/* ========== TD-K 仓储系统 - 多主题支持 ========== */

/* —— 暗色主题（默认） —— */
:root,[data-theme="dark"] {
  --bg-primary: #0b0f1a;
  --bg-secondary: #131827;
  --bg-card: #1a2035;
  --bg-card-hover: #1f2740;
  --bg-input: #0f1420;
  --border-color: #2a3350;
  --border-active: #00d4ff;
  --text-primary: #e0e6ed;
  --text-secondary: #8892a8;
  --text-muted: #55607a;
  --accent-cyan: #00d4ff;
  --accent-blue: #0ea5e9;
  --accent-green: #10b981;
  --accent-warning: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #8b5cf6;
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.08);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --radius: 8px;
  --radius-sm: 4px;
  --transition: 0.2s ease;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
}

/* —— 亮色主题 —— */
[data-theme="light"] {
  --bg-primary: #f0f4f8;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #ffffff;
  --border-color: #d1d9e6;
  --border-active: #0ea5e9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent-cyan: #0ea5e9;
  --accent-blue: #2563eb;
  --accent-green: #10b981;
  --accent-warning: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #8b5cf6;
  --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.1);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .top-nav {
  background: rgba(255, 255, 255, 0.85);
  border-bottom-color: #d1d9e6;
}
[data-theme="light"] .data-table thead th {
  background: #f8fafc;
  color: #64748b;
}
[data-theme="light"] .auth-page {
  background: linear-gradient(135deg, #e0e7ff 0%, #f0f4f8 50%, #fdf2f8 100%);
}
[data-theme="light"] .flash-msg.flash-success {
  background: #ecfdf5; color: #065f46; border-color: #a7f3d0;
}
[data-theme="light"] .alert-box.alert-warning {
  background: #fffbeb; color: #92400e; border-color: #fde68a;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ========== 顶栏导航 ========== */
.top-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  background: rgba(19, 24, 39, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 52px;
  overflow-x: auto;
  gap: 4px;
}
.top-nav::-webkit-scrollbar { height: 2px; }
.top-nav::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

.top-nav a, .top-nav .nav-link {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}
.top-nav a:hover, .top-nav .nav-link:hover {
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.06);
  border-color: rgba(0, 212, 255, 0.15);
}
.top-nav a.active {
  color: var(--accent-cyan);
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.08);
}
.top-nav .nav-home {
  color: var(--accent-cyan);
  font-weight: 600;
  letter-spacing: 0.5px;
}
.top-nav .nav-sep {
  color: var(--border-color);
  font-size: 12px;
  user-select: none;
}
.top-nav .nav-theme-btn {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
  background: var(--bg-card);
}
.top-nav .nav-theme-btn:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.3);
}

/* ========== 主容器 ========== */
.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 72px 20px 40px;
}
.page-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 24px; flex-wrap: wrap; gap: 12px;
}
.page-header h1, .page-header h2 {
  font-size: 22px; font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-header .subtitle {
  color: var(--text-secondary); font-size: 14px; font-weight: 400;
  -webkit-text-fill-color: var(--text-secondary);
}

/* ========== 卡片 ========== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.card:hover { border-color: rgba(0, 212, 255, 0.2); }
.card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px;
}
.card-title { font-size: 16px; font-weight: 600; color: var(--text-primary); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

/* ========== 表格 ========== */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}
.data-table thead th {
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.06), transparent);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 12px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}
.data-table tbody td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(42, 51, 80, 0.4);
  font-size: 14px;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: rgba(0, 212, 255, 0.03); }
.data-table .low-stock { background: rgba(239, 68, 68, 0.08) !important; }
.data-table .low-stock:hover { background: rgba(239, 68, 68, 0.12) !important; }

/* ========== 表单 ========== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 600; color: var(--text-secondary); }
.form-input, input[type="text"], input[type="password"], input[type="number"], input[type="file"], select, textarea {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  transition: all var(--transition);
  outline: none;
}
.form-input:focus, input:focus, select:focus, textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}
.form-input::placeholder { color: var(--text-muted); }
.form-row {
  display: flex; gap: 16px; flex-wrap: wrap;
}
.form-row > * { flex: 1; min-width: 180px; }
select { cursor: pointer; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.btn:active { transform: translateY(0); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-lg { padding: 10px 24px; font-size: 15px; }

.btn-primary { background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan)); color: #000; font-weight: 700; }
.btn-primary:hover { box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3); }
.btn-success { background: linear-gradient(135deg, #059669, var(--accent-green)); color: #fff; }
.btn-success:hover { box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3); }
.btn-warning { background: linear-gradient(135deg, #d97706, var(--accent-warning)); color: #000; }
.btn-warning:hover { box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3); }
.btn-danger { background: linear-gradient(135deg, #dc2626, var(--accent-red)); color: #fff; }
.btn-danger:hover { box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3); }
.btn-ghost { background: transparent; color: var(--text-secondary); border-color: var(--border-color); }
.btn-ghost:hover { color: var(--accent-cyan); border-color: var(--accent-cyan); background: rgba(0, 212, 255, 0.05); }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* ========== 弹窗 ========== */
.modal {
  display: none;
  position: fixed; z-index: 1000; left: 0; top: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
}
.modal-content {
  background: var(--bg-card);
  margin: 5% auto;
  padding: 24px;
  border-radius: var(--radius);
  width: 90%; max-width: 700px;
  max-height: 80vh; overflow-y: auto;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal-content h2 {
  font-size: 18px; font-weight: 700;
  margin-bottom: 20px;
  color: var(--accent-cyan);
}
.modal-close {
  float: right; font-size: 24px; font-weight: bold;
  color: var(--text-muted); cursor: pointer;
  transition: color var(--transition);
}
.modal-close:hover { color: var(--accent-cyan); }

/* ========== 提示消息 ========== */
.flash-msg {
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 14px;
  border: 1px solid transparent;
}
.flash-success { background: rgba(16, 185, 129, 0.1); color: #6ee7b7; border-color: rgba(16, 185, 129, 0.2); }
.flash-error { background: rgba(239, 68, 68, 0.1); color: #fca5a5; border-color: rgba(239, 68, 68, 0.2); }
.flash-info { background: rgba(0, 212, 255, 0.1); color: #67e8f9; border-color: rgba(0, 212, 255, 0.2); }
.flash-warning { background: rgba(245, 158, 11, 0.1); color: #fde68a; border-color: rgba(245, 158, 11, 0.2); }

/* ========== 状态标签 ========== */
.badge {
  display: inline-block; padding: 2px 8px;
  border-radius: 10px; font-size: 11px; font-weight: 700;
  letter-spacing: 0.3px;
}
.badge-cyan { background: rgba(0, 212, 255, 0.15); color: var(--accent-cyan); }
.badge-green { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.badge-red { background: rgba(239, 68, 68, 0.15); color: var(--accent-red); }
.badge-yellow { background: rgba(245, 158, 11, 0.15); color: var(--accent-warning); }
.badge-purple { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }

/* ========== 低库存预警 ========== */
.alert-box {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 14px;
  border: 1px solid;
}
.alert-warning {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--accent-warning);
}
.alert-danger {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--accent-red);
}
.toggle-btn {
  background: none; border: none; color: var(--accent-cyan);
  cursor: pointer; font-size: 13px; text-decoration: underline;
  padding: 4px 0;
}
.toggle-btn:hover { color: #67e8f9; }

/* ========== 筛选栏 ========== */
.filter-bar {
  display: flex; gap: 12px; align-items: center;
  flex-wrap: wrap;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.filter-bar label { color: var(--text-secondary); font-size: 13px; }
.filter-bar input { width: 160px; }
.filter-bar .btn { flex-shrink: 0; }

/* ========== 物料搜索框自动完成 ========== */
.search-wrapper { position: relative; }
.suggestions {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-top: none;
  max-height: 200px; overflow-y: auto;
  z-index: 999;
  display: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}
.suggestions div {
  padding: 8px 12px; cursor: pointer;
  font-size: 13px; color: var(--text-primary);
  border-bottom: 1px solid rgba(42, 51, 80, 0.3);
}
.suggestions div:last-child { border-bottom: none; }
.suggestions div:hover { background: rgba(0, 212, 255, 0.08); color: var(--accent-cyan); }

/* ========== BOM编辑内联行 ========== */
.new-row { background: rgba(0, 212, 255, 0.04); }
.matched { color: var(--accent-green); }

/* ========== 登录/注册 ========== */
.auth-page {
  display: flex; justify-content: center; align-items: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at center, var(--bg-secondary) 0%, var(--bg-primary) 70%);
}
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%; max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.auth-card h1 {
  font-size: 24px; font-weight: 800;
  text-align: center; margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.auth-card p { text-align: center; color: var(--text-secondary); margin-bottom: 24px; font-size: 14px; }
.auth-card .form-group { margin-bottom: 20px; }

/* ========== 链接 ========== */
a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: #67e8f9; }

/* ========== 文本标签 ========== */
.text-muted { color: var(--text-muted); }
.text-cyan { color: var(--accent-cyan); }
.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }

/* ========== 间距 ========== */
.mt-1 { margin-top: 4px; } .mt-2 { margin-top: 8px; } .mt-3 { margin-top: 12px; } .mt-4 { margin-top: 20px; }
.mb-1 { margin-bottom: 4px; } .mb-2 { margin-bottom: 8px; } .mb-3 { margin-bottom: 12px; } .mb-4 { margin-bottom: 20px; }
.mr-1 { margin-right: 4px; } .mr-2 { margin-right: 8px; }
.ml-1 { margin-left: 4px; } .ml-2 { margin-left: 8px; }
.p-1 { padding: 4px; } .p-2 { padding: 8px; } .p-3 { padding: 12px; } .p-4 { padding: 20px; }

/* ========== 其他 ========== */
.text-center { text-align: center; }
.flex { display: flex; }
.flex-center { align-items: center; justify-content: center; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }