/* Student Info Simple CSS - Cross Platform Compatible */

/* Reset and Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* Container */
.container-fluid {
    padding: 0 15px;
}

/* Cards */
.card {
    border: 1px solid #e9ecef;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 1rem;
}

.card-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    padding: 1rem;
    font-weight: 600;
}

.card-body {
    padding: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    margin-bottom: 0;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    border: 1px solid transparent;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.15s ease-in-out;
}

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

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

.btn-outline-secondary {
    color: #6c757d;
    background-color: transparent;
    border-color: #6c757d;
}

.btn-outline-secondary:hover {
    color: #fff;
    background-color: #6c757d;
    border-color: #6c757d;
}

/* Forms */
.form-control {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 4px;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    color: #495057;
    background-color: #fff;
    border-color: #80bdff;
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

.form-label {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

/* Tables */
.table {
    width: 100%;
    margin-bottom: 0;
    color: #212529;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.75rem;
    vertical-align: top;
    border-top: 1px solid #dee2e6;
}

.table thead th {
    vertical-align: bottom;
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
}

.table-hover tbody tr:hover {
    background-color: rgba(0,0,0,0.075);
}

.table-responsive {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25em 0.4em;
    font-size: 0.75em;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.25rem;
}

.badge.bg-primary {
    color: #fff;
    background-color: #007bff;
}

.badge.bg-secondary {
    color: #fff;
    background-color: #6c757d;
}

.badge.bg-success {
    color: #fff;
    background-color: #28a745;
}

.badge.bg-danger {
    color: #fff;
    background-color: #dc3545;
}

.badge.bg-warning {
    color: #212529;
    background-color: #ffc107;
}

.badge.bg-info {
    color: #fff;
    background-color: #17a2b8;
}

.badge.bg-light {
    color: #212529;
    background-color: #f8f9fa;
}

/* Alerts */
.alert {
    position: relative;
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 4px;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeaa7;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

/* Grid System */
.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
}

.col-12 {
    flex: 0 0 100%;
    max-width: 100%;
}

.col-md-3 {
    flex: 0 0 25%;
    max-width: 25%;
}

.col-md-4 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
}

.col-md-6 {
    flex: 0 0 50%;
    max-width: 50%;
}

.col-md-8 {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
}

.col-sm-6 {
    flex: 0 0 50%;
    max-width: 50%;
}

/* Utility Classes */
.d-flex {
    display: flex !important;
}

.justify-content-between {
    justify-content: space-between !important;
}

.justify-content-center {
    justify-content: center !important;
}

.align-items-center {
    align-items: center !important;
}

.align-items-end {
    align-items: flex-end !important;
}

.text-center {
    text-align: center !important;
}

.text-end {
    text-align: right !important;
}

.text-md-end {
    text-align: right !important;
}

.text-muted {
    color: #6c757d !important;
}

.text-primary {
    color: #007bff !important;
}

.text-success {
    color: #28a745 !important;
}

.text-danger {
    color: #dc3545 !important;
}

.text-warning {
    color: #ffc107 !important;
}

.text-info {
    color: #17a2b8 !important;
}

.text-secondary {
    color: #6c757d !important;
}

.fw-medium {
    font-weight: 500 !important;
}

.fw-semibold {
    font-weight: 600 !important;
}

.fw-bold {
    font-weight: 700 !important;
}

.mb-0 {
    margin-bottom: 0 !important;
}

.mb-1 {
    margin-bottom: 0.25rem !important;
}

.mb-2 {
    margin-bottom: 0.5rem !important;
}

.mb-3 {
    margin-bottom: 1rem !important;
}

.mb-4 {
    margin-bottom: 1.5rem !important;
}

.mb-5 {
    margin-bottom: 3rem !important;
}

.mt-1 {
    margin-top: 0.25rem !important;
}

.mt-2 {
    margin-top: 0.5rem !important;
}

.mt-3 {
    margin-top: 1rem !important;
}

.me-1 {
    margin-right: 0.25rem !important;
}

.me-2 {
    margin-right: 0.5rem !important;
}

.me-3 {
    margin-right: 1rem !important;
}

.mx-2 {
    margin-left: 0.5rem !important;
    margin-right: 0.5rem !important;
}

.p-0 {
    padding: 0 !important;
}

.py-5 {
    padding-top: 3rem !important;
    padding-bottom: 3rem !important;
}

.g-3 > * {
    padding-right: 1rem;
    padding-left: 1rem;
}

.g-3 {
    margin-right: -1rem;
    margin-left: -1rem;
}

.h-100 {
    height: 100% !important;
}

.h-2 {
    font-size: 1.5rem;
}

.h-4 {
    font-size: 1.25rem;
}

.h-5 {
    font-size: 1.125rem;
}

.fs-1 {
    font-size: 2.5rem !important;
}

.fs-5 {
    font-size: 1.25rem !important;
}

.fs-6 {
    font-size: 1rem !important;
}

.small {
    font-size: 0.875em;
}

.border-0 {
    border: 0 !important;
}

.border-bottom {
    border-bottom: 1px solid #dee2e6 !important;
}

.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075) !important;
}

.rounded-circle {
    border-radius: 50% !important;
}

.bg-primary {
    background-color: #007bff !important;
}

.bg-info {
    background-color: #17a2b8 !important;
}

.bg-white {
    background-color: #fff !important;
}

.bg-light {
    background-color: #f8f9fa !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .col-md-3,
    .col-md-4,
    .col-md-6,
    .col-md-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .text-md-end {
        text-align: left !important;
    }
    
    .d-flex {
        flex-direction: column;
    }
    
    .justify-content-between {
        justify-content: flex-start !important;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding: 0 10px;
    }
    
    .card-body {
        padding: 0.5rem;
    }
    
    .h-2 {
        font-size: 1.25rem;
    }
    
    .h-4 {
        font-size: 1.125rem;
    }
    
    .fs-1 {
        font-size: 2rem !important;
    }
}

/* Print Styles */
@media print {
    .btn,
    .form-control,
    .card-header {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
    }
    
    .table {
        font-size: 0.75rem;
    }
    
    .badge {
        border: 1px solid #000 !important;
        background-color: transparent !important;
        color: #000 !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid #000;
    }
    
    .btn {
        border: 2px solid #000;
    }
    
    .table th,
    .table td {
        border: 1px solid #000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #fff;
    }
    
    .card {
        background-color: #2d2d2d;
        border-color: #404040;
    }
    
    .card-header {
        background-color: #404040;
        border-bottom-color: #555;
    }
    
    .table {
        color: #fff;
    }
    
    .table th,
    .table td {
        border-color: #404040;
    }
    
    .form-control {
        background-color: #2d2d2d;
        border-color: #404040;
        color: #fff;
    }
    
    .form-control:focus {
        background-color: #2d2d2d;
        border-color: #007bff;
        color: #fff;
    }
}