/* ==========================================================================
   MARITIME EQUIPMENT INSPECTION & EXPIRATION ALERT SYSTEM - DESIGN SYSTEM
   ========================================================================== */

:root {
  /* Seaport Maritime Color Palette */
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-sidebar: #0f172a; /* Deep Seaport Navy */
  --bg-sidebar-hover: #1e293b;
  --bg-sidebar-active: #0284c7;

  --border-color: #e2e8f0;
  --border-subtle: #cbd5e1;

  /* Typography */
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;

  /* Brand Accents */
  --primary: #0284c7;      /* Ocean Blue */
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --secondary: #475569;

  /* Status Alert Colors */
  --color-valid: #10b981;       /* 🟢 Còn hiệu lực */
  --bg-valid-light: #ecfdf5;
  --text-valid: #047857;

  --color-expiring: #f59e0b;    /* 🟠 Sắp hết hạn */
  --bg-expiring-light: #fffbeb;
  --text-expiring: #b45309;

  --color-expired: #ef4444;     /* 🔴 Đã hết hạn */
  --bg-expired-light: #fef2f2;
  --text-expired: #b91c1c;

  --color-info: #06b6d4;
  --bg-info-light: #cff4fc;

  /* Elevation Shadows & Radius */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --transition: all 0.2s ease-in-out;
}

/* Dark Mode Theme Overrides */
[data-theme="dark"] {
  --bg-main: #0b1329;
  --bg-surface: #131d38;
  --bg-sidebar: #070c1a;
  --bg-sidebar-hover: #192648;
  --border-color: #1e2d54;
  --border-subtle: #2b3d6b;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-light: #64748b;

  --primary-light: rgba(2, 132, 199, 0.2);
  --bg-valid-light: rgba(16, 185, 129, 0.15);
  --bg-expiring-light: rgba(245, 158, 11, 0.15);
  --bg-expired-light: rgba(239, 68, 68, 0.15);

  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 270px;
  background-color: var(--bg-sidebar);
  color: var(--text-white);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition);
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
}

.brand-header {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #0284c7, #06b6d4);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.4);
}

.brand-title h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #ffffff;
  line-height: 1.2;
}

.brand-title span {
  font-size: 0.75rem;
  color: #38bdf8;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.sidebar-menu {
  list-style: none;
  padding: 20px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.menu-item button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: #94a3b8;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.menu-item button:hover {
  background-color: var(--bg-sidebar-hover);
  color: #ffffff;
}

.menu-item.active button {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.menu-item button i {
  width: 20px;
  height: 20px;
}

.badge-count {
  margin-left: auto;
  padding: 2px 8px;
  font-size: 0.75rem;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.badge-count.expired {
  background-color: #ef4444;
  color: #ffffff;
}

.badge-count.expiring {
  background-color: #f59e0b;
  color: #ffffff;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
  color: #64748b;
}

.port-status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: #cbd5e1;
  font-size: 0.82rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
}

/* Main Content Area */
.main-wrapper {
  margin-left: 270px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Top Navbar */
.navbar {
  height: 70px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: var(--shadow-sm);
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.btn-icon:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.btn-icon .dot-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 9px;
  height: 9px;
  background: var(--color-expired);
  border-radius: 50%;
  border: 2px solid var(--bg-surface);
}

/* Content View Body */
.content-area {
  padding: 32px;
  flex: 1;
}

.view-section {
  display: none;
  animation: fadeIn 0.25s ease-in-out forwards;
}

.view-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1.2;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #075985);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-main);
  border-color: var(--border-subtle);
}

.btn-outline-danger {
  background: transparent;
  color: var(--color-expired);
  border-color: rgba(239, 68, 68, 0.4);
}

.btn-outline-danger:hover {
  background: var(--bg-expired-light);
  border-color: var(--color-expired);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

/* Dashboard Metric Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.metric-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.metric-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--card-accent, var(--primary));
}

.metric-card.valid-card::before { var(--card-accent): var(--color-valid); }
.metric-card.expiring-card::before { var(--card-accent): var(--color-expiring); }
.metric-card.expired-card::before { var(--card-accent): var(--color-expired); }

.metric-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.metric-info {
  flex: 1;
}

.metric-value {
  font-family: 'Outfit', sans-serif;
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.1;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 4px;
}

/* Dashboard Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.chart-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.chart-header h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.chart-container {
  position: relative;
  height: 280px;
  width: 100%;
}

/* Data Table & Controls */
.table-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.table-header-controls {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.search-box {
  position: relative;
  min-width: 280px;
}

.search-box input {
  width: 100%;
  padding: 10px 14px 10px 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-main);
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.search-box i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 18px;
  height: 18px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-select {
  padding: 9px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.88rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
}

.filter-select:focus {
  border-color: var(--primary);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.data-table th {
  background: var(--bg-main);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
  color: var(--text-main);
}

.data-table tbody tr {
  transition: var(--transition);
}

.data-table tbody tr:hover {
  background-color: rgba(2, 132, 199, 0.04);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-success {
  background-color: var(--bg-valid-light);
  color: var(--text-valid);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background-color: var(--bg-expiring-light);
  color: var(--text-expiring);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
  background-color: var(--bg-expired-light);
  color: var(--text-expired);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-neutral {
  background-color: #f1f5f9;
  color: #475569;
  border: 1px solid #cbd5e1;
}

.table-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.action-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.action-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.action-btn.delete:hover {
  background: var(--bg-expired-light);
  color: var(--color-expired);
  border-color: var(--color-expired);
}

/* Pagination */
.pagination-wrapper {
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pagination-controls {
  display: flex;
  gap: 6px;
}

/* Alerts Banner & Warning Cards */
.alert-banner {
  background: linear-gradient(135deg, #fff7ed, #ffedd5);
  border: 1px solid #fed7aa;
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
  color: #9a3412;
}

.alert-banner.danger {
  background: linear-gradient(135deg, #fef2f2, #fee2e2);
  border-color: #fecaca;
  color: #991b1b;
}

.alert-banner-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Modal Drawer / Overlays */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: var(--transition);
  overflow: hidden;
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  background: var(--bg-main);
}

/* Form Controls */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-label.required::after {
  content: ' *';
  color: var(--color-expired);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
}

/* Detail Modal Styles */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  background: var(--bg-main);
  padding: 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.detail-item {
  display: flex;
  flex-direction: column;
}

.detail-item .label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.detail-item .value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: #0f172a;
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  min-width: 280px;
  animation: slideInRight 0.3s ease-out forwards;
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .sidebar {
    width: 220px;
  }
  .main-wrapper {
    margin-left: 220px;
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  .main-wrapper {
    margin-left: 0;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.full-width {
    grid-column: span 1;
  }
  .content-area {
    padding: 16px;
  }
}

/* Print Certificate Media */
@media print {
  body * {
    visibility: hidden;
  }
  .printable-certificate, .printable-certificate * {
    visibility: visible;
  }
  .printable-certificate {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
  }
}