/* ==================== 基础 ==================== */
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { width: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 20px 20px;
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color .3s, color .3s;
}

.hidden { display: none !important; }

/* ==================== 滚动条 ==================== */
::-webkit-scrollbar { width: 14px; height: 14px; }
::-webkit-scrollbar-track {
  background: var(--chrome-mid);
  border-left: 1px solid var(--border-dark);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--chrome-light), var(--chrome-dark));
  border: 2px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
}
::-webkit-scrollbar-thumb:hover { filter: brightness(1.1); }
::-webkit-scrollbar-corner { background: var(--chrome-mid); }

/* ==================== 跑马灯 ==================== */
.marquee {
  background: #000000;
  color: #ffff00;
  overflow: hidden;
  padding: 9px 0;
  border-bottom: 2px solid var(--border-dark);
  position: relative;
  z-index: 30;
  display: flex;
  align-items: center;
}
.marquee-track {
  display: flex;
  flex-shrink: 0;
  animation: marquee 40s linear infinite;
  animation-delay: -5s;
  will-change: transform;
}
.marquee-group { display: flex; flex-shrink: 0; }
.marquee-group span {
  padding-right: 90px;
  white-space: nowrap;
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 10px;
  font-weight: bold;
  font-style: italic;
  letter-spacing: 2px;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ==================== 顶栏 ==================== */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: linear-gradient(180deg, var(--chrome-light) 0%, var(--chrome-mid) 55%, var(--chrome-dark) 100%);
  border-bottom: 2px solid var(--border-dark);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
}
.clock {
  display: flex;
  gap: 10px;
  align-items: baseline;
  flex-shrink: 0;
  min-width: 0;
}
.greeting { font-weight: bold; }
.time { font-family: 'Press Start 2P', monospace; font-size: 11px; }
.date { color: var(--text-muted); font-size: 12px; }

.search-engine {
  display: flex;
  flex: 1;
  min-width: 240px;
  max-width: 520px;
  border: 2px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
  background: var(--window-bg);
}
.engine-select, .engine-input {
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 13px;
  padding: 5px 8px;
  color: var(--text);
  outline: none;
  min-width: 0;
}
.engine-input { flex: 1; min-width: 0; }

.btn {
  font-family: inherit;
  font-size: 13px;
  padding: 5px 10px;
  cursor: pointer;
  color: var(--text);
  background: linear-gradient(180deg, var(--chrome-light), var(--chrome-mid) 60%, var(--chrome-dark));
  border: 2px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
  white-space: nowrap;
  text-decoration: none;
}
.btn:hover { filter: brightness(1.08); }
.btn:active, .btn.active {
  border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
  filter: brightness(0.95);
}
.topbar-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
  margin-left: auto;
}

/* ==================== 站内过滤 ==================== */
/* 站内过滤下拉 */
.filter-wrap { position: relative; }
.filter-pop {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 300px;
  max-width: calc(100vw - 20px);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  background: var(--window-bg);
  border: 2px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
  z-index: 100;
}
.filter-pop::before {
  content: '';
  position: absolute;
  top: -7px;
  right: 16px;
  width: 10px;
  height: 10px;
  background: var(--window-bg);
  border-left: 2px solid var(--border-light);
  border-top: 2px solid var(--border-light);
  transform: rotate(45deg);
}
.filter-pop input {
  flex: 1;
  min-width: 0;
  padding: 5px 8px;
  font-family: inherit;
  font-size: 13px;
  border: 2px solid;
  border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
  background: var(--bg);
  color: var(--text);
  outline: none;
}
.filter-count {
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
}

/* ==================== 布局 ==================== */
.layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 16px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px;
  align-items: start;
}
.sidebar {
  position: sticky;
  top: 72px;
  background: var(--window-bg);
  border: 2px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
  padding: 8px;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  min-width: 0;
}
.category-nav { display: flex; flex-direction: column; gap: 2px; }
.nav-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  border: 1px solid transparent;
  white-space: nowrap;
  min-width: 0;
}
.nav-link > span:first-child {
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.nav-link:hover { background: var(--link-hover); border-color: var(--border-dark); }
.nav-link.active { font-weight: bold; background: var(--chrome-mid); border-color: var(--border-dark); }
.nav-count {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--text-muted);
}
.sidebar-note {
  margin-top: 12px;
  padding: 10px 8px 4px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-dark);
}

.content { min-width: 0; }

/* ==================== 窗口 ==================== */
.window {
  background: var(--window-bg);
  border: 2px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
  margin-bottom: 16px;
  scroll-margin-top: 80px;
  min-width: 0;
}
.window-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 6px 5px 10px;
  background: linear-gradient(180deg, var(--chrome-light), var(--chrome-mid) 60%, var(--chrome-dark));
  border-bottom: 2px solid var(--border-dark);
  font-family: 'Press Start 2P', system-ui, sans-serif;
  font-size: 12px;
  font-style: italic;
  font-weight: bold;
  gap: 8px;
  min-width: 0;
}
.window-title-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  overflow: hidden;
}
.window-title-left > span:first-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
.window-count {
  font-family: system-ui, sans-serif;
  font-style: normal;
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}
.window-controls {
  display: flex;
  gap: 3px;
  flex-shrink: 0;
}
.win-btn {
  width: 17px;
  height: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, sans-serif;
  font-style: normal;
  font-size: 10px;
  line-height: 1;
  color: var(--text);
  background: linear-gradient(180deg, var(--chrome-light), var(--chrome-dark));
  border: 1px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
  user-select: none;
}
.win-btn.win-close { cursor: pointer; }
.win-btn.win-close:hover { background: #c04040; color: #fff; }
.window.collapsed .link-list { display: none; }

/* ==================== 链接列表 ==================== */
.link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
  padding: 8px;
}
.link-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 9px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid transparent;
  min-width: 0;
  overflow: hidden;
}
.link-item:hover { background: var(--link-hover); border-color: var(--border-dark); }
.link-icon {
  width: 30px; height: 30px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--chrome-light), var(--chrome-dark));
  border: 2px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  color: var(--text);
}
.link-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
  gap: 1px;
}
.link-name {
  font-weight: bold;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.link-desc {
  font-size: 12px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.link-url {
  font-size: 11px;
  color: var(--text-muted);
  opacity: .7;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-decoration: underline;
}

/* ==================== 页脚 ==================== */
.footer {
  text-align: center;
  padding: 16px 0 8px;
  color: var(--text-muted);
  font-size: 12px;
}

/* ==================== 下雪 ==================== */
#snow-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* ==================== 终端友情链接 ==================== */
.terminal {
  background: #0a0a0a;
  border: 2px solid;
  border-color: #4a4a4a #0a0a0a #0a0a0a #4a4a4a;
  margin-bottom: 16px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', 'Courier New', monospace;
  color: #c8c8c8;
  font-size: 13px;
  line-height: 1.7;
  min-width: 0;
  overflow: hidden;
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: linear-gradient(180deg, #3a3a3a, #1c1c1c);
  border-bottom: 1px solid #000;
  font-size: 11px;
  color: #aaa;
}
.terminal-dot {
  width: 9px;
  height: 9px;
  background: linear-gradient(180deg, #cfcfcf, #616161);
  border: 1px solid #000;
  border-radius: 50%;
  flex-shrink: 0;
}
.terminal-title { margin-left: 6px; }
.terminal-body { padding: 12px 14px; min-width: 0; }
.terminal-line { white-space: pre-wrap; word-break: break-all; }
.terminal-prompt { color: #33ff66; margin-right: 6px; }
.terminal-cmd { color: #ffffff; }
.terminal-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 2px 0 2px 2px;
  color: inherit;
  text-decoration: none;
  min-width: 0;
  overflow: hidden;
}
.terminal-link:hover { background: rgba(51, 255, 102, 0.08); }
.terminal-arrow { color: #33ff66; flex-shrink: 0; }
.terminal-name { color: #ffffff; font-weight: bold; flex-shrink: 0; }
.terminal-url {
  color: #33ff66;
  text-decoration: underline;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 45%;
  flex-shrink: 1;
  min-width: 0;
}
.terminal-desc {
  color: #888;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}
.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: #33ff66;
  vertical-align: text-bottom;
  animation: term-blink 1s step-end infinite;
}
@keyframes term-blink { 50% { opacity: 0; } }

/* ==================== 回顶部 ==================== */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 9999;
  width: 42px;
  height: 42px;
  font-size: 14px;
  cursor: pointer;
  color: var(--text);
  background: linear-gradient(180deg, var(--chrome-light), var(--chrome-mid) 60%, var(--chrome-dark));
  border: 2px solid;
  border-color: var(--border-light) var(--border-dark) var(--border-dark) var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
}
.back-to-top.hidden { display: none !important; }
.back-to-top:hover { filter: brightness(1.08); }
.back-to-top:active {
  border-color: var(--border-dark) var(--border-light) var(--border-light) var(--border-dark);
}

/* ==================== 响应式 ==================== */
@media (max-width: 1279px) {
  .link-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1023px) {
  .layout { grid-template-columns: 170px minmax(0, 1fr); }
  .link-list { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 10px;
    gap: 12px;
  }
  .sidebar {
    position: static;
    max-height: none;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 6px;
  }
  .category-nav { 
    flex-direction: row; 
    gap: 6px; /* 稍微拉开一点间距 */
    padding-bottom: 4px; /* 避免滚动条贴底 */
  }
  .nav-link {
    padding: 5px 9px;
    font-size: 13px;
	flex-shrink: 0; /* 👈 加上这一行 */
  }
  .nav-count { font-size: 10px; }
  .sidebar-note { display: none; }

  .topbar { gap: 8px; padding: 8px 10px; }
  .clock { gap: 6px; }
  .clock .date { display: none; }
  .topbar-actions { margin-left: 0; }
  .search-engine {
    order: 3;
    flex-basis: 100%;
    max-width: none;
    min-width: 0;
  }

  .link-url { display: none; }
  .window-title { font-size: 11px; }

  .back-to-top {
    right: 12px;
    bottom: 12px;
    width: 38px;
    height: 38px;
  }
  
    /* 手机端终端友链：允许换行，完整显示描述 */
  .terminal {
    font-size: 12px;
  }
  .terminal-link {
    flex-wrap: wrap;
    align-items: flex-start;
    row-gap: 3px;
    padding: 8px 0 8px 2px;
  }
  .terminal-url {
    max-width: 100%;
    white-space: normal;
    word-break: break-all;
    flex: 1 1 auto;
  }
  .terminal-desc {
    flex: 1 0 100%;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    padding-left: 22px;
    line-height: 1.5;
  }
}

/* ==================== 减少动态效果 ==================== */
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
  .terminal-cursor { animation: none; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

@media (max-width: 767px) {
  .topbar { gap: 6px; padding: 8px 10px; }
  .clock { font-size: 12px; gap: 4px; }
  .time { font-size: 9px; }
  .topbar-actions { gap: 4px; }
  .topbar-actions .btn { padding: 4px 7px; font-size: 11px; }
  .search-engine { gap: 0; }
  .engine-select {
    min-width: 0;
    max-width: 84px;
    flex-shrink: 1;
    padding: 5px 6px;
    font-size: 12px;
  }
  .engine-input { font-size: 13px; padding: 5px 6px; }
  .search-engine .btn { padding: 5px 8px; font-size: 12px; }
  .filter-pop { right: -6px; }
}

@media (max-width: 767px) {
  /* 1. 允许右侧按钮换行，防止被切掉 */
  .topbar { gap: 6px; padding: 8px 10px; flex-wrap: wrap; }
  .topbar-actions { 
    flex-wrap: wrap; 
    justify-content: flex-end; 
    gap: 4px; 
    margin-left: auto; 
  }
  .clock { font-size: 12px; gap: 4px; }
  .time { font-size: 9px; }
  .topbar-actions .btn { padding: 4px 7px; font-size: 11px; }

  /* 2. 下拉过滤框改为固定定位 */
  .filter-pop {
    position: fixed;
    top: 85px; /* 在顶栏下方 */
    left: 10px;
    right: 10px;
    width: auto;
    max-width: none;
  }
  .filter-pop::before { display: none; }

  /* 3. 搜索引擎独占一行 */
  .search-engine { 
    order: 3; 
    flex-basis: 100%; 
    max-width: none; 
    min-width: 0; 
    gap: 0; 
    margin-top: 6px; 
  }
  .engine-select { 
    min-width: 0; 
    max-width: 84px; 
    flex-shrink: 1; 
    padding: 5px 6px; 
    font-size: 12px; 
  }
  .engine-input { font-size: 13px; padding: 5px 6px; }
  .search-engine .btn { padding: 5px 8px; font-size: 12px; }
}