/* ============================================================
   爱搜资源 · 服务导航站 — 极客磨砂设计系统 v3 (Aurora Glass)
   品牌统一：与 isoziyuan.com 博客一脉相承的极光靛蓝深色磨砂语言
   ============================================================ */

:root {
  color-scheme: dark;
  /* 表面与玻璃 */
  --bg-primary: #070a12;
  --bg-surface: rgba(17, 24, 39, 0.62);
  --bg-surface-hover: rgba(30, 41, 59, 0.78);
  --bg-sidebar: rgba(11, 16, 28, 0.82);
  --bg-elevated: rgba(15, 22, 38, 0.92);
  /* 边框 */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-soft: rgba(255, 255, 255, 0.055);
  --border-focus: rgba(99, 102, 241, 0.55);
  /* 文本 */
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-sub: #64748b;
  /* 强调 */
  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --accent-3: #38bdf8;
  --accent-glow: rgba(99, 102, 241, 0.28);
  --badge-bg: rgba(99, 102, 241, 0.16);
  --badge-text: #a5b4fc;
  --tag-bg: rgba(255, 255, 255, 0.055);
  /* 阴影三级体系 */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px -6px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 24px 60px -12px rgba(0, 0, 0, 0.55);
  --card-shadow: var(--shadow-md);
  /* 兼容旧变量（联系弹窗等引用） */
  --surface-color: var(--bg-elevated);
  --bg-color: rgba(10, 15, 26, 0.85);
  /* 渐变能量条 */
  --energy-gradient: linear-gradient(90deg, #6366f1, #8b5cf6 55%, #38bdf8);
  --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
}

[data-theme="light"] {
  color-scheme: light;
  --bg-primary: #f4f6fb;
  --bg-surface: rgba(255, 255, 255, 0.78);
  --bg-surface-hover: #ffffff;
  --bg-sidebar: rgba(248, 250, 253, 0.85);
  --bg-elevated: rgba(255, 255, 255, 0.96);
  --border-color: rgba(15, 23, 42, 0.09);
  --border-soft: rgba(15, 23, 42, 0.06);
  --border-focus: rgba(79, 70, 229, 0.45);
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-sub: #94a3b8;
  --accent: #4f46e5;
  --accent-2: #7c3aed;
  --accent-glow: rgba(79, 70, 229, 0.16);
  --badge-bg: rgba(79, 70, 229, 0.1);
  --badge-text: #4f46e5;
  --tag-bg: rgba(15, 23, 42, 0.045);
  --shadow-md: 0 8px 24px -6px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 24px 60px -12px rgba(15, 23, 42, 0.16);
  --card-shadow: var(--shadow-md);
  --surface-color: #ffffff;
  --bg-color: #f1f4f9;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  /* 极光氛围背景（固定不随滚动） */
  background-image:
    radial-gradient(circle at 86% -8%, rgba(99, 102, 241, 0.16), transparent 42%),
    radial-gradient(circle at -10% 30%, rgba(139, 92, 246, 0.1), transparent 38%),
    radial-gradient(circle at 55% 115%, rgba(56, 189, 248, 0.07), transparent 40%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

/* ============ 侧边栏 ============ */
.sidebar {
  width: 260px;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  background: var(--bg-sidebar);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-right: 1px solid var(--border-color);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  z-index: 50;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 20px;
  box-shadow: 0 6px 18px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.brand-title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(120deg, var(--text-main) 40%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
}
.nav-links:hover { scrollbar-color: var(--border-color) transparent; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 11px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 550;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.nav-item:hover {
  color: var(--text-main);
  background: var(--tag-bg);
  transform: translateX(2px);
}

.nav-item.active {
  color: #fff;
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.28), rgba(99, 102, 241, 0.07));
  border-color: rgba(129, 140, 248, 0.35);
  box-shadow: 0 4px 14px var(--accent-glow);
}
[data-theme="light"] .nav-item.active { color: var(--accent); }

/* ============ 主内容区 ============ */
.main-content {
  margin-left: 260px;
  flex: 1;
  padding: 32px 48px;
  max-width: 1440px;
  width: calc(100% - 260px);
}

/* ============ 顶部悬浮搜索胶囊 ============ */
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
  position: sticky;
  top: 16px;
  z-index: 40;
  background: var(--bg-surface);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  padding: 12px 20px;
  border-radius: 18px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  max-width: 580px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 11px 44px 11px 42px;
  background: var(--tag-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.search-input::placeholder { color: var(--text-sub); }

.search-input:focus {
  border-color: var(--border-focus);
  background: var(--bg-surface-hover);
  box-shadow: 0 0 0 4px var(--accent-glow), 0 0 24px var(--accent-glow);
}

.search-icon {
  position: absolute;
  left: 14px;
  color: var(--text-sub);
  pointer-events: none;
}

.shortcut-badge {
  position: absolute;
  right: 12px;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--tag-bg);
  border: 1px solid var(--border-color);
  color: var(--text-sub);
  font-weight: 650;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle-btn, .mobile-menu-btn {
  background: var(--tag-bg);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover, .mobile-menu-btn:hover {
  background: var(--bg-surface-hover);
  border-color: rgba(129, 140, 248, 0.4);
}

.mobile-menu-btn { display: none; }

/* ============ 分类区 ============ */
.category-section {
  margin-bottom: 48px;
  scroll-margin-top: 100px;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--accent);
}

.category-title {
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -0.3px;
  color: var(--text-main);
}

.category-count {
  font-size: 12px;
  background: var(--badge-bg);
  color: var(--badge-text);
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid rgba(129, 140, 248, 0.3);
  font-weight: 700;
}

/* ============ 工具卡片网格 ============ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.tool-card {
  position: relative;
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform 0.22s cubic-bezier(0.34, 1.4, 0.64, 1), box-shadow 0.22s ease, border-color 0.22s ease;
}

/* 顶部三色渐变能量条 */
.tool-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2.5px;
  background: var(--energy-gradient);
  opacity: 0;
  transition: opacity 0.22s ease;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: rgba(129, 140, 248, 0.4);
  box-shadow: 0 16px 36px -8px rgba(0, 0, 0, 0.45), 0 0 28px var(--accent-glow);
}
.tool-card:hover::before { opacity: 1; }

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 12px;
}

.tool-avatar {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.tool-avatar img {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
}

.tool-info {
  flex: 1;
  min-width: 0;
}

.tool-name-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.tool-name {
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tool-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-weight: 650;
  flex-shrink: 0;
  border: 1px solid rgba(129, 140, 248, 0.28);
}

.tool-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
  flex: 1;
}

.tool-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-soft);
  padding-top: 11px;
  margin-top: auto;
}

.tag-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag-item {
  font-size: 11px;
  padding: 2.5px 8px;
  background: var(--tag-bg);
  border-radius: 999px;
  color: var(--text-sub);
  border: 1px solid var(--border-soft);
}

.link-arrow {
  color: var(--text-sub);
  opacity: 0.6;
  transition: opacity 0.2s, transform 0.2s;
}

.tool-card:hover .link-arrow {
  opacity: 1;
  transform: translate(2px, -2px);
  color: var(--accent-3);
}

/* ============ 空状态 ============ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-sub);
  display: none;
}

/* ============ 联系弹窗（磨砂玻璃） ============ */
[hidden] { display: none !important; }

.contact-top-btn {
  border: 1px solid var(--border-color);
  background: var(--tag-bg);
  color: var(--text-main);
  border-radius: 10px;
  padding: 9px 14px;
  cursor: pointer;
  font-size: 13px;
  transition: 0.2s ease;
}
.contact-top-btn:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 16px var(--accent-glow); }

.mobile-bottom-nav { display: none; }

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: end center;
  padding: 20px;
  background: rgba(4, 8, 18, 0.66);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.contact-card {
  position: relative;
  width: min(460px, 100%);
  padding: 28px;
  border: 1px solid var(--border-color);
  border-radius: 22px;
  background: var(--bg-elevated);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--shadow-xl), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  animation: contact-rise 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes contact-rise {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.contact-kicker { color: var(--accent); font-size: 11px; font-weight: 750; letter-spacing: .16em; }
.contact-card h2 { margin: 8px 0 8px; font-size: 24px; letter-spacing: -0.02em; }
.contact-card p { margin: 0 0 20px; color: var(--text-muted); line-height: 1.7; }
.contact-close { position: absolute; top: 14px; right: 16px; width: 32px; height: 32px; border: 0; background: transparent; color: var(--text-sub); font-size: 26px; cursor: pointer; border-radius: 8px; transition: 0.15s; }
.contact-close:hover { color: var(--text-main); background: var(--tag-bg); }
.contact-list { display: grid; gap: 10px; }
.contact-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 14px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--tag-bg);
  color: var(--text-main);
  overflow-wrap: anywhere;
}
.contact-row a { color: var(--accent); text-decoration: none; text-align: right; font-weight: 600; }
.contact-label { color: var(--text-muted); font-size: 13px; }
.contact-empty { padding: 16px; border-radius: 12px; background: var(--tag-bg); color: var(--text-muted); text-align: center; }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-xl); }
  .main-content {
    margin-left: 0;
    width: 100%;
    padding: 20px 16px 28px;
  }
  .mobile-menu-btn { display: flex; }
  .tools-grid { grid-template-columns: 1fr; gap: 14px; }
  .header-bar { top: 10px; margin-bottom: 24px; padding: 10px 12px; border-radius: 14px; }
  body { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
  .contact-top-btn { display: none; }
  .mobile-bottom-nav {
    position: fixed;
    right: 0; bottom: 0; left: 0;
    z-index: 80;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--border-color);
    background: var(--bg-sidebar);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
  .bottom-nav-item {
    display: grid;
    justify-items: center;
    gap: 3px;
    border: 0;
    background: transparent;
    color: var(--text-muted);
    font-size: 11px;
    cursor: pointer;
    padding: 4px 0;
    border-radius: 10px;
    transition: color 0.15s;
  }
  .bottom-nav-item.active { color: var(--accent); }
  .bottom-nav-icon { font-size: 22px; line-height: 1; }
  .contact-modal { padding: 12px; }
  .contact-card { padding: 24px 18px 18px; border-radius: 18px; }
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}