/* Custom CSS for School Payment System */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    padding: 48px 0 0;
    box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
}

.sidebar-sticky {
    position: relative;
    top: 0;
    height: calc(100vh - 48px);
    padding-top: .5rem;
    overflow-x: hidden;
    overflow-y: auto;
}

.sidebar .nav-link {
    color: #333;
    padding: 10px 15px;
    margin: 2px 10px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover {
    background-color: #e9ecef;
    color: #007bff;
}

.sidebar .nav-link.active {
    background-color: #007bff;
    color: white;
}

.sidebar .nav-link i {
    margin-right: 8px;
    width: 16px;
    text-align: center;
}

main {
    margin-top: 20px;
}

.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border: 1px solid rgba(0, 0, 0, 0.125);
    margin-bottom: 20px;
}

.card-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
    font-weight: 600;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

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

.table th {
    background-color: #f8f9fa;
    border-top: none;
    font-weight: 600;
}

.badge {
    font-size: 0.75em;
}

.alert {
    border: none;
    border-radius: 8px;
}

/* Dashboard cards */
.dashboard-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
}

.dashboard-card.success {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.dashboard-card.warning {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.dashboard-card.danger {
    background: linear-gradient(135deg, #ff6b6b 0%, #ffa500 100%);
}

.dashboard-card .card-body {
    padding: 1.5rem;
}

.dashboard-card h3 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

/* Form styling */
.form-control:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-select:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Login page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    max-width: 400px;
    width: 100%;
}

.login-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.login-body {
    padding: 2rem;
}

/* Receipt styling */
.receipt {
    background: white;
    border: 2px solid #000;
    padding: 20px;
    font-family: 'Courier New', monospace;
    max-width: 400px;
    margin: 0 auto;
}

.receipt-header {
    text-align: center;
    border-bottom: 2px dashed #000;
    padding-bottom: 10px;
    margin-bottom: 15px;
}

.receipt-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

.receipt-total {
    border-top: 2px dashed #000;
    padding-top: 10px;
    margin-top: 10px;
    font-weight: bold;
}

.receipt-footer {
    text-align: center;
    margin-top: 15px;
    border-top: 2px dashed #000;
    padding-top: 10px;
}

/* Chat styling */
.chat-container {
    height: 500px;
    overflow-y: auto;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 15px;
    background-color: #f8f9fa;
}

.chat-message {
    margin-bottom: 15px;
    padding: 10px;
    border-radius: 8px;
    background-color: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.chat-message.own {
    background-color: #007bff;
    color: white;
    margin-left: 50px;
}

.chat-message.other {
    background-color: white;
    margin-right: 50px;
}

.chat-input {
    border-top: 1px solid #dee2e6;
    padding-top: 15px;
    margin-top: 15px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .sidebar {
        position: relative;
        height: auto;
    }
    
    main {
        margin-top: 0;
    }
    
    .dashboard-card h3 {
        font-size: 1.5rem;
    }
}

/* Print styles */
@media print {
    .sidebar, .btn, .no-print {
        display: none !important;
    }
    
    main {
        margin-left: 0 !important;
    }
    
    .receipt {
        border: 2px solid #000;
        box-shadow: none;
    }
}