/* ======================================================================
 * 新郑航空科技中等专业学校 · 教学管理系统
 * 统一设计语言（旗舰版 / Top-Spec Design System）
 * 说明：本文件承载 Tailwind 工具类之外的「语义组件」样式，
 *       通过语义类名（.sidebar / .kpi / .panel / .btn-* 等）统一抬升所有页面。
 * ====================================================================== */

:root {
  /* 品牌色 */
  --brand-50:  #eff6ff;
  --brand-100: #dbeafe;
  --brand-200: #bfdbfe;
  --brand-400: #60a5fa;
  --brand-500: #3b82f6;
  --brand-600: #2563eb;
  --brand-700: #1d4ed8;
  --sky-400:   #38bdf8;
  --sky-500:   #0ea5e9;
  --ink-900:   #0b1220;
  --ink-800:   #0e1c3a;
  --ink-700:   #0d2147;

  /* 中性与表面 */
  --surface:  #ffffff;
  --canvas:   #eef2f9;
  --line:     rgba(15, 23, 42, 0.08);
  --line-soft:rgba(15, 23, 42, 0.05);

  /* 投影（分层柔和） */
  --shadow-sm:  0 1px 2px rgba(16, 24, 40, .05), 0 2px 8px -4px rgba(16, 24, 40, .08);
  --shadow-md:  0 1px 2px rgba(16, 24, 40, .05), 0 12px 32px -12px rgba(16, 24, 40, .16);
  --shadow-lg:  0 1px 3px rgba(16, 24, 40, .06), 0 24px 60px -20px rgba(16, 24, 40, .28);
  --shadow-glow:0 14px 34px -12px rgba(37, 99, 235, .45);

  --radius: 16px;
  --radius-sm: 12px;

  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { font-family: var(--font-sans); }

/* 应用画布：极淡的航空蓝渐变，让白卡更立体 */
body { background: var(--canvas); }
#app > .flex.h-screen { background:
  radial-gradient(1200px 600px at 80% -10%, rgba(56, 130, 246, .10), transparent 60%),
  radial-gradient(900px 500px at -10% 110%, rgba(14, 165, 233, .08), transparent 55%),
  var(--canvas);
}

/* ========================== 侧边栏 ========================== */
.sidebar {
  background:
    radial-gradient(120% 60% at 50% -10%, rgba(56, 130, 246, .28), transparent 55%),
    linear-gradient(180deg, #0a0f1f 0%, #0e1c3a 48%, #0d2147 100%);
  position: relative;
  overflow: hidden;
}
.sidebar::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.06), transparent 30%);
  pointer-events: none;
}
.sidebar .nav-section-label {
  padding: 0 .9rem;
  margin: 1.15rem 0 .5rem;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: rgba(148, 174, 214, .65);
  text-transform: uppercase;
}
.sidebar .nav-section-label:first-child { margin-top: 0; }

.sidebar .nav-item {
  position: relative; z-index: 1;
  display: flex; align-items: center; gap: .85rem;
  padding: .72rem .9rem;
  border-radius: var(--radius-sm);
  color: #aebbd4;
  font-size: .93rem;
  font-weight: 500;
  cursor: pointer;
  margin-bottom: .28rem;
  border: 1px solid transparent;
  transition: all .22s cubic-bezier(.4, 0, .2, 1);
}
.sidebar .nav-item .ico {
  width: 2.1rem; height: 2.1rem; flex: none;
  display: flex; align-items: center; justify-content: center;
  border-radius: .7rem;
  background: rgba(255, 255, 255, .06);
  font-size: 1.02rem;
  transition: all .22s cubic-bezier(.4, 0, .2, 1);
}
.sidebar .nav-item:hover {
  background: rgba(255, 255, 255, .07);
  color: #fff;
  transform: translateX(3px);
}
.sidebar .nav-item:hover .ico { background: rgba(255, 255, 255, .13); transform: scale(1.06); }
.sidebar .nav-item.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(37, 99, 235, .95) 0%, rgba(14, 165, 233, .9) 100%);
  border-color: rgba(255, 255, 255, .18);
  box-shadow: var(--shadow-glow), inset 0 1px 0 rgba(255, 255, 255, .22);
}
.sidebar .nav-item.active .ico {
  background: rgba(255, 255, 255, .22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .3);
}

/* ========================== 顶栏 ========================== */
.h-18 { height: 4.5rem; }
header.bg-white {
  background: rgba(255, 255, 255, .82) !important;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
}
header.bg-white { border-bottom: 1px solid var(--line) !important; }

/* ========================== 通用面板/卡片 ========================== */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 1.4rem 1.6rem;
}
.panel-title {
  display: flex; align-items: center; gap: .55rem;
  font-size: 1.02rem; font-weight: 700; color: #0f172a;
  margin-bottom: 1rem;
}
.panel-title::before {
  content: ""; width: 4px; height: 18px; border-radius: 9999px;
  background: linear-gradient(180deg, var(--brand-600), var(--sky-500));
}

/* 区块标题 */
.section-title {
  display: flex; align-items: center; gap: .5rem;
  font-size: 1.05rem; font-weight: 700; color: #0f172a;
  margin: 0 0 1rem;
}
.section-title::before {
  content: ""; width: 4px; height: 20px; border-radius: 9999px;
  background: linear-gradient(180deg, var(--brand-600), var(--sky-500));
}

/* ========================== 页面头部容器 ========================== */
.page-header-card {
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #f5faff 100%);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 1.4rem 2rem 1.4rem 2.3rem;
  margin-bottom: 1.5rem;
}
.page-header-card::before {
  content: "";
  position: absolute; left: .9rem; top: 1.3rem; bottom: 1.3rem;
  width: 5px; border-radius: 9999px;
  background: linear-gradient(180deg, var(--brand-600), var(--sky-500));
}

/* ========================== 统计/KPI 卡片 ========================== */
.stat-card {
  position: relative; overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 1.3rem 1.5rem;
  transition: box-shadow .25s ease, transform .25s ease;
}
.stat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.stat-card::after {
  content: ""; position: absolute; right: -30px; top: -30px;
  width: 110px; height: 110px; border-radius: 9999px;
  background: radial-gradient(circle, rgba(37, 99, 235, .12), transparent 70%);
  pointer-events: none;
}

.kpi {
  position: relative; overflow: hidden;
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  color: #fff;
  box-shadow: var(--shadow-md);
  transition: transform .25s ease, box-shadow .25s ease;
}
.kpi:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.kpi .kpi-ico {
  width: 3rem; height: 3rem; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  background: rgba(255, 255, 255, .18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .25);
}
.kpi .kpi-val { font-size: 2.1rem; font-weight: 800; line-height: 1.1; letter-spacing: -.02em; margin-top: .8rem; }
.kpi .kpi-label { font-size: .9rem; opacity: .92; margin-top: .15rem; font-weight: 500; }
.kpi .kpi-foot { font-size: .72rem; opacity: .8; margin-top: .5rem; }
.kpi.grad-blue  { background: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%); }
.kpi.grad-emerald{ background: linear-gradient(135deg, #059669 0%, #10b981 100%); }
.kpi.grad-violet{ background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%); }
.kpi.grad-amber { background: linear-gradient(135deg, #d97706 0%, #f59e0b 100%); }
.kpi.grad-rose  { background: linear-gradient(135deg, #e11d48 0%, #fb7185 100%); }
.kpi.grad-slate { background: linear-gradient(135deg, #334155 0%, #475569 100%); }

/* ========================== 快捷入口 ========================== */
.quick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1rem; }
.quick {
  display: flex; align-items: center; gap: .9rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all .22s ease;
}
.quick:hover { border-color: var(--brand-200); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.quick .q-ico {
  width: 2.6rem; height: 2.6rem; flex: none; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-600), var(--sky-500));
  box-shadow: var(--shadow-glow);
}
.quick .q-label { font-weight: 600; color: #1e293b; font-size: .92rem; }
.quick .q-sub { font-size: .72rem; color: #94a3b8; margin-top: .1rem; }

/* ========================== 表格 ========================== */
.overflow-x-auto.rounded-2xl { box-shadow: var(--shadow-md); }
table.min-w-full thead th {
  background: linear-gradient(180deg, #f8fafc 0%, #eef2f9 100%) !important;
  color: #475569;
  font-weight: 700;
  letter-spacing: .02em;
  border-bottom: 1px solid var(--line);
}
table.min-w-full tbody tr { transition: background-color .15s ease; }
table.min-w-full tbody tr:hover { background-color: #f5f9ff; }
table.min-w-full tbody tr:nth-child(even) { background-color: #fbfdff; }
table.min-w-full tbody tr:nth-child(even):hover { background-color: #f0f7ff; }

/* ========================== 表单输入 ========================== */
.ui-input {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: .65rem 1rem;
  font-size: .9rem;
  color: #334155;
  background: #fff;
  transition: all .2s ease;
}
.ui-input:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, .15);
}
select.ui-input { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.4rem; }

/* ========================== 按钮 ========================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .6rem 1.1rem;
  border-radius: 12px;
  font-size: .9rem; font-weight: 600;
  cursor: pointer; border: 1px solid transparent;
  transition: all .2s ease;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand-600), var(--sky-500));
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover { filter: brightness(1.06); transform: translateY(-1px); box-shadow: 0 18px 40px -12px rgba(37, 99, 235, .55); }
.btn-ghost { color: #475569; background: #fff; border-color: #e2e8f0; box-shadow: var(--shadow-sm); }
.btn-ghost:hover { background: #f8fafc; border-color: #cbd5e1; }
.btn-danger { color: #fff; background: linear-gradient(135deg, #e11d48, #fb7185); box-shadow: 0 14px 34px -12px rgba(225, 29, 72, .45); }
.btn-danger:hover { filter: brightness(1.05); }
.btn-sm { padding: .42rem .8rem; font-size: .82rem; border-radius: 10px; }

/* ========================== 徽章 ========================== */
.badge-soft { display: inline-flex; align-items: center; padding: .2rem .7rem; border-radius: 9999px; font-size: .72rem; font-weight: 600; }
.badge-blue   { background: #eff6ff; color: #1d4ed8; }
.badge-green  { background: #ecfdf5; color: #047857; }
.badge-red    { background: #fef2f2; color: #b91c1c; }
.badge-amber  { background: #fffbeb; color: #b45309; }
.badge-gray   { background: #f1f5f9; color: #475569; }
.badge-violet { background: #f5f3ff; color: #6d28d9; }
.badge-sky    { background: #ecfeff; color: #0e7490; }

/* ========================== 筛选区 ========================== */
.filter-bg {
  display: inline-flex; align-items: center; gap: .75rem; flex-wrap: wrap;
  background: linear-gradient(180deg, #ffffff, #f7fbff);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: .7rem 1rem;
  box-shadow: var(--shadow-sm);
}

/* ========================== 空状态 ========================== */
.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #94a3b8; padding: 3rem 1rem;
}
.empty-state svg { width: 3rem; height: 3rem; color: #cbd5e1; margin-bottom: .75rem; }

/* ========================== 滚动条 ========================== */
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: #c3cee0; border-radius: 6px; border: 2px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background: #94a3b8; background-clip: padding-box; }

/* ========================== 模态框 / Toast ========================== */
#modal-root > div {
  border-radius: 20px !important;
  box-shadow: var(--shadow-lg) !important;
  overflow: hidden;
}
#modal-root .px-6.py-4.border-b { background: linear-gradient(180deg, #fbfdff, #f3f8ff); }
#modal-root h3 { letter-spacing: -.01em; }

/* ========================== 课表网格 ========================== */
.schedule-grid th, .schedule-grid td { border: 1px solid #e2e8f0; }
.schedule-cell { background: #f0f9ff; }
.schedule-cell:hover { background: #e0f2fe; }

/* ========================== 动画 ========================== */
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.kpi, .stat-card, .quick, .panel { animation: fadeUp .4s ease both; }