/* ===== MODERN CSS FRAMEWORK - MTS 2025 ===== */

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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --dark-color: #1f2937;
    --light-color: #f8fafc;
    --white-color: #ffffff;
    --border-color: #e5e7eb;
    --text-color: #374151;
    --text-muted: #6b7280;
    --sidebar-width: 260px;
    --header-height: 70px;
    --border-radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Layout System */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transition: transform 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.sidebar-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.sidebar-menu {
    list-style: none;
    padding: 1rem 0;
}

.sidebar-menu li {
    margin: 0.25rem 0;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 0 25px 25px 0;
    margin-right: 1rem;
}

.sidebar-menu a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(5px);
}

.sidebar-menu a.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-weight: 600;
}

.sidebar-menu a i {
    font-size: 1.1rem;
    width: 24px;
    margin-right: 0.75rem;
}

/* Sidebar Footer - Kullanıcı Bilgileri */
.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.1);
    padding: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-info {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.user-avatar {
    margin-right: 0.75rem;
}

.user-avatar i {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.user-details {
    flex: 1;
}

.user-name {
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.user-role {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
}

.user-actions {
    text-align: center;
}

.logout-btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.logout-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(-1px);
}

/* Submenu Styles */
.sidebar-menu .submenu {
    list-style: none;
    margin: 0;
    padding: 0;
    margin-left: 2rem;
    margin-top: 0.5rem;
    border-left: 2px solid rgba(255, 255, 255, 0.1);
}

.sidebar-menu .submenu li {
    margin: 0;
}

.sidebar-menu .submenu a {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    text-decoration: none;
    border-radius: 4px;
    margin: 2px 0;
    transition: all 0.3s ease;
}

.sidebar-menu .submenu a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(5px);
}

.sidebar-menu .submenu a i {
    font-size: 0.9rem;
    width: 16px;
    margin-right: 0.5rem;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--light-color);
    transition: margin-left 0.3s ease;
}

.main-content.expanded {
    margin-left: 0;
}

.header {
    background: white;
    padding: 0 2rem;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.sidebar-toggle:hover {
    background: var(--light-color);
}

/* Container System */
.container-fluid {
    width: 100%;
    padding: 0 1rem;
    max-width: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Grid System */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: -0.5rem;
}

.col-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
.col-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

[class*="col-"] {
    padding: 0.5rem;
}

/* Card Components */
.table-container {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.table-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.table-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Stat Cards */
.stat-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card.primary { border-left-color: var(--primary-color); }
.stat-card.success { border-left-color: var(--success-color); }
.stat-card.warning { border-left-color: var(--warning-color); }
.stat-card.danger { border-left-color: var(--danger-color); }
.stat-card.info { border-left-color: var(--info-color); }
.stat-card.secondary { border-left-color: var(--dark-color); }

.stat-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-card-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: var(--primary-color);
}

.stat-card-icon.primary { background: var(--primary-color); }
.stat-card-icon.success { background: var(--success-color); }
.stat-card-icon.warning { background: var(--warning-color); }
.stat-card-icon.danger { background: var(--danger-color); }
.stat-card-icon.info { background: var(--info-color); }
.stat-card-icon.secondary { background: var(--dark-color); }

.stat-card-content {
    flex: 1;
}

.stat-card-title {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    background: white;
    color: var(--text-color);
}

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

.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1rem;
    padding-right: 2.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    white-space: nowrap;
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

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

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

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

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

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

.btn-light {
    background: var(--light-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 0;
    font-size: 0.875rem;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: #065f46;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #92400e;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #991b1b;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    color: #0e7490;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary { background: rgba(102, 126, 234, 0.1); color: var(--primary-color); }
.badge-success { background: rgba(16, 185, 129, 0.1); color: var(--success-color); }
.badge-warning { background: rgba(245, 158, 11, 0.1); color: var(--warning-color); }
.badge-danger { background: rgba(239, 68, 68, 0.1); color: var(--danger-color); }
.badge-info { background: rgba(6, 182, 212, 0.1); color: var(--info-color); }
.badge-secondary { background: rgba(31, 41, 55, 0.1); color: var(--dark-color); }

/* Utilities */
.d-flex { display: flex; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.justify-content-end { justify-content: flex-end; }
.align-items-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-color); }
.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-danger { color: var(--danger-color); }
.text-info { color: var(--info-color); }
.text-muted { color: var(--text-muted); }

.bg-primary { background-color: var(--primary-color); }
.bg-success { background-color: var(--success-color); }
.bg-warning { background-color: var(--warning-color); }
.bg-danger { background-color: var(--danger-color); }
.bg-info { background-color: var(--info-color); }
.bg-light { background-color: var(--light-color); }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.m-0 { margin: 0; }
.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-3 { margin: 1rem; }
.m-4 { margin: 1.5rem; }
.m-5 { margin: 3rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.me-2 { margin-right: 0.5rem; }
.me-3 { margin-right: 1rem; }

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

.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .header {
        padding: 0 1rem;
    }
    
    .container-fluid {
        padding: 0 0.5rem;
    }
    
    [class*="col-"] {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .table-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .stat-card-header {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .stat-card-icon {
        align-self: center;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .header,
    .btn {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
    }
    
    .table-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --light-color: #1f2937;
        --white-color: #111827;
        --text-color: #f9fafb;
        --text-muted: #9ca3af;
        --border-color: #374151;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
/* Bootstrap benzeri modern tasarım */

:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --white: #ffffff;
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --border-radius: 0.375rem;
  --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --box-shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
}

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

body {
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.5;
  color: var(--dark-color);
  background-color: #f5f6fa;
  overflow-x: hidden;
}

/* Container ve Grid Sistemi */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.container-fluid {
  width: 100%;
  padding: 0 15px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -15px;
}

.col {
  flex: 1;
  padding: 0 15px;
}

.col-12 { flex: 0 0 100%; max-width: 100%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--white);
  z-index: 1000;
  transition: all 0.3s ease;
  overflow-y: auto;
}

.sidebar.collapsed {
  width: 60px;
}

.sidebar-header {
  padding: 1.5rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.sidebar-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.sidebar.collapsed .sidebar-header h3 {
  display: none;
}

.sidebar-menu {
  list-style: none;
  padding: 1rem 0;
}

.sidebar-menu li {
  margin: 0;
}

.sidebar-menu a {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all 0.3s ease;
  border-left: 3px solid transparent;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
  color: var(--white);
  background-color: rgba(255, 255, 255, 0.1);
  border-left-color: var(--white);
}

.sidebar-menu i {
  width: 20px;
  margin-right: 0.75rem;
  text-align: center;
  font-size: 1.1rem;
}

.sidebar.collapsed .sidebar-menu span {
  display: none;
}

/* Main Content */
.main-content {
  margin-left: 260px;
  transition: all 0.3s ease;
  min-height: 100vh;
}

.sidebar.collapsed + .main-content {
  margin-left: 60px;
}

/* Header */
.header {
  background: var(--white);
  padding: 1rem 2rem;
  box-shadow: var(--box-shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
}

.sidebar-toggle {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--dark-color);
  cursor: pointer;
  margin-right: 1rem;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: all 0.3s ease;
}

.sidebar-toggle:hover {
  background-color: var(--light-color);
}

.header-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark-color);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Dashboard Cards */
.dashboard-stats {
  padding: 2rem;
}

.stat-card {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--box-shadow);
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
  border-left: 4px solid var(--primary-color);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-lg);
}

.stat-card.success {
  border-left-color: var(--success-color);
}

.stat-card.danger {
  border-left-color: var(--danger-color);
}

.stat-card.warning {
  border-left-color: var(--warning-color);
}

.stat-card.info {
  border-left-color: var(--info-color);
}

.stat-card-header {
  display: flex;
  justify-content: between;
  align-items: center;
  margin-bottom: 1rem;
}

.stat-card-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
  background: var(--primary-color);
}

.stat-card.success .stat-card-icon {
  background: var(--success-color);
}

.stat-card.danger .stat-card-icon {
  background: var(--danger-color);
}

.stat-card.warning .stat-card-icon {
  background: var(--warning-color);
}

.stat-card.info .stat-card-icon {
  background: var(--info-color);
}

.stat-card-content {
  flex: 1;
  margin-left: 1rem;
}

.stat-card-title {
  font-size: 0.875rem;
  color: var(--secondary-color);
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.stat-card-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark-color);
}

.stat-card-change {
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.stat-card-change.positive {
  color: var(--success-color);
}

.stat-card-change.negative {
  color: var(--danger-color);
}

/* Tables */
.table-container {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.table-header {
  padding: 1.5rem;
  border-bottom: 1px solid #dee2e6;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.table-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark-color);
  margin: 0;
}

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

.table th,
.table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid #dee2e6;
  vertical-align: middle;
}

.table th {
  background-color: var(--light-color);
  font-weight: 600;
  color: var(--dark-color);
}

.table tbody tr:hover {
  background-color: rgba(0, 123, 255, 0.05);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.3s ease;
  gap: 0.5rem;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.btn-primary:hover {
  background-color: #0056b3;
  border-color: #0056b3;
}

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

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

.btn-warning {
  color: var(--dark-color);
  background-color: var(--warning-color);
  border-color: var(--warning-color);
}

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

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

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--dark-color);
}

.form-control {
  display: block;
  width: 100%;
  padding: 0.75rem;
  font-size: 0.9rem;
  border: 1px solid #ced4da;
  border-radius: var(--border-radius);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m1 6 7 7 7-7'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px 12px;
  padding-right: 2.5rem;
}

/* Badge/Status */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-success {
  color: var(--white);
  background-color: var(--success-color);
}

.badge-danger {
  color: var(--white);
  background-color: var(--danger-color);
}

.badge-warning {
  color: var(--dark-color);
  background-color: var(--warning-color);
}

.badge-info {
  color: var(--white);
  background-color: var(--info-color);
}

.badge-secondary {
  color: var(--white);
  background-color: var(--secondary-color);
}

/* Alerts */
.alert {
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
}

.alert-success {
  color: #155724;
  background-color: #d4edda;
  border-color: #c3e6cb;
}

.alert-danger {
  color: #721c24;
  background-color: #f8d7da;
  border-color: #f5c6cb;
}

.alert-warning {
  color: #856404;
  background-color: #fff3cd;
  border-color: #ffeaa7;
}

.alert-info {
  color: #0c5460;
  background-color: #d1ecf1;
  border-color: #bee5eb;
}

/* Loading Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: 260px;
  }
  
  .sidebar.show {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .sidebar.collapsed + .main-content {
    margin-left: 0;
  }
  
  .header {
    padding: 1rem;
  }
  
  .dashboard-stats {
    padding: 1rem;
  }
  
  .col-6,
  .col-4,
  .col-3 {
    flex: 0 0 100%;
    max-width: 100%;
  }
  
  .table-container {
    overflow-x: auto;
  }
  
  .table {
    min-width: 600px;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }

.font-weight-bold { font-weight: 700; }
.font-weight-normal { font-weight: 400; }

.text-primary { color: var(--primary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-info { color: var(--info-color); }
.text-muted { color: var(--secondary-color); }

/* Modal/Popup */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1050;
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow-lg);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid #dee2e6;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--secondary-color);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid #dee2e6;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

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

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

/* Card Components */
.card {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.card-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 1.1rem;
}

.card-header h4,
.card-header h5,
.card-header h6 {
  margin: 0;
  color: white;
}

.card-body {
  padding: 1.25rem;
}

.card-footer {
  background: var(--light-color);
  border-top: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.card-title {
  margin-bottom: 0.75rem;
  color: var(--dark-color);
  font-weight: 600;
}

.card-text {
  margin-bottom: 1rem;
  color: var(--text-color);
}

.card-link {
  color: var(--primary-color);
  text-decoration: none;
  margin-right: 1rem;
}

.card-link:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

/* Card Variants */
.card.card-primary {
  border-color: var(--primary-color);
}

.card.card-primary .card-header {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.card.card-success {
  border-color: var(--success-color);
}

.card.card-success .card-header {
  background: var(--success-color);
  border-color: var(--success-color);
}

.card.card-warning {
  border-color: var(--warning-color);
}

.card.card-warning .card-header {
  background: var(--warning-color);
  border-color: var(--warning-color);
  color: var(--dark-color);
}

.card.card-danger {
  border-color: var(--danger-color);
}

.card.card-danger .card-header {
  background: var(--danger-color);
  border-color: var(--danger-color);
}

.card.card-info {
  border-color: var(--info-color);
}

.card.card-info .card-header {
  background: var(--info-color);
  border-color: var(--info-color);
}

/* Detail Groups */
.detail-group {
  margin-bottom: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.detail-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.detail-group label {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  margin-bottom: 0.25rem;
}

.detail-group span {
  color: var(--text-color);
  font-size: 1rem;
  font-weight: 500;
}

.detail-group .text-success {
  color: var(--success-color) !important;
}

.detail-group .text-danger {
  color: var(--danger-color) !important;
}

/* Table Wrapper for Horizontal Scroll */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-wrapper table {
  min-width: 100%;
}

.table-wrapper table thead {
  background-color: #f8f9fa;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.table-wrapper table thead th {
  background-color: #f8f9fa;
  border-bottom: 2px solid var(--border-color);
  padding: 1rem 0.75rem;
  text-align: left;
  color: var(--text-muted);
}

.table-wrapper table tbody td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.table-wrapper table tbody tr:hover {
  background-color: #f9fafb;
  transition: background-color 0.2s ease;
}

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

.table-wrapper table .text-end {
  text-align: right;
}

.table-wrapper table .badge {
  display: inline-block;
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 4px;
}

.table-wrapper table .badge.bg-light {
  background-color: #f3f4f6 !important;
  border: 1px solid #e5e7eb;
}

/* Responsive table */
@media (max-width: 768px) {
  .table-wrapper table thead th {
    padding: 0.75rem 0.5rem;
    font-size: 0.65rem;
  }

  .table-wrapper table tbody td {
    padding: 0.5rem;
    font-size: 0.85rem;
  }

  .table-wrapper table .badge {
    font-size: 0.65rem;
  }
}

.detail-group .text-warning {
  color: var(--warning-color) !important;
}

.detail-group .text-info {
  color: var(--info-color) !important;
}