/* School Accounts Management System - Enhanced Styles */

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --danger-color: #f56565;
    --warning-color: #ed8936;
    --info-color: #4299e1;
    --light-bg: #f7fafc;
    --card-shadow: 0 4px 20px rgba(0,0,0,0.1);
    --border-radius: 10px;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, #9f7aea 100%);
    min-height: 100vh;
    margin: 0;
    color: #333;
    line-height: 1.6;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="80" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="50" r="3" fill="rgba(255,255,255,0.05)"/></svg>') repeat;
    pointer-events: none;
    z-index: -1;
}

.navbar {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
    backdrop-filter: blur(15px);
    padding: 1rem 2rem;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
    transition: var(--transition);
}

.navbar:hover {
    box-shadow: 0 4px 25px rgba(0,0,0,0.12);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand img {
    height: 40px;
    width: auto;
}

.navbar-brand h1 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.3rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #4a5568;
    font-weight: 600;
    padding: 0.7rem 1.4rem;
    border-radius: 30px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 2px solid rgba(102, 126, 234, 0.2);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.9));
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    backdrop-filter: blur(5px);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
    border-color: var(--primary-color);
}

.nav-link.active {
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.page-header {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    border: 1px solid #e2e8f0;
}

.page-header h2 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.6rem;
    font-weight: 700;
}

.page-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
    transition: var(--transition);
    border: 1px solid #e2e8f0;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 35px rgba(0,0,0,0.12);
}

.card h3, .card h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    border-bottom: 3px solid rgba(102, 126, 234, 0.2);
    padding-bottom: 0.5rem;
    font-weight: 600;
}

.table {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
    border: 1px solid #e2e8f0;
}

.table th {
    background: #f8fafc;
    color: #374151;
    border: none;
    padding: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--primary-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.table td {
    border: none;
    vertical-align: middle;
    padding: 1rem;
    border-bottom: 1px solid #f1f5f9;
}

.table tbody tr:nth-child(even) {
    background: #f8fafc;
}

.table tbody tr:nth-child(odd) {
    background: white;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.03);
    transform: scale(1.01);
}

.btn {
    border: 1px solid transparent;
    border-radius: 25px;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.btn-primary { background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); color: white; border-color: var(--primary-color); }
.btn-primary:hover { background: linear-gradient(135deg, #5a67d8, #553c9a); }

.btn-success { background: linear-gradient(135deg, var(--success-color), #38a169); color: white; border-color: var(--success-color); }
.btn-success:hover { background: linear-gradient(135deg, #38a169, #2f855a); }

.btn-danger { background: linear-gradient(135deg, var(--danger-color), #e53e3e); color: white; border-color: var(--danger-color); }
.btn-danger:hover { background: linear-gradient(135deg, #e53e3e, #c53030); }

.btn-warning { background: linear-gradient(135deg, var(--warning-color), #dd6b20); color: white; border-color: var(--warning-color); }
.btn-warning:hover { background: linear-gradient(135deg, #dd6b20, #b7791f); }

.btn-info { background: linear-gradient(135deg, var(--info-color), #3182ce); color: white; border-color: var(--info-color); }
.btn-info:hover { background: linear-gradient(135deg, #3182ce, #2c5282); }

.btn-secondary { background: linear-gradient(135deg, #718096, #4a5568); color: white; border-color: #718096; }
.btn-secondary:hover { background: linear-gradient(135deg, #4a5568, #2d3748); }

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.form-control, .form-select {
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 0.75rem;
    margin-bottom: 1rem;
    transition: var(--transition);
    font-size: 0.95rem;
    width: 100%;
    background: #f8fafc;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}

/* Print helpers: hide print-only elements on screen, hide no-print on print */
.print-only { display: none; }
.no-print { display: inline-block; }
@media print {
    .print-only { display: block !important; }
    .no-print { display: none !important; }
}

.alert {
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 0.5rem;
    margin-bottom: 0.6rem;
}

.stat-card {
    background: white;
    padding: 0.5rem 0.8rem;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    text-align: center;
    transition: none;
    position: relative;
    overflow: hidden;
    border: 1px solid #eef2f6;
    padding-right: 1rem;
    min-height: 48px;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0.4rem;
    right: 0.4rem;
    width: 18px;
    height: 18px;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 50%;
    display: block;
    font-size: 0.8rem;
    color: var(--primary-color);
    pointer-events: none;
    z-index: 0;
}

.stat-card:nth-child(1)::after { /* decorative - no emoji */ }
.stat-card:nth-child(2)::after { /* decorative - no emoji */ }
.stat-card:nth-child(3)::after { /* decorative - no emoji */ }
.stat-card:nth-child(4)::after { /* decorative - no emoji */ }

.stat-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.stat-card h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 0.95rem; /* compact amount size */
    font-weight: 700;
    position: relative; z-index: 1;
}

/* Smaller, muted amount helper */
.amount {
    font-size: 1.05rem;
    color: #2d3748;
    font-weight: 700;
    white-space: nowrap;
    position: relative; z-index: 1;
}

.stat-card p {
    margin: 0.08rem 0 0 0;
    color: #666;
    font-weight: 600;
    font-size: 0.72rem; /* compact label */
}

/* Compact variant for ultra-dense dashboard tiles */
.stat-card.compact {
    padding: 0.25rem 0.5rem;
    min-height: 36px;
    border-radius: 6px;
}
.stat-card.compact::after {
    width: 12px;
    height: 12px;
    top: 0.35rem;
    right: 0.35rem;
}
.stat-card.compact h3 {
    font-size: 0.85rem;
}
.stat-card.compact p {
    font-size: 0.64rem;
    margin-top: 0.04rem;
}
.stat-card:hover { transform: none; box-shadow: 0 6px 14px rgba(0,0,0,0.05); }

.search-bar {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-bar input, .search-bar select {
    flex: 1;
    min-width: 200px;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.table-responsive {
    overflow-x: auto;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .page-header {
        flex-direction: column;
        text-align: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .search-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .table {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .navbar-brand h1 {
        font-size: 1.1rem;
    }
    
    .nav-link {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .stat-card {
        padding: 1.5rem;
    }
    
    .stat-card h3 {
        font-size: 1.6rem;
    }
}

/* Term fees view tweaks: narrower centered layout and compact term-period card */
.term-fees-container { max-width: 1000px; margin: 1.2rem auto; padding: 0 1rem; }
.term-fees-container .card { padding: 1rem; margin-bottom: 1rem; }
.term-period-card { padding: 0.6rem 0.8rem; border-radius: 8px; }
.term-period-card .form-control, .term-period-card .form-select { padding: 0.45rem 0.6rem; height: 38px; font-size: 0.95rem; }
.term-period-card label { font-size: 0.85rem; margin-bottom: 0.25rem; }
.term-period-card .row.g-2 { gap: 0.5rem; }
.term-period-card .btn { padding: 0.45rem 0.9rem; font-size: 0.85rem; }

/* Reduce white space in tables on term fees page */
.term-fees-container .table td, .term-fees-container .table th { padding: 0.6rem 0.75rem; }