/* E-Learning Module Styles — experiment-specific overrides.

   Container, .module-nav, .module-nav-btn, .module-title, .module-subtitle,
   .elearn-card, .stat-phase, .exercise-box (base) and .elearn-btn-success
   all live in app/static/css/base/blueprint_elearning.css. This file only
   keeps rules that are specific to "Einführung Physiklabor" (Quiz, data
   tables, classify-drag, step indicators, progress bar, module-status cells)
   or that extend Blueprint C with decorative details (exercise-box icon,
   formula-example tint). */

/* Overline for mean values */
.overline {
    text-decoration: overline;
    text-underline-offset: -0.15em;
    padding: 0 0.1em;
    display: inline-block;
    margin-top: 0.3em;
    color: inherit;
}

/* Module sections */
.elearning-module {
    display: none;
    animation: fadeIn 0.3s ease;
}

.elearning-module.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.script-ref {
    font-size: 0.8rem;
    color: var(--textcolor-50contrast);
    margin-bottom: 1.5rem;
}

.script-ref a {
    color: var(--primary-color);
    text-decoration: none;
}

.script-ref a:hover {
    text-decoration: underline;
}

.formula-example {
    color: var(--textcolor-80contrast);
    font-size: var(--text-sm);
    line-height: 1.7;
    /* Purple accent — dokumentierte Token-Ausnahme (STYLE_GUIDE §4.6). */
    background: rgba(139, 92, 246, 0.06);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-top: var(--spacing-xs);
}

/* Exercise-box icon (pencil) — extends Blueprint C's .exercise-box base */
.exercise-box h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.exercise-box h4::before {
    content: '\270F';
    font-size: var(--text-lg);
}

/* Quiz buttons */
.quiz-option {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    border: 2px solid var(--surface-border-light);
    border-radius: 8px;
    background: var(--neutrals-0);
    text-align: left;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quiz-option:hover {
    border-color: var(--primary-color);
    background: var(--primary-tint);
}

.quiz-option.correct {
    border-color: var(--signals-successcolor);
    background: var(--success-50);
    color: var(--success-900);
}

.quiz-option.wrong {
    border-color: var(--error-500);
    background: var(--error-50);
    color: var(--error-800);
}

.quiz-option.disabled {
    pointer-events: none;
    opacity: 0.7;
}

/* Data entry tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.data-table th {
    background: var(--primary-color);
    color: var(--neutrals-0);
    padding: 1rem 0.6rem 0.6rem;
    text-align: center;
    font-weight: 600;
    line-height: 1.8;
}

.data-table th .overline,
.data-table th .katex,
.data-table th .katex * {
    color: var(--neutrals-0);
}

.data-table td {
    padding: 0.5rem;
    text-align: center;
    border: 1px solid var(--surface-border-light);
}

.data-table input {
    width: 80px;
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    text-align: center;
    font-size: 0.85rem;
}

.data-table input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.15);
}

.data-table .result-cell {
    font-weight: 700;
    color: var(--primary-color);
    background: var(--primary-tint);
}

/* Exercise input rows — aligned Prüfen buttons */
.exercise-input-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.exercise-input-row .elearn-btn {
    margin-left: auto;
    flex-shrink: 0;
}

/* Buttons */
.elearn-btn {
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.elearn-btn-primary {
    background: var(--primary-color);
    color: var(--neutrals-0);
}

.elearn-btn-primary:hover {
    background: var(--primary-dark);
}

.elearn-btn-outline {
    background: var(--neutrals-0);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.elearn-btn-outline:hover {
    background: var(--primary-tint);
}

/* Classification drag exercise */
.classify-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.classify-item {
    padding: 0.5rem 1rem;
    background: var(--neutrals-0);
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    cursor: grab;
    font-size: 0.85rem;
    transition: all 0.2s ease;
    user-select: none;
}

.classify-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.classify-item.dragging {
    opacity: 0.4;
}

.classify-item.placed {
    opacity: 0.4;
    pointer-events: none;
}

.classify-zone {
    min-height: 80px;
    border: 2px dashed var(--gray-300);
    border-radius: 10px;
    padding: 0.75rem;
    margin-bottom: 0.75rem;
    transition: all 0.2s ease;
}

.classify-zone.dragover {
    border-color: var(--primary-color);
    background: var(--primary-tint);
}

.classify-zone h5 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.classify-zone .placed-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.classify-zone .placed-tag {
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 2px solid var(--textcolor-fullcontrast);
}

.classify-zone .placed-tag.correct {
    background: var(--success-100);
    color: var(--success-900);
}

.classify-zone .placed-tag.wrong {
    background: var(--error-100);
    color: var(--error-800);
}

/* Interactive chart area */
.chart-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 1rem auto;
}

/* Step indicator */
.step-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.step-dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid var(--gray-300);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--gray-500);
    transition: all 0.2s ease;
}

.step-dot.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: var(--neutrals-0);
}

.step-dot.done {
    border-color: var(--signals-successcolor);
    background: var(--signals-successcolor);
    color: var(--neutrals-0);
}

.step-line {
    flex: 1;
    height: 2px;
    background: var(--surface-border-light);
}

.step-line.done {
    background: var(--signals-successcolor);
}

/* Protocol checklist */
.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--surface-hover);
}

.checklist-item:last-child {
    border-bottom: none;
}

.checklist-checkbox {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
    accent-color: var(--primary-color);
}

.checklist-label {
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Progress bar */
.progress-bar-container {
    background: var(--surface-border-light);
    border-radius: 10px;
    height: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--signals-successcolor) 100%);
    border-radius: 10px;
    transition: width 0.5s ease;
}

/* Module status cells (Module 7) */
.module-status-cell {
    font-size: 0.85rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

/* Responsive */
@media (max-width: 768px) {
    .elearning-container {
        padding: 1rem;
    }

    .module-nav {
        flex-direction: column;
    }

    .module-nav-btn {
        text-align: center;
    }

    .data-table input {
        width: 60px;
    }

}