns:1fr; }
  .stats-row-4 { grid-template-columns:repeat(2,1fr); }
  .steps-grid { grid-template-columns:1fr; }
  .steps-grid::before { display:none; }
  .features-grid { grid-template-columns:1fr; }
  .nav-links { display:none; }
  .nav-hamburger { display:flex; }
  .notes-panel { width:100%; }
}
@media (max-width: 600px) {
  .onboard-card { padding:24px 18px; }
  .hero-title { font-size:36px; }
  .hero-actions { flex-direction:column;align-items:stretch; }
  .stats-row-4 { grid-template-columns:1fr 1fr; }
  .library-grid { grid-template-columns:1fr 1fr; }
  .fc-card-front,.fc-card-back { padding:28px 20px; }
  .fc-card-question { font-size:18px; }
  .fc-rate-btn { min-width:64px;padding:10px 12px; }
  .shortcuts-grid { grid-template-columns:1fr; }
}

body.dyslexia * { font-family: 'OpenDyslexic', var(--font-sans) !important; }
body.font-sm { font-size: 14px; }
body.font-lg { font-size: 18px; }
body.font-xl { font-size: 20px; }
body.high-contrast { --txt:#FFFFFF;--txt2:#DDDDDD;--txt3:#AAAAAA;--card-border:rgba(255,255,255,0.2); }
body.high-contrast.light-mode { --txt:#000000;--txt2:#222222;--txt3:#444444; }