/* ==========================================================================
   免费看台 · BAPP PLUS 中文站  /assets/site.css
   夜场转播控制室 × 看台文化：深海蓝底、刻线边框、比分牌数字、L 形框架导航
   ========================================================================== */

:root {
  /* 夜场色板 */
  --ink-900: #061725;
  --ink-800: #0a1622;
  --ink-700: #0c2c46;
  --signal: #ff6a1f;
  --cyan: #2fe0c8;
  --red: #e03b52;
  --amber: #ffc64a;
  --paper: #f6f2e8;
  --mist: #93a9be;
  --green: #3dd68c;

  --line: rgba(147, 169, 190, 0.26);
  --line-soft: rgba(147, 169, 190, 0.12);
  --panel: rgba(12, 44, 70, 0.5);

  /* 字体 */
  --font-display: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC",
    "PingFang SC", "Microsoft YaHei", "Oswald", system-ui, sans-serif;
  --font-body: "HarmonyOS Sans SC", "PingFang SC", "Noto Sans SC",
    "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, "SFMono-Regular",
    Menlo, Consolas, monospace;

  /* 版式骨架 */
  --rail-w: 178px;
  --header-h: 84px;
  --gap: clamp(16px, 2vw, 26px);
  --shadow-lift: 0 22px 44px -30px rgba(0, 0, 0, 0.92);
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --t-fast: 140ms;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 18px);
}

body {
  margin: 0;
  padding: var(--header-h) 0 0 var(--rail-w);
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 68% at 88% -12%, rgba(47, 224, 200, 0.1), transparent 62%),
    radial-gradient(92% 58% at 4% 108%, rgba(255, 106, 31, 0.1), transparent 58%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

img,
svg,
video,
picture {
  max-width: 100%;
}

img,
video {
  height: auto;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

ul,
ol {
  margin: 0 0 1.1em;
  padding-left: 1.2em;
}

/* ------------------------------------------------------------- 中文排版 */
h1,
h2,
h3,
h4 {
  margin: 0 0 0.55em;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.18;
}

h1 { font-size: clamp(34px, 5vw, 56px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 28px); }
h4 { font-size: 20px; }

p {
  margin: 0 0 1.1em;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--t-fast) var(--ease);
}

a:hover {
  color: var(--signal);
}

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

/* ------------------------------------------------------------ 通用工具 */
.container {
  width: min(100% - clamp(32px, 6vw, 96px), 1220px);
  margin-inline: auto;
}

.container--wide {
  width: min(100% - clamp(28px, 4vw, 72px), 1440px);
  margin-inline: auto;
}

.section {
  padding-block: clamp(44px, 6vw, 84px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--signal);
}

.num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.side-note {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mist);
}

.grid {
  display: grid;
  gap: var(--gap);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.panel {
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.panel--lift {
  box-shadow: var(--shadow-lift);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.7;
}

.tag--live { color: var(--green); }
.tag--out { color: var(--red); }
.tag--soon { color: var(--amber); }
.tag--info { color: var(--cyan); }

/* ---------------------------------------------------------------- 面包屑 */
.breadcrumb {
  padding-top: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "/";
  color: rgba(147, 169, 190, 0.5);
}

.breadcrumb a {
  color: var(--mist);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--signal);
}

/* ------------------------------------------------------------ 图片容器 */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(135deg, rgba(12, 44, 70, 0.92), rgba(6, 23, 37, 0.96));
}

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

.media-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent 72%);
  opacity: 0.6;
  pointer-events: none;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-figure {
  margin: 0;
}

.media-caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.6;
  text-decoration: none;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

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

.btn-signal {
  color: #061725;
  background: var(--signal);
  border-color: var(--signal);
  font-weight: 700;
}

.btn-signal:hover {
  color: #061725;
  background: var(--amber);
  border-color: var(--amber);
}

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

.btn-ghost:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ------------------------------------------------------------ 跳转链接 */
.skip-link {
  position: fixed;
  top: -120px;
  left: 10px;
  z-index: 200;
  padding: 12px 22px;
  font-weight: 700;
  color: var(--ink-900);
  background: var(--signal);
  border-radius: 2px;
  text-decoration: none;
  transition: top var(--t-fast) var(--ease);
}

.skip-link:focus {
  top: 10px;
  color: var(--ink-900);
}

/* ------------------------------------------------------------ 滚动进度 */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  height: 2px;
  background: rgba(147, 169, 190, 0.14);
  pointer-events: none;
}

.scroll-progress > span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--signal));
  transition: width 90ms linear;
}

/* ================================================================= 头部 */
.site-header {
  position: relative;
  z-index: 80;
}

.masthead {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 18px;
  height: var(--header-h);
  padding: 0 clamp(16px, 2.4vw, 32px);
  background: linear-gradient(180deg, rgba(6, 23, 37, 0.98), rgba(6, 23, 37, 0.88));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand {
  position: relative;
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: 1px;
  padding-left: 14px;
  text-decoration: none;
}

.brand::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: linear-gradient(180deg, var(--signal), var(--amber));
}

.brand-mark {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
  transition: color var(--t-fast) var(--ease);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.brand:hover .brand-mark {
  color: var(--signal);
}

.masthead-tagline {
  margin: 0 0 0 6px;
  padding-left: 20px;
  border-left: 1px solid var(--line);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.masthead-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 5px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(12, 44, 70, 0.55);
  white-space: nowrap;
}

.masthead-status {
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.pulse-dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2.4s ease-out infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(61, 214, 140, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(61, 214, 140, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 214, 140, 0); }
}

.masthead-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: rgba(12, 44, 70, 0.7);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.nav-toggle:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 16px;
  height: 12px;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  transition: transform var(--t-fast) var(--ease), top var(--t-fast) var(--ease);
}

.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { top: 10px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  top: 5px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  top: 5px;
  transform: rotate(-45deg);
}

/* --------------------------------------------- 左侧纵轨（桌面端 L 形边） */
.site-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  bottom: 0;
  z-index: 85;
  display: flex;
  flex-direction: column;
  width: var(--rail-w);
  padding: 26px 0 20px;
  overflow-y: auto;
  background: linear-gradient(180deg, rgba(10, 22, 34, 0.98), rgba(6, 23, 37, 0.94));
  border-right: 1px solid var(--line);
}

.site-nav-label {
  margin: 0 0 14px;
  padding: 0 20px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mist);
}

.site-nav-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav-item {
  position: relative;
}

.site-nav-link {
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: center;
  gap: 6px;
  padding: 11px 18px 11px 17px;
  font-size: 15px;
  color: var(--mist);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.site-nav-link:hover {
  color: var(--paper);
  background: rgba(47, 224, 200, 0.07);
  border-left-color: var(--cyan);
}

.site-nav-link[aria-current="page"] {
  color: #061725;
  background: var(--signal);
  border-left-color: var(--amber);
}

.site-nav-link[aria-current="page"]:hover {
  color: #061725;
  background: var(--signal);
}

.site-nav-link[aria-current="page"] .nav-idx {
  color: rgba(6, 23, 37, 0.7);
}

.nav-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.nav-name {
  letter-spacing: 0.02em;
}

.site-nav-foot {
  margin: auto 20px 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

/* ================================================================= 页脚 */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 22, 34, 0.72), rgba(6, 23, 37, 0.96));
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(360px, 62%);
  height: 2px;
  background: linear-gradient(90deg, var(--signal), var(--amber) 55%, transparent);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.7fr) minmax(0, 1.2fr);
  gap: clamp(28px, 4vw, 56px);
  width: min(100% - clamp(32px, 6vw, 96px), 1220px);
  margin-inline: auto;
  padding: clamp(40px, 5vw, 68px) 0 clamp(28px, 4vw, 46px);
}

.footer-mark {
  margin: 0 0 2px;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.footer-sub {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.footer-summary {
  max-width: 34ch;
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.footer-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.legend-dot--live { background: var(--green); }
.legend-dot--out { background: var(--red); }
.legend-dot--back { background: var(--amber); }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.footer-col-title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.footer-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-list a {
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}

.footer-list a:hover {
  color: var(--signal);
  padding-left: 5px;
}

.contact-list {
  display: grid;
  gap: 12px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 2px 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.contact-key {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.contact-val {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.copy-btn {
  align-self: end;
  padding: 3px 10px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease);
}

.copy-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.copy-btn[data-copied] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.contact-note {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
  width: min(100% - clamp(32px, 6vw, 96px), 1220px);
  margin-inline: auto;
  padding: 18px 0 calc(26px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--mist);
}

.footer-base p {
  margin: 0;
}

.footer-legal {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--paper);
}

.footer-base .footer-year {
  margin-left: auto;
  font-family: var(--font-mono);
}

/* ------------------------------------------------------------ 显现动效 */
.js-ready .reveal {
  opacity: 0;
  transform: translateY(12px);
}

.js-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 480ms var(--ease) var(--reveal-delay, 0ms),
    transform 480ms var(--ease) var(--reveal-delay, 0ms);
}

/* ------------------------------------------------------------ 响应式 */
@media (max-width: 1180px) {
  .masthead-tagline {
    display: none;
  }
}

@media (max-width: 1024px) {
  :root {
    --rail-w: 0px;
    --header-h: 68px;
  }

  body {
    padding-left: 0;
  }

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

  .site-nav {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 80;
    width: 100%;
    max-height: 78vh;
    padding: 20px 18px calc(26px + env(safe-area-inset-bottom, 0px));
    border-right: 0;
    border-top: 2px solid var(--signal);
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -26px 60px -30px rgba(0, 0, 0, 0.9);
    opacity: 0;
    visibility: hidden;
    transform: translateY(102%);
    transition: transform 260ms var(--ease), opacity 200ms linear,
      visibility 0s linear 260ms;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: transform 260ms var(--ease), opacity 160ms linear, visibility 0s;
  }

  .site-nav-label {
    margin-bottom: 12px;
    padding: 0 4px;
  }

  .site-nav-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .site-nav-link {
    grid-template-columns: 26px 1fr;
    padding: 13px 12px;
    font-size: 14px;
    background: rgba(12, 44, 70, 0.5);
    border-left: 2px solid transparent;
    border-radius: 2px;
  }

  .site-nav-link[aria-current="page"] {
    background: var(--signal);
    border-left-color: var(--amber);
  }

  .site-nav-foot {
    margin-top: 18px;
    margin-inline: 4px;
  }
}

@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-contact {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .masthead-meta {
    display: none;
  }

  .brand-mark {
    font-size: 19px;
  }
}

@media (max-width: 640px) {
  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .footer-contact {
    grid-column: auto;
  }

  .footer-base {
    gap: 6px 16px;
  }

  .footer-base .footer-year {
    margin-left: 0;
    width: 100%;
  }
}

@media (max-width: 560px) {
  .masthead-cta {
    display: none;
  }
}

/* ------------------------------------------------- 动效偏好与打印兜底 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .pulse-dot {
    animation: none;
  }

  .js-ready .reveal,
  .js-ready .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn:hover,
  .footer-list a:hover {
    transform: none;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}