/* 新商业综合运营实训 - 通用样式
 * 设计原则：响应式优先、信息密度适中、教学场景沉稳
 */

:root {
  /* 主题色：商业蓝（庄重） */
  --color-primary: #1e3a5f;
  --color-primary-light: #2c5282;
  --color-primary-dark: #14233b;
  --color-accent: #f59e0b;
  --color-accent-light: #fbbf24;

  /* 状态色 */
  --color-success: #16a34a;
  --color-warning: #ea580c;
  --color-danger: #dc2626;
  --color-info: #0ea5e9;

  /* 中性色 */
  --color-bg: #f8fafc;
  --color-card: #ffffff;
  --color-border: #e2e8f0;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;

  /* 间距 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;

  /* 圆角与阴影 */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  background: white;
  color: var(--color-text);
  border-color: var(--color-border);
  user-select: none;
  white-space: nowrap;
}
.btn:hover { background: var(--color-bg); border-color: var(--color-text-muted); }
.btn-primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-light); border-color: var(--color-primary-light); }
.btn-accent {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}
.btn-accent:hover { background: var(--color-accent-light); border-color: var(--color-accent-light); }
.btn-danger { color: var(--color-danger); border-color: var(--color-danger); background: transparent; }
.btn-danger:hover { background: var(--color-danger); color: white; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--color-text-muted); }
.btn-ghost:hover { background: var(--color-bg); color: var(--color-text); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
}
.form-label .required { color: var(--color-danger); margin-left: 2px; }
.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  background: white;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.1);
}
.form-control[readonly], .form-control:disabled { background: var(--color-bg); color: var(--color-text-muted); }
textarea.form-control { min-height: 80px; resize: vertical; }
select.form-control { cursor: pointer; }
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.form-help { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }
.form-error { font-size: 12px; color: var(--color-danger); margin-top: 4px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 20px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}
.card-title { margin: 0; font-size: 16px; font-weight: 600; color: var(--color-text); }
.card-subtitle { margin: 4px 0 0; font-size: 12px; color: var(--color-text-muted); }

/* ---------- 徽章 ---------- */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.badge-primary { background: rgba(30, 58, 95, 0.08); color: var(--color-primary); border-color: transparent; }
.badge-success { background: rgba(22, 163, 74, 0.1); color: var(--color-success); border-color: transparent; }
.badge-warning { background: rgba(234, 88, 12, 0.1); color: var(--color-warning); border-color: transparent; }
.badge-danger { background: rgba(220, 38, 38, 0.1); color: var(--color-danger); border-color: transparent; }
.badge-info { background: rgba(14, 165, 233, 0.1); color: var(--color-info); border-color: transparent; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--color-border); }
.table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  font-size: 13px;
}
.table th, .table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}
.table th {
  background: var(--color-bg);
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.table tbody tr:hover { background: var(--color-bg); }
.table tbody tr:last-child td { border-bottom: none; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- Tab ---------- */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 16px;
  overflow-x: auto;
}
.tab {
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
  white-space: nowrap;
}
.tab:hover { color: var(--color-text); }
.tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ---------- Alert ---------- */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  margin-bottom: 16px;
  font-size: 13px;
}
.alert-info { background: rgba(14, 165, 233, 0.08); border-color: rgba(14, 165, 233, 0.2); color: #075985; }
.alert-success { background: rgba(22, 163, 74, 0.08); border-color: rgba(22, 163, 74, 0.2); color: #166534; }
.alert-warning { background: rgba(234, 88, 12, 0.08); border-color: rgba(234, 88, 12, 0.2); color: #9a3412; }
.alert-danger { background: rgba(220, 38, 38, 0.08); border-color: rgba(220, 38, 38, 0.2); color: #991b1b; }

/* ---------- 工具栏 ---------- */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.toolbar-left, .toolbar-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.toolbar-search {
  position: relative;
}
.toolbar-search input {
  padding: 8px 12px 8px 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 13px;
  width: 220px;
}
.toolbar-search::before {
  content: "🔍";
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  pointer-events: none;
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}
.modal-overlay.show { display: flex; }
.modal {
  background: white;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-title { margin: 0; font-size: 16px; font-weight: 600; }
.modal-body { padding: 20px; }
.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ---------- 进度条 ---------- */
.progress {
  height: 8px;
  background: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: var(--color-primary);
  transition: width 0.3s;
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
  .toolbar-search input { width: 100%; }
  .form-row { grid-template-columns: 1fr; }
  .table { font-size: 12px; }
  .table th, .table td { padding: 8px; }
}
@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(15, 23, 42, 0.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(15, 23, 42, 0.3); }