/* ========================================================
   律兜律师培训系统 - 主样式（深蓝玻璃科技风）
   ======================================================== */
:root {
  --primary: #2b5fed;
  --primary-dark: #0a1840;
  --primary-light: #4d7cff;
  --accent: #00d4ff;
  --accent-2: #7b5cff;
  --bg-base: #0a1535;
  --bg-deep: #060e26;
  --glass: rgba(255, 255, 255, 0.07);
  --glass-strong: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.14);
  --text: #ffffff;
  --text-muted: #bcd0f0;
  --text-dim: #8fa3c9;
  --success: #2dd4a7;
  --danger: #ff5c7c;
  --warning: #ffb547;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  --accent-gold: #ffc857;
  --accent-cyan: #22d3ee;
  --accent-indigo: #818cf8;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  /* 全局深色模式：防止原生控件（select/option/date/datetime等）白底白字 */
  color-scheme: dark;
}

* { box-sizing: border-box; }

/* 所有原生表单控件一律走深色渲染，彻底避免白底黑字看不清 */
html, body, form, input, textarea, select, button, optgroup, option,
datalist, output, fieldset, legend, ::placeholder, input::placeholder,
textarea::placeholder, select::placeholder {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--bg-base);
  position: relative;
  overflow-x: hidden;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- 流光背景 v2 - 更高级的层次 ---------- */
.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1400px 900px at 8% 8%, rgba(43, 95, 237, 0.40), transparent 55%),
    radial-gradient(1100px 800px at 92% 18%, rgba(0, 212, 255, 0.28), transparent 55%),
    radial-gradient(1200px 1000px at 50% 95%, rgba(123, 92, 255, 0.30), transparent 55%),
    radial-gradient(600px 600px at 80% 75%, rgba(34, 211, 238, 0.12), transparent 60%),
    linear-gradient(165deg, #040820 0%, #060e26 30%, #0a1535 60%, #0e1d4a 100%);
}
.aurora-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 25%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 25%, transparent 75%);
  opacity: 0.6;
}
.aurora-bg::after {
  content: "";
  position: absolute;
  inset: -25%;
  background:
    radial-gradient(closest-side, rgba(0, 212, 255, 0.12), transparent) 25% 35% / 700px 700px no-repeat,
    radial-gradient(closest-side, rgba(123, 92, 255, 0.12), transparent) 75% 65% / 600px 600px no-repeat,
    radial-gradient(closest-side, rgba(45, 212, 167, 0.06), transparent) 50% 80% / 500px 500px no-repeat;
  filter: blur(50px);
  animation: drift 22s ease-in-out infinite alternate;
}
@keyframes drift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(20px, -15px) scale(1.03); }
  100% { transform: translate(40px, -30px) scale(1.06); }
}

/* ---------- 文字渲染优化 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

::selection {
  background: rgba(0, 212, 255, 0.3);
  color: #fff;
}

/* ---------- 玻璃容器 ---------- */
.glass {
  background: var(--glass);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}
.glass:hover {
  border-color: rgba(0, 212, 255, 0.25);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 212, 255, 0.08);
}
.glass-card {
  background: var(--glass);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 24px;
  position: relative;
  overflow: hidden;
}
.glass-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.4), transparent);
  opacity: 0.5;
  pointer-events: none;
}

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 1020;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: rgba(8, 16, 42, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
}
.topbar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: 1px;
}
.topbar .brand .logo-dot {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  display: grid; place-items: center;
  color: #06122c; font-weight: 800;
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.4);
}
.topbar .nav-links { display: flex; gap: 6px; align-items: center; }
.topbar .nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 15px;
  transition: all .2s;
}
.topbar .nav-links a:hover,
.topbar .nav-links a.active {
  color: #fff;
  background: var(--glass-strong);
}
.topbar .user-chip {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 12px;
  border-radius: 30px;
  background: var(--glass-strong);
}
.topbar .user-chip .avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-2), var(--primary));
  display: grid; place-items: center; color: #fff; font-weight: 700;
}

/* ---------- 管理端侧边栏 ---------- */
.admin-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: rgba(8, 16, 42, 0.82);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--glass-border);
  padding: 18px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar .side-brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 700; color: #fff;
  padding: 8px 10px 18px;
}
.sidebar .side-section { font-size: 12px; color: var(--text-muted); padding: 14px 12px 6px; letter-spacing: 1px; }
.sidebar a.side-link {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-muted);
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 2px;
  font-size: 14.5px;
  transition: all .2s;
}
.sidebar a.side-link i { font-size: 18px; }
.sidebar a.side-link:hover { color: #fff; background: var(--glass-strong); }
.sidebar a.side-link.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(43,95,237,0.55), rgba(0,212,255,0.25));
  border: 1px solid var(--glass-border);
}
.admin-main { flex: 1; padding: 26px; min-width: 0; }

/* ---------- 内容区 ---------- */
.page-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--glass-border);
}
.page-head h1 { font-size: 22px; font-weight: 700; margin: 0; letter-spacing: 0.5px; }
.page-head .sub { color: var(--text-muted); font-size: 13px; margin-top: 5px; }

.content-wrap { max-width: 1180px; margin: 0 auto; padding: 30px 20px 60px; }

/* ---------- 表单 ---------- */
.form-control, .form-select, .form-control:disabled {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 14px;
}
.form-control::placeholder { color: #9fb0d8; opacity: 0.75; }
.form-control:focus {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary-light);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(43, 95, 237, 0.18);
}
.form-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%239fb0d8'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 12px;
  padding-right: 34px;
  color-scheme: dark;
}
.form-select option,
.form-select optgroup {
  background-color: #0d1a3d;
  color: #eaf0ff;
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.5;
}
.form-select option:hover {
  background-color: #1a2f6a;
  color: #fff;
}
.form-select option:checked {
  background: linear-gradient(135deg, #2b5fed, #00d4ff);
  color: #fff;
}
.form-select:focus {
  background-color: #0d1a3d;
}

/* 全局 select 深色模式支持 */
select, select.form-select {
  color-scheme: dark;
}
.form-select[multiple] {
  padding: 8px;
  min-height: 120px;
}
.form-select[multiple] option {
  padding: 8px 12px;
  border-radius: 6px;
  margin: 2px 0;
}
.form-select[multiple] option:checked {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
}
.form-label { color: var(--text); font-weight: 500; margin-bottom: 6px; }
textarea.form-control { min-height: 120px; }
.form-text { color: var(--text-muted); }

/* ---------- 按钮 ---------- */
.btn {
  border-radius: 12px;
  font-weight: 600;
  padding: 9px 18px;
  transition: all 0.3s var(--ease-out);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.02em;
}
.btn-primary {
  background: linear-gradient(135deg, #2b5fed, #4d7cff);
  border: none;
  box-shadow: 0 6px 20px rgba(43, 95, 237, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  color: #fff;
}
.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 10px 28px rgba(43, 95, 237, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}
.btn-primary:hover::after {
  left: 100%;
}
.btn-outline-info {
  border: 1px solid var(--glass-border);
  color: var(--text);
  background: var(--glass);
}
.btn-outline-info:hover {
  background: var(--glass-strong);
  color: #fff;
  border-color: rgba(0, 212, 255, 0.3);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}
.btn-ghost:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 212, 255, 0.25);
}

/* ---------- 表格 ---------- */
.table { color: var(--text); background: transparent !important; margin-bottom: 0; }
.table > :not(caption) > * > * {
  background-color: transparent !important;
  color: var(--text);
}
.table thead th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--glass-border);
  background: rgba(255,255,255,0.04) !important;
  padding: 12px 14px;
  white-space: nowrap;
}
.table td, .table th {
  border-color: rgba(255,255,255,0.06);
  vertical-align: middle;
  padding: 10px 14px;
}
.table-hover tbody tr:hover { background: rgba(255,255,255,0.05) !important; }
.table tbody td .small,
.table tbody td small { color: rgba(234,240,255,0.85); }
.table tbody tr { transition: background 0.15s; }

/* ---------- 标签 / 徽章 ---------- */
.badge { font-weight: 500; padding: 5px 10px; border-radius: 8px; }
.badge-success { background: rgba(45, 212, 167, 0.18); color: #2dd4a7; }
.badge-warning { background: rgba(255, 181, 71, 0.18); color: #ffb547; }
.badge-danger  { background: rgba(255, 92, 124, 0.18); color: #ff5c7c; }
.badge-info    { background: rgba(0, 212, 255, 0.18); color: var(--accent); }
.badge-muted   { background: rgba(255,255,255,0.10); color: var(--text); }
.badge-primary {
  background: linear-gradient(135deg, rgba(43,95,237,0.25), rgba(123,92,255,0.25));
  color: #eaf0ff;
  border: 1px solid rgba(123,160,255,0.35);
}

/* ---------- 登录/注册卡片 ---------- */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: 100%; max-width: 440px; padding: 38px 34px; }
.auth-card .auth-title { font-size: 26px; font-weight: 700; text-align: center; margin-bottom: 4px; }
.auth-card .auth-sub { color: var(--text-muted); text-align: center; margin-bottom: 26px; font-size: 14px; }
.auth-card .brand-line { display: flex; align-items: center; gap: 10px; justify-content: center; margin-bottom: 22px; }

/* ---------- 消息提示 ---------- */
.alert {
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}
.alert-success { background: rgba(45,212,167,0.15); color: var(--success); }
.alert-danger  { background: rgba(255,92,124,0.15); color: var(--danger); }
.alert-warning { background: rgba(255,181,71,0.15); color: var(--warning); }
.alert-info    { background: rgba(0,212,255,0.12); color: var(--accent); }

/* ---------- 统计卡片 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.stat-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  backdrop-filter: blur(16px);
}
.stat-card .stat-label { color: var(--text-muted); font-size: 14px; }
.stat-card .stat-value { font-size: 32px; font-weight: 700; margin-top: 6px; }
.stat-card .stat-icon { font-size: 30px; opacity: .8; }

/* ---------- 工具类 ---------- */
.text-muted-2 { color: var(--text-muted) !important; }
.link-info { color: var(--accent); text-decoration: none; }
.link-info:hover { color: var(--primary-light); }
.cursor-pointer { cursor: pointer; }
.divider { height: 1px; background: var(--glass-border); margin: 18px 0; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }

/* ========================================================
   移动端响应式适配
   ======================================================== */

/* --- 移动端基础优化 --- */
@media (max-width: 768px) {
  body { font-size: 14px; }

  /* 通用容器适配 */
  .content-wrap { padding: 16px 12px 40px; }

  /* 顶部导航 */
  .topbar {
    padding: 10px 14px;
    flex-wrap: wrap;
    gap: 8px;
  }
  .topbar .brand { font-size: 16px; }
  .topbar .nav-links {
    order: 3;
    width: 100%;
    overflow-x: auto;
    gap: 2px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .topbar .nav-links::-webkit-scrollbar { display: none; }
  .topbar .nav-links a {
    padding: 6px 10px;
    font-size: 13px;
    white-space: nowrap;
  }
  .topbar .user-chip { padding: 4px 8px; }
  .topbar .user-chip .avatar { width: 28px; height: 28px; font-size: 12px; }

  /* 统计卡片 */
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-card .stat-value { font-size: 22px; }
  .stat-card .stat-label { font-size: 12px; }

  /* 页面标题 */
  .page-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .page-head h1 { font-size: 20px; }

  /* 玻璃卡片 */
  .glass-card { padding: 16px; }

  /* 表格横向滚动 */
  .table-responsive,
  .table-responsive table,
  .table {
    font-size: 13px;
  }
  .table thead th,
  .table tbody td {
    padding: 8px 10px !important;
    white-space: nowrap;
  }

  /* 按钮响应 */
  .btn { padding: 8px 14px; font-size: 14px; }
  .btn-lg { padding: 10px 20px; font-size: 15px; }

  /* 表单适配 */
  .form-control, .form-select {
    padding: 10px 12px;
    font-size: 15px;
  }

  /* 登录注册卡片 */
  .auth-wrap { padding: 16px; }
  .auth-card { padding: 24px 20px; max-width: 100%; }
  .auth-card .auth-title { font-size: 22px; }
  .auth-card .auth-sub { font-size: 13px; margin-bottom: 20px; }

  /* 门户首页 */
  .portal-hero { padding: 60px 0 30px; min-height: auto; }
  .portal-section { padding: 36px 14px; }
  .portal-title { font-size: 32px !important; }
  .portal-sub { font-size: 14px !important; }
  .feature-card { padding: 18px 14px; }
  .feature-icon { width: 52px; height: 52px; font-size: 24px; }
  .process-step { padding: 16px; }
  .step-num { font-size: 32px; top: 8px; right: 10px; }
  .portal-section-head h2 { font-size: 22px; }
  .portal-cta-box { padding: 32px 18px; }
  .portal-footer { padding: 18px 14px 30px; }
  .portal-footer .d-flex { flex-direction: column; gap: 8px; text-align: center; }

  /* 题目表单 */
  .section-card { padding: 12px 14px; margin-bottom: 8px; }
  .section-title { font-size: 14px; margin-bottom: 10px; padding-bottom: 6px; }

  /* 考试答题页 */
  .exam-timer {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    border-radius: 0;
    border: none;
    border-top: 1px solid var(--glass-border);
    justify-content: space-between;
  }
  .exam-question { padding: 16px; }
  .exam-question h3 { font-size: 16px; }

  /* 标签选择器 */
  .tag-options { grid-template-columns: 1fr; }
  .tag-option { padding: 10px; font-size: 14px; }
}

/* --- 小屏手机 (<480px) --- */
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .portal-title { font-size: 26px !important; }
  .btn-lg { width: 100%; }
  .row.g-3 > [class*="col-"] { padding-left: 8px; padding-right: 8px; }
}

/* --- 管理后台侧边栏移动端折叠 --- */
.admin-shell .sidebar {
  transition: transform 0.3s ease;
}
@media (max-width: 768px) {
  .admin-shell { position: relative; }
  .admin-shell .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1050;
    transform: translateX(-100%);
    width: 220px;
    box-shadow: 4px 0 20px rgba(0,0,0,0.5);
  }
  .admin-shell .sidebar.open { transform: translateX(0); }
  .admin-main { padding: 16px 14px; width: 100%; }
  .admin-main .page-head h1 { font-size: 18px; }

  /* 侧边栏遮罩 */
  .sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1040;
    display: none;
  }
  .sidebar-backdrop.show { display: block; }
}

/* --- 汉堡菜单按钮（移动端显示） --- */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
}
.mobile-menu-btn i { font-size: 20px; }
@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
}

/* --- 律师端侧边导航移动端滚动优化 --- */
@media (max-width: 768px) {
  .topbar .nav-links {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
  }
}

/* --- 触摸设备优化 --- */
@media (hover: none) {
  .btn:hover { filter: none; }
  .feature-card:hover { transform: none; }
  .table-hover tbody tr:hover { background: transparent !important; }
  .tag-option:hover { background: rgba(255,255,255,0.04); }
}

/* --- 安全区适配（iPhone刘海屏） --- */
@supports (padding: max(0px)) {
  @media (max-width: 768px) {
    .topbar {
      padding-left: max(14px, env(safe-area-inset-left));
      padding-right: max(14px, env(safe-area-inset-right));
    }
    .content-wrap {
      padding-bottom: max(40px, env(safe-area-inset-bottom));
    }
  }
}

/* --- 表格移动端卡片化 --- */
@media (max-width: 768px) {
  .table-mobile-stack thead { display: none; }
  .table-mobile-stack tbody tr {
    display: block;
    margin-bottom: 12px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px 14px;
    background: var(--glass);
  }
  .table-mobile-stack tbody td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0 !important;
    border: none !important;
    gap: 10px;
  }
  .table-mobile-stack tbody td::before {
    content: attr(data-label);
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    flex-shrink: 0;
  }
}

/* --- 表格容器移动端优化 --- */
@media (max-width: 768px) {
  .table-responsive {
    -webkit-overflow-scrolling: touch;
    overflow-x: auto;
    border-radius: 10px;
    border: 1px solid var(--glass-border);
    background: rgba(255,255,255,0.03);
    padding: 4px;
  }
  .table-responsive::-webkit-scrollbar { height: 4px; }
  .table-responsive::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.15);
    border-radius: 2px;
  }
  .table-responsive .table { min-width: 600px; }

  /* 管理后台移动端防横向溢出 */
  .admin-main .row { --bs-gutter-x: 10px; }
  .admin-main .row > [class*="col-"] { padding-left: 6px; padding-right: 6px; }
  .admin-main .col-md-6,
  .admin-main .col-lg-3,
  .admin-main .col-lg-4,
  .admin-main .col-lg-8 {
    margin-bottom: 10px;
  }

  /* 表单卡片移动端间距 */
  .admin-main .glass-card { padding: 14px; }

  /* 统计卡片网格在管理后台 */
  .admin-main .stat-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  /* 管理页面按钮组纵向堆叠 */
  .admin-main .page-head .btn,
  .admin-main .mb-3 .btn {
    padding: 8px 12px;
    font-size: 13px;
  }
}

/* --- 全局触摸优化 --- */
@media (hover: none) and (max-width: 768px) {
  /* 增加可点击区域 */
  .btn,
  .form-check-input,
  .tag-option,
  .nav-links a,
  .side-link {
    min-height: 44px;
  }
  .form-check-input[type="radio"],
  .form-check-input[type="checkbox"] {
    width: 18px;
    height: 18px;
  }
}

/* --- 管理后台移动端安全区 --- */
@supports (padding: max(0px)) {
  @media (max-width: 768px) {
    .admin-mobile-bar {
      padding-left: max(14px, env(safe-area-inset-left));
      padding-right: max(14px, env(safe-area-inset-right));
      padding-top: max(10px, env(safe-area-inset-top));
    }
    .admin-main {
      padding-bottom: max(40px, env(safe-area-inset-bottom));
    }
  }
}

/* ========================================================
   科技感增强样式 - 高级玻璃拟态 + 动态光效
   ======================================================== */

/* ---------- 增强版玻璃卡片 ---------- */
.glass-card-tech {
  position: relative;
  background: linear-gradient(135deg, rgba(15, 25, 55, 0.85), rgba(20, 35, 70, 0.75));
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  padding: 24px;
  overflow: hidden;
}

.glass-card-tech::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(0, 212, 255, 0.5), 
    rgba(123, 92, 255, 0.5), 
    transparent
  );
}

.glass-card-tech::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), 
    rgba(0, 212, 255, 0.08), 
    transparent 50%
  );
  pointer-events: none;
  transition: opacity 0.3s;
  opacity: 0;
}

.glass-card-tech:hover::after {
  opacity: 1;
}

/* ---------- 科技感动画边框 ---------- */
.tech-border {
  position: relative;
}

.tech-border::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(
    90deg,
    #00d4ff,
    #7b5cff,
    #00d4ff,
    #7b5cff
  );
  background-size: 300% 100%;
  z-index: -1;
  animation: borderFlow 4s linear infinite;
  filter: blur(4px);
  opacity: 0.6;
}

@keyframes borderFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

/* ---------- 增强版按钮 ---------- */
.btn-tech {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: linear-gradient(135deg, #2b5fed, #4d7cff);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 6px 20px rgba(43, 95, 237, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-tech::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.2), 
    transparent
  );
  transition: left 0.6s ease;
}

.btn-tech:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 10px 30px rgba(43, 95, 237, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-tech:hover::before {
  left: 100%;
}

.btn-tech-accent {
  background: linear-gradient(135deg, #00d4ff, #2b5fed);
  box-shadow: 
    0 6px 20px rgba(0, 212, 255, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-tech-accent:hover {
  box-shadow: 
    0 10px 30px rgba(0, 212, 255, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-tech-ghost {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: none;
}

.btn-tech-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: none;
}

/* ---------- 科技感标签/徽章 ---------- */
.badge-tech {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: #00d4ff;
}

.badge-tech-success {
  background: rgba(45, 212, 167, 0.15);
  border-color: rgba(45, 212, 167, 0.3);
  color: #2dd4a7;
}

.badge-tech-warning {
  background: rgba(255, 181, 71, 0.15);
  border-color: rgba(255, 181, 71, 0.3);
  color: #ffb547;
}

.badge-tech-danger {
  background: rgba(255, 92, 124, 0.15);
  border-color: rgba(255, 92, 124, 0.3);
  color: #ff5c7c;
}

/* ---------- 科技感输入框 ---------- */
.input-tech {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 14px 16px;
  color: #fff;
  transition: all 0.3s ease;
}

.input-tech:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: #00d4ff;
  box-shadow: 
    0 0 0 3px rgba(0, 212, 255, 0.15),
    0 0 20px rgba(0, 212, 255, 0.1);
  outline: none;
}

.input-tech::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

/* ---------- 卡片悬浮光效 ---------- */
.hover-glow {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-glow:hover {
  transform: translateY(-4px);
  box-shadow: 
    0 20px 50px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(0, 212, 255, 0.15);
}

/* ---------- 数据流动画 ---------- */
@keyframes dataFlow {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.data-flow-line {
  position: relative;
  height: 1px;
  overflow: hidden;
}

.data-flow-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    #00d4ff, 
    transparent
  );
  animation: dataFlow 2s linear infinite;
}

/* ---------- 脉冲光效 ---------- */
@keyframes pulseGlow {
  0%, 100% { 
    box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.4);
  }
  50% { 
    box-shadow: 0 0 0 12px rgba(0, 212, 255, 0);
  }
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00d4ff;
  animation: pulseGlow 2s infinite;
}

/* ---------- 文字渐变效果 ---------- */
.text-gradient {
  background: linear-gradient(135deg, #00d4ff, #7b5cff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-gold {
  background: linear-gradient(135deg, #ffd700, #ff8c42);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- 科技感分隔线 ---------- */
.tech-divider {
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(0, 212, 255, 0.4), 
    rgba(123, 92, 255, 0.4), 
    transparent
  );
  border: none;
  margin: 24px 0;
}

/* ---------- 3D悬浮效果 ---------- */
.tilt-card {
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tilt-card:hover {
  transform: perspective(1000px) rotateX(2deg) rotateY(-2deg) translateY(-4px);
}

/* ---------- 进度条增强 ---------- */
.progress-tech {
  position: relative;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}

.progress-tech-fill {
  position: relative;
  height: 100%;
  background: linear-gradient(90deg, #00d4ff, #2b5fed);
  border-radius: 4px;
  transition: width 0.8s ease;
}

.progress-tech-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.3), 
    transparent
  );
  animation: dataFlow 2s linear infinite;
}

.progress-tech-glow {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.8), transparent);
  filter: blur(4px);
}

/* ---------- 加载骨架屏 ---------- */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0.05) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* ---------- 呼吸灯效果 ---------- */
@keyframes breathe {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.breathe {
  animation: breathe 3s ease-in-out infinite;
}

/* ---------- 浮动动画 ---------- */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.float {
  animation: float 4s ease-in-out infinite;
}

/* ---------- 旋转光效 ---------- */
@keyframes rotateGlow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.rotate-glow {
  animation: rotateGlow 8s linear infinite;
}

/* ---------- 抖动提示 ---------- */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.shake {
  animation: shake 0.4s ease-in-out;
}

/* ---------- 科技感列表 ---------- */
.tech-list-item {
  position: relative;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.tech-list-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateX(4px);
}

.tech-list-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 0;
  background: linear-gradient(180deg, #00d4ff, #7b5cff);
  border-radius: 2px;
  transform: translateY(-50%);
  transition: height 0.3s ease;
}

.tech-list-item:hover::before {
  height: 60%;
}

/* ---------- 响应式科技感样式 ---------- */
@media (max-width: 768px) {
  .glass-card-tech {
    padding: 18px;
    border-radius: 16px;
  }
  
  .btn-tech {
    padding: 10px 20px;
    font-size: 13px;
  }
  
  .tilt-card:hover {
    transform: translateY(-2px);
  }
}