/* ==================== Reset & Variables ==================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --primary-light: #e8f0fe;
  --success: #0d9488;
  --warning: #f59e0b;
  --danger: #dc2626;
  --bg: #f3f4f6;
  --bg-card: #ffffff;
  --bg-secondary: #e5e7eb;
  --text: #1f2937;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  --sidebar-bg: #111827;
  --sidebar-text: #d1d5db;
  --sidebar-active: #1a73e8;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.12);
  --transition: .2s ease;
}

html { font-size: 14px; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
input, select, textarea, button { font-family: inherit; font-size: inherit; }

/* ==================== Login Page ==================== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a5f 0%, #1a73e8 100%);
}
.login-card {
  background: var(--bg-card);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 400px;
  max-width: 90vw;
  overflow: hidden;
}
.login-header {
  background: var(--primary);
  color: #fff;
  padding: 28px 32px;
  text-align: center;
}
.login-header h1 { font-size: 1.4rem; font-weight: 600; margin-bottom: 4px; }
.login-header p { font-size: .85rem; opacity: .85; }
.login-form { padding: 28px 32px; }

/* ==================== Forms ==================== */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text-secondary);
  font-size: .9rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  transition: border-color var(--transition);
  color: var(--text);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,115,232,.15);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-section { margin-bottom: 24px; }
.form-section-title {
  font-size: 1rem;
  font-weight: 600;
  padding-bottom: 8px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--primary);
  color: var(--primary);
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: .9; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: .9; }
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text-secondary);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 4px 10px; font-size: .85rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
}
.btn-icon:hover { color: var(--primary); }

/* ==================== Layout ==================== */
.app-layout { display: flex; height: 100vh; overflow: hidden; }

.sidebar {
  width: 240px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: margin-left var(--transition);
  z-index: 100;
}
.sidebar.collapsed { margin-left: -240px; }
.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-header h2 { font-size: 1.1rem; color: #fff; font-weight: 600; }
.sidebar-nav { flex: 1; padding: 12px 0; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--sidebar-text);
  transition: all var(--transition);
  font-size: .95rem;
  border-left: 3px solid transparent;
}
.nav-item:hover { background: rgba(255,255,255,.06); color: #fff; text-decoration: none; }
.nav-item.active {
  background: rgba(26,115,232,.2);
  color: #fff;
  border-left-color: var(--sidebar-active);
}
.nav-icon { font-size: .7rem; opacity: .7; }
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.user-info { display: flex; align-items: center; gap: 8px; font-size: .85rem; }
.role-badge {
  font-size: .7rem;
  padding: 2px 8px;
  border-radius: 10px;
  background: #dbeafe;
  color: #1e40af;
  font-weight: 500;
}

.main-content { flex: 1; display: flex; flex-direction: column; min-width: 0; overflow: hidden; }
.top-bar {
  background: var(--bg-card);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.top-bar h3 { flex: 1; font-size: 1.1rem; font-weight: 600; }
.top-bar-right { font-size: .9rem; color: var(--text-secondary); }
.content-area { flex: 1; padding: 24px; overflow-y: auto; min-height: 0; }

/* ==================== Cards & Tables ==================== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-header h4 { font-size: 1rem; font-weight: 600; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  border-left: 4px solid var(--primary);
}
.stat-card.green { border-left-color: var(--success); }
.stat-card.yellow { border-left-color: var(--warning); }
.stat-card.red { border-left-color: var(--danger); }
.stat-number { font-size: 1.8rem; font-weight: 700; color: var(--text); }
.stat-label { font-size: .85rem; color: var(--text-secondary); margin-top: 4px; }

table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
}
th {
  background: var(--bg);
  font-weight: 600;
  color: var(--text-secondary);
  position: sticky;
  top: 0;
}
tr:hover td { background: #f9fafb; }
.table-actions { display: flex; gap: 6px; }

/* ==================== Toolbar ==================== */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.search-box {
  flex: 1;
  min-width: 200px;
  max-width: 360px;
  position: relative;
}
.search-box input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.search-box::before {
  content: "\1F50D";
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: .9rem;
  opacity: .4;
}

/* ==================== Modal ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-container {
  background: var(--bg-card);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  width: 720px;
  max-width: 95vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 1.05rem; font-weight: 600; }
.btn-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  line-height: 1;
}
.btn-close:hover { color: var(--danger); }
.modal-body { padding: 24px; overflow-y: auto; flex: 1; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ==================== Toast ==================== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  padding: 12px 20px;
  border-radius: var(--radius);
  color: #fff;
  font-size: .9rem;
  box-shadow: var(--shadow-lg);
  animation: slideIn .3s ease;
  max-width: 360px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ==================== Error / Helpers ==================== */
.error-msg { color: var(--danger); font-size: .85rem; margin: 8px 0; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--text-secondary); }
.empty-state p { font-size: 1rem; margin-bottom: 12px; }
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: .78rem;
  font-weight: 500;
}
.badge-active { background: #d1fae5; color: #065f46; }
.badge-draft { background: #e5e7eb; color: #374151; }
.badge-closed { background: #fee2e2; color: #991b1b; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-confirmed { background: #d1fae5; color: #065f46; }
.badge-cancelled { background: #e5e7eb; color: #374151; }

/* ==================== Pagination ==================== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 16px;
}
.pagination button {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  cursor: pointer;
  font-size: .85rem;
}
.pagination button:hover { border-color: var(--primary); color: var(--primary); }
.pagination button:disabled { opacity: .4; cursor: default; }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-info { font-size: .85rem; color: var(--text-secondary); }

/* ==================== Tags ==================== */
.tag-group { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tag {
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 14px;
  font-size: .8rem;
  cursor: pointer;
  transition: all var(--transition);
}
.tag:hover { background: var(--primary); color: #fff; }
.tag.selected { background: var(--primary); color: #fff; }

/* ==================== Detail View ==================== */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.detail-item { margin-bottom: 12px; }
.detail-label { font-size: .8rem; color: var(--text-secondary); margin-bottom: 2px; }
.detail-value { font-weight: 500; }

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
  .sidebar { position: fixed; left: 0; top: 0; bottom: 0; }
  .sidebar.collapsed { margin-left: -240px; }
  .content-area { padding: 16px; }
  .form-row { flex-direction: column; gap: 0; }
  .modal-container { width: 95vw; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* Searchable Select */
.searchable-select input[type="text"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,115,232,.15);
  outline: none;
}
.searchable-select [data-val]:hover {
  background: var(--primary-light) !important;
}
/* Notification Panel */
#notification-panel { transition: opacity .2s ease; }
#notification-panel > div:first-child { position: sticky; top: 0; background: var(--bg-card); z-index: 1; }


/* Disabled / Readonly form elements */
.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled {
  background-color: #f0f0f0 !important;
  color: #888 !important;
  cursor: not-allowed !important;
  border-color: #ddd !important;
  opacity: 0.7;
}
.form-group input[readonly],
.form-group textarea[readonly] {
  background-color: #f0f0f0 !important;
  color: #666 !important;
  cursor: default !important;
  border-color: #ddd !important;
}

/* Label hint for readonly fields */
.field-hint {
  font-size: .75rem;
  color: var(--danger);
  margin-left: 4px;
}
/* Notification bell states */
#notification-bell { filter: grayscale(1) opacity(0.5); transition: filter 0.3s, transform 0.3s; }
#notification-bell.has-unread { filter: none; animation: bell-shake 0.5s ease-in-out; }
@keyframes bell-shake { 0%,100%{transform:rotate(0)} 25%{transform:rotate(12deg)} 50%{transform:rotate(-12deg)} 75%{transform:rotate(6deg)} }

/* Footer */
.app-footer{text-align:center;padding:12px 16px;font-size:.8rem;color:var(--text-secondary);border-top:1px solid var(--border);background:var(--bg);flex-shrink:0;}
.app-footer a{color:var(--text-secondary);text-decoration:none;}
.app-footer a:hover{color:var(--primary);}