/* ============================================================
   KY体育地址 · Site Kit 共享样式
   文件位置 /assets/site.css
   深空蓝 × 活力橙 · 运动数据指挥中心
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  --ky-primary: #0A2540;
  --ky-secondary: #FF6B35;
  --ky-bg-dark: #071620;
  --ky-surface: #122B3E;
  --ky-surface-alt: #1C3A52;
  --ky-text: #F5F7FA;
  --ky-text-dim: #A9B7C6;
  --ky-border: #2E4A66;
  --ky-cyan: #00E5CC;
  --ky-success: #4CAF50;
  --ky-warning: #FFC107;
  --ky-danger: #E53935;

  --ky-font-heading: 'Noto Sans SC', 'Arial Black', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --ky-font-body: 'Noto Sans SC', 'Helvetica Neue', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
  --ky-font-mono: 'Roboto Mono', 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, 'Courier New', monospace;

  --ky-header-h: 72px;
  --ky-shell-w: 1320px;
}

/* ---------- 2. Reset 与基础 ---------- */
*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--ky-font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ky-text);
  background-color: var(--ky-primary);
  background-image: radial-gradient(circle at 1px 1px, rgba(46, 74, 102, 0.16) 1px, transparent 1.5px);
  background-size: 28px 28px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

#main-content {
  scroll-margin-top: calc(var(--ky-header-h) + 16px);
}

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

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

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: var(--ky-secondary);
  color: var(--ky-bg-dark);
}

:focus-visible {
  outline: 2px solid var(--ky-cyan);
  outline-offset: 2px;
}

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ky-font-heading);
  font-weight: 900;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--ky-text);
}

h1 { font-size: clamp(30px, 5vw, 56px); }
h2 { font-size: clamp(24px, 3.5vw, 40px); }
h3 { font-size: clamp(20px, 2.5vw, 30px); }
h4 { font-size: 18px; }
h5 { font-size: 16px; }
h6 { font-size: 14px; }

p {
  margin: 0 0 1em;
}

.mono {
  font-family: var(--ky-font-mono);
}

.text-dim {
  color: var(--ky-text-dim);
}

/* ---------- 4. 布局工具 ---------- */
.container {
  max-width: var(--ky-shell-w);
  width: 100%;
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 40px);
}

.section {
  padding-block: clamp(48px, 7vw, 112px);
}

/* ---------- 5. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 1000;
  background: var(--ky-secondary);
  color: var(--ky-bg-dark);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.2;
  padding: 10px 20px;
  border-radius: 0 0 6px 6px;
  transition: top 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

/* ---------- 6. 滚动进度 ---------- */
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--ky-secondary), var(--ky-cyan));
  z-index: 110;
  pointer-events: none;
}

/* ---------- 7. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 22, 32, 0.97);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ky-border);
}

.header-shell {
  max-width: var(--ky-shell-w);
  min-height: var(--ky-header-h);
  width: 100%;
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 40px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* 品牌 */
.brand-block {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  position: relative;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 8px;
  border: 1px solid var(--ky-border);
  background:
    linear-gradient(135deg, transparent 42%, var(--ky-secondary) 42%, var(--ky-secondary) 58%, transparent 58%),
    var(--ky-bg-dark);
}

.brand-mark-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--ky-cyan);
  transform: translate(-50%, -50%) rotate(45deg);
  box-shadow: 0 0 10px rgba(0, 229, 204, 0.45);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--ky-font-heading);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--ky-text);
  white-space: nowrap;
}

.brand-slogan {
  margin-top: 3px;
  font-family: var(--ky-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ky-cyan);
  white-space: nowrap;
}

/* 导航 */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  color: var(--ky-text-dim);
  border-radius: 4px;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.nav-index {
  font-family: var(--ky-font-mono);
  font-size: 10px;
  color: var(--ky-border);
  transition: color 0.18s ease;
}

.nav-label {
  line-height: 1;
}

@media (hover: hover) {
  .nav-link:hover {
    background: var(--ky-surface);
    color: var(--ky-text);
  }
  .nav-link:hover .nav-index {
    color: var(--ky-secondary);
  }
}

.nav-link[aria-current="page"] {
  background: var(--ky-surface);
  color: var(--ky-text);
}

.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--ky-secondary);
}

.nav-link[aria-current="page"] .nav-index {
  color: var(--ky-secondary);
  font-weight: 700;
}

/* 头部行动区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* 实时状态指示 */
.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ky-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ky-text-dim);
  border: 1px solid var(--ky-border);
  border-radius: 3px;
  background: var(--ky-surface);
  padding: 5px 10px;
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ky-success);
  box-shadow: 0 0 8px rgba(76, 175, 80, 0.6);
  animation: kyLivePulse 2.2s ease-in-out infinite;
}

.live-label {
  line-height: 1;
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--ky-font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  padding: 11px 20px;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.btn-label {
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ky-secondary);
  color: var(--ky-bg-dark);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

@media (hover: hover) {
  .btn-primary:hover {
    background: #FF8350;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.30);
  }
}

.btn-outline {
  border-color: var(--ky-secondary);
  color: var(--ky-secondary);
  background: transparent;
}

@media (hover: hover) {
  .btn-outline:hover {
    background: rgba(255, 107, 53, 0.12);
  }
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--ky-border);
  border-radius: 6px;
  background: var(--ky-surface);
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 1px;
  background: var(--ky-text);
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.nav-toggle-bar + .nav-toggle-bar {
  margin-top: 4px;
}

@media (hover: hover) {
  .nav-toggle:hover {
    border-color: var(--ky-secondary);
    background: var(--ky-surface-alt);
  }
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) 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(-6px) rotate(-45deg);
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--ky-bg-dark);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: min(480px, 100%);
  background: linear-gradient(90deg, var(--ky-secondary) 0%, var(--ky-secondary) 60%, var(--ky-cyan) 100%);
  z-index: 1;
}

.footer-shell {
  max-width: var(--ky-shell-w);
  width: 100%;
  margin-inline: auto;
  padding: 40px clamp(16px, 3vw, 40px) 24px;
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-bottom: 28px;
  border-bottom: 1px dashed var(--ky-border);
}

.footer-tag {
  display: inline-block;
  font-family: var(--ky-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ky-text-dim);
  background: var(--ky-surface);
  border: 1px solid var(--ky-border);
  padding: 6px 14px;
  clip-path: polygon(5px 0, 100% 0, calc(100% - 5px) 100%, 0 100%);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 280px) 1fr;
  gap: 32px;
  align-items: center;
  padding: 36px 0;
  border-bottom: 1px dashed var(--ky-border);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand-mark {
  position: relative;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 8px;
  border: 1px solid var(--ky-border);
  background:
    linear-gradient(135deg, transparent 42%, var(--ky-secondary) 42%, var(--ky-secondary) 58%, transparent 58%),
    var(--ky-bg-dark);
}

.footer-brand-mark::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--ky-cyan);
  transform: translate(-50%, -50%) rotate(45deg);
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.footer-brand-name {
  font-family: var(--ky-font-heading);
  font-weight: 900;
  font-size: 20px;
  color: var(--ky-text);
}

.footer-slogan {
  margin-top: 2px;
  font-family: var(--ky-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ky-cyan);
}

.footer-statement {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ky-text-dim);
  max-width: 640px;
  margin: 0;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  padding: 40px 0;
}

.footer-col-title {
  font-family: var(--ky-font-heading);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--ky-cyan);
  margin-bottom: 18px;
  text-transform: uppercase;
}

.footer-col-index {
  font-family: var(--ky-font-mono);
  font-size: 10px;
  color: var(--ky-secondary);
  margin-right: 6px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  display: inline-block;
  font-size: 14px;
  color: var(--ky-text-dim);
  transition: color 0.18s ease;
}

.footer-links a::before {
  content: '›';
  display: inline-block;
  font-family: var(--ky-font-mono);
  font-size: 12px;
  color: var(--ky-secondary);
  margin-right: 6px;
  transition: transform 0.18s ease;
}

@media (hover: hover) {
  .footer-links a:hover {
    color: var(--ky-text);
  }
  .footer-links a:hover::before {
    transform: translateX(3px);
  }
}

.footer-contact li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 13px;
  color: var(--ky-text-dim);
  padding: 8px 0;
  border-bottom: 1px dashed rgba(46, 74, 102, 0.45);
}

.footer-contact li:last-child {
  border-bottom: 0;
}

.footer-contact span {
  font-family: var(--ky-font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ky-border);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 20px;
  border-top: 1px solid var(--ky-border);
  font-size: 12px;
  color: var(--ky-text-dim);
}

.footer-copy {
  margin: 0;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-legal a {
  color: var(--ky-text-dim);
  transition: color 0.18s ease;
}

@media (hover: hover) {
  .footer-legal a:hover {
    color: var(--ky-cyan);
  }
}

.footer-icp {
  font-family: var(--ky-font-mono);
  font-size: 11px;
  color: var(--ky-border);
  margin: 0;
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--ky-text-dim);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: '/';
  color: var(--ky-border);
  margin-right: 8px;
}

.breadcrumb a {
  color: var(--ky-text-dim);
  transition: color 0.18s ease;
}

@media (hover: hover) {
  .breadcrumb a:hover {
    color: var(--ky-cyan);
  }
}

/* ---------- 10. 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background-color: var(--ky-surface);
  aspect-ratio: 16 / 9;
}

.media-frame-4-3 {
  aspect-ratio: 4 / 3;
}

.media-frame-1-1 {
  aspect-ratio: 1 / 1;
}

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

.media-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ky-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ky-text-dim);
  background: repeating-linear-gradient(
    -45deg,
    var(--ky-surface) 0,
    var(--ky-surface) 10px,
    var(--ky-surface-alt) 10px,
    var(--ky-surface-alt) 20px
  );
}

.media-placeholder span {
  border: 1px solid var(--ky-border);
  background: rgba(7, 22, 32, 0.7);
  padding: 4px 12px;
}

/* ---------- 11. 响应式 ---------- */
@media (max-width: 1100px) {
  :root {
    --ky-header-h: 64px;
  }

  .nav-index {
    display: none;
  }

  .nav-link {
    padding: 8px 10px;
    gap: 4px;
    font-size: 13px;
  }

  .brand-slogan {
    display: none;
  }
}

@media (max-width: 860px) {
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: var(--ky-bg-dark);
    border-bottom: 1px solid var(--ky-border);
    box-shadow: 0 18px 32px rgba(0, 0, 0, 0.35);
    padding: 16px;
    max-height: calc(100vh - var(--ky-header-h));
    overflow-y: auto;
  }

  .site-nav[data-open="true"] {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    width: 100%;
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 15px;
    gap: 8px;
  }

  .nav-link[aria-current="page"]::after {
    left: 16px;
    right: auto;
    width: 28px;
    bottom: 8px;
  }

  .nav-index {
    display: inline;
  }

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

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

  .footer-columns {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-col:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .header-shell {
    gap: 12px;
  }

  .brand-link {
    gap: 8px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand-name {
    font-size: 16px;
  }

  .live-indicator {
    display: none;
  }

  .btn-primary {
    padding: 8px 14px;
    font-size: 13px;
  }

  .footer-columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-col:last-child {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 400px) {
  .header-shell {
    padding-inline: 12px;
    gap: 8px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .brand-name {
    font-size: 14px;
  }

  .btn-primary {
    padding: 8px 10px;
    font-size: 12px;
  }
}

/* ---------- 12. 减弱动态 ---------- */
@keyframes kyLivePulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

@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;
  }
}