/* Custom styles for GapIQ MCQ Test System */

/* Color Variables */
:root {
    --primary-green: #4CAF50;
    --primary-blue: #2196F3;
    --primary-red: #F44336;
    --primary-yellow: #FFEB3B;
    --text-dark: #333333;
    --bg-white: #ffffff;
    --light-gray: #f8f9fa;
    --border-gray: #dee2e6;
    --hover-green: #45a049;
    --hover-blue: #1976D2;
}

/* Body and layout improvements */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: var(--bg-white);
    color: var(--text-dark);
}

/* Header and Navigation enhancements */
.header {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: white !important;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    background-color: white;
    padding: 5px;
}

.site-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

/* Card hover effects */
.card {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    border: 1px solid var(--border-gray);
    background-color: var(--bg-white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

/* Collapsible subject cards */
.card .btn-link {
    color: var(--text-dark);
    text-decoration: none;
}

.card .btn-link:hover {
    color: var(--primary-blue);
}

/* Chevron rotation animation */
.card .btn-link .fa-chevron-down {
    transition: transform 0.3s ease;
}

.card .btn-link[aria-expanded="false"] .fa-chevron-down {
    transform: rotate(-90deg);
}

.card .btn-link[aria-expanded="true"] .fa-chevron-down {
    transform: rotate(0deg);
}

/* Faded/disabled appearance for locked tests */
.card.locked-test {
    opacity: 0.6;
    position: relative;
}

.card.locked-test::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.3);
    pointer-events: none;
    z-index: 1;
    border-radius: inherit;
}

.card.locked-test .card-header,
.card.locked-test .card-body,
.card.locked-test .card-footer {
    position: relative;
    z-index: 2;
}

.card.locked-test:hover {
    transform: none;
    opacity: 0.7;
}

.card-header {
    background-color: var(--light-gray);
    border-bottom: 1px solid var(--border-gray);
}

/* Form improvements */
.form-control {
    border: 2px solid var(--border-gray);
    border-radius: 8px;
    padding: 0.75rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(33, 150, 243, 0.25);
    outline: none;
}

.form-check-input:checked {
    background-color: var(--primary-green);
    border-color: var(--primary-green);
}

.form-check-label {
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s ease;
    color: var(--text-dark);
}

.form-check-label:hover {
    background-color: var(--light-gray);
}

.form-check-input:checked + .form-check-label {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--primary-green);
    font-weight: 600;
}

/* Progress bars for results */
.progress {
    height: 1.5rem;
    border-radius: 0.5rem;
}

.progress-bar {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Alert enhancements */
.alert {
    border: none;
    border-radius: 8px;
    border-left: 4px solid;
}

.alert-success {
    background-color: rgba(76, 175, 80, 0.1);
    border-left-color: var(--primary-green);
    color: var(--primary-green);
}

.alert-danger {
    background-color: rgba(244, 67, 54, 0.1);
    border-left-color: var(--primary-red);
    color: var(--primary-red);
}

.alert-info {
    background-color: rgba(33, 150, 243, 0.1);
    border-left-color: var(--primary-blue);
    color: var(--primary-blue);
}

.alert-warning {
    background-color: rgba(255, 235, 59, 0.1);
    border-left-color: var(--primary-yellow);
    color: #f57f17;
}

.alert i {
    opacity: 0.8;
}

/* Navigation link improvements */
.nav-link {
    color: white !important;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-yellow) !important;
    text-shadow: 0 0 8px rgba(255, 235, 59, 0.5);
}

.navbar-text {
    color: white !important;
    font-weight: 500;
}

.btn-outline-light {
    border: 2px solid white;
    color: white;
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    background-color: white;
    color: var(--primary-blue);
}

/* Button improvements */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.875rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--hover-blue));
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--hover-blue), var(--primary-blue));
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--primary-green), var(--hover-green));
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--hover-green), var(--primary-green));
    color: white;
}

.btn-secondary {
    background-color: var(--light-gray);
    color: var(--text-dark);
    border: 2px solid var(--border-gray);
}

.btn-secondary:hover {
    background-color: var(--border-gray);
    color: var(--text-dark);
}

.btn-outline-primary {
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    background-color: transparent;
}

.btn-outline-primary:hover {
    background-color: var(--primary-blue);
    color: white;
}

/* Statistics cards */
.card-body i.fa-2x, .card-body i.fa-3x {
    opacity: 0.8;
}

.text-primary {
    color: var(--primary-blue) !important;
}

.text-success {
    color: var(--primary-green) !important;
}

.text-warning {
    color: #f57f17 !important;
}

.text-danger {
    color: var(--primary-red) !important;
}

.text-info {
    color: var(--primary-blue) !important;
}

/* Badge improvements */
.badge {
    font-weight: 600;
    letter-spacing: 0.025em;
    padding: 0.5rem 0.75rem;
}

.bg-secondary {
    background-color: var(--text-dark) !important;
}

.bg-info {
    background-color: var(--primary-blue) !important;
}

.bg-success {
    background-color: var(--primary-green) !important;
}

.bg-warning {
    background-color: var(--primary-yellow) !important;
    color: var(--text-dark) !important;
}

.bg-danger {
    background-color: var(--primary-red) !important;
}

/* Test question cards */
.card-header h5 {
    margin-bottom: 0;
}

/* Responsive improvements */
@media (max-width: 768px) {
    .d-flex.gap-3 {
        flex-direction: column;
        gap: 0.5rem !important;
    }
    
    .btn {
        width: 100%;
    }
    
    .card-body .row [class*="col-"] {
        margin-bottom: 1rem;
    }
}

/* Loading states */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Custom spacing */
.gap-3 {
    gap: 1rem !important;
}

/* Footer */
footer {
    border-top: 1px solid var(--bs-border-color);
    margin-top: auto;
}

/* Ensure minimum height for full viewport coverage */
html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Test form specific styles */
#testForm .card {
    border-left: 4px solid var(--primary-blue);
}

#testForm .form-check {
    padding: 0.75rem;
    margin: 0.25rem 0;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

#testForm .form-check:hover {
    background-color: var(--bs-secondary-bg);
}

/* Result page specific styles */
.text-center h2.text-primary,
.text-center h2.text-warning,
.text-center h2.text-success,
.text-center h2.text-info,
.text-center h2.text-danger {
    font-weight: 700;
    margin-bottom: 0;
}

/* Badge improvements */
.badge {
    font-weight: 500;
    letter-spacing: 0.025em;
}

/* Input group improvements */
.input-group-text {
    background-color: var(--light-gray);
    border: 2px solid var(--border-gray);
    color: var(--text-dark);
    font-weight: 500;
}

/* Enhanced focus states */
.form-check-input:focus {
    box-shadow: 0 0 0 0.25rem rgba(76, 175, 80, 0.25);
    border-color: var(--primary-green);
}

/* Progress bar improvements */
.progress {
    height: 1.5rem;
    border-radius: 8px;
    background-color: var(--light-gray);
}

.progress-bar {
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 6px;
}

.bg-success .progress-bar,
.progress-bar.bg-success {
    background-color: var(--primary-green) !important;
}

.bg-danger .progress-bar,
.progress-bar.bg-danger {
    background-color: var(--primary-red) !important;
}

/* Premium overlay styles */
.premium-overlay {
    backdrop-filter: blur(2px);
    border: 2px dashed #ffc107;
    animation: premium-pulse 2s infinite;
    min-height: 300px;
}

.premium-overlay:hover {
    background: rgba(255, 193, 7, 0.15) !important;
    transform: scale(1.01);
    transition: all 0.3s ease;
}

@keyframes premium-pulse {
    0%, 100% { 
        border-color: #ffc107; 
        box-shadow: 0 0 5px rgba(255, 193, 7, 0.3);
    }
    50% { 
        border-color: #ffb800; 
        box-shadow: 0 0 15px rgba(255, 193, 7, 0.5);
    }
}

.premium-content {
    pointer-events: none;
    user-select: none;
}

/* Premium responsive design */
@media (max-width: 768px) {
    .premium-overlay .text-center {
        padding: 2rem 1rem !important;
    }
    
    .premium-overlay h3 {
        font-size: 1.5rem;
    }
    
    .premium-overlay .btn-lg {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }
}