/* ========================================
   MAPLELING FOUNDATION - DESIGN SYSTEM
   ======================================== */

/* Reset and Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* MapleLing Canadian Colors */
    --color-maple-red: #dc2626;
    --color-maple-red-light: #ef4444;
    --color-navy: #1e3a5f;
    --color-navy-light: #2d5a87;
    --color-soft-blue: #7dd3fc;
    --color-background: #f8fafc;
    --color-surface: rgba(255, 255, 255, 0.75);
    --color-text-primary: #1a202c;
    --color-text-secondary: #4a5568;
    --color-text-tertiary: #718096;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Radius */
    --radius-sm: 0.375rem;
    --radius-base: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: transparent;
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========================================
   PROGRESS HEADER
   ======================================== */

.progress-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.progress-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 800px;
    margin: 0 auto;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-logo {
    height: 32px;
    width: auto;
    object-fit: contain;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.header-logo:hover {
    transform: scale(1.05);
    opacity: 0.8;
}

.back-btn, .menu-btn {
    width: 44px;
    height: 44px;
    border: none;
    background: transparent;
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
}

.back-btn:hover, .menu-btn:hover {
    background: var(--color-border-light);
    color: var(--color-text-primary);
}

.progress-info {
    flex: 1;
    margin: 0 var(--spacing-lg);
    text-align: center;
}

.lesson-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-soft-blue) 0%, var(--color-navy) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
    width: 11.11%; /* 1/9 cards */
}

.progress-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-weight: 500;
}

/* ========================================
   CARD CONTAINER
   ======================================== */

.card-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    min-height: calc(100vh - 140px); /* Account for header and footer */
}

/* ========================================
   CARD TYPES
   ======================================== */

.learning-card {
    background: transparent;
    border-radius: var(--radius-xl);
    box-shadow: none;
    padding: var(--spacing-2xl);
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.learning-card.active {
    opacity: 1;
    transform: translateY(0);
}

.card-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.card-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.85);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.card-instruction {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.5;
    background: rgba(255, 255, 255, 0.85);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.card-content {
    margin-bottom: var(--spacing-2xl);
}

/* Core Structure Display */
.core-structure {
    background: linear-gradient(135deg, var(--color-soft-blue) 0%, rgba(125, 211, 252, 0.1) 100%);
    border: 2px solid rgba(125, 211, 252, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.structure-french {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.structure-french:hover {
    color: var(--color-navy-light);
    transform: scale(1.02);
}

/* Audio icon */
.audio-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    font-size: 14px;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.structure-french:hover .audio-icon,
.example-french:hover .audio-icon,
.dialogue-line span:hover .audio-icon,
.skill-text:hover .audio-icon {
    opacity: 1;
}

.structure-english {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    font-style: italic;
}

/* Examples */
.examples-section {
    margin: var(--spacing-xl) 0;
}

.examples-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.example-item {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.example-item:hover {
    border-color: var(--color-soft-blue);
    box-shadow: var(--shadow-sm);
}

.example-french {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.example-english {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

/* Large example boxes with navy background */
.examples-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.example-box-large {
    background: linear-gradient(135deg, var(--color-soft-blue) 0%, rgba(125, 211, 252, 0.1) 100%);
    border: 2px solid rgba(125, 211, 252, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.example-box-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    border-color: var(--color-soft-blue);
}

.example-french-large {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.example-french-large .audio-icon {
    font-size: 1.5rem;
}

.example-english-large {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* Tips */
.tip-section {
    background: linear-gradient(135deg, #fef3c7 0%, rgba(254, 243, 199, 0.3) 100%);
    border: 1px solid #fbbf24;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.tip-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.tip-icon {
    font-size: var(--font-size-lg);
}

.tip-type {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #92400e;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tip-text {
    color: #92400e;
    font-size: var(--font-size-base);
    line-height: 1.5;
}

/* Contextual Tips - Subtle helper text */
.contextual-tip {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(107, 114, 128, 0.05);
    border-left: 2px solid rgba(107, 114, 128, 0.2);
    border-radius: 0 4px 4px 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-style: italic;
    line-height: 1.4;
}

/* Foundation Completion Modal */
.completion-modal {
    text-align: center;
    padding: var(--spacing-xl);
}

.completion-header {
    margin-bottom: var(--spacing-xl);
}

.completion-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.completion-header h2 {
    color: var(--color-maple-red);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

.completion-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: var(--color-background);
    border-radius: 12px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-maple-red);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.completion-skills {
    margin: var(--spacing-xl) 0;
    text-align: left;
}

.completion-skills h3 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-navy);
}

.skill-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.skill-item {
    padding: var(--spacing-sm);
    background: var(--color-surface);
    border-radius: 6px;
    border-left: 3px solid var(--color-success);
}

.completion-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.completion-actions .btn-primary,
.completion-actions .btn-secondary {
    min-width: 200px;
}

/* ========================================
   NAVIGATION FOOTER
   ======================================== */

.nav-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    min-height: 48px;
}

.nav-btn.primary {
    background: var(--color-navy);
    color: white;
    flex: 1;
    justify-content: center;
}

.nav-btn.primary:hover:not(:disabled) {
    background: var(--color-navy-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.nav-btn.secondary {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.nav-btn.secondary:hover:not(:disabled) {
    background: var(--color-border-light);
    color: var(--color-text-primary);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .progress-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .progress-container {
        gap: var(--spacing-sm);
    }
    
    .header-left {
        gap: var(--spacing-sm);
    }
    
    .header-logo {
        height: 28px;
    }
    
    .progress-info {
        margin: 0 var(--spacing-md);
    }
    
    .card-container {
        padding: var(--spacing-lg) var(--spacing-md);
        min-height: calc(100vh - 120px);
    }
    
    .learning-card {
        padding: var(--spacing-xl);
    }
    
    .card-title {
        font-size: var(--font-size-xl);
    }
    
    .structure-french {
        font-size: var(--font-size-2xl);
    }
    
    .nav-footer {
        padding: var(--spacing-md);
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-btn {
        width: 100%;
        justify-content: center;
    }
    
    .nav-btn.secondary {
        order: -1;
    }
}

@media (max-width: 480px) {
    .learning-card {
        padding: var(--spacing-lg);
    }
    
    .card-title {
        font-size: var(--font-size-lg);
    }
    
    .structure-french {
        font-size: var(--font-size-xl);
    }
    
    .core-structure {
        padding: var(--spacing-lg);
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.card-enter-right {
    animation: slideInRight 0.3s ease-out;
}

.card-enter-left {
    animation: slideInLeft 0.3s ease-out;
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
button:focus-visible,
.example-item:focus-visible,
.structure-french:focus-visible {
    outline: 2px solid var(--color-soft-blue);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-text-secondary: #2d3748;
        --color-border: #4a5568;
    }
}

/* ========================================
   PRACTICE CARD STYLES
   ======================================== */

.practice-question {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.practice-question h3 {
    font-size: var(--font-size-lg);
    color: var(--color-navy);
    font-weight: 600;
}

.practice-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.practice-option {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.practice-option:hover {
    border-color: var(--color-soft-blue);
    background: var(--color-background);
}

.practice-option.selected {
    border-width: 3px;
}

.practice-option.correct {
    border-color: var(--color-success);
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.practice-option.incorrect {
    border-color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.practice-feedback {
    margin-top: var(--spacing-lg);
}

.feedback-message {
    padding: var(--spacing-lg);
    border-radius: var(--radius-base);
    font-weight: 500;
    text-align: center;
}

.feedback-message.correct {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.feedback-message.incorrect {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

/* ========================================
   SENTENCE BUILDING STYLES
   ======================================== */

.sentence-building-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.question-section {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-background);
    border-radius: var(--radius-lg);
}

.question-french {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.instruction-english {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.words-pool {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--color-background);
    border-radius: var(--radius-lg);
    min-height: 120px;
}

.word-box {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-navy);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.word-box:hover {
    border-color: var(--color-soft-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.word-box.selected {
    background: var(--color-soft-blue);
    border-color: var(--color-navy);
    color: white;
    transform: scale(0.95);
}

.sentence-display {
    background: white;
    border: 3px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sentence-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    transition: all var(--transition-base);
}

.sentence-text.placeholder-text,
.placeholder-text {
    color: var(--color-text-tertiary);
    font-style: italic;
    font-weight: 400;
}

.sentence-text.incorrect {
    color: var(--color-error);
}

.sentence-text.correct {
    color: var(--color-success);
    animation: successPulse 0.5s ease-out;
}

.sentence-text .checkmark {
    color: var(--color-success);
    font-size: var(--font-size-3xl);
    margin-left: var(--spacing-sm);
}

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

.sentence-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.btn-reset {
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-reset:hover {
    background: white;
    border-color: var(--color-navy);
    color: var(--color-navy);
}

.educational-note {
    background: linear-gradient(135deg, #fef3c7 0%, rgba(254, 243, 199, 0.3) 100%);
    border: 1px solid #fbbf24;
    border-radius: var(--radius-base);
    padding: var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-sm);
    color: #92400e;
    font-weight: 500;
}

.card-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-top: var(--spacing-xs);
}

/* ========================================
   BUILD PRACTICE STYLES
   ======================================== */

.build-practice {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Template Guide */
.template-guide {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 2px dashed var(--color-navy);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.template-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.template-text {
    font-size: var(--font-size-xl);
    color: var(--color-navy);
    font-weight: 600;
    margin: 0;
    margin-bottom: var(--spacing-xs);
}

.template-translation {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    font-weight: 400;
    margin: 0;
    font-style: italic;
}

/* TTS-enabled Build Practice */
.build-practice-tts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.build-step {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.build-step h4 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.step-options {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.step-option {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.step-option:hover {
    border-color: var(--color-soft-blue);
    background: var(--color-background);
}

.step-option.selected {
    border-color: var(--color-navy);
    background: var(--color-navy);
    color: white;
}

.fixed-text {
    background: var(--color-soft-blue);
    border: 2px solid var(--color-navy);
    border-radius: var(--radius-base);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-navy);
    text-align: center;
    display: inline-block;
}

.step-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.step-input:focus {
    outline: none;
    border-color: var(--color-soft-blue);
}

/* TTS Result Display */
.build-result-tts {
    background: linear-gradient(135deg, var(--color-soft-blue) 0%, rgba(125, 211, 252, 0.1) 100%);
    border: 2px solid rgba(125, 211, 252, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.build-result-tts h4 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
}

.result-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.result-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-navy);
    text-align: center;
    padding: var(--spacing-md);
}

.tts-play-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.tts-play-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.tts-play-btn:active:not(:disabled) {
    transform: translateY(0);
}

.tts-play-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.tts-play-btn .audio-icon {
    font-size: var(--font-size-lg);
}

.attempts-counter {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.attempts-counter span {
    font-weight: 700;
    color: var(--color-navy);
}

.tts-loading {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--color-navy);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

/* Legacy Build Result */
.build-result {
    background: linear-gradient(135deg, var(--color-soft-blue) 0%, rgba(125, 211, 252, 0.1) 100%);
    border: 2px solid rgba(125, 211, 252, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.build-result h4 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.result-french {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-navy);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.result-french:hover {
    color: var(--color-navy-light);
    transform: scale(1.02);
}

.result-english {
    font-size: var(--font-size-xs);
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    font-style: italic;
    opacity: 0.7;
    line-height: 1.4;
}

/* ========================================
   REAL-LIFE USAGE STYLES
   ======================================== */

.scenario-section {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.scenario-title {
    color: var(--color-navy);
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.scenario-title::before {
    content: "🎭";
    font-size: var(--font-size-lg);
}

.dialogue {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.dialogue-line {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-base);
    background: var(--color-surface);
}

.dialogue-line strong {
    color: var(--color-navy);
    margin-right: var(--spacing-sm);
}

.dialogue-line span {
    cursor: pointer;
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.dialogue-line span:hover {
    color: var(--color-navy-light);
}

/* ========================================
   REAL-LIFE USAGE - IMAGE & CULTURE TIP
   ======================================== */

.real-life-image-container,
.real-life-media-container {
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.real-life-image,
.culture-tip-video {
    width: 100%;
    height: auto;
    display: block;
}

.culture-tip-video {
    background: #000;
}

.culture-tip-box {
    background: linear-gradient(135deg, #fef3c7 0%, rgba(254, 243, 199, 0.3) 100%);
    border: 2px solid #fbbf24;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.culture-tip-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.culture-tip-header .tip-icon {
    font-size: var(--font-size-2xl);
}

.culture-tip-header .tip-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #92400e;
    line-height: 1.3;
}

.culture-tip-main {
    color: #92400e;
    font-size: var(--font-size-base);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.culture-tip-response {
    color: #92400e;
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(251, 191, 36, 0.2);
    border-radius: var(--radius-base);
}

.culture-tip-note {
    color: #92400e;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

.vocabulary-section {
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.vocabulary-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.vocab-icon {
    font-size: var(--font-size-lg);
}

.vocab-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: #92400e;
}

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

.vocab-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.vocab-item[onclick] {
    cursor: pointer;
}

.vocab-item[onclick]:hover {
    background: rgba(125, 211, 252, 0.15);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.vocab-item[onclick]:active {
    transform: translateY(0);
}

.vocab-french {
    font-weight: 600;
    color: var(--color-navy);
    min-width: 120px;
}

.vocab-arrow {
    color: var(--color-text-tertiary);
}

.vocab-english {
    color: var(--color-text-secondary);
    flex: 1;
}

.vocab-item .audio-icon {
    font-size: var(--font-size-sm);
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.vocab-item:hover .audio-icon {
    opacity: 1;
}

.response-audio-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-soft-blue);
    color: var(--color-navy);
    border: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin: var(--spacing-md) 0;
}

.response-audio-btn:hover {
    background: #38bdf8;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.response-audio-btn:active {
    transform: translateY(0);
}

.intro-audio-section {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.intro-audio-play-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-maple-red);
    color: white;
    border: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-base);
}

.intro-audio-play-btn:hover {
    background: var(--color-maple-red-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.intro-audio-play-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-base);
}

/* Optional Audio Button - Small, non-intrusive */
.optional-audio-section {
    margin-top: var(--spacing-sm);
    text-align: center;
}

.optional-audio-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-navy);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.optional-audio-btn:hover {
    background: var(--color-navy-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-base);
}

.optional-audio-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.optional-audio-btn .audio-icon {
    font-size: var(--font-size-base);
}

.optional-audio-btn .btn-text {
    font-size: var(--font-size-sm);
}

.culture-tip-conclusion {
    color: #92400e;
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.6;
    margin-top: var(--spacing-md);
}

/* ========================================
   LESSON CLOSE STYLES
   ======================================== */

.skills-section {
    margin-bottom: var(--spacing-xl);
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.skill-item {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.skill-item:hover {
    border-color: var(--color-soft-blue);
    background: var(--color-surface);
}

.skill-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-navy);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.skill-icon {
    font-size: var(--font-size-lg);
}

.progress-section {
    background: linear-gradient(135deg, var(--color-success) 0%, rgba(16, 185, 129, 0.1) 100%);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.progress-status {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-success);
    margin-bottom: var(--spacing-sm);
}

.next-preview {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ========================================
   MOBILE RESPONSIVE ADDITIONS
   ======================================== */

@media (max-width: 768px) {
    .step-options {
        flex-direction: column;
    }
    
    .step-option {
        text-align: center;
    }
    
    .dialogue {
        gap: var(--spacing-xs);
    }
    
    .dialogue-line {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .skills-list {
        gap: var(--spacing-sm);
    }
    
    .skill-item {
        padding: var(--spacing-md);
    }
    
    .skill-text {
        font-size: var(--font-size-base);
    }
}

@media (max-width: 480px) {
    .practice-option {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .build-step {
        padding: var(--spacing-md);
    }
    
    .scenario-section {
        padding: var(--spacing-md);
    }
    
    .result-french {
        font-size: var(--font-size-xl);
    }
}

/* ========================================
   LOADING AND ERROR STATES
   ======================================== */

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-radius: 50%;
    border-top-color: var(--color-navy);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    color: var(--color-error);
    text-align: center;
    margin: var(--spacing-lg) 0;
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    .progress-header,
    .nav-footer {
        display: none;
    }
    
    .learning-card {
        box-shadow: none;
        border: 1px solid var(--color-border);
    }
    
    .card-container {
        padding: 0;
    }
}
/* ========================================
   MENU OVERLAY STYLES
   ======================================== */

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

.menu-content {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    margin: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    animation: slideIn 0.3s ease-out;
}

.menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.menu-header h3 {
    color: var(--color-navy);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin: 0;
}

.menu-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-base);
}

.menu-close:hover {
    color: var(--color-text-primary);
    background: var(--color-border-light);
}

.menu-body {
    padding: var(--spacing-xl);
}

.menu-section {
    margin-bottom: var(--spacing-2xl);
}

.menu-section:last-child {
    margin-bottom: 0;
}

.menu-section h4 {
    color: var(--color-navy);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.menu-section p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.menu-btn-action {
    display: block;
    width: 100%;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-primary);
    font-weight: 500;
}

.menu-btn-action:hover {
    background: var(--color-soft-blue);
    border-color: var(--color-navy);
    color: var(--color-navy);
}

.lesson-list {
    max-height: 300px;
    overflow-y: auto;
}

.lesson-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lesson-item:hover {
    background: var(--color-background);
    border-color: var(--color-soft-blue);
}

.lesson-item.current {
    background: var(--color-soft-blue);
    border-color: var(--color-navy);
    color: var(--color-navy);
    font-weight: 600;
}

.lesson-number {
    background: var(--color-navy);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-right: var(--spacing-md);
    flex-shrink: 0;
}

.lesson-item.current .lesson-number {
    background: var(--color-navy);
}

.lesson-title {
    flex: 1;
    font-size: var(--font-size-base);
}

.lesson-status {
    font-size: var(--font-size-lg);
    margin-left: var(--spacing-sm);
}

.menu-home-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-navy);
    color: white;
    border: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
    margin-top: var(--spacing-md);
}

.menu-home-btn:hover {
    background: var(--color-soft-blue);
    color: var(--color-navy);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.menu-home-btn svg {
    flex-shrink: 0;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Mobile responsive */
@media (max-width: 768px) {
    .menu-content {
        margin: var(--spacing-md);
        max-height: 90vh;
    }
    
    .menu-header,
    .menu-body {
        padding: var(--spacing-lg);
    }
    
    .lesson-item {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .lesson-title {
        font-size: var(--font-size-sm);
    }
}
/* ===================== MapleLing Premium Layer (Desktop-first) ===================== */
:root{
  --ml-bg: #f6f8fc;
  --ml-panel: rgba(255,255,255,.72);
  --ml-surface: #ffffff;
  --ml-ink: #0b1220;
  --ml-muted: #5b667a;
  --ml-border: #e6ebf4;

  --ml-navy: #1e3a5f;
  --ml-soft: #7dd3fc;
  --ml-red: #dc2626;

  --ml-r-lg: 26px;
  --ml-r: 18px;

  --ml-shadow: 0 18px 40px rgba(2,6,23,.10);
  --ml-shadow2: 0 10px 22px rgba(2,6,23,.08);

  --ml-maxw: 1000px;
  --ml-pad: 22px;
}

/* Premium background */
.ml-bg{
  min-height: 100vh;
  background:
    radial-gradient(900px 520px at 18% 10%, rgba(125,211,252,.18), transparent 55%),
    radial-gradient(800px 520px at 86% 0%, rgba(220,38,38,.10), transparent 55%),
    url('assets/images/background_C0.png') center/contain no-repeat fixed,
    var(--ml-bg);
  padding: 28px 18px 90px;
  color: var(--ml-ink);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

/* Remove side padding when showing Intro Card */
.ml-bg:has(.intro-card-wrapper) {
  padding-left: 0;
  padding-right: 0;
}

/* App glass panel */
.ml-app{
  max-width: var(--ml-maxw);
  margin: 0 auto;
  padding: var(--ml-pad);
  background: transparent;
  border: none;
  border-radius: var(--ml-r-lg);
  box-shadow: none;
}

/* ===================== Bridge: style your existing Kiro classes ===================== */

/* Header becomes premium */
.progress-header{
  position: sticky;
  top: 0;
  z-index: 20;
  margin-bottom: 14px;
  border: 1px solid rgba(230,235,244,.95);
  border-radius: 18px;
  box-shadow: var(--ml-shadow2);
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.55);
}

/* header layout spacing if needed */
.progress-container{
  padding: 14px 14px;
}

/* Logo container */
.header-logo{
  width: 40px;
  height: 40px;
  border-radius: 14px;
  cursor: pointer;
}

/* Back button */
.back-btn{
  border: 1px solid var(--ml-border);
  background: rgba(255,255,255,.65);
  padding: 10px 12px;
  border-radius: 14px;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
  backdrop-filter: blur(8px);
}
.back-btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(2,6,23,.10);
  background: rgba(255,255,255,.85);
}

/* Menu button */
.menu-btn{
  border: 1px solid var(--ml-border);
  background: rgba(255,255,255,.65);
  padding: 10px 12px;
  border-radius: 14px;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
  backdrop-filter: blur(8px);
}
.menu-btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(2,6,23,.10);
  background: rgba(255,255,255,.85);
}

/* Lesson title */
.lesson-title{
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ml-ink);
}

/* Progress bar */
.progress-bar{
  height: 11px;
  border-radius: 999px;
  background: #eaf1ff;
  border: 1px solid var(--ml-border);
  overflow: hidden;
}

.progress-fill{
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--ml-soft), var(--ml-navy));
  transition: width .25s ease;
}

.progress-text{
  color: var(--ml-muted);
  font-weight: 700;
  font-size: 13px;
}

/* Main container spacing */
.card-container{
  padding: 0;
  margin-top: 10px;
}

/* Your learning cards (generated) */
.learning-card{
  background: rgba(255,255,255,.75);
  border: 1px solid var(--ml-border);
  border-radius: var(--ml-r);
  box-shadow: var(--ml-shadow2);
  backdrop-filter: blur(8px);
}

/* If you have card header/content classes */
.card-header{
  padding: 18px 18px 10px;
}
.card-title{
  margin: 0 0 6px;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.card-instruction{
  margin: 0;
  color: var(--ml-muted);
}

/* Footer becomes sticky and premium */
.nav-footer{
  position: sticky;
  bottom: 14px;
  margin-top: 16px;
  display:flex;
  justify-content:space-between;
  gap: 12px;
  padding: 12px;
  background: rgba(255,255,255,.55);
  border: 1px solid var(--ml-border);
  border-radius: 18px;
  box-shadow: var(--ml-shadow2);
  backdrop-filter: blur(10px);
}

/* Buttons */
.nav-btn{
  border: 1px solid var(--ml-border);
  background: rgba(255,255,255,.65);
  padding: 12px 16px;
  border-radius: 14px;
  font-weight: 900;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
  display:inline-flex;
  align-items:center;
  gap: 10px;
  backdrop-filter: blur(8px);
}
.nav-btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(2,6,23,.10);
  background: rgba(255,255,255,.85);
}
.nav-btn:active{
  transform: translateY(0px) scale(.99);
}
.nav-btn.primary{
  background: var(--ml-navy);
  color: #fff;
  border-color: transparent;
}
.nav-btn.secondary{
  color: var(--ml-navy);
}
.nav-btn:disabled{
  opacity: .55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Slightly nicer SVG color */
.nav-btn svg, .back-btn svg, .menu-btn svg{
  stroke: currentColor;
}

/* Safety for smaller widths (still desktop-first) */
@media (max-width: 920px){
  .ml-bg{ padding: 18px 12px 70px; }
  .progress-container{ padding: 12px; }
}

/* Audio play button styling */
.audio-play-btn,
.audio-option-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 10px 5px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: block;
    width: 100%;
    max-width: 400px;
}

.audio-play-btn:hover,
.audio-option-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.audio-play-btn:active,
.audio-option-btn:active {
    transform: translateY(0);
}

.audio-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
    align-items: center;
}

.next-lesson-btn {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.next-lesson-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.ai-note {
    margin-top: 15px;
    padding: 10px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    font-size: 14px;
    color: #667eea;
    text-align: center;
}

.next-action {
    margin-top: 30px;
    text-align: center;
}

/* Build result box styling */
.build-result-box {
    margin-top: 30px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 12px;
    border: 2px solid rgba(102, 126, 234, 0.3);
}

.build-result-box h4 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 18px;
}

.generated-phrases {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.generated-phrase {
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    font-size: 20px;
    font-weight: 600;
    color: #2d3748;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.generated-phrase:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.generated-phrase .audio-icon {
    font-size: 24px;
}

/* Context card image styling */
.context-image {
    margin: 20px 0;
    text-align: center;
    position: relative;
}

.context-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Fallback button for blocked autoplay */
.context-audio-fallback {
    margin-top: 20px;
    padding: 16px 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.context-audio-fallback:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.context-audio-fallback:active {
    transform: translateY(0);
}

/* Immersive Real-Life Card Styles */
.immersive-intro {
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 30px;
    padding: 15px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
}

.immersive-scenario {
    margin-bottom: 40px;
}

.immersive-scenario:last-child {
    margin-bottom: 0;
}

.immersive-scenario .scenario-title {
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 20px;
}

.immersive-image-container,
.immersive-media-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.immersive-image-container:hover,
.immersive-media-container:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.immersive-image,
.immersive-video {
    width: 100%;
    height: auto;
    display: block;
}

.immersive-video {
    background: #000;
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.immersive-image-container:hover .play-overlay,
.immersive-media-container:hover .play-overlay {
    opacity: 1;
}

.play-icon {
    font-size: 64px;
    color: white;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

/* TTS Result Styling */
.result-text-tts {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 12px;
    margin-top: 20px;
}

.generated-phrase-text {
    font-size: 24px;
    font-weight: 700;
    color: #2d3748;
}

.tts-speaker-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tts-speaker-btn:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.tts-speaker-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.tts-speaker-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ========================================
   INTRO CARD STYLES (L00_C01)
   ======================================== */

.learning-card.intro-card-wrapper {
    padding: 0 !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    overflow: visible !important;
    min-height: 600px;
}

.learning-card.intro-card-wrapper .intro-card {
    position: relative;
    min-height: 600px;
    width: 100%;
    background: transparent;
    border-radius: 0;
    overflow: visible;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Video-centered intro card */
.intro-card-video {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

.intro-video-centered {
    width: 60% !important;
    max-width: 650px !important;
    height: auto !important;
    border-radius: 16px !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5) !important;
    z-index: 1000 !important;
    position: relative !important;
}

/* Mobile responsive for intro card */
@media (max-width: 768px) {
    .learning-card.intro-card-wrapper {
        min-height: 500px;
    }
    
    .learning-card.intro-card-wrapper .intro-card {
        min-height: 500px;
    }
    
    .intro-video-centered {
        width: 90%;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .learning-card.intro-card-wrapper {
        min-height: 400px;
    }
    
    .learning-card.intro-card-wrapper .intro-card {
        min-height: 400px;
    }
    
    .intro-video-centered {
        width: 95%;
    }
}

/* ========================================
   LESSON COMPLETE CARD STYLES
   ======================================== */

.lesson-complete-card {
    position: relative;
    min-height: 500px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: var(--ml-r-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

.lesson-complete-overlay {
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-3xl) var(--spacing-2xl);
    border-radius: var(--ml-r-lg);
    box-shadow: var(--ml-shadow);
    max-width: 500px;
    width: 100%;
}

.lesson-complete-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--ml-navy);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.lesson-complete-message {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--ml-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.lesson-complete-status {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--ml-muted);
    margin-bottom: var(--spacing-xl);
}

.next-lesson-btn-large {
    background: linear-gradient(135deg, var(--ml-navy) 0%, var(--ml-soft) 100%);
    color: white;
    border: none;
    padding: 18px 36px;
    border-radius: 14px;
    font-size: var(--font-size-xl);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 16px rgba(30, 58, 95, 0.3);
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.next-lesson-btn-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30, 58, 95, 0.4);
}

.next-lesson-btn-large:active {
    transform: translateY(0);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .lesson-complete-card {
        min-height: 400px;
        padding: var(--spacing-lg);
    }
    
    .lesson-complete-overlay {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }
    
    .lesson-complete-title {
        font-size: var(--font-size-3xl);
    }
    
    .lesson-complete-status {
        font-size: var(--font-size-lg);
    }
    
    .next-lesson-btn-large {
        padding: 16px 28px;
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 480px) {
    .lesson-complete-card {
        min-height: 350px;
    }
    
    .lesson-complete-title {
        font-size: var(--font-size-2xl);
    }
    
    .next-lesson-btn-large {
        padding: 14px 24px;
        font-size: var(--font-size-base);
    }
}

/* ========================================
   DIALOGUE MODE CARD STYLES (L02_C07)
   ======================================== */

.dialogue-intro-banner {
    text-align: center;
    padding: 16px 20px;
    background: linear-gradient(135deg, rgba(125, 211, 252, 0.15) 0%, rgba(125, 211, 252, 0.05) 100%);
    border: 1px solid rgba(125, 211, 252, 0.3);
    border-radius: 12px;
    margin-bottom: 24px;
    font-size: 18px;
    font-weight: 600;
    color: #667eea;
}

.intro-audio-btn {
    margin-top: 10px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.intro-audio-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.dialogue-image-container {
    position: relative;
    max-width: 700px;
    margin: 0 auto 24px;
}

.dialogue-scene-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.dialogue-scene-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    background: #000;
}

/* Burbujas invisibles - solo áreas clickeables */
.speech-bubble-invisible {
    position: absolute;
    width: 80px;
    height: 80px;
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.3s ease;
    z-index: 10;
}

.speech-bubble-invisible:hover {
    background: rgba(125, 211, 252, 0.2);
    transform: scale(1.1);
}

.speech-bubble-invisible:active {
    transform: scale(0.95);
}

/* Posiciones de las burbujas invisibles */
.speech-bubble-invisible.bubble-1 {
    top: 15%;
    left: 10%;
}

.speech-bubble-invisible.bubble-2 {
    top: 15%;
    left: 50%;
    transform: translateX(-50%);
}

.speech-bubble-invisible.bubble-3 {
    top: 50%;
    left: 10%;
}

.speech-bubble-invisible.bubble-4 {
    top: 50%;
    right: 10%;
}

.play-all-btn {
    display: block;
    margin: 20px auto;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--ml-navy) 0%, var(--ml-soft) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(30, 58, 95, 0.2);
}

.play-all-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(30, 58, 95, 0.3);
}

.play-all-btn:active {
    transform: translateY(0);
}

/* Mobile responsive for dialogue mode */
@media (max-width: 768px) {
    .dialogue-intro-banner {
        font-size: 16px;
        padding: 14px 16px;
    }
    
    .speech-bubble-invisible {
        width: 60px;
        height: 60px;
    }
    
    /* Adjust positions for smaller screens */
    .speech-bubble-invisible.bubble-1 {
        top: 10%;
        left: 5%;
    }
    
    .speech-bubble-invisible.bubble-2 {
        top: 10%;
        left: 50%;
        transform: translateX(-50%);
    }
    
    .speech-bubble-invisible.bubble-3 {
        top: 45%;
        left: 5%;
    }
    
    .speech-bubble-invisible.bubble-4 {
        top: 45%;
        right: 5%;
    }
}

@media (max-width: 480px) {
    .speech-bubble-invisible {
        width: 50px;
        height: 50px;
    }
}


/* ========================================
   L00 EDUCATIONAL CARDS - RULE CARDS & CONTEXT CARDS
   ======================================== */

/* Concept Box */
.concept-box {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 2px solid #bae6fd;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.concept-main {
    text-align: center;
}

.concept-text {
    font-size: var(--font-size-lg);
    color: var(--color-navy);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.concept-emphasis {
    font-size: var(--font-size-xl);
    color: var(--color-maple-red);
    font-weight: 600;
    font-style: italic;
    margin-top: var(--spacing-md);
}

.concept-title {
    font-size: var(--font-size-xl);
    color: var(--color-navy);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

/* Context Card Structured Blocks */
.context-block {
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.context-block-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.context-block-icon {
    font-size: var(--font-size-lg);
}

.context-block-label {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.context-block-main {
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    margin: 0 0 var(--spacing-xs) 0;
}

.context-block-sub {
    font-size: var(--font-size-sm);
    margin: 0;
    opacity: 0.85;
}

/* Warning block */
.context-block-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 30%, #fef9c3 100%);
    border: 1.5px solid #f59e0b;
}

.context-block-warning .context-block-label {
    color: #92400e;
}

.context-block-warning .context-block-main {
    color: #78350f;
}

.context-block-warning .context-block-sub {
    color: #92400e;
}

/* Success block */
.context-block-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 30%, #ecfdf5 100%);
    border: 1.5px solid #10b981;
}

.context-block-success .context-block-label {
    color: #065f46;
}

.context-block-success .context-block-main {
    color: #064e3b;
}

.context-block-success .context-block-sub {
    color: #065f46;
}

/* Culture block */
.context-block-culture {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 30%, #fff1f2 100%);
    border: 1.5px solid #dc2626;
}

.context-block-culture .context-block-label {
    color: #991b1b;
}

.context-block-culture .context-block-main {
    color: #7f1d1d;
}

/* Key message */
.context-key-message {
    background: var(--color-navy);
    color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    margin-top: var(--spacing-md);
}

.context-key-message p {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.5;
}

.concept-explanation {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Explanation Section */
.explanation-section {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-base);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid var(--color-soft-blue);
}

.explanation-section p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Extended Explanation Section */
.extended-explanation-section {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 2px solid #f59e0b;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.audio-explanation-btn {
    background: var(--color-navy);
    color: white;
    border: none;
    border-radius: var(--radius-base);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-fast);
    width: 100%;
    justify-content: center;
}

.audio-explanation-btn:hover {
    background: var(--color-navy-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.audio-explanation-btn .audio-icon {
    font-size: var(--font-size-lg);
}

.extended-text {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-base);
    line-height: 1.8;
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

/* Mistake and Approach Sections */
.mistake-section,
.approach-section {
    background: #fef2f2;
    border: 2px solid #fecaca;
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.approach-section {
    background: #f0fdf4;
    border-color: #bbf7d0;
}

.mistake-section h4,
.approach-section h4 {
    color: var(--color-navy);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
}

.mistake-section p,
.approach-section p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

/* Key Message */
.key-message {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 2px solid #fbbf24;
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    text-align: center;
}

.key-message p {
    color: #92400e;
    font-size: var(--font-size-lg);
    line-height: 1.6;
}

/* Rule Examples */
.examples-section {
    margin: var(--spacing-xl) 0;
}

.rule-example {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.example-wrong,
.example-correct {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.example-wrong {
    background: #fef2f2;
}

.example-correct {
    background: #f0fdf4;
}

.wrong-icon,
.correct-icon {
    font-size: var(--font-size-xl);
}

.example-text {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text-primary);
}

.example-explanation {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-border);
}

/* Letter Examples (for accents) */
.letter-example {
    text-align: center;
    padding: var(--spacing-xl);
}

.letter-display {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-navy);
    font-family: 'Georgia', serif;
}

/* Comparison Row (for cedilla) */
.comparison-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.comparison-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.comparison-text {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-navy);
}

.comparison-sound {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-style: italic;
}

.comparison-arrow {
    font-size: var(--font-size-2xl);
    color: var(--color-soft-blue);
    font-weight: bold;
}

/* Simple Example */
.simple-example {
    text-align: center;
    padding: var(--spacing-lg);
}

.example-word {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-navy);
}

.example-pronunciation {
    font-size: var(--font-size-base);
    color: var(--color-text-tertiary);
    font-style: italic;
    margin: var(--spacing-xs) 0 var(--spacing-sm) 0;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .concept-text {
        font-size: var(--font-size-base);
    }
    
    .concept-emphasis {
        font-size: var(--font-size-lg);
    }
    
    .comparison-row {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
    }
    
    .letter-display {
        font-size: 2rem;
    }
}


/* ========================================
   AI FEEDBACK PRACTICE CARD STYLES
   ======================================== */

.ai-feedback-practice {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.scenario-box {
    background: linear-gradient(135deg, rgba(125, 211, 252, 0.15) 0%, rgba(125, 211, 252, 0.05) 100%);
    border: 2px solid rgba(125, 211, 252, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.scenario-box h4 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.scenario-box p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.vocabulary-hints {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.vocabulary-hints h4 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.hints-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.hint-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: white;
    border-radius: var(--radius-base);
    border: 1px solid var(--color-border-light);
}

.hint-en {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.hint-arrow {
    color: var(--color-soft-blue);
    font-weight: bold;
}

.hint-fr {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-navy);
}

.hint-pronunciation {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-style: italic;
}

.tips-box {
    background: linear-gradient(135deg, #fef3c7 0%, rgba(254, 243, 199, 0.3) 100%);
    border: 1px solid #fbbf24;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.tips-box h4 {
    color: #92400e;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.tips-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tips-box li {
    color: #92400e;
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.tips-box li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #f59e0b;
    font-weight: bold;
}

.input-section {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.input-section h4 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.ai-input {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-family: inherit;
    resize: vertical;
    transition: border-color var(--transition-fast);
}

.ai-input:focus {
    outline: none;
    border-color: var(--color-soft-blue);
}

.ai-input:disabled {
    background: var(--color-background);
    cursor: not-allowed;
}

.character-count {
    text-align: right;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.submit-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-soft-blue) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.submit-btn:active:not(:disabled) {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.feedback-section {
    background: linear-gradient(135deg, #f0fdf4 0%, rgba(240, 253, 244, 0.3) 100%);
    border: 2px solid #86efac;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    animation: slideIn 0.3s ease-out;
}

.feedback-section h4 {
    color: #166534;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.feedback-text {
    color: #166534;
    font-size: var(--font-size-base);
    line-height: 1.6;
    white-space: pre-wrap;
}

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

/* Mobile responsive */
@media (max-width: 768px) {
    .hints-grid {
        grid-template-columns: 1fr;
    }
    
    .ai-input {
        min-height: 80px;
    }
    
    .input-section,
    .feedback-section {
        padding: var(--spacing-lg);
    }
}

/* ========================================
   Test Results Card
   ======================================== */

.test-results-card {
    min-height: 100vh;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.test-results-overlay {
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 800px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.test-results-title {
    font-size: var(--font-size-3xl);
    color: var(--color-navy);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.score-display {
    text-align: center;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2xl);
}

.score-display.excellent {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.score-display.good {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.score-display.passing {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.score-display.needs-improvement {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.score-circle {
    background: white;
    border-radius: 50%;
    width: 180px;
    height: 180px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.score-percentage {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-navy);
    line-height: 1;
}

.score-fraction {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.score-feedback {
    color: white;
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin: 0;
}

.test-details {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.test-details h3 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
}

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

.answer-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-base);
    background: white;
}

.answer-item.correct {
    border-left: 4px solid #10b981;
}

.answer-item.incorrect {
    border-left: 4px solid #ef4444;
}

.answer-number {
    font-weight: 600;
    color: var(--color-text-secondary);
    min-width: 30px;
}

.answer-icon {
    font-size: var(--font-size-xl);
}

.answer-item.correct .answer-icon {
    color: #10b981;
}

.answer-item.incorrect .answer-icon {
    color: #ef4444;
}

.answer-text {
    flex: 1;
    color: var(--color-text-primary);
}

.improvement-tips {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 2px solid #f59e0b;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.improvement-tips h3 {
    color: var(--color-navy);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.improvement-tips p {
    color: var(--color-text-primary);
    line-height: 1.6;
    margin: 0;
}

.cta-section {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.cta-message {
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.early-access-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
    transition: all var(--transition-base);
}

.early-access-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.5);
}

.early-access-btn .btn-icon {
    font-size: var(--font-size-2xl);
}

@media (max-width: 768px) {
    .test-results-overlay {
        padding: var(--spacing-xl);
    }
    
    .test-results-title {
        font-size: var(--font-size-2xl);
    }
    
    .score-circle {
        width: 150px;
        height: 150px;
    }
    
    .score-percentage {
        font-size: 2.5rem;
    }
    
    .early-access-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   Test Introduction Card
   ======================================== */

.test-intro-card {
    min-height: 100vh;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.test-intro-overlay {
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 700px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.test-intro-title {
    font-size: var(--font-size-3xl);
    color: var(--color-navy);
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.test-intro-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    font-weight: 500;
}

.test-intro-content {
    margin-bottom: var(--spacing-2xl);
}

.test-instruction {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.test-details-box {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.test-detail-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

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

.detail-icon {
    font-size: var(--font-size-2xl);
    min-width: 40px;
    text-align: center;
}

.detail-text {
    flex: 1;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.detail-text strong {
    color: var(--color-navy);
    font-weight: 600;
}

.test-motivation {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    text-align: center;
    line-height: 1.6;
    font-style: italic;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border-radius: var(--radius-base);
}

.test-intro-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.test-intro-btn {
    width: 100%;
    max-width: 400px;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-lg);
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-block;
}

.test-intro-btn.primary {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.4);
}

.test-intro-btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(16, 185, 129, 0.5);
}

.test-intro-btn.secondary {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.test-intro-btn.secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.5);
}

.test-intro-btn.tertiary {
    background: white;
    color: var(--color-navy);
    border: 2px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.test-intro-btn.tertiary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-color: var(--color-navy);
}

/* ========================================
   Test Timer
   ======================================== */

.test-timer {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xl);
    font-weight: 700;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: pulse 2s ease-in-out infinite;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .test-intro-overlay,
    .test-results-overlay {
        padding: var(--spacing-xl);
    }
    
    .test-intro-title,
    .test-results-title {
        font-size: var(--font-size-2xl);
    }
    
    .score-circle {
        width: 150px;
        height: 150px;
    }
    
    .score-percentage {
        font-size: 2.5rem;
    }
    
    .test-timer {
        top: 10px;
        right: 10px;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-base);
    }
}

/* ========================================
   Audio Listening Practice Cards
   ======================================== */

.audio-listening-section {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.audio-play-btn-large {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border: none;
    padding: var(--spacing-xl) var(--spacing-2xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xl);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.audio-play-btn-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.5);
}

.audio-play-btn-large:active {
    transform: translateY(-1px);
}

.audio-play-btn-large .audio-icon {
    font-size: var(--font-size-2xl);
}

.listening-hint {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-style: italic;
    margin: 0;
}

.question-section {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border-radius: var(--radius-base);
    border-left: 4px solid var(--color-primary);
}

.listening-question {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-navy);
    margin: 0;
}

/* Responsive adjustments for audio listening */
@media (max-width: 768px) {
    .audio-play-btn-large {
        padding: var(--spacing-lg) var(--spacing-xl);
        font-size: var(--font-size-lg);
    }
    
    .audio-listening-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }
}

/* ========================================
   Extended Dialogue Format (L10_C07)
   ======================================== */

.scenario-section-extended {
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.scenario-section-extended:last-of-type {
    margin-bottom: var(--spacing-xl);
}

.scenario-context-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.scenario-context-image {
    width: 100%;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.scenario-context-image img {
    width: 100%;
    height: auto;
    display: block;
}

.scenario-context-image.image-missing {
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scenario-context-image.image-missing::before {
    content: '🖼️';
    font-size: 4rem;
    opacity: 0.3;
}

/* Scenario Context Video - Same styling as images */
.scenario-context-video {
    width: 100%;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.scenario-context-video .scenario-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
}

.dialogue-header-section {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-lg);
}

.dialogue-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
}

.dialogue-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.play-conversation-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.play-conversation-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
}

.play-conversation-btn .play-icon {
    font-size: var(--font-size-lg);
}

.dialogue-container-extended {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.dialogue-line-extended {
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-base);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-base);
}

.dialogue-line-extended:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
    transform: translateX(4px);
}

.dialogue-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.speaker-name {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dialogue-text-wrapper {
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-base);
}

.dialogue-text-wrapper:hover {
    background: var(--color-surface);
}

.dialogue-text-french {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-navy);
    margin: 0 0 var(--spacing-xs) 0;
    line-height: 1.5;
}

.dialogue-text-translation {
    font-size: var(--font-size-sm);
    font-style: italic;
    color: #6b7280;
    margin: 0;
    line-height: 1.4;
}

.audio-pending {
    display: inline-block;
    font-size: var(--font-size-xs);
    color: #9ca3af;
    font-style: italic;
    margin-top: var(--spacing-xs);
    padding: 2px 8px;
    background: #f3f4f6;
    border-radius: var(--radius-sm);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .scenario-section-extended {
        padding: var(--spacing-md);
    }
    
    .scenario-context-image {
        margin-bottom: var(--spacing-md);
    }
    
    .scenario-context-image.image-missing {
        min-height: 200px;
    }
    
    .dialogue-line-extended {
        padding: var(--spacing-md);
    }
    
    .play-conversation-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
}


/* ========================================
   USER INFO & LOGOUT (Header Right)
   ======================================== */

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(30, 58, 95, 0.05);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
}

.user-email {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: 500;
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.logout-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
    padding: 0;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.logout-btn svg {
    width: 18px;
    height: 18px;
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .user-email {
        max-width: 100px;
        font-size: 11px;
    }
    
    .user-info {
        padding: 4px 8px;
    }
    
    .logout-btn {
        width: 28px;
        height: 28px;
    }
}