/* PVMA School Fee Management System - Custom Styles */

/* Root Variables */
:root {
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    
    --gradient-primary: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    --gradient-success: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    --gradient-warning: linear-gradient(135deg, #ffc107 0%, #fd7e14 100%);
    --gradient-info: linear-gradient(135deg, #17a2b8 0%, #6f42c1 100%);
    
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 1rem;
    
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f5f7fa;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(0, 123, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(40, 167, 69, 0.05) 0%, transparent 50%);
}

/* Enhanced Card Styles */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1.25rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* Gradient Backgrounds */
.bg-gradient-primary {
    background: var(--gradient-primary) !important;
}

.bg-gradient-success {
    background: var(--gradient-success) !important;
}

.bg-gradient-warning {
    background: var(--gradient-warning) !important;
}

.bg-gradient-info {
    background: var(--gradient-info) !important;
}

/* Enhanced Navigation */
.navbar {
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    transform: translateY(-1px);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
}

/* Enhanced Buttons */
.btn {
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
}

.btn-success {
    background: var(--gradient-success);
    border: none;
}

.btn-warning {
    background: var(--gradient-warning);
    border: none;
    color: var(--dark-color);
}

.btn-info {
    background: var(--gradient-info);
    border: none;
}

/* Enhanced Form Controls */
.form-control, .form-select {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.15);
    transform: translateY(-1px);
}

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.75rem;
}

/* Enhanced Tables */
.table {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table thead th {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
    padding: 1rem;
}

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

.table tbody tr:hover {
    background-color: rgba(0, 123, 255, 0.05);
    transform: scale(1.01);
}

.table tbody td {
    padding: 1rem;
    border-color: rgba(0, 0, 0, 0.05);
    vertical-align: middle;
}

/* Enhanced Badges */
.badge {
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

/* Enhanced Alerts */
.alert {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid;
}

.alert-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(32, 201, 151, 0.1) 100%);
    border-left-color: var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1) 0%, rgba(231, 74, 59, 0.1) 100%);
    border-left-color: var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1) 0%, rgba(253, 126, 20, 0.1) 100%);
    border-left-color: var(--warning-color);
}

.alert-info {
    background: linear-gradient(135deg, rgba(23, 162, 184, 0.1) 0%, rgba(111, 66, 193, 0.1) 100%);
    border-left-color: var(--info-color);
}

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

@keyframes slideInUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-slide-up {
    animation: slideInUp 0.5s ease-out;
}

.animate-fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* School Logo Styles */
.school-logo {
    position: relative;
}

.school-logo::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border: 3px solid rgba(0, 123, 255, 0.2);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

/* Avatar Styles */
.avatar-sm, .avatar-lg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: bold;
    position: relative;
    overflow: hidden;
}

.avatar-sm {
    width: 40px;
    height: 40px;
    font-size: 16px;
}

.avatar-lg {
    width: 60px;
    height: 60px;
    font-size: 24px;
}

.avatar-sm::before, .avatar-lg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.3));
    border-radius: 50%;
}

/* Bill Styles */
.bill-header {
    position: relative;
}

.bill-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .card-body {
        padding: 1rem;
    }
    
    .table-responsive {
        border-radius: var(--border-radius);
    }
    
    .btn {
        padding: 0.75rem 1rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .card:hover {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    .table thead th,
    .table tbody td {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --dark-color: #f8f9fa;
        --light-color: #343a40;
    }
    
    body {
        background-color: #1a1a1a;
        color: var(--dark-color);
    }
    
    .card {
        background-color: #2d2d2d;
        color: var(--dark-color);
    }
    
    .card-header {
        background: linear-gradient(135deg, #2d2d2d 0%, #3d3d3d 100%);
    }
    
    .table {
        color: var(--dark-color);
    }
    
    .table thead th {
        background: linear-gradient(135deg, #3d3d3d 0%, #4d4d4d 100%);
    }
    
    .form-control, .form-select {
        background-color: #3d3d3d;
        border-color: #4d4d4d;
        color: var(--dark-color);
    }
}

/* Print Styles */
@media print {
    body {
        background: white !important;
        color: black !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }
    
    .btn, .navbar, .breadcrumb {
        display: none !important;
    }
    
    .no-print {
        display: none !important;
    }
    
    .print-only {
        display: block !important;
    }
}

/* Utility Classes */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.border-gradient {
    border: 2px solid;
    border-image: var(--gradient-primary) 1;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hover-lift {
    transition: var(--transition);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Focus Styles for Accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Loading Spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Success Animation */
@keyframes checkmark {
    0% {
        stroke-dashoffset: 100;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

.checkmark {
    stroke-dasharray: 100;
    animation: checkmark 0.5s ease-in-out;
}

/* Error Shake Animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

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

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition);
    z-index: 1000;
}

.fab:hover {
    transform: scale(1.1);
    box-shadow: 0 1rem 2rem rgba(0, 123, 255, 0.3);
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.5rem;
    z-index: 1050;
    transform: translateX(100%);
    transition: var(--transition);
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left: 4px solid var(--success-color);
}

.notification.error {
    border-left: 4px solid var(--danger-color);
}

/* Progress Bar */
.progress {
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    background-color: rgba(0, 123, 255, 0.1);
}

.progress-bar {
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

/* Tooltip Enhancement */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background: var(--dark-color);
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
}

/* Modal Enhancement */
.modal-content {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

/* Dropdown Enhancement */
.dropdown-menu {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    transition: var(--transition-fast);
}

.dropdown-item:hover {
    background: rgba(0, 123, 255, 0.1);
    transform: translateX(5px);
}

/* Breadcrumb Enhancement */
.breadcrumb {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    padding: 1rem 1.5rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    font-weight: bold;
    color: var(--primary-color);
}