/* ============================================================
   TFA Lernapp - Page-Specific Styles
   ============================================================ */

/* ---- Auth Pages ---- */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.auth-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--space-lg);
    background: linear-gradient(135deg, var(--primary-500), var(--success-500));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3);
}

.auth-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-xs);
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-2xl);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    text-align: left;
}

.auth-form .btn {
    margin-top: var(--space-sm);
    width: 100%;
}

.auth-switch {
    margin-top: var(--space-lg);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.auth-switch a {
    font-weight: 600;
}

/* ---- Dashboard ---- */
.dashboard-hero {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.progress-ring-container {
    position: relative;
    width: 160px;
    height: 160px;
    min-width: 160px;
    flex-shrink: 0;
}

.progress-ring {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.progress-ring-bg {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 10;
}

.progress-ring-fill {
    fill: none;
    stroke: url(#progressGradient);
    stroke-width: 10;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease-out;
}

.progress-ring-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.progress-ring-value {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.progress-ring-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

.hero-info {
    flex: 1;
}

.hero-greeting {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.hero-summary {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: var(--leading-relaxed);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.quick-stats {
    margin-bottom: var(--space-2xl);
}

.subject-progress-card {
    padding: var(--space-lg);
}

.subject-progress-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.subject-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.subject-progress-info {
    flex: 1;
}

.subject-name {
    font-weight: 600;
    font-size: var(--text-base);
}

.subject-stats {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

.recent-sessions {
    margin-top: var(--space-md);
}

.session-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-fast);
}

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

.session-item:hover {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.session-score {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: var(--text-sm);
}

.session-info {
    flex: 1;
}

.session-title {
    font-weight: 600;
    font-size: var(--text-sm);
}

.session-meta {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ---- Quiz Setup ---- */
.quiz-setup {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

.setup-step {
    margin-bottom: var(--space-2xl);
}

.setup-step-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.step-number {
    width: 32px;
    height: 32px;
    background: var(--primary-600);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-sm);
}

.topic-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.topic-checkbox:hover {
    border-color: var(--primary-500);
}

.topic-checkbox.checked {
    border-color: var(--primary-500);
    background: rgba(99, 102, 241, 0.08);
}

.topic-checkbox input[type="checkbox"] {
    display: none;
}

.custom-checkbox {
    width: 22px;
    height: 22px;
    min-width: 22px;
    border: 2px solid var(--neutral-500);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    color: transparent;
    font-size: 14px;
}

.topic-checkbox.checked .custom-checkbox {
    background: var(--primary-500);
    border-color: var(--primary-500);
    color: white;
}

.topic-info {
    flex: 1;
}

.topic-name {
    font-weight: 600;
    font-size: var(--text-sm);
}

.topic-count {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

.count-selector {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.count-btn {
    width: 40px;
    height: 40px;
}

.count-display {
    font-size: var(--text-2xl);
    font-weight: 700;
    min-width: 60px;
    text-align: center;
}

.count-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    outline: none;
}

.count-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    background: var(--primary-500);
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

/* ---- Quiz Running ---- */
.quiz-view {
    max-width: var(--container-narrow);
    margin: 0 auto;
}

.quiz-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg-primary);
    padding: var(--space-md) 0;
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.quiz-progress-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.quiz-progress-text {
    font-size: var(--text-sm);
    font-weight: 600;
    white-space: nowrap;
    color: var(--text-secondary);
}

.quiz-actions-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.quiz-question-card {
    animation: fadeInUp 0.4s ease-out;
}

.question-type-badge {
    margin-bottom: var(--space-md);
}

.question-text {
    font-size: var(--text-xl);
    font-weight: 600;
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
}

.question-hint {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    font-style: italic;
    margin-top: calc(-1 * var(--space-md));
    margin-bottom: var(--space-lg);
    padding: var(--space-sm) var(--space-md);
    border-left: 3px solid var(--primary-500);
    background: rgba(99, 102, 241, 0.05);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.question-image {
    margin-bottom: var(--space-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    position: relative;
}

.question-image img {
    width: 100%;
    height: auto;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.quiz-nav {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2xl);
    gap: var(--space-md);
}

.flag-btn {
    color: var(--warning-400);
}

.flag-btn.flagged {
    color: var(--warning-500);
    background: rgba(245, 158, 11, 0.1);
}

/* ---- Quiz Results ---- */
.results-hero {
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.results-score {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.results-score.good {
    background: linear-gradient(135deg, var(--success-400), var(--success-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-score.medium {
    background: linear-gradient(135deg, var(--warning-400), var(--warning-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-score.poor {
    background: linear-gradient(135deg, var(--error-400), var(--error-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-text {
    font-size: var(--text-lg);
    color: var(--text-secondary);
}

.results-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-top: var(--space-xl);
}

.result-question-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
    border: 1px solid var(--border-color);
    margin-bottom: var(--space-sm);
}

.result-question-item:hover {
    background: var(--bg-tertiary);
}

.result-icon {
    width: 28px;
    height: 28px;
    min-width: 28px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 700;
    margin-top: 2px;
}

.result-icon.correct {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-400);
}

.result-icon.incorrect {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error-400);
}

.result-icon.pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning-400);
}

.result-question-text {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--text-primary);
    line-height: var(--leading-relaxed);
}

.result-actions {
    display: flex;
    gap: var(--space-xs);
}

/* ---- Self Assessment ---- */
.self-assess-card {
    border: 2px solid var(--warning-500);
    background: rgba(245, 158, 11, 0.05);
}

.self-assess-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--warning-400);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.expected-answer {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    border-left: 3px solid var(--success-500);
}

.expected-answer-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--success-400);
    margin-bottom: var(--space-sm);
}

.expected-answer-text {
    font-size: var(--text-sm);
    color: var(--text-primary);
    line-height: var(--leading-relaxed);
}

.keyword-highlight {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-300);
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 600;
}

.self-assess-buttons {
    display: flex;
    gap: var(--space-md);
}

.self-assess-buttons .btn {
    flex: 1;
    padding: var(--space-md);
    font-size: var(--text-base);
}

/* ---- Catalog ---- */
.catalog-filters {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.filter-label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.filter-select {
    padding: 0.4rem 0.75rem;
    font-size: var(--text-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    outline: none;
    cursor: pointer;
}

.filter-select:focus {
    border-color: var(--primary-500);
}

.question-list-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
    background: var(--bg-card);
}

.question-list-item:hover {
    border-color: var(--border-color-hover);
    background: var(--bg-card-hover);
}

.question-number {
    width: 32px;
    height: 32px;
    min-width: 32px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--text-secondary);
}

.question-preview {
    flex: 1;
    min-width: 0;
}

.question-preview-text {
    font-size: var(--text-sm);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.question-meta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ---- Stats Page ---- */
.stats-overview {
    margin-bottom: var(--space-2xl);
}

.chart-container {
    padding: var(--space-lg);
    min-height: 250px;
}

.bar-chart {
    display: flex;
    align-items: flex-end;
    gap: var(--space-sm);
    height: 200px;
    padding-top: var(--space-md);
}

.bar-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    height: 100%;
    justify-content: flex-end;
}

.bar {
    width: 100%;
    max-width: 40px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    background: linear-gradient(to top, var(--primary-600), var(--primary-400));
    transition: height 0.8s ease-out;
    min-height: 4px;
}

.bar-label {
    font-size: 10px;
    color: var(--text-tertiary);
    text-align: center;
    writing-mode: vertical-lr;
    transform: rotate(180deg);
    max-height: 80px;
    overflow: hidden;
}

.bar-value {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--text-secondary);
}

/* ---- PDF Viewer ---- */
.pdf-viewer-modal {
    max-width: 95vw;
    max-height: 95vh;
    width: 900px;
    height: 85vh;
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
}

.pdf-viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    min-height: 56px;
}

.pdf-viewer-title {
    font-size: var(--text-sm);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdf-viewer-controls {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.pdf-viewer-body {
    flex: 1;
    overflow: auto;
    background: var(--neutral-800);
}

.pdf-viewer-body canvas {
    display: block;
    margin: var(--space-md) auto;
    box-shadow: var(--shadow-lg);
}

/* ---- Label Question (Beschriftung) ---- */
.label-image-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--space-lg);
}

.label-marker {
    position: absolute;
    width: 28px;
    height: 28px;
    background: var(--primary-500);
    border: 2px solid white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 700;
    color: white;
    transform: translate(-50%, -50%);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    z-index: 2;
}

.label-inputs {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.label-input-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.label-number {
    width: 28px;
    height: 28px;
    min-width: 28px;
    background: var(--primary-500);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 700;
    color: white;
}

.label-input-row .input {
    flex: 1;
}

/* ============================================================
   Mobile Responsive Overrides (Pages)
   ============================================================ */
@media (max-width: 768px) {
    /* Auth */
    .auth-page {
        padding: var(--space-md);
    }
    .auth-card {
        padding: var(--space-lg);
    }

    /* Dashboard Hero */
    .dashboard-hero {
        flex-direction: column;
        text-align: center;
        gap: var(--space-lg);
    }
    .progress-ring-container {
        width: 120px;
        height: 120px;
        min-width: 120px;
        margin: 0 auto;
    }
    .progress-ring-value {
        font-size: var(--text-2xl);
    }
    .hero-greeting {
        font-size: var(--text-xl);
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-summary {
        font-size: var(--text-sm);
    }

    /* Quick Stats */
    .quick-stats.grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .quick-stats.grid-5 {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat-value {
        font-size: var(--text-2xl);
    }

    /* Session Items */
    .session-item {
        padding: var(--space-sm) var(--space-md);
    }
    .session-score {
        width: 40px;
        height: 40px;
        font-size: var(--text-xs);
    }

    /* Quiz Setup */
    .count-selector {
        flex-wrap: wrap;
        justify-content: center;
    }
    .count-display {
        order: -1;
        width: 100%;
        font-size: var(--text-3xl);
        margin-bottom: var(--space-sm);
    }

    /* Quiz Running */
    .quiz-header {
        padding: var(--space-sm) 0;
        top: 0;
    }
    .quiz-progress-bar {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }
    .quiz-progress-text {
        font-size: var(--text-xs);
    }
    .quiz-actions-bar {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }
    .question-text {
        font-size: var(--text-lg);
    }
    .quiz-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-sm);
        overflow: visible;
    }
    .quiz-nav .btn {
        flex: 1 1 auto;
        min-width: 80px;
        font-size: var(--text-sm);
        padding: var(--space-sm) var(--space-md);
        white-space: nowrap;
        overflow: visible;
    }
    .quiz-nav .btn-success,
    .quiz-nav .btn-primary {
        flex: 1 1 100%;
        min-width: unset;
    }
    .quiz-nav .btn-lg {
        font-size: var(--text-base);
    }

    /* Question dots: show as scrollable row */
    .quiz-actions-bar .flex.gap-sm.items-center {
        max-width: 200px !important;
    }

    /* Self Assessment */
    .self-assess-buttons {
        flex-direction: column;
    }

    /* Results */
    .results-score {
        font-size: 3rem;
    }
    .results-stats {
        gap: var(--space-lg);
    }
    .result-question-item {
        flex-wrap: wrap;
    }
    .result-actions {
        width: 100%;
        margin-top: var(--space-sm);
        justify-content: flex-end;
    }

    /* Catalog */
    .catalog-filters {
        flex-direction: column;
    }
    .filter-group {
        width: 100%;
    }
    .filter-select {
        width: 100%;
    }
    .question-list-item {
        padding: var(--space-md);
    }

    /* Stats */
    .chart-container {
        padding: var(--space-md);
        min-height: 200px;
    }
    .bar-chart {
        height: 160px;
    }
    .bar-label {
        font-size: 8px;
    }

    /* PDF Viewer */
    .pdf-viewer-modal {
        max-width: 100vw;
        max-height: 100vh;
        width: 100vw;
        height: 100vh;
        border-radius: 0;
    }
    .pdf-viewer-header {
        padding: var(--space-sm) var(--space-md);
        flex-wrap: wrap;
        gap: var(--space-sm);
    }
    .pdf-viewer-controls {
        flex-wrap: wrap;
        gap: 4px;
    }
    .pdf-viewer-title {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .quick-stats.grid-4 {
        grid-template-columns: 1fr 1fr;
    }
    .stat-value {
        font-size: var(--text-xl);
    }
    .option-item {
        padding: var(--space-sm) var(--space-md);
    }
    .option-text {
        font-size: var(--text-sm);
    }
    .hero-actions {
        flex-direction: column;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .quiz-nav .btn {
        font-size: var(--text-sm);
        padding: var(--space-sm) var(--space-md);
    }
}