/* ==========================================================================
   nav.foxnan.com — 前端样式
   设计基调：墨色底 + 极淡光晕 + 鎏金点缀，玻璃层卡片，克制而有质感
   @author 安卿辰  @since 2026-10-19
   ========================================================================== */

/* ---------- 布局变量（色彩变量统一由 theme.css 提供） ---------- */
:root {
  --radius:        15px;
  --ease:          cubic-bezier(0.22, 0.61, 0.36, 1);
  --maxw:          1240px;
}

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

/*
 * ⚠️ 必须显式覆盖：浏览器对 [hidden] 只给了 UA 样式的 display:none，
 * 作者样式里的 .empty{display:flex} 之类优先级更高会把它盖掉，
 * 导致 hidden 属性失效（空状态提示永远显示）。
 */
[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

::selection {
  background: var(--gold-soft);
  color: var(--text);
}

/* 滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-hi);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ---------- 背景层（定位与图案由 theme.css 统一管理，这里只放噪点纹理） ---------- */
.bg-grain {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 顶部 ---------- */
.hero {
  position: relative;
  /*
   * ⚠️ 必须高于 .wrap(1)：hero 自己形成层叠上下文，
   * 里面 .theme-pop 的 z-index 只在 hero 内部有效。
   * 若 hero 仍是 1，后面的 .wrap 会盖住面板底部（表现为面板"被裁掉一截"）。
   */
  z-index: 30;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 26px 0;
}

.hero-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.brand-mark {
  font-size: 15px;
  color: var(--gold);
  line-height: 1;
  filter: drop-shadow(0 0 12px var(--gold-soft));
}

.brand-text {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hero-tools {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.tool-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  transition: all 0.22s var(--ease);
  -webkit-tap-highlight-color: transparent;
}

.tool-btn svg { width: 16px; height: 16px; }

.tool-btn:hover {
  color: var(--gold);
  border-color: var(--border-hi);
  background: var(--surface-hi);
  transform: translateY(-1px);
}

/* 标题区 */
.hero-center {
  padding: 46px 0 34px;
  text-align: center;
}

.hero-title {
  margin: 0;
  font-size: clamp(27px, 4.6vw, 42px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.18;
  background: linear-gradient(180deg, var(--text) 0%, var(--text-soft) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  margin: 12px 0 0;
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 0.03em;
}

/* 搜索框 */
.search-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: 11px;
  max-width: 560px;
  margin: 30px auto 0;
  padding: 0 16px;
  height: 52px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  transition: all 0.26s var(--ease);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.045) inset;
}

.search-shell:focus-within {
  border-color: var(--gold);
  background: var(--surface-hi);
  box-shadow:
    0 0 0 4px var(--gold-soft),
    0 1px 0 rgba(255, 255, 255, 0.06) inset;
}

.search-ico {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  color: var(--muted);
  transition: color 0.22s var(--ease);
}

.search-shell:focus-within .search-ico { color: var(--gold); }

.search-input {
  flex: 1;
  min-width: 0;
  height: 100%;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--text);
  font-size: 14.5px;
  font-family: inherit;
  letter-spacing: 0.01em;
}

.search-input::placeholder { color: var(--muted); }
.search-input::-webkit-search-cancel-button { -webkit-appearance: none; }

.search-kbd {
  flex-shrink: 0;
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--icon-bg);
  color: var(--muted);
  font-size: 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  line-height: 1.6;
  transition: opacity 0.2s;
}

.search-shell:focus-within .search-kbd { opacity: 0; }

/* 分类快捷标签 */
.chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 22px auto 0;
  max-width: 780px;
}

.chip {
  padding: 5px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  transition: all 0.22s var(--ease);
  white-space: nowrap;
}

.chip:hover {
  color: var(--text);
  border-color: var(--border-hi);
  background: var(--surface-hi);
  transform: translateY(-1px);
}

.chip .chip-n {
  margin-left: 6px;
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

/* ---------- 主体 ---------- */
.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 8px 26px 70px;
}

.sec {
  margin-top: 42px;
  scroll-margin-top: 20px;
}

.sec:first-child { margin-top: 18px; }

.sec-head {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.sec-bar {
  width: 3px;
  height: 16px;
  border-radius: 2px;
  background: var(--accent, var(--gold));
  box-shadow: 0 0 12px -2px var(--accent, var(--gold));
}

.sec-ico {
  font-size: 14px;
  line-height: 1;
  opacity: 0.9;
}

.sec-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
}

.sec-count {
  font-size: 11.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

/* 卡片网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(232px, 1fr));
  gap: 11px;
}

.card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 13px 15px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition:
    transform 0.26s var(--ease),
    border-color 0.26s var(--ease),
    background 0.26s var(--ease),
    box-shadow 0.26s var(--ease);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* 悬停时左下角泛起的微光 */
.card::after {
  content: "";
  position: absolute;
  left: -30%;
  bottom: -80%;
  width: 160%;
  height: 150%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent, var(--gold)) 0%, transparent 62%);
  opacity: 0;
  transition: opacity 0.34s var(--ease);
  pointer-events: none;
  filter: blur(26px);
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hi);
  background: var(--surface-hi);
  box-shadow: var(--shadow);
}

.card:hover::after { opacity: 0.11; }

.card:active { transform: translateY(-1px) scale(0.995); }

.card-icon {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 10px;
  background: var(--icon-bg);
  border: 1px solid var(--border);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent, var(--gold));
  overflow: hidden;
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease);
}

.card:hover .card-icon {
  border-color: var(--border-hi);
  transform: scale(1.04);
}

.card-icon img {
  width: 21px;
  height: 21px;
  object-fit: contain;
  border-radius: 3px;
}

.card-body {
  position: relative;
  z-index: 1;
  min-width: 0;
  flex: 1;
}

.card-name {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-descr {
  margin-top: 2px;
  font-size: 11.5px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.01em;
}

.badge {
  flex-shrink: 0;
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--gold-soft);
  border: 1px solid var(--gold-soft);
  color: var(--gold);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.7;
}

.badge.new {
  background: rgba(111, 168, 152, 0.14);
  border-color: rgba(111, 168, 152, 0.32);
  color: var(--teal);
}

/* 置顶常驻的站点，图标外圈加一道金光 */
.card.is-hl .card-icon {
  border-color: var(--gold-soft);
  box-shadow: 0 0 14px -5px var(--gold);
}

/* 进场动画 */
.card {
  animation: cardIn 0.4s var(--ease) both;
  animation-delay: calc(var(--i, 0) * 12ms);
}

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

@media (prefers-reduced-motion: reduce) {
  .card { animation: none; }
  html { scroll-behavior: auto; }
}

/* 空结果 */
.empty {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 60px auto;
  color: var(--muted);
  font-size: 13.5px;
}

.empty-mark {
  font-size: 20px;
  color: var(--border-hi);
}

/* ---------- 页脚 ---------- */
.foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  flex-wrap: wrap;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 26px 46px;
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  font-variant-numeric: tabular-nums;
}

.foot-line {
  width: 26px;
  height: 1px;
  background: var(--border-hi);
}

.foot-dot { opacity: 0.5; }

/* ---------- PIN 验证页 ---------- */
.pin-screen {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px;
}

.pin-card {
  width: 100%;
  max-width: 340px;
  padding: 38px 30px 32px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  box-shadow: var(--shadow);
  text-align: center;
  animation: cardIn 0.5s var(--ease) both;
}

.pin-mark {
  font-size: 26px;
  color: var(--gold);
  line-height: 1;
  filter: drop-shadow(0 0 16px var(--gold-soft));
}

.pin-title {
  margin: 16px 0 0;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.pin-sub {
  margin: 7px 0 24px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.pin-input {
  width: 100%;
  height: 46px;
  padding: 0 16px;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: var(--icon-bg);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  text-align: center;
  letter-spacing: 0.2em;
  outline: none;
  transition: all 0.22s var(--ease);
}

.pin-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-soft);
}

.pin-btn {
  width: 100%;
  height: 44px;
  margin-top: 12px;
  border: 0;
  border-radius: 11px;
  background: var(--gold);
  color: var(--on-gold);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: all 0.22s var(--ease);
}

.pin-btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.pin-btn:active { transform: translateY(0); }

.pin-err {
  min-height: 17px;
  margin: 12px 0 0;
  color: var(--danger);
  font-size: 12px;
}

/* ---------- 主题切换面板 ---------- */
.theme-pop {
  position: absolute;
  top: 44px;
  right: 0;
  z-index: 60;
  width: 306px;
  max-height: calc(100vh - 92px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 16px 16px 14px;
  border-radius: 16px;
  border: 1px solid var(--border-hi);
  background: var(--bg-2);
  backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  box-shadow: 0 26px 60px -22px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--border) inset;
  animation: popIn 0.22s var(--ease) both;
}

/* 面板自己的细滚动条，别用系统默认的粗条 */
.theme-pop::-webkit-scrollbar { width: 6px; }
.theme-pop::-webkit-scrollbar-thumb {
  background: var(--border-hi);
  border-radius: 99px;
}

@keyframes popIn {
  from { opacity: 0; transform: translateY(-6px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.tp-label {
  margin: 0 0 9px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.tp-group + .tp-group { margin-top: 16px; }

/* 配色色卡 */
.tp-swatches {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.tp-swatch {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 0.02em;
  transition: color 0.2s var(--ease);
}

.tp-swatch i {
  display: block;
  width: 100%;
  height: 48px;
  border-radius: 11px;
  border: 1px solid var(--border-hi);
  box-shadow: 0 4px 12px -6px rgba(0, 0, 0, 0.6);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
}

.tp-swatch:hover i { transform: translateY(-2px); }
.tp-swatch:hover { color: var(--text-soft); }

.tp-swatch.is-on { color: var(--text); }
.tp-swatch.is-on i {
  border-color: var(--text);
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--bg-2);
}

/* 选中打勾 */
.tp-swatch.is-on i::after {
  content: "✓";
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.65);
}

/* 背景预览 */
.tp-bgs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.tp-bg {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 0.02em;
  transition: color 0.2s var(--ease);
}

.tp-bg i {
  display: block;
  height: 38px;
  margin-bottom: 6px;
  border-radius: 9px;
  border: 1px solid var(--border);
  /*
   * 预览块固定用深底 + 固定亮度的纹理，
   * 否则在浅色主题下所有背景都会糊成一片米色，根本分不出区别。
   */
  --grid-line: rgba(255, 255, 255, 0.3);
  --bamboo-line: rgba(255, 255, 255, 0.36);
  --glow-1: rgba(201, 162, 39, 0.5);
  --glow-2: rgba(111, 168, 152, 0.4);
  --glow-3: rgba(91, 141, 239, 0.35);
  background-color: #121514;
  background-image: var(--bg-layer, none);
  background-size: var(--bg-size, auto);
  background-position: center;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.tp-bg:hover i { transform: translateY(-2px); border-color: var(--border-hi); }
.tp-bg:hover { color: var(--text-soft); }

.tp-bg.is-on { color: var(--text); }
.tp-bg.is-on i {
  border-color: var(--gold);
  box-shadow: 0 0 0 1px var(--gold);
}

/* 图片背景预览用斜纹占位 */
.tp-bg[data-bg="photo"] i {
  background-image: repeating-linear-gradient(
    45deg, var(--surface-hi) 0 6px, transparent 6px 12px
  );
}

.tp-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 14px;
  padding-top: 11px;
  border-top: 1px solid var(--border);
  font-size: 10.5px;
  color: var(--muted);
}

.tp-foot > span {
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tp-reset {
  flex-shrink: 0;
  white-space: nowrap;
  padding: 3px 9px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 10.5px;
  transition: all 0.2s var(--ease);
}

.tp-reset:hover { color: var(--text); border-color: var(--border-hi); }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .hero { padding: 16px 16px 0; }
  .hero-center { padding: 34px 0 24px; }
  .wrap { padding: 6px 16px 56px; }
  .foot { padding: 0 16px 34px; }

  /* 窄屏把主题面板改成贴底的浮层，避免被视口裁掉 */
  .theme-pop {
    position: fixed;
    top: auto;
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: auto;
    max-height: 72vh;
    overflow-y: auto;
  }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
    gap: 9px;
  }

  .card {
    flex-direction: column;
    align-items: flex-start;
    gap: 9px;
    padding: 13px 13px 14px;
  }

  .card-icon { width: 34px; height: 34px; }

  .card-name { font-size: 13px; }
  .card-descr { font-size: 11px; }

  .sec { margin-top: 32px; }
  .chips { gap: 6px; }
  .chip { padding: 4px 11px; font-size: 12px; }
  .search-shell { height: 48px; }
  .search-kbd { display: none; }
}

@media (max-width: 380px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 24px; }
}