/* ========================================
   Expense Tracker - Custom Styles
   ======================================== */

/* Global Styles */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Navigation Styles */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.4rem;
}

.nav-link {
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    transform: translateY(-2px);
}

/* Card Styles */
.card {
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
}

.card-header {
    border-top-left-radius: 12px !important;
    border-top-right-radius: 12px !important;
    font-weight: 600;
}

/* Button Styles */
.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-primary {
    background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
    border: none;
}

.btn-success {
    background: linear-gradient(135deg, #198754 0%, #146c43 100%);
    border: none;
}

.btn-danger {
    background: linear-gradient(135deg, #dc3545 0%, #bb2d3b 100%);
    border: none;
}

/* Badge Styles */
.badge {
    padding: 0.5em 0.75em;
    border-radius: 6px;
    font-weight: 500;
}

/* Form Styles */
.form-control,
.form-select {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* Table Styles */
.table {
    border-radius: 8px;
    overflow: hidden;
}

.table thead th {
    background-color: var(--light-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    border-bottom: 2px solid #dee2e6;
}

.table thead th a {
    display: inline-block;
    cursor: pointer;
    transition: color 0.3s ease;
}

.table thead th a:hover {
    color: var(--primary-color) !important;
}

.table thead th a i {
    margin-left: 5px;
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.table thead th a:hover i {
    transform: scale(1.2);
}

.table tbody tr {
    transition: all 0.3s ease;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
    transform: scale(1.01);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* Alert Styles */
.alert {
    border-radius: 8px;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Pagination Styles */
.pagination {
    margin-top: 2rem;
}

.page-link {
    border-radius: 6px;
    margin: 0 3px;
    color: var(--primary-color);
    border: 1px solid #dee2e6;
    transition: all 0.3s ease;
}

.page-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Dashboard Stats Cards */
.stats-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    padding: 1.5rem;
    color: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* List Group Styles */
.list-group-item {
    border: none;
    border-bottom: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.list-group-item:hover {
    background-color: #f8f9fa;
    padding-left: 1.5rem;
}

/* Footer Styles */
footer {
    background-color: white;
    border-top: 1px solid #e9ecef;
    margin-top: auto;
}

/* Utility Classes */
.shadow-sm {
    box-shadow: 0 2px 8px rgba(0,0,0,0.08) !important;
}

.shadow {
    box-shadow: 0 4px 12px rgba(0,0,0,0.12) !important;
}

.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Chart Container */
canvas {
    max-height: 400px;
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .card {
        margin-bottom: 1rem;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
    
    .display-6 {
        font-size: 1.5rem;
    }
}

/* Print Styles */
@media print {
    .navbar,
    footer,
    .btn,
    .pagination {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        page-break-inside: avoid;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Category Badge Colors */
.badge.bg-food { background-color: #fd7e14 !important; }
.badge.bg-transport { background-color: #0dcaf0 !important; }
.badge.bg-utilities { background-color: #6610f2 !important; }
.badge.bg-entertainment { background-color: #d63384 !important; }
.badge.bg-healthcare { background-color: #198754 !important; }
.badge.bg-education { background-color: #0d6efd !important; }
.badge.bg-shopping { background-color: #ffc107 !important; color: #000 !important; }
.badge.bg-housing { background-color: #6f42c1 !important; }

/* Empty State Styles */
.empty-state {
    padding: 4rem 2rem;
    text-align: center;
}

.empty-state i {
    opacity: 0.3;
}

/* Focus Visible */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}