/* Beile.info — shared design system */

:root {
  --bg: #f7f7fb;
  --bg-elevated: #ffffff;
  --text: #14141c;
  --text-muted: #55566b;
  --border: #e4e4ee;
  --accent: #6d5bff;
  --accent-2: #00d1b2;
  --accent-grad: linear-gradient(135deg, #6d5bff 0%, #00b8d9 100%);
  --shadow: 0 8px 30px rgba(20, 20, 28, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e14;
    --bg-elevated: #17171f;
    --text: #eeeef4;
    --text-muted: #b4b4c8;
    --border: #26262f;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
  }
}

:root[data-theme="dark"] {
  --bg: #0e0e14;
  --bg-elevated: #17171f;
  --text: #eeeef4;
  --text-muted: #9d9db0;
  --border: #26262f;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}

:root[data-theme="light"] {
  --bg: #f7f7fb;
  --bg-elevated: #ffffff;
  --text: #14141c;
  --text-muted: #55566b;
  --border: #e4e4ee;
  --shadow: 0 8px 30px rgba(20, 20, 28, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  /* Safety net: something (native date/time inputs refusing to shrink below
     their intrinsic width in a cramped mobile layout, an unwrapped flex
     row, etc.) can always end up a few pixels wider than the viewport.
     Rather than chase every possible offender, guarantee vertical-only
     scrolling site-wide — horizontal scroll is never an intended behavior
     here. */
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  transition: background-color 0.25s ease, color 0.25s ease;
}

a { color: inherit; text-decoration: none; }

/* Several components below (e.g. .btn, .modal-backdrop) set `display`
   unconditionally. Author-origin rules beat the UA stylesheet's
   `[hidden] { display: none }` at equal specificity, so any such element
   stayed visible even with the `hidden` attribute set — this was the root
   cause of dialogs/buttons appearing to "never go away". This single rule
   restores correct hidden behavior everywhere, for good. */
[hidden] { display: none !important; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: 1120px;
  margin: 0 auto;
}

.brand {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a, .theme-toggle {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: background-color 0.2s ease, color 0.2s ease;
  cursor: pointer;
  border: none;
  background: none;
}

.nav-links a:hover, .theme-toggle:hover {
  background: var(--border);
  color: var(--text);
}
.nav-links a.active { color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); }

.accent-picker-btn {
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border) !important;
  background: var(--bg-elevated) !important;
}
.accent-picker-btn span { font-weight: 700; }

.nav-toggle-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 1.1rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

@media (max-width: 720px) {
  .nav-toggle-btn { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 10px 16px 16px;
    z-index: 80;
  }
  .nav-links.mobile-open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a, .nav-links .theme-toggle {
    display: block;
    width: 100%;
    text-align: left;
    padding: 12px 14px;
    font-size: 1rem;
  }
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.btn-primary {
  background: var(--accent-grad);
  border: none;
  color: white;
}

.fade-up {
  animation: fadeUp 0.6s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.grid {
  display: grid;
  gap: 20px;
}

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer-links {
  display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; margin-bottom: 10px;
}
.footer-links a { color: var(--text-muted); font-weight: 600; font-size: 0.85rem; }
.footer-links a:hover { color: var(--accent); }
.footer-tagline { margin: 0; }