:root {
    --primary-color: #6366f1;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --info-color: #06b6d4;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --light-color: #f8fafc;
    --dark-color: #0f172a;
    --bg-primary: #1e293b;
    --bg-secondary: #334155;
    --text-light: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --card-bg: #1e293b;
    --gradient-bg: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

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

body {
    background: var(--gradient-bg);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    color: var(--text-light);
    font-size: 13px;
    line-height: 1.4;
    min-height: 100vh;
}

.navbar {
    background: var(--bg-primary) !important;
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 0;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-light) !important;
}

.nav-link {
    color: var(--text-muted) !important;
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem !important;
    transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color) !important;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 6px;
}

.container,
.container-fluid {
    max-width: 1400px;
    padding: 0 1rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    margin-bottom: 1rem;
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.4);
}

.card-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 0.8rem 1rem;
    border-radius: 12px 12px 0 0;
    font-size: 0.9rem;
    font-weight: 500;
}

.card-body {
    padding: 1rem;
    color: var(--text-light);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    position: relative;
    overflow: hidden;
    transition: all 0.2s ease;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
}

.stat-card.danger::before { background: var(--danger-color); }
.stat-card.warning::before { background: var(--warning-color); }
.stat-card.success::before { background: var(--success-color); }
.stat-card.info::before { background: var(--info-color); }

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-light);
    line-height: 1;
    margin-bottom: 0.3rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.btn {
    border-radius: 8px;
    padding: 0.4rem 0.8rem;
    font-weight: 500;
    font-size: 0.8rem;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: #5856eb;
    border-color: #5856eb;
    transform: translateY(-1px);
}

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

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

.btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
}

.table {
    color: var(--text-light);
    background: transparent;
    margin: 0;
    font-size: 0.8rem;
}

.table th {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    border-color: var(--border-color);
    padding: 0.6rem;
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background: rgba(99, 102, 241, 0.05);
    color: var(--text-light);
}

.badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
}

.badge.bg-secondary { background: var(--secondary-color) !important; }
.badge.bg-primary { background: var(--primary-color) !important; }
.badge.bg-success { background: var(--success-color) !important; }
.badge.bg-warning { background: var(--warning-color) !important; color: #000; }
.badge.bg-danger { background: var(--danger-color) !important; }
.badge.bg-info { background: var(--info-color) !important; }

.priority-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.priority-1 { background: var(--success-color); }
.priority-2 { background: var(--info-color); }
.priority-3 { background: var(--warning-color); color: #000; }
.priority-4 { background: #f97316; }
.priority-5 { background: var(--danger-color); }

.form-control, .form-select {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--text-light);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.8rem;
    margin-bottom: 0.4rem;
}

.form-range {
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
}

.form-range::-webkit-slider-thumb {
    appearance: none;
    height: 18px;
    width: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid white;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.form-range::-moz-range-thumb {
    height: 18px;
    width: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid white;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.priority-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.priority-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
    position: relative;
    overflow: hidden;
}

.priority-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--warning-color), var(--danger-color));
    transition: width 0.3s ease;
    border-radius: 3px;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-muted);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    color: var(--text-light);
}

.upload-content i {
    font-size: 2.5rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.upload-area:hover .upload-content i {
    color: var(--primary-color);
}

.file-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.6rem;
    margin: 0.3rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    animation: slideIn 0.3s ease;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-light);
}

.modal-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    border-radius: 12px 12px 0 0;
}

.btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.7;
}

.alert {
    border-radius: 8px;
    font-size: 0.85rem;
    padding: 0.75rem 1rem;
    border: none;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border-left: 3px solid var(--danger-color);
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: #86efac;
    border-left: 3px solid var(--success-color);
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    color: #67e8f9;
    border-left: 3px solid var(--info-color);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #fcd34d;
    border-left: 3px solid var(--warning-color);
}

footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 1rem 0;
    margin-top: auto;
    font-size: 0.8rem;
}

.login-container {
    min-height: 100vh;
    background: var(--gradient-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    max-width: 400px;
    width: 100%;
}

.input-group-text {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.filter-buttons .btn {
    border-radius: 20px;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

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

.spinner-border {
    width: 2rem;
    height: 2rem;
    color: var(--primary-color);
}

.text-muted {
    color: var(--text-muted) !important;
}

.bg-light {
    background: var(--light-color) !important;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease;
}

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

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .container, .container-fluid {
        padding: 0 0.75rem;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    .table-responsive {
        font-size: 0.75rem;
    }
    
    .btn-group-sm .btn {
        padding: 0.2rem 0.4rem;
        font-size: 0.7rem;
    }
    
    .upload-area {
        padding: 1.5rem 1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    body {
        font-size: 12px;
    }
}

.attachment-list {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 1rem;
}

.attachment-item {
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.8rem;
}

.attachment-item:last-child {
    border-bottom: none;
}

.attachment-icon {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 41, 59, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
}

.navbar-text {
    color: var(--text-muted) !important;
    font-size: 0.8rem;
}

.table-actions {
    white-space: nowrap;
}

.sortable {
    cursor: pointer;
    user-select: none;
    position: relative;
}

.sortable:hover {
    background: rgba(255, 255, 255, 0.1);
}

.sort-icon {
    font-size: 0.8rem;
    margin-left: 5px;
    opacity: 0.5;
    transition: all 0.2s ease;
}

.sortable.asc .sort-icon {
    opacity: 1;
    transform: rotate(180deg);
}

.sortable.desc .sort-icon {
    opacity: 1;
    transform: rotate(0deg);
}

.sortable.asc .sort-icon:before {
    content: "\f143";
}

.sortable.desc .sort-icon:before {
    content: "\f144";
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-light);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.1rem; }
h4 { font-size: 1rem; }
h5 { font-size: 0.9rem; }
h6 { font-size: 0.8rem; }

p {
    margin-bottom: 0.8rem;
    line-height: 1.5;
}

.ticket-details-modal .modal-body {
    max-height: 70vh;
    overflow-y: auto;
}

.ticket-details-modal .card-header {
    padding: 0.6rem 1rem;
}

.ticket-details-modal .card-body {
    padding: 0.8rem;
}