/* ============================================================
   AI Interview Coach — style.css
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg:         #000000;
  --bg-card:    #111111;
  --bg-card-2:  #1a1a1a;
  --border:     rgba(255,255,255,0.1);

  --blue:       #3b82f6;
  --blue-hover: #2563eb;
  --blue-glow:  rgba(59,130,246,0.15);

  --text-primary:   #ffffff;
  --text-secondary: #9ca3af;
  --text-muted:     #4b5563;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius:    10px;
  --radius-lg: 16px;
}

*, *::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-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Navbar ─────────────────────────────────────────────── */
.navbar {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
}

.navbar__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar__logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar__badge {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg-card);
  letter-spacing: 0.05em;
}

/* ── Container ──────────────────────────────────────────── */
.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--wide {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 24px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.18s ease;
  text-decoration: none;
}

.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-hover); text-decoration: none; }

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn--outline:hover { border-color: var(--blue); color: var(--blue); text-decoration: none; }

.btn--full { width: 100%; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Badge / format pill ────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: transparent;
}

.badge--blue  { color: var(--blue);  border-color: rgba(59,130,246,0.3);  background: var(--blue-glow); }
.badge--green { color: #34d399; border-color: rgba(52,211,153,0.3);   background: rgba(52,211,153,0.08); }
.badge--red   { color: #f87171; border-color: rgba(248,113,113,0.3);  background: rgba(248,113,113,0.08); }
.badge--amber { color: #fbbf24; border-color: rgba(251,191,36,0.3);   background: rgba(251,191,36,0.08); }
.badge--muted { color: var(--text-secondary); border-color: var(--border); background: transparent; }

/* ── Card ───────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

/* ── Stat Box ───────────────────────────────────────────── */
.stat-box {
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.stat-box__label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.stat-box__value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.stat-box__sub {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ── Divider ────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 24px 0; }

/* ── Spinner ────────────────────────────────────────────── */
.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Fade up ────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up    { animation: fadeUp 0.4s ease both; }
.fade-up--1 { animation-delay: 0.06s; }
.fade-up--2 { animation-delay: 0.12s; }
.fade-up--3 { animation-delay: 0.18s; }
.fade-up--4 { animation-delay: 0.24s; }

/* ── Alert ──────────────────────────────────────────────── */
.alert {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 16px; border-radius: var(--radius); font-size: 0.85rem;
}
.alert--error   { background: rgba(248,113,113,0.08); border: 1px solid rgba(248,113,113,0.2); color: #f87171; }
.alert--success { background: rgba(52,211,153,0.08);  border: 1px solid rgba(52,211,153,0.2);  color: #34d399; }

/* ── Prose ──────────────────────────────────────────────── */
.prose h2 { font-size: 0.95rem; font-weight: 600; color: var(--blue); margin: 18px 0 6px; }
.prose h3 { font-size: 0.88rem; font-weight: 600; margin: 12px 0 4px; }
.prose p  { font-size: 0.87rem; color: var(--text-secondary); margin-bottom: 8px; line-height: 1.65; }
.prose ul, .prose ol { padding-left: 18px; margin-bottom: 8px; }
.prose li { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 3px; }
.prose strong { color: var(--text-primary); font-weight: 500; }

/* ── Footer ─────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 48px;
}

@media (max-width: 640px) {
  .card { padding: 20px; }
}