/* assets/css/custom.css */

/* ========================================
   MODERN UI/UX ENHANCEMENTS
   ======================================== */

/* === CSS Variables === */
:root {
  /* Layout */
  --sidebar-width: 260px;
  
  /* Modern Color Palette */
  --primary: #667eea;
  --primary-hover: #5568d3;
  --secondary: #f093fb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-warning: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  
  /* Neutral Colors */
  --bg: #f8f9fc;
  --panel: #ffffff;
  --muted: #6b7280;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}

/* === Dark Theme Variables === */
[data-theme="dark"] {
  --bg: #0f172a;
  --panel: #1e293b;
  --muted: #94a3b8;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --border: #334155;
  color: var(--text-primary);
}

/* === Base Styles === */
body {
  background: var(--bg);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.app {
  min-height: 100vh;
}

/* === Content Area === */
.content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition-base);
}

.topbar {
  height: 70px;
  background: var(--panel);
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.topbar .page-title h4 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.topbar .avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
  transition: var(--transition-fast);
  cursor: pointer;
}

.topbar .avatar:hover {
  border-color: var(--primary);
  transform: scale(1.05);
}

/* === Main Content === */
main {
  background: transparent;
  padding: var(--spacing-lg);
  flex: 1;
}

/* === Cards === */
.card {
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  background: var(--panel);
  margin-bottom: var(--spacing-md);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-md) var(--spacing-lg);
  font-weight: 600;
}

.card-body {
  padding: var(--spacing-lg);
}

/* === Buttons === */
.btn {
  transition: all var(--transition-fast);
  font-weight: 500;
  border-radius: 8px;
  padding: 0.5rem 1rem;
  border: none;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

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

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

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

/* === Forms === */
.form-control,
.form-select {
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  transition: var(--transition-fast);
  background: var(--panel);
  color: var(--text-primary);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  outline: none;
}

.form-label {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
}

/* === Tables === */
.table {
  background: var(--panel);
  color: var(--text-primary);
}

.table thead {
  background: var(--bg);
  border-bottom: 2px solid var(--border);
}

.table th {
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  padding: 0.75rem;
}

.table td {
  padding: 0.75rem;
  vertical-align: middle;
}

.table-hover tbody tr:hover {
  background: var(--bg);
}

.table-striped tbody tr:nth-of-type(odd) {
  background: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .table-striped tbody tr:nth-of-type(odd) {
  background: rgba(255, 255, 255, 0.02);
}

/* DataTables Responsive */
.dataTables_wrapper {
  padding: 0;
}

.dataTables_filter input {
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  margin-left: 0.5rem;
}

.dataTables_length select {
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 0.375rem 2rem 0.375rem 0.75rem;
  margin: 0 0.5rem;
}

/* === Badges === */
.badge {
  padding: 0.35em 0.65em;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.75rem;
}

/* === Alerts === */
.alert {
  border-radius: 8px;
  border: none;
  padding: 1rem;
  margin-bottom: 1rem;
}

/* === Modals === */
.modal-content {
  border-radius: 12px;
  border: none;
  box-shadow: var(--shadow-xl);
  background: var(--panel);
}

.modal-header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

/* === Dropdown === */
.dropdown-menu {
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  background: var(--panel);
  padding: 0.5rem 0;
}

.dropdown-item {
  padding: 0.5rem 1rem;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.dropdown-item:hover {
  background: var(--bg);
  color: var(--primary);
}

.dropdown:hover .dropdown-menu {
  display: block;
  margin-top: 0;
}

/* === Animations === */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    transform: translateX(-20px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

.slide-in {
  animation: slideIn 0.3s ease;
}

/* === Utilities === */
.text-white-50 {
  opacity: 0.9;
}

.shadow-sm {
  box-shadow: var(--shadow-sm) !important;
}

.shadow-md {
  box-shadow: var(--shadow-md) !important;
}

.shadow-lg {
  box-shadow: var(--shadow-lg) !important;
}

/* === Mobile Responsiveness === */

/* Tablets (992px and below) */
@media (max-width: 992px) {
  .content {
    margin-left: 0;
  }
  
  main {
    padding: var(--spacing-md);
  }
  
  .card-body {
    padding: var(--spacing-md);
  }
}

/* Mobile (768px and below) */
@media (max-width: 768px) {
  main {
    padding: var(--spacing-sm);
  }
  
  .topbar {
    height: 60px;
  }
  
  .topbar .page-title h4 {
    font-size: 1rem;
  }
  
  .card {
    border-radius: 8px;
  }
  
  .card-body {
    padding: var(--spacing-sm);
  }
  
  .btn {
    font-size: 0.875rem;
  }
  
  /* Stack form fields */
  .row > [class*="col-"] {
    margin-bottom: var(--spacing-sm);
  }
  
  /* Make tables scrollable */
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  /* Adjust modal for mobile */
  .modal-dialog {
    margin: 0.5rem;
  }
}

/* Small Mobile (576px and below) */
@media (max-width: 576px) {
  .topbar {
    height: 56px;
  }
  
  .topbar .page-title h4 {
    font-size: 0.95rem;
  }
  
  .btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
  }
  
  .card-header {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
  }
  
  /* Hide less important columns on mobile */
  .table .d-none-mobile {
    display: none !important;
  }
}

/* === Touch-Friendly === */
@media (hover: none) and (pointer: coarse) {
  /* Minimum touch targets */
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  .form-control,
  .form-select {
    min-height: 44px;
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  .table td,
  .table th {
    padding: 1rem 0.75rem;
  }
}

/* === Print Styles === */
@media print {
  .sidebar,
  .topbar,
  footer,
  .btn,
  .no-print {
    display: none !important;
  }
  
  .content {
    margin-left: 0 !important;
    width: 100% !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}