:root {
  --primary: #274259;
  --primary-light: #3a5f7a;
  --secondary: #f2e3d5;
  --accent: #d9822b;
  --success: #28a745;
  --danger: #dc3545;
  --warning: #ffc107;
  --info: #17a2b8;
  --dark: #1a1a2e;
  --gray: #6c757d;
  --light: #f8f9fa;
  --sidebar-width: 250px;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f0f2f5;
  color: #333;
  min-height: 100vh;
}

/* LOGIN */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary) 0%, #1a3a5c 100%);
}
.login-box {
  background: white;
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.login-box h2 {
  color: var(--primary);
  text-align: center;
  margin-bottom: 30px;
  font-size: 1.5rem;
}
.login-box .form-control {
  border-radius: 8px;
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  transition: border-color 0.2s;
}
.login-box .form-control:focus {
  border-color: var(--primary);
  box-shadow: none;
}
.login-box .btn-primary {
  background: var(--primary);
  border: none;
  border-radius: 8px;
  padding: 12px;
  font-weight: 600;
  width: 100%;
  transition: background 0.2s;
}
.login-box .btn-primary:hover { background: var(--primary-light); }

/* LAYOUT */
.app-layout { display: none; }
.app-layout.active { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-width);
  background: var(--primary);
  color: white;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  overflow-y: auto;
  transition: transform 0.3s;
}
.sidebar-header {
  padding: 20px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar-header h4 { font-size: 1rem; margin: 0; }
.sidebar-header small { opacity: 0.7; }
.sidebar .nav-link {
  color: rgba(255,255,255,0.7);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.2s;
  text-decoration: none;
  font-size: 0.9rem;
}
.sidebar .nav-link:hover, .sidebar .nav-link.active {
  color: white;
  background: rgba(255,255,255,0.1);
}
.sidebar .nav-link .icon { width: 20px; text-align: center; }

.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 20px 30px;
  min-height: 100vh;
}

/* TOPBAR */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
  margin-bottom: 20px;
  border-bottom: 1px solid #e0e0e0;
}
.topbar h3 { margin: 0; font-size: 1.4rem; color: var(--primary); }
.topbar .user-info {
  display: flex;
  align-items: center;
  gap: 15px;
}
.topbar .user-name { font-weight: 600; }
.topbar .btn-logout {
  background: none;
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 5px 15px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.topbar .btn-logout:hover {
  background: var(--danger);
  color: white;
}

/* CARDS */
.card {
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  padding: 20px;
  margin-bottom: 20px;
  border: none;
}
.card-stat {
  text-align: center;
  padding: 25px 20px;
}
.card-stat .number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}
.card-stat .label {
  font-size: 0.85rem;
  color: var(--gray);
  margin-top: 5px;
}

/* TABLES */
.table {
  margin: 0;
}
.table th {
  background: var(--primary);
  color: white;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 10px 12px;
  border: none;
}
.table td {
  padding: 10px 12px;
  vertical-align: middle;
  font-size: 0.9rem;
}
.table-hover tbody tr:hover { background: #f5f7fa; }

/* BADGES */
.badge-status {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-p { background: #fff3cd; color: #856404; }
.badge-c { background: #f8d7da; color: #721c24; }
.badge-i { background: #d4edda; color: #155724; }
.badge-f { background: #cce5ff; color: #004085; }

/* FORMS */
.form-label { font-weight: 600; font-size: 0.85rem; color: #555; margin-bottom: 5px; }
.form-control, .form-select {
  border-radius: 6px;
  border: 2px solid #e0e0e0;
  padding: 8px 12px;
  font-size: 0.9rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(39,66,89,0.15);
}

.btn {
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-primary { background: var(--primary); border: none; }
.btn-primary:hover { background: var(--primary-light); }
.btn-success { background: var(--success); border: none; }
.btn-danger { background: var(--danger); border: none; }
.btn-warning { background: var(--warning); border: none; color: #333; }
.btn-info { background: var(--info); border: none; color: white; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

/* MODAL */
.modal-content {
  border-radius: 12px;
  border: none;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.modal-header {
  background: var(--primary);
  color: white;
  border-radius: 12px 12px 0 0;
  padding: 15px 20px;
}
.modal-header .btn-close { filter: brightness(0) invert(1); }
.modal-body { padding: 20px; }
.modal-footer { padding: 15px 20px; border-top: 1px solid #eee; }

/* PAGE HEADER */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.page-header h4 { margin: 0; color: var(--primary); }

/* FILTERS */
.filters { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
.filters .form-control, .filters .form-select { width: auto; min-width: 150px; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; padding: 15px; }
  .topbar h3 { font-size: 1.1rem; }
}

/* UTILITIES */
.text-muted { color: var(--gray); }
.mb-3 { margin-bottom: 15px; }
.mt-3 { margin-top: 15px; }
.gap-2 { gap: 8px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.w-100 { width: 100%; }

/* LOADING */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  color: var(--gray);
}
.spinner { width: 40px; height: 40px; border: 4px solid #e0e0e0; border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* TOAST */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; }
.toast-msg {
  padding: 12px 20px;
  border-radius: 8px;
  color: white;
  margin-bottom: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  animation: slideIn 0.3s ease;
  font-size: 0.9rem;
}
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-warning { background: var(--warning); color: #333; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }