:root {
    --primary: #6f42c1;
    --primary-dark: #55309a;
    --primary-light: #e8dff5;
    --gradient-start: #6f42c1;
    --gradient-end: #9058d6;
    --bg-light: #f8f7fc;
    --card-shadow: 0 2px 12px rgba(111, 66, 193, 0.1);
}

body {
    background: var(--bg-light);
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    min-height: 100vh;
}

.navbar {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) !important;
    box-shadow: 0 2px 15px rgba(111, 66, 193, 0.3);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.5px;
}

.navbar .btn-outline-light:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.5);
}

.navbar .btn-outline-light i {
    font-size: 1.1rem;
}

/* Cards */
.card {
    border: none;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(111, 66, 193, 0.15);
}

.project-card {
    cursor: pointer;
}

.project-card .card-header {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border-radius: 16px 16px 0 0 !important;
    padding: 1.25rem;
    border: none;
}

.project-card .card-header h5 {
    font-weight: 600;
    margin: 0;
}

.stat-card {
    border-radius: 12px;
    padding: 1.25rem;
    height: 100%;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: #6c757d;
    margin-bottom: 0.25rem;
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-income { background: #d4edda; }
.stat-income .stat-icon { background: #28a745; color: white; }
.stat-income .stat-value { color: #155724; }

.stat-expense { background: #f8d7da; }
.stat-expense .stat-icon { background: #dc3545; color: white; }
.stat-expense .stat-value { color: #721c24; }

.stat-profit { background: #cce5ff; }
.stat-profit .stat-icon { background: var(--primary); color: white; }
.stat-profit .stat-value { color: #004085; }

.stat-pending-income { background: #fff3cd; }
.stat-pending-income .stat-icon { background: #ffc107; color: #856404; }
.stat-pending-income .stat-value { color: #856404; }

.stat-pending-expense { background: #e2e3e5; }
.stat-pending-expense .stat-icon { background: #6c757d; color: white; }
.stat-pending-expense .stat-value { color: #383d41; }

/* Table */
.table-container {
    overflow-x: auto;
}

.table th {
    border-top: none;
    color: #6c757d;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    vertical-align: middle;
}

.badge-income {
    background: #d4edda;
    color: #155724;
}

.badge-expense {
    background: #f8d7da;
    color: #721c24;
}

.badge-paid {
    background: #d4edda;
    color: #155724;
}

.badge-pending {
    background: #fff3cd;
    color: #856404;
}

/* Action buttons */
.btn-action {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.15s;
}

.btn-action:hover {
    transform: scale(1.1);
}

/* Modal */
.modal-content {
    border: none;
    border-radius: 16px;
}

.modal-header {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border-radius: 16px 16px 0 0;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

/* Status badge */
.status-badge {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
}

.status-active { background: #28a745; }
.status-archived { background: #6c757d; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #6c757d;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Loading */
.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 4rem;
}

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

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

/* Page header */
.page-header {
    margin-bottom: 1.5rem;
}

.page-header h4 {
    font-weight: 700;
    color: #2d2d2d;
}

/* Responsive */
@media (max-width: 768px) {
    .stat-card .stat-value {
        font-size: 1.2rem;
    }
    .project-card .card-header {
        padding: 1rem;
    }
}

/* Year tabs */
.year-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.year-tab {
    background: white;
    border: 2px solid #e0d6f2;
    border-radius: 12px;
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    min-width: 100px;
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.year-tab:hover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
}

.year-tab.active {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
}

.year-tab.active .year-tab-count {
    color: rgba(255,255,255,0.8);
}

.year-tab-year {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
}

.year-tab-count {
    font-size: 0.75rem;
    color: #6c757d;
}

/* Year summary card */
.year-summary-card {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
}

.summary-item {
    text-align: center;
    padding: 1rem;
    border-radius: 12px;
}

.summary-income { background: #d4edda; }
.summary-expense { background: #f8d7da; }
.summary-profit { background: #cce5ff; }

.summary-label {
    font-size: 0.85rem;
    color: #6c757d;
    margin-bottom: 0.25rem;
}

.summary-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.summary-income .summary-value { color: #155724; }
.summary-expense .summary-value { color: #721c24; }
.summary-profit .summary-value { color: #004085; }

/* Navbar nav links */
.navbar-nav .nav-link {
    color: rgba(255,255,255,0.85) !important;
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    margin: 0 0.15rem;
    transition: background 0.2s;
}

.navbar-nav .nav-link:hover {
    background: rgba(255,255,255,0.15);
    color: white !important;
}