/* ==========================================================================
   爱游戏体育 / Site Shared CSS
   文件位置: /assets/site.css
   功能: reset、CSS变量、基础排版、头部、页脚、通用组件
   ========================================================================== */

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: 1.6;
  color: var(--c-text);
  background-color: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: var(--c-primary);
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--c-orange);
}

ul,
ol {
  margin: 0;
  padding: 0;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

::selection {
  background: var(--c-neon);
  color: var(--c-ink);
}

/* ---------- CSS Variables ---------- */
:root {
  /* 色彩体系 */
  --c-primary: #0B1D3A;
  --c-primary-light: #16305A;
  --c-bg: #F4F6FA;
  --c-surface: #FFFFFF;
  --c-neon: #00FFAA;
  --c-orange: #FF6B00;
  --c-purple: #6C00FF;
  --c-ink: #0A0F1E;
  --c-silver: #C0C8D4;
  --c-text: #1A2233;
  --c-text-light: #5A6B8C;
  --c-text-inverse: #FFFFFF;
  --c-border: rgba(11, 29, 58, 0.12);

  /* 字体 */
  --font-heading: Archivo, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Hiragino Sans GB', sans-serif;
  --font-body: Inter, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Hiragino Sans GB', sans-serif;
  --text-xs: 12px;
  --text-sm: 14px;
  --text-md: 16px;
  --text-lg: 20px;
  --text-xl: 28px;
  --text-2xl: 40px;
  --text-3xl: 64px;
  --text-4xl: 96px;

  /* 间距 */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 40px;
  --space-5: 80px;
  --space-6: 120px;

  /* 效果 */
  --shadow-sm: 0 2px 8px rgba(10, 15, 30, 0.08);
  --shadow-md: 0 4px 24px rgba(10, 15, 30, 0.1);
  --shadow-lg: 0 8px 40px rgba(10, 15, 30, 0.18);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;

  /* 布局 */
  --container: 1200px;
  --border-w: 2px;

  /* 动效 */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 300ms;
}

/* ---------- 通用工具类 ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 12px 28px;
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  border: var(--border-w) solid transparent;
  transition: transform 300ms var(--ease), box-shadow 300ms var(--ease), background-color 300ms var(--ease), color 300ms var(--ease);
  white-space: nowrap;
}

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

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--c-neon);
  color: var(--c-ink);
  border-color: var(--c-neon);
}

.btn--primary:hover {
  background: #00D891;
  border-color: #00D891;
  color: var(--c-ink);
}

.btn--outline {
  background: transparent;
  color: var(--c-primary);
  border-color: var(--c-primary);
}

.btn--outline:hover {
  background: var(--c-primary);
  color: var(--c-text-inverse);
  box-shadow: 0 4px 20px rgba(11, 29, 58, 0.2);
}

.btn--sm {
  padding: 6px 16px;
  font-size: var(--text-sm);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  margin: 0 0 var(--space-4);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
  margin: 0;
}

.breadcrumb__item {
  font-size: var(--text-sm);
  color: var(--c-text-light);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: '/';
  margin-right: var(--space-1);
  color: var(--c-silver);
}

.breadcrumb__link {
  color: var(--c-text-light);
  text-decoration: none;
  transition: color 200ms ease;
}

.breadcrumb__link:hover {
  color: var(--c-primary);
}

.breadcrumb__item[aria-current="page"] {
  color: var(--c-primary);
  font-weight: 600;
}

/* ---------- 页首标题区 ---------- */
.page-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 3px solid var(--c-primary);
  position: relative;
}

.page-header::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 96px;
  height: 3px;
  background: var(--c-neon);
}

.page-title {
  font-size: var(--text-3xl);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-subtitle {
  font-size: var(--text-lg);
  color: var(--c-text-light);
  margin: var(--space-1) 0 0;
}

/* ---------- 头部 ---------- */
.skip-link {
  position: absolute;
  top: -48px;
  left: var(--space-2);
  z-index: 2000;
  background: var(--c-neon);
  color: var(--c-ink);
  padding: var(--space-1) var(--space-2);
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
  transition: top 200ms ease;
}

.skip-link:focus-visible {
  top: 0;
}

.site-header {
  background: var(--c-primary);
  color: var(--c-text-inverse);
  position: relative;
  border-bottom: 3px solid var(--c-neon);
}

.header-strip {
  height: 4px;
  background: linear-gradient(90deg, var(--c-neon) 0%, var(--c-purple) 55%, var(--c-neon) 100%);
}

.header-inner {
  display: flex;
  flex-direction: column;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background: var(--c-neon);
  color: var(--c-ink);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 20px;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 20px rgba(0, 255, 170, 0.3);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-lg);
  color: var(--c-text-inverse);
  line-height: 1.2;
  white-space: nowrap;
}

.brand-tagline {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 版本标签 */
.version-badge {
  display: inline-flex;
  align-items: center;
  margin-left: auto;
  padding: 4px 12px;
  background: rgba(255, 107, 0, 0.15);
  border: 1px solid var(--c-orange);
  color: #FF9A5C;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.version-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--c-orange);
  border-radius: 50%;
  margin-right: 6px;
  flex-shrink: 0;
}

/* 移动导航开关 */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 8px;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 200ms ease, background 200ms ease;
}

.nav-toggle:hover {
  border-color: var(--c-neon);
  background: rgba(0, 255, 170, 0.08);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--c-neon);
  border-radius: 2px;
  transition: transform 300ms var(--ease), opacity 300ms var(--ease);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

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

/* 主导航 */
.site-nav {
  display: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.site-nav[data-open] {
  display: block;
  animation: nav-drop 300ms var(--ease);
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: block;
  padding: 14px 0;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  font-size: var(--text-md);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 300ms var(--ease), border-color 300ms var(--ease), padding-left 300ms var(--ease);
}

.nav-link:hover {
  color: var(--c-neon);
}

.nav-link[aria-current="page"] {
  color: var(--c-neon);
  border-bottom-color: var(--c-neon);
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--c-ink);
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--space-6);
}

.footer-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--c-neon), var(--c-purple) 40%, var(--c-orange) 80%, var(--c-neon));
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-4);
  padding: var(--space-5) 0 var(--space-4);
}

.footer-col--brand {
  grid-column: span 4;
}

.footer-col {
  grid-column: span 3;
}

.footer-col--contact {
  grid-column: span 2;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.brand-mark--footer {
  width: 36px;
  height: 36px;
  font-size: 18px;
  box-shadow: 0 0 16px rgba(0, 255, 170, 0.25);
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--c-text-inverse);
}

.footer-slogan {
  font-size: var(--text-sm);
  color: var(--c-neon);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin: 0 0 var(--space-2);
}

.footer-desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  margin: 0;
}

.footer-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-md);
  color: var(--c-text-inverse);
  margin: 0 0 var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: 2px solid rgba(0, 255, 170, 0.3);
  display: inline-block;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 4px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color 200ms ease, padding-left 200ms ease;
}

.footer-links a:hover {
  color: var(--c-neon);
  padding-left: 4px;
}

.footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-contact li {
  padding: 3px 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  font-weight: 500;
  transition: color 200ms ease;
}

.footer-contact a:hover {
  color: var(--c-neon);
}

.footer-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-2) 0 var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.4);
  font-size: var(--text-xs);
}

.footer-bar span {
  white-space: nowrap;
}

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-3);
}

.grid--gap-sm {
  gap: var(--space-2);
}

.grid--gap-lg {
  gap: var(--space-4);
}

.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-12 { grid-column: span 12; }

/* ---------- 资料卡 ---------- */
.card {
  background: var(--c-surface);
  border: var(--border-w) solid var(--c-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-3);
  position: relative;
  transition: box-shadow 300ms var(--ease), transform 300ms var(--ease);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.card__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--c-primary);
  margin: 0;
}

.card__meta {
  font-size: var(--text-sm);
  color: var(--c-text-light);
}

/* ---------- 图片容器 ---------- */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--c-primary);
  border-radius: var(--radius-md);
  border: var(--border-w) solid var(--c-primary);
}

.img-frame::before {
  content: '';
  display: block;
  padding-top: 56.25%;
}

.img-frame--wide::before {
  padding-top: 56.25%;
}

.img-frame--square::before {
  padding-top: 100%;
}

.img-frame--portrait::before {
  padding-top: 125%;
}

.img-frame__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 滚动渐显 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 300ms cubic-bezier(0.4, 0, 0.2, 1), transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.js [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 焦点可见 ---------- */
:focus-visible {
  outline: 3px solid var(--c-neon);
  outline-offset: 2px;
}

.site-header :focus-visible {
  outline-color: var(--c-neon);
}

.site-footer :focus-visible {
  outline-color: var(--c-neon);
}

/* ---------- 响应式：平板 ---------- */
@media (max-width: 1024px) {
  .footer-grid {
    gap: var(--space-3);
  }

  .footer-col--brand {
    grid-column: span 6;
  }

  .footer-col {
    grid-column: span 3;
  }

  .footer-col--contact {
    grid-column: span 6;
  }
}

/* ---------- 响应式：移动端 ---------- */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-2);
  }

  .brand-name {
    font-size: var(--text-md);
  }

  .brand-tagline {
    display: none;
  }

  .version-badge {
    font-size: 10px;
    padding: 3px 8px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-link {
    padding: 12px var(--space-1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding: var(--space-4) 0 var(--space-3);
  }

  .footer-col--brand,
  .footer-col,
  .footer-col--contact {
    grid-column: span 1;
  }

  .footer-bar {
    flex-direction: column;
    gap: var(--space-1);
    align-items: flex-start;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .col-span-2,
  .col-span-3,
  .col-span-4,
  .col-span-5,
  .col-span-6,
  .col-span-7,
  .col-span-8,
  .col-span-12 {
    grid-column: span 1;
  }

  .page-title {
    font-size: var(--text-2xl);
  }

  .page-subtitle {
    font-size: var(--text-md);
  }
}

/* ---------- 平板双列 ---------- */
@media (min-width: 769px) and (max-width: 1024px) {
  .grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .col-span-2 { grid-column: span 2; }
  .col-span-3 { grid-column: span 3; }
  .col-span-4 { grid-column: span 4; }
  .col-span-5,
  .col-span-6,
  .col-span-7,
  .col-span-8,
  .col-span-12 { grid-column: span 6; }
}

/* ---------- 桌面导航 ---------- */
@media (min-width: 769px) {
  .nav-toggle {
    display: none;
  }

  .site-nav,
  .site-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: row;
    gap: 0;
  }

  .nav-item {
    margin: 0 var(--space-3) 0 0;
  }

  .nav-item:last-child {
    margin-right: 0;
  }

  .nav-link {
    display: inline-block;
    padding: 12px 0;
    border-bottom: 3px solid transparent;
  }

  .nav-link[aria-current="page"] {
    border-bottom-color: var(--c-neon);
  }
}

/* ---------- 动画减弱 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .site-nav[data-open] {
    animation: none;
  }

  .btn,
  .card,
  .nav-link {
    transition: none;
  }
}