"""Companion Dashboard - CSS Styles."""

def get_companion_css() -> str:
    """CSS für das Companion Dashboard."""
    return """
    /* Companion Dashboard Styles */
    .companion-container {
        max-width: 900px;
        margin: 0 auto;
        padding: 20px;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }

    /* Kontext-Info Zeile (minimalistisch) */
    .context-info {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 8px 16px;
        margin-bottom: 16px;
        font-size: 13px;
        color: #6b7280;
        background: #f9fafb;
        border-radius: 8px;
    }

    .context-info span {
        display: flex;
        align-items: center;
        gap: 4px;
    }

    .context-info .material-icons {
        font-size: 14px;
    }

    .context-info .separator {
        color: #d1d5db;
    }

    /* Onboarding Modal */
    .onboarding-modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.6);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 3000;
    }
    .onboarding-modal-overlay.active {
        display: flex;
    }
    .onboarding-modal {
        background: white;
        border-radius: 16px;
        width: 90%;
        max-width: 420px;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
        overflow: hidden;
    }
    .onboarding-header {
        background: linear-gradient(135deg, #6C1B1B, #8B2525);
        color: white;
        padding: 24px;
        text-align: center;
    }
    .onboarding-header h2 {
        margin: 0 0 8px 0;
        font-size: 22px;
    }
    .onboarding-header p {
        margin: 0;
        opacity: 0.9;
        font-size: 14px;
    }
    .onboarding-body {
        padding: 24px;
    }
    .onboarding-step {
        display: none;
    }
    .onboarding-step.active {
        display: block;
    }
    .onboarding-label {
        font-size: 14px;
        font-weight: 500;
        color: #374151;
        margin-bottom: 8px;
    }
    .onboarding-select {
        width: 100%;
        padding: 12px;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        font-size: 15px;
        background: white;
        margin-bottom: 16px;
    }
    .onboarding-select:focus {
        outline: none;
        border-color: #6C1B1B;
    }
    .onboarding-progress {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-bottom: 20px;
    }
    .onboarding-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: #e5e7eb;
    }
    .onboarding-dot.active {
        background: #6C1B1B;
    }
    .onboarding-dot.done {
        background: #10b981;
    }
    .onboarding-buttons {
        display: flex;
        gap: 12px;
        margin-top: 16px;
    }
    .onboarding-btn {
        flex: 1;
        padding: 12px 16px;
        border-radius: 8px;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
    }
    .onboarding-btn-secondary {
        background: #f3f4f6;
        color: #374151;
    }
    .onboarding-btn-primary {
        background: linear-gradient(135deg, #6C1B1B, #8B2525);
        color: white;
    }
    .onboarding-btn:hover {
        opacity: 0.9;
    }

    .companion-header {
        text-align: center;
        margin-bottom: 30px;
    }

    .companion-header h1 {
        font-size: 28px;
        color: inherit;
        margin-bottom: 8px;
    }

    .companion-header .phase-badge {
        display: inline-block;
        background: linear-gradient(135deg, #6C1B1B, #8B2525);
        color: white;
        padding: 6px 16px;
        border-radius: 20px;
        font-size: 14px;
        font-weight: 500;
    }

    /* Phase Indicator */
    .phase-indicator {
        background: #f8f9fa;
        border-radius: 12px;
        padding: 20px;
        margin-bottom: 24px;
    }

    .phase-timeline {
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: relative;
        padding: 0 10px;
    }

    .phase-timeline::before {
        content: '';
        position: absolute;
        top: 15px;
        left: 30px;
        right: 30px;
        height: 3px;
        background: #e0e0e0;
        z-index: 0;
    }

    .phase-step {
        display: flex;
        flex-direction: column;
        align-items: center;
        z-index: 1;
        cursor: pointer;
    }

    .phase-dot {
        width: 30px;
        height: 30px;
        border-radius: 50%;
        background: #e0e0e0;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 8px;
        transition: all 0.3s ease;
    }

    .phase-dot.completed {
        background: #22c55e;
    }

    .phase-dot.current {
        background: #6C1B1B;
        box-shadow: 0 0 0 4px rgba(108, 27, 27, 0.2);
    }

    .phase-dot .material-icons {
        font-size: 16px;
        color: white;
    }

    .phase-label {
        font-size: 11px;
        color: #666;
        text-align: center;
        max-width: 70px;
    }

    .phase-label.current {
        color: #6C1B1B;
        font-weight: 600;
    }

    /* Suggestions List */
    .suggestions-section {
        margin-bottom: 24px;
    }

    .section-title {
        font-size: 18px;
        font-weight: 600;
        color: #1a1a2e;
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .suggestion-card {
        display: flex;
        align-items: center;
        background: white;
        border: 1px solid #e5e7eb;
        border-radius: 12px;
        padding: 16px;
        margin-bottom: 12px;
        transition: all 0.2s ease;
        cursor: pointer;
    }

    .suggestion-card:hover {
        border-color: #6C1B1B;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        transform: translateY(-1px);
    }

    .priority-bar {
        width: 4px;
        height: 50px;
        border-radius: 2px;
        margin-right: 16px;
        flex-shrink: 0;
    }

    .priority-bar.urgent { background: #ef4444; }
    .priority-bar.high { background: #f97316; }
    .priority-bar.medium { background: #3b82f6; }
    .priority-bar.low { background: #9ca3af; }

    .suggestion-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: #f3f4f6;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-right: 16px;
        flex-shrink: 0;
    }

    .suggestion-icon .material-icons {
        color: #6C1B1B;
    }

    .suggestion-content {
        flex: 1;
    }

    .suggestion-title {
        font-weight: 600;
        color: #1a1a2e;
        margin-bottom: 4px;
    }

    .suggestion-description {
        font-size: 13px;
        color: #6b7280;
    }

    .suggestion-action {
        color: #6C1B1B;
        font-weight: 600;
        font-size: 14px;
        display: flex;
        align-items: center;
        gap: 4px;
    }

    .suggestion-time {
        font-size: 12px;
        color: #9ca3af;
        margin-top: 4px;
    }

    /* Empty State */
    .empty-state {
        text-align: center;
        padding: 40px 20px;
        background: #f0fdf4;
        border-radius: 12px;
    }

    .empty-state .material-icons {
        font-size: 48px;
        color: #22c55e;
        margin-bottom: 12px;
    }

    .empty-state h3 {
        color: #166534;
        margin-bottom: 8px;
    }

    .empty-state p {
        color: #6b7280;
    }

    /* Stats Cards */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 12px;
        margin-bottom: 24px;
    }

    .stat-card {
        background: white;
        border: 1px solid #e5e7eb;
        border-radius: 10px;
        padding: 16px;
        text-align: center;
    }

    .stat-value {
        font-size: 28px;
        font-weight: 700;
        color: #6C1B1B;
    }

    .stat-label {
        font-size: 12px;
        color: #6b7280;
        margin-top: 4px;
    }

    /* Progress Card */
    .progress-card {
        background: #eff6ff;
        border-radius: 12px;
        padding: 20px;
        margin-bottom: 24px;
    }

    .progress-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 12px;
    }

    .progress-title {
        font-weight: 600;
        color: #1e40af;
    }

    .progress-percentage {
        font-weight: 700;
        color: #1e40af;
    }

    .progress-bar-container {
        background: #dbeafe;
        border-radius: 10px;
        height: 10px;
        overflow: hidden;
    }

    .progress-bar-fill {
        background: linear-gradient(90deg, #3b82f6, #1d4ed8);
        height: 100%;
        border-radius: 10px;
        transition: width 0.5s ease;
    }

    .progress-milestones {
        margin-top: 12px;
        font-size: 13px;
        color: #4b5563;
    }

    /* Events Card */
    .events-card {
        background: #fefce8;
        border-radius: 12px;
        padding: 20px;
    }

    .event-item {
        display: flex;
        align-items: center;
        padding: 12px 0;
        border-bottom: 1px solid #fef08a;
    }

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

    .event-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: white;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-right: 12px;
    }

    .event-icon .material-icons {
        color: #ca8a04;
        font-size: 20px;
    }

    .event-info {
        flex: 1;
    }

    .event-title {
        font-weight: 500;
        color: #1a1a2e;
    }

    .event-date {
        font-size: 12px;
        color: #6b7280;
    }

    .event-badge {
        font-size: 12px;
        font-weight: 600;
        color: #ca8a04;
        background: white;
        padding: 4px 10px;
        border-radius: 12px;
    }

    /* Mode Toggle */
    .mode-toggle {
        display: flex;
        background: #f3f4f6;
        border-radius: 8px;
        padding: 4px;
        margin-bottom: 20px;
    }

    .mode-btn {
        flex: 1;
        padding: 10px 16px;
        border: none;
        background: transparent;
        border-radius: 6px;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .mode-btn.active {
        background: #6C1B1B;
        color: white;
    }

    .mode-btn:not(.active):hover {
        background: #e5e7eb;
    }

    /* Responsive */
    @media (max-width: 600px) {
        .phase-timeline {
            overflow-x: auto;
            padding-bottom: 10px;
        }

        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .suggestion-card {
            flex-wrap: wrap;
        }
    }

    /* ============================================ */
    /* LESSON MODE - Unterrichtsstunden-Steuerung  */
    /* ============================================ */

    .lesson-container {
        display: none;
    }

    .lesson-container.active {
        display: block;
    }

    /* ==================== VISUAL PIE TIMER (Feature f21) ==================== */
    .visual-timer-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin: 10px 0;
    }

    .visual-timer-svg {
        width: 140px;
        height: 140px;
        transform: rotate(-90deg);
    }

    .visual-timer-bg {
        fill: none;
        stroke: rgba(255, 255, 255, 0.2);
        stroke-width: 10;
    }

    .visual-timer-progress {
        fill: none;
        stroke-width: 10;
        stroke-linecap: round;
        transition: stroke-dashoffset 0.5s ease, stroke 0.5s ease;
    }

    /* Timer Farben basierend auf verbleibender Zeit */
    .visual-timer-progress.time-plenty {
        stroke: #22c55e; /* Gruen - viel Zeit */
    }

    .visual-timer-progress.time-warning {
        stroke: #f59e0b; /* Gelb/Orange - 5 Min oder weniger */
    }

    .visual-timer-progress.time-critical {
        stroke: #ef4444; /* Rot - 2 Min oder weniger */
    }

    .visual-timer-progress.time-overtime {
        stroke: #dc2626;
        animation: pulse-overtime 1s infinite;
    }

    @keyframes pulse-overtime {
        0%, 100% { stroke-opacity: 1; }
        50% { stroke-opacity: 0.5; }
    }

    .visual-timer-center {
        position: absolute;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .visual-timer-time {
        font-size: 28px;
        font-weight: 700;
        font-family: 'Courier New', monospace;
        color: white;
    }

    .visual-timer-phase {
        font-size: 12px;
        opacity: 0.9;
        margin-top: 2px;
    }

    .visual-timer-wrapper {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 140px;
        height: 140px;
    }

    /* ==================== PHASEN-FARBSCHEMA (Feature f25) ==================== */
    /* Forschungsbasierte Farben fuer jede Unterrichtsphase */

    /* Einstieg: Warmes Blau - ruhig, einladend */
    .lesson-header.phase-einstieg {
        background: linear-gradient(135deg, #4A90E2, #5BA3F5);
    }
    .lesson-phase-dot.phase-einstieg { background: #4A90E2; }
    .lesson-timeline-connector.phase-einstieg { background: #4A90E2; }

    /* Erarbeitung: Orange - energetisch, aktiv */
    .lesson-header.phase-erarbeitung {
        background: linear-gradient(135deg, #F5A623, #F7B84C);
    }
    .lesson-phase-dot.phase-erarbeitung { background: #F5A623; }
    .lesson-timeline-connector.phase-erarbeitung { background: #F5A623; }

    /* Sicherung: Gruen - stabil, bestaetigt */
    .lesson-header.phase-sicherung {
        background: linear-gradient(135deg, #7ED321, #8FE040);
    }
    .lesson-phase-dot.phase-sicherung { background: #7ED321; }
    .lesson-timeline-connector.phase-sicherung { background: #7ED321; }

    /* Transfer: Lila - kreativ, neue Kontexte */
    .lesson-header.phase-transfer {
        background: linear-gradient(135deg, #9013FE, #A33FFF);
    }
    .lesson-phase-dot.phase-transfer { background: #9013FE; }
    .lesson-timeline-connector.phase-transfer { background: #9013FE; }

    /* Reflexion: Sanftes Grau - ruhig, introspektiv */
    .lesson-header.phase-reflexion {
        background: linear-gradient(135deg, #6B7280, #8B949E);
    }
    .lesson-phase-dot.phase-reflexion { background: #6B7280; }
    .lesson-timeline-connector.phase-reflexion { background: #6B7280; }

    /* Fallback/Default */
    .lesson-header.phase-not_started,
    .lesson-header.phase-ended {
        background: linear-gradient(135deg, #6C1B1B, #8B2525);
    }

    /* Lesson Header mit Timer */
    .lesson-header {
        background: linear-gradient(135deg, #6C1B1B, #8B2525);
        color: white;
        border-radius: 16px;
        padding: 24px;
        margin-bottom: 20px;
        text-align: center;
        transition: background 0.5s ease;
    }

    .lesson-header h2 {
        margin: 0 0 8px 0;
        font-size: 20px;
        opacity: 0.9;
    }

    .lesson-timer-display {
        font-size: 64px;
        font-weight: 700;
        font-family: 'Courier New', monospace;
        letter-spacing: 4px;
    }

    .lesson-timer-display.warning {
        animation: pulse-warning 1s infinite;
    }

    .lesson-timer-display.overtime {
        color: #fca5a5;
    }

    @keyframes pulse-warning {
        0%, 100% { opacity: 1; }
        50% { opacity: 0.6; }
    }

    .lesson-phase-label {
        font-size: 18px;
        margin-top: 12px;
        font-weight: 600;
    }

    .lesson-overtime-badge {
        display: inline-block;
        background: #fca5a5;
        color: #7f1d1d;
        padding: 4px 12px;
        border-radius: 12px;
        font-size: 12px;
        margin-top: 8px;
    }

    /* ==================== WebSocket Connection Status (Phase 6) ==================== */
    .ws-connection-status {
        position: absolute;
        top: 8px;
        right: 8px;
        display: flex;
        align-items: center;
        background: rgba(255, 255, 255, 0.9);
        padding: 4px 8px;
        border-radius: 12px;
        font-size: 11px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    }

    .ws-connection-status .material-icons {
        font-size: 14px;
        margin-right: 4px;
    }

    .ws-connection-status.connected { color: #22c55e; }
    .ws-connection-status.reconnecting { color: #f59e0b; }
    .ws-connection-status.polling { color: #6b7280; }
    .ws-connection-status.error { color: #ef4444; }

    /* ==================== Teacher Feedback (Phase 7) ==================== */
    .feedback-fab {
        position: fixed;
        bottom: 24px;
        right: 24px;
        width: 56px;
        height: 56px;
        border-radius: 28px;
        background: linear-gradient(135deg, #6C1B1B, #8B2525);
        color: white;
        border: none;
        box-shadow: 0 4px 12px rgba(108, 27, 27, 0.4);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 1000;
        transition: transform 0.2s, box-shadow 0.2s;
    }
    .feedback-fab:hover {
        transform: scale(1.05);
        box-shadow: 0 6px 16px rgba(108, 27, 27, 0.5);
    }
    .feedback-fab .material-icons {
        font-size: 24px;
    }

    .feedback-modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 2000;
    }
    .feedback-modal-overlay.active {
        display: flex;
    }

    .feedback-modal {
        background: white;
        border-radius: 16px;
        width: 90%;
        max-width: 500px;
        max-height: 90vh;
        overflow-y: auto;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    }

    .feedback-modal-header {
        padding: 20px 24px;
        border-bottom: 1px solid #e5e7eb;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .feedback-modal-header h3 {
        margin: 0;
        font-size: 18px;
        color: #1f2937;
    }
    .feedback-modal-close {
        background: none;
        border: none;
        cursor: pointer;
        color: #6b7280;
        padding: 4px;
    }
    .feedback-modal-close:hover {
        color: #1f2937;
    }

    .feedback-modal-body {
        padding: 24px;
    }

    .feedback-form-group {
        margin-bottom: 16px;
    }
    .feedback-form-group label {
        display: block;
        font-size: 14px;
        font-weight: 500;
        color: #374151;
        margin-bottom: 6px;
    }
    .feedback-form-group input,
    .feedback-form-group textarea,
    .feedback-form-group select {
        width: 100%;
        padding: 10px 12px;
        border: 1px solid #d1d5db;
        border-radius: 8px;
        font-size: 14px;
        box-sizing: border-box;
    }
    .feedback-form-group input:focus,
    .feedback-form-group textarea:focus,
    .feedback-form-group select:focus {
        outline: none;
        border-color: #6C1B1B;
        box-shadow: 0 0 0 3px rgba(108, 27, 27, 0.1);
    }
    .feedback-form-group textarea {
        resize: vertical;
        min-height: 100px;
    }

    .feedback-type-selector {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
    }
    .feedback-type-btn {
        padding: 8px 16px;
        border: 1px solid #d1d5db;
        border-radius: 20px;
        background: white;
        font-size: 13px;
        cursor: pointer;
        transition: all 0.2s;
    }
    .feedback-type-btn:hover {
        border-color: #6C1B1B;
    }
    .feedback-type-btn.active {
        background: #6C1B1B;
        color: white;
        border-color: #6C1B1B;
    }

    .feedback-submit-btn {
        width: 100%;
        padding: 14px 24px;
        background: linear-gradient(135deg, #6C1B1B, #8B2525);
        color: white;
        border: none;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 500;
        cursor: pointer;
        margin-top: 8px;
        transition: opacity 0.2s;
    }
    .feedback-submit-btn:hover {
        opacity: 0.9;
    }
    .feedback-submit-btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

    .feedback-success {
        text-align: center;
        padding: 40px 24px;
    }
    .feedback-success .material-icons {
        font-size: 64px;
        color: #22c55e;
        margin-bottom: 16px;
    }
    .feedback-success h3 {
        margin: 0 0 8px 0;
        color: #1f2937;
    }
    .feedback-success p {
        color: #6b7280;
        margin: 0;
    }

    /* ==================== Settings Button & Modal (Feature f16) ==================== */
    .settings-fab {
        position: fixed;
        bottom: 90px;
        right: 20px;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: linear-gradient(135deg, #4b5563, #374151);
        color: white;
        border: none;
        cursor: pointer;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 1000;
        transition: transform 0.2s, box-shadow 0.2s;
    }
    .settings-fab:hover {
        transform: scale(1.05);
        box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
    }
    .settings-fab .material-icons {
        font-size: 22px;
    }

    .settings-modal-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 2000;
    }
    .settings-modal-overlay.active {
        display: flex;
    }

    .settings-modal {
        background: white;
        border-radius: 16px;
        width: 90%;
        max-width: 500px;
        max-height: 90vh;
        overflow-y: auto;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    }

    .settings-modal-header {
        padding: 20px 24px;
        border-bottom: 1px solid #e5e7eb;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .settings-modal-header h3 {
        margin: 0;
        font-size: 18px;
        color: #1f2937;
    }
    .settings-modal-close {
        background: none;
        border: none;
        cursor: pointer;
        color: #6b7280;
        padding: 4px;
    }
    .settings-modal-close:hover {
        color: #1f2937;
    }

    .settings-modal-body {
        padding: 24px;
    }

    .settings-section {
        margin-bottom: 24px;
    }
    .settings-section:last-child {
        margin-bottom: 0;
    }
    .settings-section h4 {
        margin: 0 0 16px 0;
        font-size: 15px;
        color: #374151;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .settings-section h4 .material-icons {
        font-size: 20px;
        color: #6C1B1B;
    }

    .phase-duration-grid {
        display: grid;
        gap: 12px;
    }
    .phase-duration-row {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .phase-duration-row label {
        flex: 1;
        font-size: 14px;
        color: #4b5563;
    }
    .phase-duration-row input[type="number"] {
        width: 70px;
        padding: 8px 10px;
        border: 1px solid #d1d5db;
        border-radius: 6px;
        font-size: 14px;
        text-align: center;
    }
    .phase-duration-row input[type="number"]:focus {
        outline: none;
        border-color: #6C1B1B;
        box-shadow: 0 0 0 3px rgba(108, 27, 27, 0.1);
    }
    .phase-duration-row span {
        font-size: 13px;
        color: #9ca3af;
    }

    .settings-save-btn {
        width: 100%;
        padding: 14px 24px;
        background: linear-gradient(135deg, #6C1B1B, #8B2525);
        color: white;
        border: none;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 500;
        cursor: pointer;
        margin-top: 16px;
        transition: opacity 0.2s;
    }
    .settings-save-btn:hover {
        opacity: 0.9;
    }
    .settings-save-btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

    .settings-reset-btn {
        width: 100%;
        padding: 10px 20px;
        background: transparent;
        color: #6b7280;
        border: 1px solid #d1d5db;
        border-radius: 8px;
        font-size: 14px;
        cursor: pointer;
        margin-top: 8px;
        transition: background 0.2s;
    }
    .settings-reset-btn:hover {
        background: #f3f4f6;
    }

    .settings-saved-toast {
        position: fixed;
        bottom: 150px;
        left: 50%;
        transform: translateX(-50%);
        background: #22c55e;
        color: white;
        padding: 12px 24px;
        border-radius: 8px;
        font-size: 14px;
        font-weight: 500;
        box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
        display: none;
        z-index: 3000;
    }
    .settings-saved-toast.show {
        display: block;
        animation: toastFadeInOut 2s ease;
    }
    @keyframes toastFadeInOut {
        0% { opacity: 0; transform: translateX(-50%) translateY(20px); }
        15% { opacity: 1; transform: translateX(-50%) translateY(0); }
        85% { opacity: 1; transform: translateX(-50%) translateY(0); }
        100% { opacity: 0; transform: translateX(-50%) translateY(-20px); }
    }

    /* ==================== Quick Actions Bar (Feature f26) ==================== */
    .quick-actions-bar {
        display: flex;
        justify-content: center;
        gap: 12px;
        margin: 16px 0 20px 0;
        padding: 0 12px;
    }

    .quick-action-btn {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-width: 80px;
        min-height: 56px;
        padding: 8px 16px;
        border: none;
        border-radius: 12px;
        background: #f3f4f6;
        color: #374151;
        font-size: 12px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.2s ease;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .quick-action-btn:hover {
        background: #e5e7eb;
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }

    .quick-action-btn:active {
        transform: translateY(0);
        box-shadow: none;
    }

    .quick-action-btn .material-icons {
        font-size: 24px;
        margin-bottom: 2px;
    }

    /* +5 Min Button - Blau */
    .quick-action-btn.extend-btn {
        background: #dbeafe;
        color: #1d4ed8;
    }
    .quick-action-btn.extend-btn:hover {
        background: #bfdbfe;
    }

    /* Pause Button - Orange */
    .quick-action-btn.pause-btn {
        background: #fef3c7;
        color: #d97706;
    }
    .quick-action-btn.pause-btn:hover {
        background: #fde68a;
    }
    .quick-action-btn.pause-btn.paused {
        background: #d97706;
        color: white;
    }
    .quick-action-btn.pause-btn.paused:hover {
        background: #b45309;
    }

    /* Skip Button - Grau */
    .quick-action-btn.skip-btn {
        background: #f3f4f6;
        color: #6b7280;
    }
    .quick-action-btn.skip-btn:hover {
        background: #e5e7eb;
    }

    /* Responsive: Tablet-First */
    @media (max-width: 600px) {
        .quick-actions-bar {
            flex-wrap: wrap;
        }
        .quick-action-btn {
            flex: 1;
            min-width: 70px;
        }
    }

    /* Lesson Timeline (horizontal) */
    .lesson-timeline {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        background: #f8f9fa;
        border-radius: 12px;
        padding: 20px;
        margin-bottom: 20px;
        position: relative;
    }

    .lesson-timeline::before {
        content: '';
        position: absolute;
        top: 35px;
        left: 50px;
        right: 50px;
        height: 4px;
        background: #e5e7eb;
        z-index: 0;
    }

    .lesson-phase-step {
        display: flex;
        flex-direction: column;
        align-items: center;
        z-index: 1;
        flex: 1;
        cursor: default;
    }

    .lesson-phase-dot {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: #e5e7eb;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 10px;
        transition: all 0.3s ease;
    }

    .lesson-phase-dot .material-icons {
        font-size: 18px;
        color: #9ca3af;
    }

    .lesson-phase-dot.completed {
        background: #22c55e;
    }

    .lesson-phase-dot.completed .material-icons {
        color: white;
    }

    .lesson-phase-dot.current {
        background: #6C1B1B;
        box-shadow: 0 0 0 6px rgba(108, 27, 27, 0.2);
        transform: scale(1.1);
    }

    .lesson-phase-dot.current .material-icons {
        color: white;
    }

    .lesson-phase-name {
        font-size: 12px;
        font-weight: 600;
        color: #6b7280;
        text-align: center;
    }

    .lesson-phase-name.current {
        color: #6C1B1B;
    }

    .lesson-phase-duration {
        font-size: 11px;
        color: #9ca3af;
        margin-top: 2px;
    }

    /* Lesson Progress Bar */
    .lesson-progress-container {
        background: #f3f4f6;
        border-radius: 8px;
        height: 8px;
        margin-bottom: 20px;
        overflow: hidden;
    }

    .lesson-progress-bar {
        height: 100%;
        background: linear-gradient(90deg, #22c55e, #16a34a);
        transition: width 0.5s ease;
    }

    .lesson-progress-bar.warning {
        background: linear-gradient(90deg, #f59e0b, #d97706);
    }

    .lesson-progress-bar.overtime {
        background: linear-gradient(90deg, #ef4444, #dc2626);
    }

    /* Lesson Control Buttons */
    .lesson-controls {
        display: flex;
        gap: 12px;
        margin-bottom: 20px;
    }

    .lesson-btn {
        flex: 1;
        padding: 14px 20px;
        border: none;
        border-radius: 10px;
        font-weight: 600;
        font-size: 14px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        transition: all 0.2s ease;
        min-height: 48px;  /* Feature f32: Large Touch Targets */
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .lesson-btn-primary {
        background: #6C1B1B;
        color: white;
    }

    .lesson-btn-primary:hover {
        background: #8B2525;
        transform: translateY(-1px);
    }

    .lesson-btn-secondary {
        background: #f3f4f6;
        color: #374151;
    }

    .lesson-btn-secondary:hover {
        background: #e5e7eb;
    }

    .lesson-btn-danger {
        background: #fef2f2;
        color: #dc2626;
        border: 1px solid #fecaca;
    }

    .lesson-btn-danger:hover {
        background: #fee2e2;
    }

    .lesson-btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

    /* Lesson Suggestions */
    .lesson-suggestions {
        background: #fffbeb;
        border-radius: 12px;
        padding: 20px;
        margin-bottom: 20px;
    }

    .lesson-suggestions-title {
        font-weight: 600;
        color: #92400e;
        margin-bottom: 12px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .lesson-suggestion-item {
        background: white;
        border: 1px solid #fde68a;
        border-radius: 10px;
        padding: 14px;
        margin-bottom: 10px;
        display: flex;
        align-items: center;
        gap: 12px;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .lesson-suggestion-item:hover {
        border-color: #f59e0b;
        box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    }

    .lesson-suggestion-item:last-child {
        margin-bottom: 0;
    }

    .lesson-suggestion-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: #fef3c7;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .lesson-suggestion-icon .material-icons {
        color: #d97706;
    }

    .lesson-suggestion-content {
        flex: 1;
    }

    .lesson-suggestion-title {
        font-weight: 600;
        color: #1a1a2e;
        font-size: 14px;
    }

    .lesson-suggestion-desc {
        font-size: 12px;
        color: #6b7280;
        margin-top: 2px;
    }

    .lesson-suggestion-time {
        font-size: 11px;
        color: #9ca3af;
        background: #f3f4f6;
        padding: 4px 8px;
        border-radius: 4px;
    }

    /* Subject Badge (Feature f18) */
    .subject-badge {
        font-size: 10px;
        background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
        color: white;
        padding: 2px 6px;
        border-radius: 10px;
        margin-left: 6px;
        font-weight: 500;
        vertical-align: middle;
    }

    .lesson-suggestion-item.subject-specific {
        border-left: 3px solid #3b82f6;
        background: linear-gradient(90deg, rgba(59, 130, 246, 0.05) 0%, transparent 100%);
    }

    /* Lesson Start Form */
    .lesson-start-form {
        background: white;
        border: 1px solid #e5e7eb;
        border-radius: 12px;
        padding: 24px;
    }

    .lesson-form-title {
        font-size: 18px;
        font-weight: 600;
        color: #1a1a2e;
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .lesson-form-group {
        margin-bottom: 16px;
    }

    .lesson-form-label {
        display: block;
        font-weight: 500;
        color: #374151;
        margin-bottom: 6px;
        font-size: 14px;
    }

    .lesson-form-input,
    .lesson-form-select {
        width: 100%;
        padding: 10px 14px;
        border: 1px solid #d1d5db;
        border-radius: 8px;
        font-size: 14px;
        transition: border-color 0.2s ease;
    }

    .lesson-form-input:focus,
    .lesson-form-select:focus {
        outline: none;
        border-color: #6C1B1B;
        box-shadow: 0 0 0 3px rgba(108, 27, 27, 0.1);
    }

    /* Template-Auswahl Styling (Feature f37) */
    .template-info {
        margin-top: 6px;
        padding: 8px 12px;
        background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
        border-radius: 6px;
        font-size: 13px;
        color: #0369a1;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .template-duration {
        font-weight: 600;
    }

    /* Phasendauern-Preview (Feature f37) */
    .phase-durations-preview {
        margin-top: 12px;
        padding: 12px;
        background: #f8fafc;
        border: 1px solid #e2e8f0;
        border-radius: 8px;
    }
    .preview-title {
        font-size: 12px;
        color: #64748b;
        margin-bottom: 8px;
        font-weight: 500;
    }
    .preview-phases {
        display: flex;
        gap: 6px;
        flex-wrap: wrap;
        margin-bottom: 8px;
    }
    .preview-phase {
        padding: 4px 8px;
        background: white;
        border: 1px solid #e2e8f0;
        border-radius: 4px;
        font-size: 12px;
        font-weight: 500;
        color: #475569;
    }
    .preview-phase[data-phase="einstieg"] { border-left: 3px solid #4A90E2; }
    .preview-phase[data-phase="erarbeitung"] { border-left: 3px solid #F5A623; }
    .preview-phase[data-phase="sicherung"] { border-left: 3px solid #7ED321; }
    .preview-phase[data-phase="transfer"] { border-left: 3px solid #9013FE; }
    .preview-phase[data-phase="reflexion"] { border-left: 3px solid #9B9B9B; }
    .preview-total {
        font-size: 13px;
        font-weight: 600;
        color: #334155;
    }

    /* Template optgroup styling */
    #lessonTemplate optgroup {
        font-weight: 600;
        font-style: normal;
    }
    #lessonTemplate option {
        font-weight: normal;
        padding: 8px;
    }

    /* Lesson Ended State */
    .lesson-ended {
        text-align: center;
        padding: 40px 20px;
        background: #f0fdf4;
        border-radius: 12px;
        margin-bottom: 20px;
    }

    .lesson-ended .material-icons {
        font-size: 64px;
        color: #22c55e;
        margin-bottom: 16px;
    }

    .lesson-ended h3 {
        color: #166534;
        margin-bottom: 8px;
        font-size: 20px;
    }

    .lesson-ended p {
        color: #6b7280;
        margin-bottom: 20px;
    }

    .lesson-summary {
        background: white;
        border-radius: 10px;
        padding: 16px;
        text-align: left;
        display: inline-block;
        min-width: 200px;
    }

    .lesson-summary-item {
        display: flex;
        justify-content: space-between;
        padding: 8px 0;
        border-bottom: 1px solid #e5e7eb;
    }

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

    .lesson-summary-label {
        color: #6b7280;
        font-size: 13px;
    }

    .lesson-summary-value {
        font-weight: 600;
        color: #1a1a2e;
        font-size: 13px;
    }

    /* Homework Section (Feature f20) */
    .homework-section {
        background: white;
        border-radius: 12px;
        padding: 16px;
        margin-top: 16px;
        text-align: left;
    }

    .homework-section-header {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 12px;
        color: #1a1a2e;
        font-weight: 600;
    }

    .homework-input-group {
        display: flex;
        gap: 8px;
        margin-bottom: 12px;
    }

    .homework-input {
        flex: 1;
        padding: 10px 12px;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        font-size: 14px;
    }

    .homework-input:focus {
        outline: none;
        border-color: #3b82f6;
    }

    .homework-add-btn {
        padding: 10px 16px;
        background: #3b82f6;
        color: white;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 4px;
    }

    .homework-add-btn:hover {
        background: #2563eb;
    }

    .homework-list {
        margin-top: 12px;
    }

    .homework-item {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px;
        background: #f9fafb;
        border-radius: 8px;
        margin-bottom: 8px;
    }

    .homework-item-checkbox {
        width: 18px;
        height: 18px;
        cursor: pointer;
    }

    .homework-item-title {
        flex: 1;
        font-size: 14px;
    }

    .homework-item.completed .homework-item-title {
        text-decoration: line-through;
        color: #9ca3af;
    }

    .homework-item-due {
        font-size: 12px;
        color: #6b7280;
    }

    .homework-item-due.overdue {
        color: #dc2626;
        font-weight: 500;
    }

    .homework-item-delete {
        background: none;
        border: none;
        color: #9ca3af;
        cursor: pointer;
        padding: 4px;
    }

    .homework-item-delete:hover {
        color: #dc2626;
    }

    /* Materials Section (Feature f19) */
    .materials-section {
        background: white;
        border-radius: 12px;
        padding: 16px;
        margin-top: 16px;
        text-align: left;
    }

    .materials-section-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 12px;
    }

    .materials-section-title {
        display: flex;
        align-items: center;
        gap: 8px;
        color: #1a1a2e;
        font-weight: 600;
    }

    .materials-add-btn {
        padding: 6px 12px;
        background: #f3f4f6;
        color: #374151;
        border: 1px solid #e5e7eb;
        border-radius: 6px;
        cursor: pointer;
        font-size: 13px;
        display: flex;
        align-items: center;
        gap: 4px;
    }

    .materials-add-btn:hover {
        background: #e5e7eb;
    }

    .materials-list {
        display: grid;
        gap: 8px;
    }

    .material-item {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        background: #f9fafb;
        border-radius: 8px;
        text-decoration: none;
        color: inherit;
        transition: background 0.2s;
    }

    .material-item:hover {
        background: #e5e7eb;
    }

    .material-item-icon {
        width: 32px;
        height: 32px;
        background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
    }

    .material-item-icon .material-icons {
        font-size: 18px;
    }

    .material-item-content {
        flex: 1;
        min-width: 0;
    }

    .material-item-title {
        font-size: 14px;
        font-weight: 500;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .material-item-meta {
        font-size: 12px;
        color: #6b7280;
    }

    .material-item-actions {
        display: flex;
        gap: 4px;
    }

    .material-item-action {
        background: none;
        border: none;
        color: #9ca3af;
        cursor: pointer;
        padding: 4px;
    }

    .material-item-action:hover {
        color: #374151;
    }

    /* Material Type Icons */
    .material-type-document { background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%); }
    .material-type-video { background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%); }
    .material-type-link { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }
    .material-type-image { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); }
    .material-type-worksheet { background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%); }
    .material-type-presentation { background: linear-gradient(135deg, #ec4899 0%, #db2777 100%); }

    /* Homework Item Styling (Feature f20) */
    .homework-checkbox {
        width: 18px;
        height: 18px;
        cursor: pointer;
        accent-color: #3b82f6;
    }

    .homework-content {
        flex: 1;
        min-width: 0;
    }

    .homework-title {
        font-size: 14px;
        font-weight: 500;
    }

    .homework-due {
        font-size: 12px;
        color: #6b7280;
        margin-top: 2px;
    }

    .homework-item.completed .homework-title {
        text-decoration: line-through;
        color: #9ca3af;
    }

    .homework-delete-btn {
        background: none;
        border: none;
        color: #9ca3af;
        cursor: pointer;
        padding: 4px;
        border-radius: 4px;
    }

    .homework-delete-btn:hover {
        color: #dc2626;
        background: #fee2e2;
    }

    .homework-empty {
        text-align: center;
        color: #6b7280;
        font-size: 13px;
        padding: 20px;
    }

    /* Material Item Styling (Feature f19) */
    .material-type-icon {
        color: #3b82f6;
        font-size: 20px;
    }

    .material-content {
        flex: 1;
        min-width: 0;
    }

    .material-title {
        font-size: 14px;
        font-weight: 500;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .material-phase {
        font-size: 12px;
        color: #6b7280;
        margin-top: 2px;
    }

    .material-link-btn {
        background: none;
        border: none;
        color: #3b82f6;
        cursor: pointer;
        padding: 6px;
        border-radius: 4px;
        display: flex;
        align-items: center;
        text-decoration: none;
    }

    .material-link-btn:hover {
        background: #eff6ff;
    }

    .material-delete-btn {
        background: none;
        border: none;
        color: #9ca3af;
        cursor: pointer;
        padding: 4px;
        border-radius: 4px;
    }

    .material-delete-btn:hover {
        color: #dc2626;
        background: #fee2e2;
    }

    .materials-empty {
        text-align: center;
        color: #6b7280;
        font-size: 13px;
        padding: 20px;
    }

    /* Analytics Section (Phase 5) */
    .analytics-section {
        background: white;
        border-radius: 12px;
        padding: 16px;
        margin-top: 16px;
        text-align: left;
    }

    .analytics-section-header {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 16px;
        color: #1a1a2e;
        font-weight: 600;
    }

    .analytics-grid {
        display: grid;
        grid-template-columns: 1fr 120px;
        gap: 16px;
    }

    .analytics-card {
        background: #f9fafb;
        border-radius: 8px;
        padding: 12px;
    }

    .analytics-card-title {
        font-size: 12px;
        color: #6b7280;
        margin-bottom: 8px;
        text-transform: uppercase;
    }

    .analytics-phase-bars {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .analytics-phase-bar {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .analytics-phase-label {
        width: 70px;
        font-size: 12px;
        color: #374151;
    }

    .analytics-bar-container {
        flex: 1;
        height: 16px;
        background: #e5e7eb;
        border-radius: 4px;
        overflow: hidden;
        position: relative;
    }

    .analytics-bar-planned {
        position: absolute;
        height: 100%;
        background: #d1d5db;
        border-radius: 4px;
    }

    .analytics-bar-actual {
        position: absolute;
        height: 100%;
        border-radius: 4px;
    }

    .analytics-bar-actual.under-time { background: #10b981; }
    .analytics-bar-actual.on-time { background: #3b82f6; }
    .analytics-bar-actual.over-time { background: #f59e0b; }
    .analytics-bar-actual.way-over { background: #ef4444; }

    .analytics-phase-time {
        width: 50px;
        font-size: 11px;
        color: #6b7280;
        text-align: right;
    }

    .analytics-overtime-value {
        font-size: 28px;
        font-weight: 600;
        color: #f59e0b;
        text-align: center;
    }

    .analytics-overtime-phases {
        font-size: 12px;
        color: #6b7280;
        text-align: center;
    }

    /* Reflection Section (Phase 5) */
    .reflection-section {
        background: white;
        border-radius: 12px;
        padding: 16px;
        margin-top: 16px;
        text-align: left;
    }

    .reflection-section-header {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 16px;
        color: #1a1a2e;
        font-weight: 600;
    }

    .reflection-form {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .reflection-rating {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .reflection-label {
        font-size: 13px;
        color: #374151;
    }

    .rating-stars {
        display: flex;
        gap: 4px;
    }

    .star-btn {
        background: none;
        border: none;
        font-size: 24px;
        color: #d1d5db;
        cursor: pointer;
        padding: 0;
        transition: color 0.2s;
    }

    .star-btn:hover,
    .star-btn.active {
        color: #f59e0b;
    }

    .reflection-textarea {
        width: 100%;
        min-height: 80px;
        padding: 10px 12px;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        font-size: 14px;
        resize: vertical;
        font-family: inherit;
    }

    .reflection-textarea:focus {
        outline: none;
        border-color: #3b82f6;
    }

    .reflection-input {
        width: 100%;
        padding: 10px 12px;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        font-size: 14px;
    }

    .reflection-input:focus {
        outline: none;
        border-color: #3b82f6;
    }

    .reflection-save-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 20px;
        background: #10b981;
        color: white;
        border: none;
        border-radius: 8px;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        transition: background 0.2s;
    }

    .reflection-save-btn:hover {
        background: #059669;
    }

    .reflection-save-btn:disabled {
        background: #9ca3af;
        cursor: not-allowed;
    }

    /* Responsive Lesson Mode */
    @media (max-width: 600px) {
        .lesson-timer-display {
            font-size: 48px;
        }

        .lesson-timeline {
            overflow-x: auto;
            padding-bottom: 10px;
        }

        .lesson-controls {
            flex-direction: column;
        }

        .lesson-phase-name {
            font-size: 10px;
        }
    }

    /* ==================== High Contrast Mode (Feature f39) ==================== */
    /* Aktiviert durch Klasse .high-contrast auf .companion-container */
    .companion-container.high-contrast .lesson-header {
        background: #000 !important;
        border: 3px solid #fff;
    }

    .companion-container.high-contrast .lesson-header h2,
    .companion-container.high-contrast .visual-timer-time,
    .companion-container.high-contrast .visual-timer-phase {
        color: #fff !important;
        text-shadow: 1px 1px 2px #000;
    }

    .companion-container.high-contrast .visual-timer-progress {
        stroke-width: 10 !important;
    }

    .companion-container.high-contrast .visual-timer-progress.time-plenty {
        stroke: #00ff00 !important;
    }

    .companion-container.high-contrast .visual-timer-progress.time-warning {
        stroke: #ffff00 !important;
    }

    .companion-container.high-contrast .visual-timer-progress.time-critical {
        stroke: #ff0000 !important;
    }

    .companion-container.high-contrast .quick-action-btn {
        border: 2px solid #000;
        font-weight: 700;
    }

    .companion-container.high-contrast .lesson-btn {
        border: 2px solid #000;
        font-weight: 700;
    }

    /* Keyboard Shortcut Indicator (Feature f34) */
    .keyboard-hint {
        position: fixed;
        bottom: 20px;
        right: 20px;
        background: rgba(0, 0, 0, 0.8);
        color: #fff;
        padding: 12px 16px;
        border-radius: 8px;
        font-size: 12px;
        z-index: 1000;
        display: none;
    }

    .keyboard-hint.visible {
        display: block;
    }

    .keyboard-hint kbd {
        display: inline-block;
        background: #444;
        padding: 2px 6px;
        border-radius: 4px;
        margin: 0 2px;
        font-family: monospace;
    }

    /* ==================== Tablet-First Responsive (Feature f24 + f31) ==================== */
    /* Mobile Breakpoints: 600px (Phone), 900px (Tablet Portrait), 1200px (Tablet Landscape/Desktop) */

    /* Base: Optimiert fuer Tablet (900-1200px) */
    .lesson-container {
        max-width: 100%;
        padding: 16px;
    }

    .lesson-header {
        padding: 20px;
    }

    .visual-timer-svg {
        width: 160px;
        height: 160px;
    }

    .visual-timer-time {
        font-size: 28px;
    }

    /* Large Desktop (1200px+) */
    @media (min-width: 1200px) {
        .lesson-container {
            max-width: 900px;
            margin: 0 auto;
            padding: 24px;
        }

        .lesson-header {
            padding: 32px;
        }

        .visual-timer-svg {
            width: 180px;
            height: 180px;
        }

        .visual-timer-time {
            font-size: 32px;
        }

        .quick-actions-bar {
            gap: 16px;
        }

        .quick-action-btn {
            min-width: 100px;
            min-height: 64px;
            font-size: 14px;
        }
    }

    /* Tablet Portrait (600-900px) */
    @media (max-width: 900px) {
        .lesson-header h2 {
            font-size: 18px;
        }

        .visual-timer-svg {
            width: 140px;
            height: 140px;
        }

        .visual-timer-time {
            font-size: 24px;
        }

        .lesson-timeline {
            gap: 8px;
        }

        .lesson-phase-dot {
            width: 36px;
            height: 36px;
        }

        .lesson-phase-name {
            font-size: 10px;
        }

        .lesson-controls {
            gap: 10px;
        }
    }

    /* Phone (< 600px) */
    @media (max-width: 600px) {
        .lesson-container {
            padding: 12px;
        }

        .lesson-header {
            padding: 16px;
            border-radius: 12px;
        }

        .lesson-header h2 {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .visual-timer-svg {
            width: 120px;
            height: 120px;
        }

        .visual-timer-time {
            font-size: 20px;
        }

        .visual-timer-phase {
            font-size: 12px;
        }

        .quick-actions-bar {
            gap: 8px;
            margin: 12px 0 16px 0;
        }

        .quick-action-btn {
            min-width: 60px;
            min-height: 52px;
            padding: 6px 10px;
            font-size: 11px;
        }

        .quick-action-btn .material-icons {
            font-size: 20px;
        }

        .lesson-timeline {
            flex-wrap: nowrap;
            overflow-x: auto;
            padding: 8px 0;
            gap: 4px;
            -webkit-overflow-scrolling: touch;
        }

        .lesson-phase-step {
            min-width: 60px;
            flex-shrink: 0;
        }

        .lesson-phase-dot {
            width: 32px;
            height: 32px;
        }

        .lesson-phase-name {
            font-size: 9px;
            max-width: 55px;
        }

        .lesson-controls {
            flex-direction: column;
            gap: 8px;
        }

        .lesson-btn {
            width: 100%;
            padding: 12px 16px;
        }

        .lesson-suggestions {
            padding: 16px;
        }

        .lesson-suggestions-title {
            font-size: 14px;
        }
    }

    /* Touch-Optimierung fuer alle Tablets/Phones */
    @media (hover: none) and (pointer: coarse) {
        .quick-action-btn,
        .lesson-btn,
        .mode-btn {
            /* Groessere Touch-Targets auf Touch-Geraeten */
            min-height: 52px;
        }

        .quick-action-btn:active,
        .lesson-btn:active {
            transform: scale(0.98);
            opacity: 0.9;
        }
    }
    """