/**
 * Custom Styles for QuizCraft
 */

:root {
    --primary: #0d6efd;
    --success: #198754;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #0dcaf0;
}

/* Layout */
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Difficulty Badges */
.badge.bg-easy {
    background-color: var(--success) !important;
}

.badge.bg-medium {
    background-color: var(--warning) !important;
    color: #000 !important;
}

.badge.bg-hard {
    background-color: var(--danger) !important;
}

/* Card Hover Effects */
.card {
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

/* Quiz Timer */
.quiz-timer {
    position: fixed;
    top: 70px;
    right: 20px;
    z-index: 1000;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Question Cards */
.question-card {
    border-left: 4px solid var(--primary);
}

.question-card.correct {
    border-left-color: var(--success);
    background-color: #d1e7dd;
}

.question-card.incorrect {
    border-left-color: var(--danger);
    background-color: #f8d7da;
}

/* Form Styling */
.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Buttons */
.btn {
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

/* Stats Cards */
.stat-card {
    text-align: center;
    padding: 2rem;
    border-radius: 0.5rem;
}

.stat-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.stat-card h3 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

/* Navigation */
.navbar-brand {
    font-family: 'Fraunces', serif;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
}
.navbar-brand i {
    background: linear-gradient(135deg, #34d399, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.4rem;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Footer */
footer {
    margin-top: auto;
}

/* Premium Footer */
.qc-footer {
    position: relative;
    background: var(--qc-deep);
    overflow: hidden;
    --qc-night: #0c1222;
    --qc-deep: #131b33;
    --qc-card: #1a2540;
    --qc-border: rgba(255, 255, 255, 0.06);
    --qc-text: #94a3c4;
    --qc-text-light: #c8d4eb;
    --qc-white: #f0f4ff;
    --qc-mint: #34d399;
    --qc-mint-glow: rgba(52, 211, 153, 0.15);
    --qc-violet: #8b5cf6;
    --qc-violet-glow: rgba(139, 92, 246, 0.15);
    --qc-amber: #fbbf24;
}
.qc-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--qc-mint), var(--qc-violet), transparent);
    opacity: 0.5;
}
.qc-footer__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
    opacity: 0.35;
}
.qc-footer__orb--mint {
    width: 400px;
    height: 400px;
    background: var(--qc-mint);
    bottom: -200px;
    left: -100px;
    opacity: 0.12;
}
.qc-footer__orb--violet {
    width: 350px;
    height: 350px;
    background: var(--qc-violet);
    top: -180px;
    right: -50px;
    opacity: 0.1;
}
.qc-cta-band {
    position: relative;
    z-index: 2;
    padding: 3rem 0;
}
.qc-cta-card {
    background: linear-gradient(135deg, var(--qc-card), rgba(139, 92, 246, 0.08));
    border: 1px solid var(--qc-border);
    border-radius: 20px;
    padding: 3rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.5rem;
    position: relative;
    overflow: hidden;
}
.qc-cta-card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.4), transparent);
}
.qc-cta-card__text h3 {
    font-family: 'Fraunces', serif;
    font-weight: 700;
    font-size: 1.65rem;
    color: var(--qc-white);
    margin-bottom: 0.4rem;
    letter-spacing: -0.02em;
}
.qc-cta-card__text p {
    color: var(--qc-text);
    margin: 0;
    font-size: 0.95rem;
    max-width: 460px;
}
.qc-cta-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.qc-btn-primary {
    background: var(--qc-mint);
    color: var(--qc-night);
    border: none;
    padding: 0.7rem 1.75rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    box-shadow: 0 0 20px var(--qc-mint-glow);
}
.qc-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--qc-mint-glow);
    color: var(--qc-night);
}
.qc-btn-ghost {
    background: transparent;
    color: var(--qc-text-light);
    border: 1px solid var(--qc-border);
    padding: 0.7rem 1.75rem;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}
.qc-btn-ghost:hover {
    border-color: rgba(255,255,255,0.15);
    color: var(--qc-white);
    background: rgba(255,255,255,0.03);
}
.qc-footer-main {
    position: relative;
    z-index: 2;
    padding: 0 0 3rem;
}
.qc-brand-col {
    max-width: 300px;
}
.qc-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
    text-decoration: none;
}
.qc-logo__icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--qc-mint), var(--qc-violet));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
    font-weight: 700;
    box-shadow: 0 4px 16px var(--qc-mint-glow);
}
.qc-logo__text {
    font-family: 'Fraunces', serif;
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--qc-white);
    letter-spacing: -0.03em;
}
.qc-brand-desc {
    font-size: 0.88rem;
    line-height: 1.65;
    color: var(--qc-text);
    margin-bottom: 1.25rem;
}
.qc-socials {
    display: flex;
    gap: 0.5rem;
}
.qc-social-link {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: var(--qc-card);
    border: 1px solid var(--qc-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--qc-text);
    text-decoration: none;
    transition: all 0.25s ease;
}
.qc-social-link:hover {
    background: var(--qc-mint-glow);
    border-color: rgba(52, 211, 153, 0.25);
    color: var(--qc-mint);
    transform: translateY(-2px);
}
.qc-social-link svg {
    width: 16px;
    height: 16px;
}
.qc-nav-title {
    font-family: 'DM Sans', sans-serif;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--qc-text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.1rem;
}
.qc-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.qc-nav-list li {
    margin-bottom: 0.6rem;
}
.qc-nav-list a {
    color: var(--qc-text);
    text-decoration: none;
    font-size: 0.88rem;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.qc-nav-list a:hover {
    color: var(--qc-white);
    transform: translateX(3px);
}
.qc-badge {
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    line-height: 1;
}
.qc-badge--new {
    background: var(--qc-mint-glow);
    color: var(--qc-mint);
}
.qc-badge--soon {
    background: var(--qc-violet-glow);
    color: var(--qc-violet);
}
.qc-stats {
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
    padding: 1.75rem 0;
    border-top: 1px solid var(--qc-border);
    border-bottom: 1px solid var(--qc-border);
    margin-bottom: 2rem;
}
.qc-stat__value {
    font-family: 'Fraunces', serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--qc-white);
    letter-spacing: -0.02em;
}
.qc-stat__value span {
    background: linear-gradient(135deg, var(--qc-mint), var(--qc-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.qc-stat__label {
    font-size: 0.78rem;
    color: var(--qc-text);
    margin-top: 0.1rem;
}
.qc-footer-bottom {
    position: relative;
    z-index: 2;
    padding: 1.5rem 0;
    border-top: 1px solid var(--qc-border);
}
.qc-footer-bottom__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}
.qc-copyright {
    font-size: 0.82rem;
    color: var(--qc-text);
}
.qc-legal-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.qc-legal-links a {
    font-size: 0.82rem;
    color: var(--qc-text);
    text-decoration: none;
    transition: color 0.2s;
}
.qc-legal-links a:hover {
    color: var(--qc-white);
}
.qc-status {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: var(--qc-mint);
}
.qc-status__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--qc-mint);
    box-shadow: 0 0 8px var(--qc-mint);
    animation: qcPulse 2s ease-in-out infinite;
}
@keyframes qcPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Footer responsive */
@media (max-width: 767px) {
    .qc-cta-card {
        padding: 2rem 1.5rem;
        text-align: center;
        flex-direction: column;
    }
    .qc-cta-card__text p {
        max-width: 100%;
    }
    .qc-cta-actions {
        justify-content: center;
    }
    .qc-brand-col { max-width: 100%; margin-bottom: 1.5rem; }
    .qc-stats { gap: 1.5rem; }
    .qc-footer-bottom__inner {
        flex-direction: column;
        text-align: center;
    }
}

/* Loading Spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Responsive */
@media (max-width: 768px) {
    .quiz-timer {
        position: static;
        margin-bottom: 1rem;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-card h3 {
        font-size: 2rem;
    }
}

/* Alerts */
.alert {
    border-left: 4px solid;
}

.alert-success {
    border-left-color: var(--success);
}

.alert-danger {
    border-left-color: var(--danger);
}

.alert-warning {
    border-left-color: var(--warning);
}

.alert-info {
    border-left-color: var(--info);
}

/* Pagination */
.pagination .page-link {
    color: var(--primary);
}

.pagination .page-item.active .page-link {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* Badge Variations */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
}

/* Hero Section */
.bg-primary {
    background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%) !important;
}

/* Card Borders */
.border-success {
    border-color: var(--success) !important;
    border-width: 2px !important;
}

.border-danger {
    border-color: var(--danger) !important;
    border-width: 2px !important;
}

/* Quiz Form */
#quizForm .card {
    margin-bottom: 1.5rem;
}

#quizForm .form-check {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s;
}

#quizForm .form-check:hover {
    background-color: #f8f9fa;
}

#quizForm .form-check-input {
    margin-top: 0.5rem;
}

/* Profile Avatar */
.avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #6c757d;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Dark Mode Overrides */
[data-bs-theme="dark"] .navbar {
    background: linear-gradient(135deg, #1a3a6b 0%, #0d2240 100%) !important;
}

[data-bs-theme="dark"] .question-card.correct {
    background-color: #0f3d2a;
}

[data-bs-theme="dark"] .question-card.incorrect {
    background-color: #3d1520;
}

[data-bs-theme="dark"] #quizForm .form-check:hover {
    background-color: #2c3034;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-track {
    background: #1a1d20;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #495057;
}

[data-bs-theme="dark"] .stat-card {
    opacity: 0.95;
}

[data-bs-theme="dark"] .bg-light {
    background-color: #212529 !important;
}

[data-bs-theme="dark"] .text-muted {
    color: #adb5bd !important;
}

/* Dark mode toggle button */
#darkModeToggle {
    cursor: pointer;
    font-size: 1.1rem;
}