/* ===== VARIABLES & THEMES ===== */
:root {
  /* Dark Theme (Default) */
  --bg: #0b0c10;
  --surface: rgba(22, 24, 32, 0.7);
  --surface-alt: rgba(30, 34, 46, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  
  --text: #f0f2f5;
  --text-dim: #9aa0a6;
  
  --accent: #5e6ad2;
  --accent-glow: #8794ff;
  --accent-hover: #4b55b2;
  
  --green-1: #2ecc71;
  --green-2: #229954;
  --green-3: #114d2a;
  --red: #e74c3c;
  --black: #000;
  
  --radius-card: 20px;
  --radius-btn: 12px;
  --radius-circle: 50%;
  
  --font: 'Outfit', system-ui, -apple-system, sans-serif;
  --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

[data-theme="light"] {
  --bg: #f5f7fa;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-alt: rgba(240, 242, 245, 0.6);
  --glass-border: rgba(0, 0, 0, 0.05);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
  
  --text: #1a1c23;
  --text-dim: #5f6368;
  
  --accent: #5e6ad2;
  --accent-glow: #7380f3;
  --accent-hover: #4b55b2;
  
  --black: #ffffff; /* Reversed for light theme dots */
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s, color 0.4s;
}

/* ===== BACKGROUND BLUR/GRADIENTS (Glassmorphism) ===== */
body::before, body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  opacity: 0.4;
  pointer-events: none;
}
body::before {
  top: -10%; left: -10%;
  width: 40vw; height: 40vw;
  background: var(--accent);
}
[data-theme="light"] body::before { opacity: 0.15; }

/* ===== UTILITIES ===== */
.glass {
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}
.hidden { display: none !important; }
.w-full { width: 100%; }
.mt-auto { margin-top: auto; }
.mb-4 { margin-bottom: 16px; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-family: inherit; font-size: 0.95rem; font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, border 0.2s, box-shadow 0.2s;
  border: none;
}
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(94, 106, 210, 0.4);
}
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 6px 20px rgba(94, 106, 210, 0.5); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--text-dim);
}
.btn-outline:hover { background: var(--surface-alt); border-color: var(--text); }
.btn-danger {
  background: transparent; color: var(--red);
  border: 1px solid rgba(231,76,60,0.5);
}
.btn-danger:hover { background: rgba(231,76,60,0.1); border-color: var(--red); }

/* ===== HEADER ===== */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--surface); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  transition: background 0.4s, border-color 0.4s;
}
.header h1 {
  font-size: 1.25rem; font-weight: 800; letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent-glow), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.header-stats {
  font-size: 0.85rem; font-weight: 600; color: var(--text-dim);
  background: var(--surface-alt); padding: 4px 12px; border-radius: 20px;
}
.header-controls { display: flex; align-items: center; gap: 20px; }

/* Theme Toggle Button */
.theme-btn {
  background: none; border: none; color: var(--text); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%;
  transition: background 0.2s, color 0.2s;
}
.theme-btn:hover { background: var(--surface-alt); color: var(--accent); }
.theme-btn svg { width: 20px; height: 20px; }

/* Toggle Switch (2nd Chance) */
.toggle-wrap { display: flex; align-items: center; gap: 8px; font-size: 0.8rem; font-weight: 500; color: var(--text-dim); }
.toggle { position: relative; width: 44px; height: 24px; cursor: pointer; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle .slider {
  position: absolute; inset: 0; background: rgba(128,128,128,0.3); border-radius: 12px;
  transition: var(--transition);
}
.toggle .slider::before {
  content: ''; position: absolute; width: 18px; height: 18px;
  left: 3px; bottom: 3px; background: #fff; border-radius: 50%;
  transition: var(--transition); box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.toggle input:checked + .slider { background: var(--accent); }
.toggle input:checked + .slider::before { transform: translateX(20px); }

/* ===== HOME / LAUNCH AREA ===== */
.launch-area {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 40px 20px; max-width: 900px; margin: 0 auto; width: 100%;
}
.hero { text-align: center; margin-bottom: 48px; }
.hero h2 { font-size: 2.8rem; font-weight: 800; line-height: 1.1; margin-bottom: 12px; letter-spacing: -1px; }
.hero p { font-size: 1.1rem; color: var(--text-dim); font-weight: 400; }
.gradient-text {
  background: linear-gradient(135deg, var(--accent-glow), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* SAVED QUIZZES DASHBOARD */
.dashboard { width: 100%; margin-bottom: 48px; border-top: 1px solid var(--glass-border); padding-top: 32px; }
.dash-header { margin-bottom: 20px; display: flex; align-items: center; justify-content: space-between; }
.dash-header h3 { font-size: 1.4rem; font-weight: 700; color: var(--text); }
.dash-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px;
}
.dash-card {
  background: var(--surface); border: 1px solid var(--glass-border);
  border-radius: var(--radius-card); padding: 20px;
  display: flex; flex-direction: column; gap: 12px;
  backdrop-filter: blur(10px); transition: transform 0.2s, border-color 0.2s;
}
.dash-card:hover { transform: translateY(-3px); border-color: rgba(94, 106, 210, 0.4); }
.dash-card h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;}
.dash-meta { font-size: 0.8rem; color: var(--text-dim); display:flex; justify-content: space-between;}
.dash-progress-track { height: 6px; background: rgba(128,128,128,0.2); border-radius: 4px; overflow: hidden; margin-bottom: 8px;}
.dash-progress-fill { height: 100%; background: var(--green-1); border-radius: 4px; transition: width 0.3s;}
.dash-actions { display: grid; gap: 8px; flex-wrap: wrap; margin-top: auto;}
.dash-actions-row { display: flex; gap: 8px; }
.dash-actions-row .btn { flex: 1; padding: 8px 12px; font-size: 0.8rem; }

.launch-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; width: 100%;
}
.launch-card {
  background: var(--surface); border: 1px solid var(--glass-border);
  border-radius: var(--radius-card); padding: 32px;
  display: flex; flex-direction: column; gap: 16px;
  backdrop-filter: blur(16px); box-shadow: var(--glass-shadow);
  transition: transform 0.3s, border-color 0.3s;
}
.launch-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.launch-card .icon-wrap {
  width: 54px; height: 54px; border-radius: 16px;
  background: rgba(94, 106, 210, 0.1); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 8px;
}
.launch-card.gcf-card .icon-wrap { background: rgba(46, 204, 113, 0.1); color: var(--green-1); }
.launch-card h3 { font-size: 1.4rem; font-weight: 700; }
.launch-card p { color: var(--text-dim); font-size: 0.95rem; line-height: 1.5; flex: 1; }
.card-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: auto; }

/* ===== QUIZ CONTAINER ===== */
.quiz-container { max-width: 680px; margin: 40px auto; padding: 0 16px 100px; width: 100%; }
.quiz-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--glass-border);
}

/* SCORE BANNER */
.score-banner {
  text-align: center; padding: 24px;
  background: var(--surface); border: 1px solid var(--glass-border);
  border-radius: var(--radius-card); margin-bottom: 32px;
  backdrop-filter: blur(10px);
}
.score-banner .big { font-size: 2.8rem; font-weight: 800; color: var(--accent-glow); line-height: 1; }
.score-banner .sub { font-size: 0.9rem; font-weight: 500; color: var(--text-dim); margin-top: 8px; text-transform: uppercase; letter-spacing: 1px;}

/* QUESTION CARD */
.q-card {
  background: var(--surface); border-radius: var(--radius-card);
  padding: 32px 28px; margin-bottom: 24px;
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  transition: border-color var(--transition);
}
.q-card:hover { border-color: rgba(94, 106, 210, 0.3); }
.q-num {
  display: inline-block; font-size: 0.75rem; font-weight: 700;
  color: var(--accent); background: rgba(94, 106, 210, 0.1);
  padding: 4px 12px; border-radius: 20px; margin-bottom: 16px;
  letter-spacing: 0.5px; text-transform: uppercase;
}
.q-text { font-size: 1.15rem; font-weight: 600; margin-bottom: 24px; line-height: 1.5; color: var(--text); }

/* OPTION BUTTONS */
.options { display: flex; flex-direction: column; gap: 12px; }
.opt-btn {
  width: 100%; text-align: left; border: 2px solid transparent;
  background: var(--surface-alt); color: var(--text);
  padding: 16px 20px; border-radius: var(--radius-btn);
  font-size: 1rem; cursor: pointer; transition: all 0.2s ease;
  display: flex; align-items: center; gap: 16px; font-weight: 500;
  font-family: inherit;
}
.opt-btn:hover:not(.correct):not(.wrong):not(.disabled) {
  border-color: var(--accent); background: rgba(94, 106, 210, 0.05); transform: translateX(4px);
}
.opt-btn .opt-letter {
  min-width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-circle); background: var(--surface); border: 1px solid var(--glass-border);
  font-weight: 700; font-size: 0.85rem; flex-shrink: 0; transition: var(--transition); color: var(--text-dim);
}
.opt-btn.correct { border-color: var(--green-1); background: rgba(46,204,113,0.1); }
.opt-btn.correct .opt-letter { background: var(--green-1); color: #fff; border-color: var(--green-1); }
.opt-btn.wrong { border-color: var(--red); background: rgba(231,76,60,0.1); }
.opt-btn.wrong .opt-letter { background: var(--red); color: #fff; border-color: var(--red); }
.opt-btn.disabled { opacity: 0.5; pointer-events: none; }
.tries-badge {
  margin-left: auto; font-size: 0.75rem; font-weight: 600; color: var(--text-dim);
  background: var(--surface); border: 1px solid var(--glass-border);
  padding: 4px 10px; border-radius: 12px; display: none;
}
.q-card.solved .tries-badge { display: block; }

/* ===== MODALS ===== */
.modal {
  position: fixed; inset: 0; z-index: 400;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
  padding: 20px;
}
.modal.open { opacity: 1; pointer-events: auto; }
.modal-content {
  width: 100%; max-width: 600px; border-radius: var(--radius-card);
  display: flex; flex-direction: column;
  transform: translateY(20px); transition: transform 0.3s;
  max-height: 90vh;
}
.modal.open .modal-content { transform: translateY(0); }
.modal-header {
  padding: 20px 24px; border-bottom: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-header h3 { font-size: 1.2rem; font-weight: 700; }
.close-modal { background: none; border: none; font-size: 1.8rem; color: var(--text-dim); cursor: pointer; line-height: 1; }
.close-modal:hover { color: var(--text); }
.modal-body { padding: 24px; overflow-y: auto; }
.modal-body input {
  width: 100%; background: var(--surface-alt); border: 1px solid var(--glass-border);
  color: var(--text); border-radius: var(--radius-btn); padding: 12px 16px;
  font-family: inherit; font-size: 1rem; outline: none; transition: border-color 0.2s; font-weight: 500;
}
.modal-body textarea {
  width: 100%; background: var(--surface-alt); border: 1px solid var(--glass-border);
  color: var(--text); border-radius: var(--radius-btn); padding: 16px;
  font-family: monospace; font-size: 0.9rem; resize: vertical; outline: none; transition: border-color 0.2s;
}
.modal-body input:focus, .modal-body textarea:focus { border-color: var(--accent); }
.modal-footer {
  padding: 20px 24px; border-top: 1px solid var(--glass-border);
  display: flex; justify-content: flex-end; gap: 12px;
}

/* AI Prompt Box */
.prompt-modal .prompt-box {
  background: var(--surface-alt); border: 1px solid var(--glass-border);
  border-radius: var(--radius-btn); padding: 16px; margin-top: 16px;
  position: relative;
}
.prompt-box code { font-family: monospace; font-size: 0.85rem; color: var(--accent-glow); white-space: pre-wrap; word-wrap: break-word; }

/* ===== FLOATING MAP BUTTON ===== */
.fab {
  position: fixed; bottom: 32px; right: 32px; z-index: 200;
  width: 60px; height: 60px; border-radius: var(--radius-circle);
  background: linear-gradient(135deg, var(--accent), var(--accent-glow));
  border: none; color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 32px rgba(94, 106, 210, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
}
.fab:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(94, 106, 210, 0.5); }
.fab svg { width: 24px; height: 24px; }

/* ===== SIDEBAR DRAWER ===== */
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  z-index: 300; opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.overlay.open { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 310;
  width: 340px; max-width: 85vw; background: var(--surface);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  transform: translateX(100%); transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  display: flex; flex-direction: column;
  border-left: 1px solid var(--glass-border); box-shadow: -10px 0 40px rgba(0,0,0,0.2);
}
.drawer.open { transform: translateX(0); }
.drawer-header {
  padding: 24px; display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--glass-border);
}
.drawer-header h2 { font-size: 1.1rem; font-weight: 700; }
.drawer-grid {
  padding: 24px; overflow-y: auto; flex: 1;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr));
  gap: 12px; align-content: start;
}
.map-circle {
  width: 44px; height: 44px; border-radius: var(--radius-circle);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 700; cursor: pointer;
  border: 2px solid var(--glass-border); background: var(--surface-alt);
  color: var(--text); transition: all 0.2s;
}
.map-circle:hover { border-color: var(--accent); transform: scale(1.1); }
.map-circle.t1 { background: var(--green-1); color: #fff; border-color: var(--green-1); }
.map-circle.t2 { background: var(--green-2); color: #fff; border-color: var(--green-2); }
.map-circle.t3 { background: var(--green-3); color: #fff; border-color: var(--green-3); }
[data-theme="light"] .map-circle.t3 { background: var(--green-3); color: #fff; }
.map-circle.t4 { background: var(--red); color: #fff; border-color: var(--red); }

.drawer-legend {
  padding: 16px 24px; border-top: 1px solid var(--glass-border);
  display: flex; flex-wrap: wrap; gap: 12px; font-size: 0.75rem; font-weight: 500; color: var(--text-dim); background: var(--surface-alt);
}
.legend-item { display: flex; align-items: center; gap: 6px; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; box-shadow: inset 0 0 2px rgba(0,0,0,0.2); }

/* ===== PROGRESS BAR ===== */
.progress-wrap {
  position: fixed; top: 0; left: 0; right: 0; z-index: 110; height: 3px;
  background: transparent;
}
.progress-bar {
  height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent-glow));
  transition: width 0.4s ease-out; box-shadow: 0 0 10px var(--accent);
}

/* ===== FOOTER ===== */
.footer {
  text-align: center; padding: 24px; font-size: 0.85rem; color: var(--text-dim);
  margin-top: auto; font-weight: 500;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .header { padding: 12px 16px; }
  .header h1 { font-size: 1.1rem; }
  .header-controls { gap: 12px; }
  .toggle-wrap span { display: none; }
  .hero h2 { font-size: 2.2rem; }
  .card-actions { grid-template-columns: 1fr; }
  .drawer { width: 100vw; max-width: 100vw; }
  .q-card { padding: 24px 20px; }
  .modal-content { width: 95%; margin: 10px; }
  .modal-footer { flex-direction: column; }
  .modal-footer .btn { width: 100%; }
}