@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

:root {
  --navy: #1b2a4a;
  --navy-light: #243556;
  --navy-hover: #2d4068;
  --amber: #c8952e;
  --amber-light: #f0ddb8;
  --amber-dark: #9e7524;
  --white: #ffffff;
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #868e96;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
  --success: #2d9f5a;
  --danger: #d64545;
  --warning: #e6a817;
  --info: #3498db;
  --sidebar-width: 260px;
  --topbar-height: 60px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  font-size: 14px;
  line-height: 1.6;
}

/* ===== LAYOUT ===== */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--navy);
  color: var(--white);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.sidebar-header {
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-header h1 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--amber);
}

.sidebar-header span {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  display: block;
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 0;
  overflow-y: auto;
}

.nav-section {
  padding: 0 16px;
  margin-bottom: 8px;
}

.nav-section-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: rgba(255,255,255,0.35);
  padding: 8px 12px 6px;
  font-weight: 600;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s ease;
}

.nav-link:hover {
  background: var(--navy-hover);
  color: var(--white);
}

.nav-link.active {
  background: var(--navy-light);
  color: var(--amber);
}

.nav-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.7;
}

.nav-link.active svg { opacity: 1; }

.sidebar-footer {
  padding: 16px 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

/* ===== MAIN CONTENT ===== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

.topbar {
  height: var(--topbar-height);
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-500);
}

.breadcrumb a {
  color: var(--gray-600);
  text-decoration: none;
}

.breadcrumb a:hover { color: var(--navy); }

.breadcrumb-sep { color: var(--gray-400); }

.breadcrumb-current {
  color: var(--gray-800);
  font-weight: 500;
}

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

.user-info {
  font-size: 13px;
  color: var(--gray-600);
}

.user-info strong {
  color: var(--gray-800);
}

.btn-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--gray-700);
}

.content {
  padding: 32px;
  max-width: 1400px;
}

/* ===== PAGE HEADER ===== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
}

.page-header-actions {
  display: flex;
  gap: 8px;
}

/* ===== CARDS ===== */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-800);
}

.card-body {
  padding: 20px;
}

/* ===== STAT CARDS (Dashboard) ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 22px;
  height: 22px;
}

.stat-icon.navy { background: rgba(27,42,74,0.1); color: var(--navy); }
.stat-icon.amber { background: rgba(200,149,46,0.12); color: var(--amber-dark); }
.stat-icon.success { background: rgba(45,159,90,0.1); color: var(--success); }
.stat-icon.info { background: rgba(52,152,219,0.1); color: var(--info); }

.stat-content h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--gray-500);
  font-weight: 600;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.1;
}

.stat-detail {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ===== TABLES ===== */
.table-container {
  overflow-x: auto;
}

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

thead th {
  padding: 10px 16px;
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--gray-500);
  font-weight: 600;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}

tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-100);
  font-size: 13px;
  color: var(--gray-700);
}

tbody tr:hover {
  background: var(--gray-50);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.badge-success { background: rgba(45,159,90,0.1); color: var(--success); }
.badge-danger { background: rgba(214,69,69,0.1); color: var(--danger); }
.badge-warning { background: rgba(230,168,23,0.1); color: var(--warning); }
.badge-info { background: rgba(52,152,219,0.1); color: var(--info); }
.badge-navy { background: rgba(27,42,74,0.1); color: var(--navy); }
.badge-amber { background: rgba(200,149,46,0.12); color: var(--amber-dark); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  line-height: 1.4;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--navy);
  color: var(--white);
}
.btn-primary:hover { background: var(--navy-light); }

.btn-amber {
  background: var(--amber);
  color: var(--white);
}
.btn-amber:hover { background: var(--amber-dark); }

.btn-outline {
  background: var(--white);
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}
.btn-outline:hover { background: var(--gray-50); border-color: var(--gray-400); }

.btn-danger {
  background: var(--danger);
  color: var(--white);
}
.btn-danger:hover { background: #c53030; }

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-icon {
  padding: 6px;
  border-radius: 6px;
  background: none;
  border: 1px solid transparent;
  color: var(--gray-500);
  cursor: pointer;
}
.btn-icon:hover { background: var(--gray-100); color: var(--gray-700); }

/* ===== FORMS ===== */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  color: var(--gray-800);
  background: var(--white);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(27,42,74,0.1);
}

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

.form-group .helptext {
  font-size: 11px;
  color: var(--gray-500);
  margin-top: 4px;
}

.form-group .errorlist {
  list-style: none;
  padding: 0;
  margin-top: 4px;
}

.form-group .errorlist li {
  font-size: 12px;
  color: var(--danger);
}

.form-actions {
  display: flex;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
  margin-top: 8px;
}

.form-section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--amber);
  margin-bottom: 16px;
  margin-top: 24px;
}

.form-section-title:first-child { margin-top: 0; }

/* ===== DETAIL VIEW ===== */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
}

.detail-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
}

.detail-item dt {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--gray-500);
  font-weight: 600;
  margin-bottom: 2px;
}

.detail-item dd {
  font-size: 14px;
  color: var(--gray-800);
}

/* ===== ALERTS / MESSAGES ===== */
.messages {
  list-style: none;
  padding: 0;
  margin-bottom: 16px;
}

.messages li {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 8px;
  border-left: 4px solid;
}

.messages .success {
  background: rgba(45,159,90,0.08);
  border-color: var(--success);
  color: #1a6b35;
}

.messages .error {
  background: rgba(214,69,69,0.08);
  border-color: var(--danger);
  color: #9c2020;
}

.messages .warning {
  background: rgba(230,168,23,0.08);
  border-color: var(--warning);
  color: #8a6400;
}

.messages .info {
  background: rgba(52,152,219,0.08);
  border-color: var(--info);
  color: #1a5276;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 16px 0;
}

.pagination a, .pagination span {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  text-decoration: none;
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
}

.pagination a:hover { background: var(--gray-100); }

.pagination .current {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--gray-500);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state h3 {
  font-size: 16px;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 13px;
  margin-bottom: 16px;
}

/* ===== DELETE CONFIRM ===== */
.delete-confirm {
  max-width: 480px;
  margin: 60px auto;
  text-align: center;
}

.delete-confirm h3 {
  margin-bottom: 8px;
  color: var(--danger);
}

.delete-confirm p {
  color: var(--gray-600);
  margin-bottom: 24px;
}

/* ===== LOGIN PAGE ===== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  padding: 24px;
}

.login-card {
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  width: 100%;
  max-width: 400px;
  padding: 40px;
}

.login-card h1 {
  font-size: 18px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--navy);
  text-align: center;
  margin-bottom: 4px;
}

.login-card .subtitle {
  text-align: center;
  color: var(--gray-500);
  font-size: 13px;
  margin-bottom: 32px;
}

.login-card .login-divider {
  width: 40px;
  height: 3px;
  background: var(--amber);
  margin: 12px auto 8px;
  border-radius: 2px;
}

.login-card .form-group label {
  text-transform: none;
  letter-spacing: 0;
  font-size: 13px;
}

.login-card .btn-primary {
  width: 100%;
  padding: 12px;
  font-size: 14px;
  font-weight: 600;
  justify-content: center;
  margin-top: 8px;
}

.login-card .error-msg {
  background: rgba(214,69,69,0.08);
  border: 1px solid rgba(214,69,69,0.2);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--danger);
  margin-bottom: 16px;
  text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
  .btn-menu-toggle {
    display: block;
  }
  .content {
    padding: 16px;
  }
  .topbar {
    padding: 0 16px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== SIDEBAR OVERLAY (mobile) ===== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
}
.sidebar-overlay.active { display: block; }

/* ===== TWO COLUMN LAYOUT ===== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
}

/* ===== ACTION LINKS IN TABLES ===== */
.table-actions {
  display: flex;
  gap: 4px;
}

.row-link {
  color: var(--navy);
  text-decoration: none;
  font-weight: 500;
}
.row-link:hover { text-decoration: underline; }