/* Global Design System - Modern, Clean, High-end UI */
:root {
  --brand-50: #eef2ff;
  --brand-100: #e0e7ff;
  --brand-200: #c7d2fe;
  --brand-300: #a5b4fc;
  --brand-400: #818cf8;
  --brand-500: #6366f1; /* primary */
  --brand-600: #4f46e5;
  --brand-700: #4338ca;

  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #0ea5e9;

  --bg: #0b1020;             /* dark base */
  --bg-elev: #101630;        /* dark elevated */
  --bg-hover: #151c3a;
  --text: #e6e8ee;
  --text-dim: #a9afc3;
  --border: #222a47;
  --card-shadow: 0 10px 30px rgba(3, 7, 18, .35);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;

  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
}

/* Light theme overrides */
body.theme-light {
  --bg: #f7f8fb;
  --bg-elev: #ffffff;
  --bg-hover: #f3f4f6;
  --text: #111827;
  --text-dim: #6b7280;
  --border: #e5e7eb;
  --card-shadow: 0 6px 18px rgba(17, 24, 39, .06);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  background: radial-gradient(1000px 700px at 0% -20%, rgba(99,102,241,.15), transparent),
              radial-gradient(900px 700px at 100% 120%, rgba(56,189,248,.12), transparent),
              var(--bg);
  color: var(--text);
  letter-spacing: 0.2px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container { min-height: 100vh; display: grid; grid-template-rows: 64px 1fr; }

/* Header */
.header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  background: linear-gradient(180deg, rgba(16,22,48,.9), rgba(16,22,48,.75));
  backdrop-filter: blur(8px);
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--border);
}
.header .brand { display: flex; align-items: center; gap: 12px; }
.header .brand h1 { font-size: 18px; margin: 0; font-weight: 700; }
.header .brand .badge { font-size: 12px; padding: 4px 8px; border: 1px solid var(--border); border-radius: 999px; color: var(--text-dim); }
.header .user-info { display: flex; gap: 10px; align-items: center; }
@media (max-width: 768px) { .header .user-info { display: none; } }

.header .actions { display: flex; gap: 10px; align-items: center; }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border); color: var(--text); background: var(--bg-elev); cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); position: relative; overflow: hidden; }
.icon-btn:hover { background: var(--bg-hover); transform: translateY(-1px) scale(1.05); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); }
.icon-btn:active { transform: translateY(0) scale(0.98); }
/* 主题切换按钮特殊样式 */
#btnTheme { font-size: 18px; }
#btnTheme:hover { background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2)); }
body.theme-light #btnTheme:hover { background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(245, 158, 11, 0.2)); }
.btn-logout { color: var(--text); text-decoration: none; padding: 8px 12px; border: 1px solid var(--border); border-radius: 10px; }
.btn-logout:hover { background: var(--bg-hover); }

/* Main layout */
.main-content { display: grid; grid-template-columns: 260px 1fr; }
body.sidebar-collapsed .main-content { grid-template-columns: 78px 1fr; }
.sidebar {
  position: sticky; top: 64px; align-self: start; height: calc(100vh - 64px);
  background: var(--bg-elev); border-right: 1px solid var(--border); padding: var(--space-4) 0;
  box-shadow: inset -1px 0 0 var(--border);
}
.sidebar .menu { list-style: none; margin: 0; padding: 0; }
.sidebar .menu li { margin: 6px 10px; }
.sidebar .menu a { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text-dim); padding: 10px 14px; border-radius: 10px; transition: .2s; }
.sidebar .menu a:hover { background: var(--bg-hover); color: var(--text); }
.sidebar .menu a.active { background: linear-gradient(90deg, var(--brand-600), var(--brand-500)); color: #fff; box-shadow: 0 6px 14px rgba(79,70,229,.35); }
.sidebar .menu a svg { opacity: .9; }

/* Collapsed */
.sidebar.collapsed { width: 78px; }
.sidebar.collapsed .menu a span.label { display: none; }
.sidebar.collapsed .menu a { justify-content: center; }

/* Content */
.content { padding: var(--space-6); }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-5); }
.page-header h2 { margin: 0; font-size: 20px; }

/* Cards / Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--space-4); }
.stat-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-5); box-shadow: var(--card-shadow); }
.stat-card h3 { margin: 0 0 8px; color: var(--text-dim); font-size: 13px; letter-spacing: .3px; }
.stat-card .value { font-size: 28px; font-weight: 700; }
.stat-trend { font-size: 12px; color: var(--text-dim); margin-top: 6px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid transparent; border-radius: 10px; padding: 10px 14px; cursor: pointer; font-size: 14px; text-decoration: none; transition: .2s; }
.btn-primary { 
  background: linear-gradient(180deg, var(--brand-500), var(--brand-600)) !important; 
  color: #fff !important; 
  box-shadow: 0 8px 18px rgba(79,70,229,.35) !important;
  text-decoration: none !important;
}
.btn-primary:hover { 
  transform: translateY(-1px); 
}
.btn-success { background: linear-gradient(180deg, #22c55e, #16a34a); color: #fff; box-shadow: 0 8px 18px rgba(34,197,94,.25); }
.btn-info { background: linear-gradient(180deg, #38bdf8, #0ea5e9); color: #fff; box-shadow: 0 8px 18px rgba(14,165,233,.25); }
.btn-danger { 
  background: linear-gradient(180deg, #ef4444, #dc2626) !important; 
  color: #fff !important; 
  box-shadow: 0 8px 18px rgba(239,68,68,.25) !important;
  text-decoration: none !important;
}
.btn-danger:hover {
  background: linear-gradient(180deg, #dc2626, #b91c1c) !important;
}
.btn-warning { 
  background: linear-gradient(180deg, #f59e0b, #d97706) !important; 
  color: #fff !important; 
  box-shadow: 0 8px 18px rgba(245,158,11,.25) !important;
  text-decoration: none !important;
}
.btn-warning:hover { 
  transform: translateY(-1px); 
  background: linear-gradient(180deg, #d97706, #b45309) !important;
}
.btn-secondary { background: var(--bg-elev); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg-hover); }

/* 操作列表头 - 设置最小宽度确保有足够空间（最后一列） */
.table-container thead th:last-child {
  min-width: 200px !important;
  width: auto !important;
  text-align: center !important;
}

/* 操作列单元格 - 直接让 td 成为 flex 容器（最后一列） */
.table-container tbody td.action-buttons,
.table-container td.action-buttons,
.table-container tbody td:last-child {
  display: flex !important;
  flex-direction: row !important;
  justify-content: center !important;
  align-items: center !important;
  gap: 8px !important;
  flex-wrap: wrap !important;
  text-align: center !important;
  vertical-align: middle !important;
  padding: 14px 16px !important;
  min-width: 200px !important;
  width: auto !important;
  box-sizing: border-box !important;
}

/* 操作按钮 */
.table-container td.action-buttons .btn,
.table-container tbody td:last-child .btn,
.action-buttons .btn,
.action-buttons a.btn {
  flex-shrink: 0 !important;
  white-space: nowrap !important;
  margin: 0 !important;
  display: inline-flex !important;
  text-decoration: none !important;
}

/* Tables */
.table-container { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--card-shadow); }
.table-container table { width: 100%; border-collapse: collapse; }
.table-container thead { background: linear-gradient(180deg, rgba(99,102,241,.08), rgba(99,102,241,0)); }
.table-container th,
.table-container td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  text-align: center;
}
.table-container th:first-child,
.table-container td:first-child {
  text-align: left;
}
.table-container tbody tr:hover { background: var(--bg-hover); }
.table-container tbody tr.row-low-stock {
  background: rgba(245,158,11,.15);
}
.product-thumb {
  width: 80px;
  max-width: 80px;
  height: 80px;
  max-height: 80px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: block;
  margin: 0 auto;
}

/* Forms */
.form-container { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-5); box-shadow: var(--card-shadow); max-width: 1000px; }
.form-group { margin-bottom: var(--space-4); }
.form-group label { display: block; margin-bottom: 6px; color: var(--text-dim); font-size: 13px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 12px;
  /* 统一使用白色背景 + 深色文字，白天对比度更高 */
  color: #111827;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
  transition: .15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(99,102,241,.2);
}
.form-group input[readonly],
.form-group input:disabled {
  background-color: #f3f4f6 !important;
  color: #6b7280 !important;
  cursor: not-allowed;
}
body.theme-light .form-group input[readonly],
body.theme-light .form-group input:disabled {
  background-color: #f9fafb !important;
  color: #6b7280 !important;
}

/* 占位符颜色稍微变淡，避免和真实内容混淆 */
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
  opacity: 0.8;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }

/* Alerts */
.alert { padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); margin-bottom: var(--space-4); font-size: 14px; }
.alert-success { background: rgba(34,197,94,.12); color: #86efac; border-color: rgba(34,197,94,.35); }
.alert-danger { background: rgba(239,68,68,.12); color: #fca5a5; border-color: rgba(239,68,68,.35); }
.alert-info { background: rgba(56,189,248,.12); color: #7dd3fc; border-color: rgba(56,189,248,.35); }

/* Badges */
.status-badge { display: inline-flex; align-items: center; padding: 4px 10px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border); color: var(--text-dim); background: var(--bg-elev); }
.status-pending { background: rgba(245,158,11,.1); color: #fbbf24; border-color: rgba(245,158,11,.3); }
.status-processing { background: rgba(99,102,241,.1); color: #a5b4fc; border-color: rgba(99,102,241,.35); }
.status-ready { background: rgba(59,130,246,.18); color: #bfdbfe; border-color: rgba(59,130,246,.55); }
.status-submitted { background: rgba(56,189,248,.2); color: #bae6fd; border-color: rgba(56,189,248,.55); }
.status-completed { background: rgba(34,197,94,.1); color: #86efac; border-color: rgba(34,197,94,.35); }
.status-cancelled { background: rgba(239,68,68,.1); color: #fca5a5; border-color: rgba(239,68,68,.35); }
/* 亮色主题下让状态更明显 */
body.theme-light .status-ready {
  background: #dbeafe;
  color: #1d4ed8;
  border-color: #60a5fa;
}
body.theme-light .status-submitted {
  background: #ccfbf1;
  color: #0f766e;
  border-color: #5eead4;
}

/* Search bar */
.search-bar { display: flex; gap: 10px; margin-bottom: var(--space-4); }
.search-bar input {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #ffffff;
  color: #111827;
}

/* Filter bar for system params */
.filter-bar {
  padding: 16px 16px 8px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.filter-bar-form {
  display: flex;
  align-items: center;
  gap: 10px;
}
.filter-bar-form label {
  font-size: 13px;
  color: var(--text-dim);
}
.filter-bar-form select {
  min-width: 160px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  outline: none;
}
body.theme-light .filter-bar-form select {
  background: #ffffff;
  color: #111827;
}
.btn-sm {
  padding: 6px 10px;
  font-size: 12px;
}

/* Pagination */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: var(--space-4); }
.pagination a, .pagination span { padding: 8px 12px; border: 1px solid var(--border); border-radius: 10px; text-decoration: none; color: var(--text-dim); }
.pagination .active { background: var(--brand-600); color: #fff; border-color: transparent; }

/* Auth (Login) */
.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: var(--space-6); }
.auth-card { width: 100%; max-width: 420px; padding: var(--space-6); background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--card-shadow); }
.auth-card h1 { text-align: center; margin: 0 0 14px; font-size: 22px; }
.auth-subtitle { text-align: center; color: var(--text-dim); margin-bottom: var(--space-4); font-size: 13px; }
.auth-actions { margin-top: var(--space-4); display: grid; gap: 10px; }

/* Responsive */
@media (max-width: 1200px) { .form-row { grid-template-columns: 1fr; } }
@media (max-width: 992px) { .main-content { grid-template-columns: 78px 1fr; } .sidebar { width: 78px; } .sidebar .menu a span.label { display:none; } }
@media (max-width: 768px) { .content { padding: var(--space-4); } .header { padding: 0 var(--space-4); } }

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    margin: 0;
    font-size: 18px;
}

.close-button {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-dim);
}

.modal-body {
    padding: var(--space-5);
    overflow-y: auto;
}

.detail-section {
    margin-bottom: var(--space-5);
}

.detail-section h4 {
    margin: 0 0 var(--space-3);
    color: var(--text-dim);
    font-size: 14px;
    border-bottom: 1px solid var(--border);
    padding-bottom: var(--space-2);
}

.detail-section p {
    margin: 0 0 var(--space-2);
    font-size: 14px;
}

.original-address-box {
    background: var(--bg);
    padding: var(--space-3);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 13px;
    color: var(--text-dim);
}

.detail-table {
    width: 100%;
    border-collapse: collapse;
}

.detail-table th,
.detail-table td {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border);
    text-align: left;
}

.detail-table thead {
    background: var(--bg-hover);
}