/* Custom styles for IELTS Mock Testing System */

:root {
    --primary-color: #2acd0e;
    --primary-hover: #d4451f;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --light-bg: #f8fafc;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
    background-attachment: fixed;
    color: #1e293b;
    line-height: 1.6;
}

/* Navbar Styles */
.navbar-brand {
    font-weight: 700;
    font-size: 1.35rem;
    transition: var(--transition);
}

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

/* Card Styles */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    margin-bottom: 24px;
    transition: var(--transition);
    background: white;
}

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

.card-header {
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    background: linear-gradient(135deg, #E75225 0%, #ff6b45 100%);
    color: white;
    font-weight: 600;
    border: none;
}

.card-body {
    padding: 2rem;
}

/* Login Page Styles */
.min-vh-100 {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    animation: fadeInUp 0.6s ease;
}

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

/* Form Styles */
.form-control {
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1.1rem;
    transition: var(--transition);
    background-color: #f8fafc;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(231, 82, 37, 0.1);
    background-color: white;
    outline: none;
}

.form-control::placeholder {
    color: #94a3b8;
}

.form-label {
    font-weight: 600;
    color: #475569;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-label i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

/* Button Styles */
.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, #E75225 0%, #ff6b45 100%);
    box-shadow: 0 4px 6px -1px rgba(231, 82, 37, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #d4451f 0%, #e65533 100%);
    box-shadow: 0 10px 15px -3px rgba(231, 82, 37, 0.4);
    transform: translateY(-2px);
}

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

.btn-success {
    background-color: var(--success-color);
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background-color: #059669;
    transform: translateY(-2px);
}

.btn-danger {
    background-color: var(--danger-color);
    box-shadow: 0 4px 6px -1px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
}

.btn-warning {
    background-color: var(--warning-color);
    box-shadow: 0 4px 6px -1px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    background-color: #d97706;
    transform: translateY(-2px);
}

.btn-info {
    background-color: var(--info-color);
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.3);
}

.btn-info:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
}

/* Table Styles */
.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: #f8fafc;
    border-bottom: 2px solid #e2e8f0;
    color: #475569;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    padding: 1rem;
}

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

.table tbody tr:hover {
    background-color: #f8fafc;
    transform: scale(1.01);
}

/* Badge Styles */
.badge {
    padding: 0.45em 0.85em;
    font-size: 0.85em;
    border-radius: 6px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Dashboard cards
.card-body h2 {
    font-weight: 700;
    background: linear-gradient(135deg, #E75225 0%, #ff6b45 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
} */

/* Alert messages */
.alert {
    border-radius: 8px;
    border: none;
    box-shadow: var(--card-shadow);
    animation: slideInRight 0.4s ease;
}

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

.alert-dismissible .btn-close {
    padding: 1rem;
}

/* Loading Spinner */
.spinner-border {
    width: 1.5rem;
    height: 1.5rem;
}

/* Icon Styles */
.fas, .far, .fab {
    transition: var(--transition);
}

.card-body i.fas.fa-graduation-cap {
    font-size: 3rem;
    color: var(--primary-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.65rem 1.25rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .card-body {
        padding: 1rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus Visible for Accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Text Highlighter Styles */
mark[data-highlight-section] {
    display: inline !important;
    white-space: normal !important;
    word-break: normal !important;
    line-height: inherit !important;
    vertical-align: baseline !important;
    box-decoration-break: clone !important;
    -webkit-box-decoration-break: clone !important;
}

/* Format-only marks (no background color) */
mark[data-highlight-section][data-highlight-color="-1"] {
    background-color: transparent !important;
}

/* Prevent flex containers from breaking highlighted text */
p mark[data-highlight-section],
div mark[data-highlight-section],
span mark[data-highlight-section] {
    flex: none !important;
}