/* Sınavgo Web — design system tokens (screens/design_system.md). */

:root {
  /* Light theme */
  --primary: #FF7A1A;
  --primary-pressed: #E0660C;
  --secondary: #12B5A5;
  --success: #2FBF71;
  --error: #FF4B4B;
  --xp-gold: #FFC83D;
  --streak-flame: #FF6A00;
  --info: #3B82F6;
  --bg: #FFFFFF;
  --bg-warm: #FFF8F0;
  --surface: #FFFFFF;
  --border: #E8E1D8;
  --ink: #1E1B16;
  --ink-muted: #7A736A;
  --locked: #C9C2B8;

  /* Shape & spacing (4pt grid) */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-12: 48px;
  --radius-card: 24px;
  --radius-btn: 16px;
  --shadow-soft: 0 10px 30px rgba(30, 27, 22, 0.08);

  --font-display: 'Fredoka', system-ui, sans-serif;
  --font-body: 'Nunito', system-ui, sans-serif;
  --maxw: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #FF8C3B;
    --primary-pressed: #D9701F;
    --secondary: #23C9B8;
    --success: #3FD17F;
    --error: #FF6161;
    --xp-gold: #FFD25E;
    --streak-flame: #FF7E2E;
    --bg: #14110D;
    --bg-warm: #1E1A14;
    --surface: #241F18;
    --border: #3A332A;
    --ink: #F5F0E8;
    --ink-muted: #A89F92;
    --locked: #5A5247;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
  margin: 0 0 var(--sp-4);
}

h1 { font-size: clamp(32px, 5vw, 56px); }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: 20px; }

p { margin: 0 0 var(--sp-4); color: var(--ink); }

a { color: var(--secondary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

.muted { color: var(--ink-muted); }

/* ---- Header / nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--ink);
}
.brand img { width: 34px; height: 34px; }
.nav-links { display: flex; align-items: center; gap: var(--sp-6); }
.nav-links a { color: var(--ink-muted); font-weight: 700; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }

/* ---- 3D chunky button ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.02em;
  padding: 14px 26px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.06s ease, box-shadow 0.06s ease;
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 0 var(--primary-pressed);
}
.btn-primary:hover { text-decoration: none; }
.btn-primary:active {
  transform: translateY(4px);
  box-shadow: 0 0 0 var(--primary-pressed);
}
.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border: 2px solid var(--border);
}
.btn-ghost { background: transparent; color: var(--secondary); }

/* ---- Hero ---- */
.hero {
  background: var(--bg-warm);
  padding: var(--sp-12) 0;
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--sp-8);
  align-items: center;
}
.hero h1 { margin-bottom: var(--sp-3); }
.hero .lead { font-size: 19px; color: var(--ink-muted); margin-bottom: var(--sp-6); }
.hero-cta { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.hero-art {
  display: flex;
  justify-content: center;
}
.hero-art img {
  width: min(360px, 80%);
  filter: drop-shadow(0 18px 30px rgba(255, 122, 26, 0.25));
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: var(--sp-4);
}

/* ---- Sections ---- */
.section { padding: var(--sp-12) 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto var(--sp-8); }
.section-head p { color: var(--ink-muted); font-size: 18px; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--sp-6);
}
.card .emoji { font-size: 30px; }
.card-mascot { text-align: center; }
.card-mascot-img {
  width: 88px;
  height: 88px;
  object-fit: contain;
  margin: 0 auto var(--sp-3);
  filter: drop-shadow(0 8px 16px rgba(255, 122, 26, 0.18));
}
.card h3 { margin: var(--sp-3) 0 var(--sp-2); }
.card p { color: var(--ink-muted); margin: 0; font-size: 15px; }

/* ---- Exam chips ---- */
.chips { display: flex; flex-wrap: wrap; gap: var(--sp-3); justify-content: center; }
.chip {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 999px;
  padding: 10px 20px;
  font-weight: 800;
  color: var(--ink);
}

/* ---- CTA band ---- */
.cta-band {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-card);
  padding: var(--sp-12) var(--sp-8);
  text-align: center;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255, 255, 255, 0.9); }
.cta-band .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.15);
}
.cta-band-mascot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  text-align: left;
}
.cta-mascot {
  width: min(180px, 28vw);
  flex-shrink: 0;
  filter: drop-shadow(0 16px 28px rgba(0, 0, 0, 0.18));
}

/* ---- Footer ---- */
.site-footer {
  background: var(--bg-warm);
  border-top: 1px solid var(--border);
  padding: var(--sp-8) 0;
  margin-top: var(--sp-12);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-6);
  justify-content: space-between;
  align-items: center;
}
.footer-links { display: flex; flex-wrap: wrap; gap: var(--sp-6); }
.footer-links a { color: var(--ink-muted); font-weight: 700; }
.copyright { color: var(--ink-muted); font-size: 14px; }

/* ---- Legal / document pages ---- */
.doc {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--sp-12) 20px;
}
.doc .updated {
  color: var(--ink-muted);
  font-size: 14px;
  margin-bottom: var(--sp-8);
}
.doc h2 { margin-top: var(--sp-8); font-size: 24px; }
.doc h3 { margin-top: var(--sp-6); }
.doc ul { padding-left: 22px; }
.doc li { margin-bottom: var(--sp-2); }
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-weight: 800;
  margin-bottom: var(--sp-6);
}

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-art { order: -1; }
  .hero-cta { justify-content: center; }
  .cards { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .cta-band-mascot { flex-direction: column; text-align: center; }
}