/* ==========================================================
   财神游戏汇 · /assets/site.css
   全站共享层：变量、Reset、排版、头尾、通用组件
   ========================================================== */

/* ---------- 0. CSS Variables ---------- */
:root {
  --color-red: #C8102E;
  --color-red-dark: #9E0C24;
  --color-gold: #D4AF37;
  --color-gold-light: #E8C86A;
  --color-gold-pale: #F5E7B8;
  --color-gold-dark: #8A6A12;
  --color-blue: #1E88E5;
  --color-green: #43A047;
  --color-yellow: #FDD835;
  --color-brown: #7B2D26;
  --color-paper: #F8F5EF;
  --color-paper-deep: #EFE7D9;
  --color-ink: #2E2C2A;
  --font-display: "Ma Shan Zheng", "Kaiti SC", "STKaiti", "KaiTi", "SimSun", serif;
  --font-heading: "ZCOOL KuaiLe", "PingFang SC", "Microsoft YaHei", "SimHei", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", "Courier New", monospace;
  --content-max: 1440px;
  --header-h: 80px;
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 2px 10px rgba(46, 44, 42, 0.06);
  --shadow-raised: 0 8px 28px rgba(46, 44, 42, 0.14);
  --transition-fast: 0.2s ease;
  --transition: 0.3s ease;
  --space-1: 6px;
  --space-2: 12px;
  --space-3: 24px;
  --space-4: 48px;
  --space-5: 80px;
}

/* ---------- 1. Reset / Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }
a { color: var(--color-blue); text-decoration: underline; text-underline-offset: 3px; }
a:hover { text-decoration: none; }
button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }

:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 2. Accessibility Utilities ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 9999;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
  color: var(--color-ink);
  padding: 10px 20px;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  box-shadow: var(--shadow-raised);
  transition: top 0.25s ease;
}
.skip-link:focus-visible { top: 0; }

/* ---------- 3. Main Content Shell ---------- */
.main-content, .page-main { display: block; flex: 1 0 auto; }
#main-content { scroll-margin-top: calc(var(--header-h) + 24px); }

.site-container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* ---------- 4. Scroll Progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-yellow) 50%, var(--color-gold) 100%);
  box-shadow: 0 0 6px rgba(212, 175, 55, 0.6);
  z-index: 999;
  pointer-events: none;
}

/* ---------- 5. Header / Masthead ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, #D21330 0%, var(--color-red-dark) 100%);
  border-bottom: 2px solid var(--color-gold);
  box-shadow: 0 4px 18px rgba(46, 44, 42, 0.18);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 8% 120%, rgba(212, 175, 55, 0.2) 0%, transparent 45%),
    radial-gradient(circle at 88% -40%, rgba(253, 216, 53, 0.14) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

.header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-3);
  min-height: var(--header-h);
}

/* Brand */
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-pale) 100%);
  color: var(--color-red);
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.28), inset 0 0 0 2px rgba(255, 255, 255, 0.35);
  transform: rotate(-3deg);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.25;
  color: #FFFFFF;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}

/* Navigation */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}

.nav-item {
  list-style: none;
}

.nav-link {
  display: inline-block;
  padding: 8px 15px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.92);
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition:
    color var(--transition-fast),
    background var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-yellow);
  background: rgba(212, 175, 55, 0.12);
  border-color: rgba(212, 175, 55, 0.45);
  box-shadow: 0 0 14px rgba(212, 175, 55, 0.3);
  text-decoration: none;
  outline: none;
}

.nav-link[aria-current="page"] {
  color: var(--color-yellow);
  background: rgba(212, 175, 55, 0.16);
  border-color: rgba(212, 175, 55, 0.55);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.2);
}

/* Nav Toggle (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 46px;
  height: 46px;
  gap: 5px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--color-gold);
  background: rgba(212, 175, 55, 0.15);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.3);
  outline: none;
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 1px;
  background: #FFFFFF;
  transition: transform 0.3s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Flag Streamer */
.flag-streamer {
  display: flex;
  height: 6px;
}

.flag-strip {
  flex: 1 1 0;
  min-width: 0;
  height: 6px;
}

.flag-blue { background: var(--color-blue); }
.flag-white { background: #FFFFFF; }
.flag-red { background: var(--color-red); }
.flag-green { background: var(--color-green); }
.flag-yellow { background: var(--color-yellow); }

/* ---------- 6. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: auto;
  background: linear-gradient(180deg, var(--color-brown) 0%, #5B1F1B 100%);
  color: #E3C990;
  font-size: 0.9375rem;
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg,
    var(--color-blue) 0%, var(--color-blue) 20%,
    #FFFFFF 20%, #FFFFFF 40%,
    var(--color-red) 40%, var(--color-red) 60%,
    var(--color-green) 60%, var(--color-green) 80%,
    var(--color-yellow) 80%, var(--color-yellow) 100%);
}

.footer-top {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 52px var(--space-3) 40px;
  display: grid;
  grid-template-columns: 1.8fr 1.2fr 1.2fr 1fr;
  gap: 40px;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-gold-light);
  line-height: 1.3;
  margin-bottom: 6px;
}

.footer-tagline {
  font-size: 0.875rem;
  color: rgba(227, 201, 144, 0.75);
  margin-bottom: 16px;
}

.footer-trust {
  background: rgba(253, 216, 53, 0.07);
  border-left: 3px solid var(--color-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 14px;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: rgba(227, 201, 144, 0.85);
}

.footer-col {
  min-width: 0;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-gold-light);
  margin-bottom: 14px;
  padding-bottom: 8px;
  position: relative;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  border-radius: 1px;
  background: var(--color-gold);
}

.footer-line {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(227, 201, 144, 0.88);
  margin-bottom: 5px;
  word-break: break-word;
}

.footer-link-list li {
  margin-bottom: 5px;
}

.footer-link {
  color: #D1B57C;
  text-decoration: none;
  font-size: 0.875rem;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--color-yellow);
  border-bottom-color: var(--color-gold);
}

.footer-link[aria-current="page"] {
  color: var(--color-yellow);
  border-bottom-color: var(--color-gold);
}

.footer-bottom {
  border-top: 1px solid rgba(212, 175, 55, 0.25);
  background: rgba(0, 0, 0, 0.15);
}

.footer-copy {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 14px var(--space-3);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: rgba(227, 201, 144, 0.72);
}

/* ---------- 7. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  cursor: pointer;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition),
    transform var(--transition-fast);
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--color-red) 0%, var(--color-red-dark) 100%);
  color: #FFFFFF;
  border-color: var(--color-gold);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: linear-gradient(135deg, #D81432 0%, var(--color-red) 100%);
  box-shadow: 0 0 18px rgba(212, 175, 55, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--color-red);
  border-color: var(--color-red);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background: rgba(200, 16, 46, 0.06);
  box-shadow: 0 0 12px rgba(200, 16, 46, 0.15);
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
  color: var(--color-ink);
  border-color: var(--color-gold-dark);
}

.btn-gold:hover,
.btn-gold:focus-visible {
  box-shadow: 0 0 18px rgba(212, 175, 55, 0.5);
  transform: translateY(-1px);
}

/* ---------- 8. Tags / Badges ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.tag-blue {
  background: rgba(30, 136, 229, 0.12);
  color: var(--color-blue);
}

.tag-green {
  background: rgba(67, 160, 71, 0.12);
  color: var(--color-green);
}

.tag-red {
  background: rgba(200, 16, 46, 0.12);
  color: var(--color-red);
}

.tag-gold {
  background: rgba(212, 175, 55, 0.15);
  color: var(--color-gold-dark);
}

/* ---------- 9. Cards ---------- */
.card {
  background: #FFFFFF;
  border: 1px solid rgba(46, 44, 42, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  box-shadow: var(--shadow-card);
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition-fast);
}

.card:hover {
  border-color: rgba(212, 175, 55, 0.55);
  box-shadow: var(--shadow-raised);
}

/* ---------- 10. Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  color: rgba(46, 44, 42, 0.6);
  padding: 12px 0;
  margin-bottom: var(--space-3);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.breadcrumb-item a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-item a:hover { text-decoration: underline; }

.breadcrumb-sep { color: rgba(46, 44, 42, 0.35); }

.breadcrumb-item[aria-current="page"] {
  color: var(--color-red);
  font-weight: 500;
}

/* ---------- 11. Grid ---------- */
.grid {
  display: grid;
  gap: var(--space-3);
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 12. Media / Image Placeholder ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--color-paper-deep);
  border-radius: var(--radius-md);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-ratio-16x9 { aspect-ratio: 16 / 9; }
.media-ratio-4x3 { aspect-ratio: 4 / 3; }
.media-ratio-3x2 { aspect-ratio: 3 / 2; }
.media-ratio-square { aspect-ratio: 1 / 1; }

.media-figure { margin: 0; }

.media-caption {
  padding: 8px 4px 0;
  font-size: 0.8125rem;
  color: rgba(46, 44, 42, 0.6);
  text-align: center;
}

/* ---------- 13. Typography Helpers ---------- */
.section-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

.section-subtitle {
  font-size: 0.9375rem;
  color: rgba(46, 44, 42, 0.6);
  margin-top: -0.75em;
  margin-bottom: var(--space-3);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 0.875em;
  letter-spacing: 0.02em;
}

/* ---------- 14. Responsive ---------- */
@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex: none;
    z-index: 10;
    background: var(--color-red-dark);
    border-bottom: 2px solid var(--color-gold);
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    transition:
      max-height 0.35s ease,
      opacity 0.25s ease,
      visibility 0s linear 0.35s;
  }

  .site-nav[data-open] {
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    visibility: visible;
    opacity: 1;
    transition:
      max-height 0.35s ease,
      opacity 0.25s ease,
      visibility 0s;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px var(--space-3) 20px;
  }

  .nav-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-item:last-child { border-bottom: none; }

  .nav-link {
    display: block;
    padding: 13px 16px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font-size: 1rem;
    white-space: normal;
  }

  .nav-link:hover,
  .nav-link:focus-visible,
  .nav-link[aria-current="page"] {
    border-color: rgba(212, 175, 55, 0.4);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 44px var(--space-3) 36px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-h: 68px;
  }

  .header-inner {
    min-height: var(--header-h);
    padding: 0 16px;
  }

  .brand-name {
    font-size: 1.45rem;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 1.5rem;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 16px 32px;
  }

  .footer-copy {
    padding: 14px 16px;
    font-size: 0.75rem;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .site-container {
    padding: 0 16px;
  }

  .section-title {
    font-size: 1.5rem;
  }
}

/* ---------- 15. Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }

  .skip-link {
    transition: none;
  }
}