/* ============================================
   MBA Lernfragen - Custom Theme
   ============================================ */

:root {
    --brand-primary: #1a5276;
    --brand-accent: #e67e22;
    --brand-surface: #f8f5f0;
    --brand-surface-raised: #ffffff;
    --brand-text: #2c3e50;
    --brand-text-muted: #6c7a89;
    --brand-success: #27ae60;
    --brand-danger: #c0392b;
    --brand-warning: #f39c12;
    --brand-info: #2980b9;
    --brand-radius: 12px;
    --brand-radius-sm: 8px;
    --brand-shadow: 0 2px 8px rgba(26, 82, 118, 0.08);
    --brand-shadow-hover: 0 8px 24px rgba(26, 82, 118, 0.14);
}

[data-bs-theme="dark"] {
    --brand-surface: #1a1d23;
    --brand-surface-raised: #23272f;
    --brand-text: #e0e0e0;
    --brand-text-muted: #8899a6;
    --brand-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --brand-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.4);
}

/* Typography */
body {
    color: var(--brand-text);
    background-color: var(--brand-surface);
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 9999;
    padding: 0.5rem 1rem;
    background: var(--brand-primary);
    color: #fff;
    border-radius: var(--brand-radius-sm);
}

.skip-link:focus {
    top: 0.5rem;
}

/* Navbar */
.app-navbar {
    background-color: var(--brand-surface-raised) !important;
    box-shadow: var(--brand-shadow);
}

.app-navbar .navbar-brand {
    color: var(--brand-primary);
    font-size: 1.2rem;
}

[data-bs-theme="dark"] .app-navbar .navbar-brand {
    color: var(--brand-accent);
}

/* Cards */
.card {
    border: none;
    border-radius: var(--brand-radius);
    box-shadow: var(--brand-shadow);
    background-color: var(--brand-surface-raised);
}

.card-header {
    border-radius: var(--brand-radius) var(--brand-radius) 0 0 !important;
}

/* Topic cards on dashboard */
.topic-card {
    transition: transform 0.15s ease-out, box-shadow 0.15s ease-out;
    border-left: 4px solid var(--brand-primary);
}

.topic-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--brand-shadow-hover) !important;
}

/* Progress bars */
.progress {
    border-radius: 999px;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.06);
}

[data-bs-theme="dark"] .progress {
    background-color: rgba(255, 255, 255, 0.08);
}

/* Buttons */
.btn {
    border-radius: var(--brand-radius-sm);
    font-weight: 500;
    transition: transform 0.1s ease-out, box-shadow 0.1s ease-out, background-color 0.15s ease;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
}

.btn-primary:hover {
    background-color: #154360;
    border-color: #154360;
}

/* Rating buttons */
.rating-btn {
    min-width: 120px;
    border-radius: var(--brand-radius-sm);
    font-weight: 600;
}

/* MC option buttons */
.mc-option {
    border-radius: var(--brand-radius-sm) !important;
    border: 2px solid var(--bs-border-color);
    transition: transform 0.1s ease-out, border-color 0.15s ease, background-color 0.15s ease;
}

.mc-option:hover:not(:disabled) {
    border-color: var(--brand-primary);
    transform: translateX(4px);
}

.mc-option.btn-success {
    border-color: var(--brand-success);
}

.mc-option.btn-danger {
    border-color: var(--brand-danger);
}

.mc-option.mc-selected {
    border-color: var(--brand-primary);
    background-color: rgba(26, 82, 118, 0.08);
}

[data-bs-theme="dark"] .mc-option.mc-selected {
    background-color: rgba(26, 82, 118, 0.25);
}

.mc-checkbox {
    font-size: 1.1em;
    vertical-align: middle;
}

/* Badges */
.badge {
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* Answer content styling */
.answer-content h1,
.answer-content h2,
.answer-content h3 {
    font-size: 1.1rem;
    font-weight: bold;
    margin-top: 0.8rem;
    margin-bottom: 0.4rem;
}

.answer-content ul,
.answer-content ol {
    padding-left: 1.5rem;
}

.answer-content table {
    width: 100%;
    margin: 0.5rem 0;
    border-radius: var(--brand-radius-sm);
    overflow: hidden;
}

.answer-content table th,
.answer-content table td {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--bs-border-color);
}

.answer-content table th {
    background-color: var(--bs-tertiary-bg);
    font-weight: 600;
}

/* Loading skeleton */
.skeleton {
    background: linear-gradient(90deg,
        var(--bs-tertiary-bg) 25%,
        var(--bs-secondary-bg) 50%,
        var(--bs-tertiary-bg) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    border-radius: var(--brand-radius-sm);
}

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

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
    width: 80%;
}

.skeleton-text:last-child {
    width: 60%;
}

/* Question fade-in */
.question-enter {
    animation: fadeSlideIn 0.25s ease-out;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Feedback flash on correct/wrong */
.feedback-flash {
    animation: feedbackPop 0.3s ease-out;
}

@keyframes feedbackPop {
    0% { transform: scale(0.95); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* Done celebration */
.done-icon {
    font-size: 4rem;
    animation: celebratePop 0.5s ease-out;
}

@keyframes celebratePop {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

/* Stats bars */
.stats-bars .d-flex > div {
    transition: width 0.3s ease-out;
}

/* Login/Register cards */
.auth-card {
    border-top: 4px solid var(--brand-primary);
}

/* Quiz textarea */
#user-answer {
    font-size: 1rem;
    border-radius: var(--brand-radius-sm);
    min-height: 120px;
}

#user-answer:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 0.2rem rgba(26, 82, 118, 0.15);
}

/* Pre wrap in quiz comparison */
#user-answer-display {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: inherit;
    font-size: 0.95rem;
}

/* Counter badge pulse when updating */
.counter-update {
    animation: counterPulse 0.3s ease-out;
}

@keyframes counterPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

/* Dashboard stat cards */
.stat-card {
    border-radius: var(--brand-radius);
    border: none;
    background: var(--brand-surface-raised);
    box-shadow: var(--brand-shadow);
    text-align: center;
}

.stat-card .h4 {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* Footer */
footer {
    background-color: var(--brand-surface-raised);
}

/* Responsive */
@media (max-width: 576px) {
    .rating-btn {
        min-width: 80px;
        font-size: 0.85rem;
        padding: 0.5rem 0.75rem;
    }

    h1, .h1 { font-size: 1.5rem; }
    h2, .h2 { font-size: 1.3rem; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .question-enter,
    .feedback-flash,
    .done-icon,
    .counter-update,
    .skeleton {
        animation: none;
    }

    .topic-card,
    .mc-option,
    .btn {
        transition: none;
    }
}