/* Modern Thai Learning App - Redesigned Stylesheet */

/* Alphabet Module Scoped Styles */
.alphabet-app button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-base);
}

/* Container */
.alphabet-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-3xl);
}

/* Hero Section */
.alphabet-hero-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-top: var(--spacing-lg);
}

.alphabet-hero-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--neutral-800);
    margin-bottom: var(--spacing-lg);
}

.alphabet-hero-start-btn {
    padding: 16px 52px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%) !important;
    color: white !important;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 22px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.alphabet-hero-start-btn:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.alphabet-hero-start-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

/* Mode Selector - Compact Segmented Control */
.alphabet-mode-selector {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.alphabet-mode-tabs {
    display: inline-flex;
    gap: 4px;
    background: var(--neutral-100);
    padding: 4px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
}

.alphabet-tab-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 20px;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--neutral-600);
    font-weight: 500;
    transition: all var(--transition-base);
}

.alphabet-tab-btn:hover {
    color: var(--neutral-800);
    background: rgba(0, 0, 0, 0.04);
}

.alphabet-tab-btn.active {
    background: white;
    color: var(--primary-600);
    box-shadow: var(--shadow-md);
}

.alphabet-tab-icon {
    font-size: 20px;
}

.alphabet-tab-label {
    font-size: 14px;
    font-weight: 600;
}

.alphabet-tab-count {
    font-size: 11px;
    opacity: 0.6;
    background: var(--neutral-200);
    padding: 1px 6px;
    border-radius: var(--radius-full);
}

.alphabet-tab-btn.active .alphabet-tab-count {
    background: var(--primary-100);
    color: var(--primary-700);
}

.alphabet-selection-info {
    color: var(--neutral-500);
    font-weight: 600;
    font-size: 13px;
}

/* Grid Section */
.alphabet-grid-section {
    margin-bottom: var(--spacing-lg);
    display: none; /* Hidden by default, shown in custom mode */
}

.alphabet-grid-section.visible {
    display: block;
}

.alphabet-grid-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.alphabet-section-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--neutral-800);
}

.alphabet-progress-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alphabet-progress-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
}

.alphabet-badge-bar {
    width: 32px;
    height: 12px;
    background: linear-gradient(90deg, var(--secondary-200) 0%, var(--secondary-500) 100%);
    border-radius: var(--radius-full);
}

.alphabet-badge-label {
    font-size: 13px;
    color: var(--neutral-600);
    font-weight: 500;
}

/* Character Grid */
.alphabet-character-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 5px;
    background: white;
    padding: 10px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.alphabet-char-tile {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1px;
    font-size: 35px;
    font-weight: 500;
    background: var(--neutral-50);
    border: 2px solid var(--neutral-200);
    border-radius: 5px;
    cursor: pointer;
    user-select: none;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.alphabet-char-tile::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--progress, 0%);
    background: linear-gradient(180deg, rgba(237, 184, 48, 0.2) 0%, rgba(237, 184, 48, 0.4) 100%);
    z-index: 0;
    transition: height var(--transition-slow);
}

.alphabet-char-tile span {
    position: relative;
    z-index: 1;
}

.alphabet-char-tile:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.alphabet-char-tile.selected {
    background: var(--primary-500);
    border-color: var(--primary-600);
    color: white;
    box-shadow: var(--shadow-lg);
}

.alphabet-char-tile.selected::before {
    background: rgba(255, 255, 255, 0.2);
}

/* Progress Bar in Practice Area */
.alphabet-practice-progress {
    margin-bottom: var(--spacing-xl);
}

.alphabet-progress-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--neutral-700);
    margin-bottom: var(--spacing-sm);
}

.alphabet-progress-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.alphabet-progress-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--neutral-500);
}

.alphabet-progress-pct {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary-600);
}

.alphabet-progress-track {
    width: 100%;
    height: 10px;
    background: var(--neutral-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.alphabet-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-400) 0%, var(--primary-500) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    min-width: 0;
}

/* Expandable Section */
.alphabet-expandable-section {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

.alphabet-expand-toggle {
    background: none;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-600);
    font-size: 14px;
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-base);
}

.alphabet-expand-toggle:hover {
    color: var(--primary-700);
}

.alphabet-expand-label {
    text-decoration: underline;
    text-underline-offset: 2px;
}

.alphabet-expand-arrow {
    font-size: 12px;
}

.alphabet-expand-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
    margin-top: var(--spacing-lg);
}

.alphabet-expandable-section.active .alphabet-expand-content {
    max-height: 600px;
}

.alphabet-expand-hint {
    font-size: 13px;
    color: var(--neutral-500);
    margin-bottom: var(--spacing-md);
}

.alphabet-expand-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.alphabet-selection-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--neutral-100);
    border-radius: var(--radius-md);
}

.alphabet-selection-bar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alphabet-btn-bar {
    background: none;
    border: none;
    color: var(--primary-600);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    padding: 2px 4px;
}

.alphabet-btn-bar:hover {
    color: var(--primary-700);
    text-decoration: underline;
}

.alphabet-bar-divider {
    color: var(--neutral-300);
    font-size: 13px;
}

.alphabet-btn-action {
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.alphabet-btn-learning {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%) !important;
    color: white !important;
}

.alphabet-btn-learning:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.alphabet-btn-writing {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%) !important;
    color: white !important;
}

.alphabet-btn-writing:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}


/* Practice Area */
.alphabet-practice-area {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alphabet-practice-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.alphabet-btn-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neutral-100);
    border-radius: var(--radius-full);
    color: var(--neutral-600);
}

.alphabet-btn-close:hover {
    background: var(--error);
    color: white;
    transform: scale(1.1);
}

.alphabet-practice-score {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-600);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-50);
    border-radius: var(--radius-full);
}

.alphabet-practice-prompt {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.alphabet-app .alphabet-speaker-btn {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%) !important;
    color: white;
    border-radius: var(--radius-full);
    font-size: 36px;
    box-shadow: var(--shadow-lg);
    flex-shrink: 0;
}

.alphabet-app .alphabet-speaker-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.alphabet-practice-info {
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.alphabet-info-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--neutral-800);
    margin-bottom: var(--spacing-xs);
}

.alphabet-info-subtitle {
    font-size: 15px;
    color: var(--neutral-600);
    margin-bottom: var(--spacing-xs);
}

.alphabet-info-details {
    font-size: 13px;
    color: var(--neutral-500);
}

.alphabet-practice-feedback {
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.alphabet-feedback-instruction {
    font-size: 18px;
    font-weight: 600;
    color: var(--neutral-400);
}

.alphabet-feedback-correct {
    font-size: 32px;
    font-weight: 700;
    color: var(--success);
    animation: bounce 0.5s ease;
}

.alphabet-feedback-incorrect {
    font-size: 32px;
    font-weight: 700;
    color: var(--error);
    animation: bounce 0.5s ease;
}

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

/* Choice Tiles */
.alphabet-practice-choices {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
}

.alphabet-choice-tile {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 500;
    background: var(--neutral-50);
    border: 3px solid var(--neutral-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-base);
}

.alphabet-choice-tile:hover {
    border-color: var(--primary-300);
    background: var(--primary-50);
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.alphabet-choice-tile.correct {
    border-color: var(--success);
    background: #d1fae5;
    transform: scale(1.05);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.3);
    pointer-events: none;
}

.alphabet-choice-tile.correct-highlight {
    transform: scale(1.15);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.5), 0 8px 20px rgba(16, 185, 129, 0.3);
    animation: pulseCorrect 0.8s ease infinite;
    z-index: 2;
    position: relative;
}

@keyframes pulseCorrect {
    0%, 100% { box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.5), 0 8px 20px rgba(16, 185, 129, 0.3); }
    50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0.3), 0 8px 25px rgba(16, 185, 129, 0.4); }
}

.alphabet-choice-tile.incorrect {
    border-color: var(--error);
    background: #fee2e2;
    animation: shake 0.4s ease;
    pointer-events: none;
}

.alphabet-choice-tile.disabled {
    pointer-events: none;
    opacity: 0.6;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

/* Progress-based tile colors - kept minimal, progress bar only */

/* Write mode tiles in practice */
.alphabet-write-tile {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 500;
    background: var(--neutral-100);
    border-radius: var(--radius-md);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    background-size: 90%;
    background-position: center;
    background-repeat: no-repeat;
    transition: all var(--transition-base);
}

.alphabet-write-tile:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

/* Modal */
.alphabet-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.alphabet-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.alphabet-modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlide 0.3s ease-out;
}

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

.alphabet-modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neutral-100);
    border-radius: var(--radius-full);
    color: var(--neutral-600);
    z-index: 10;
}

.alphabet-modal-close:hover {
    background: var(--error);
    color: white;
    transform: scale(1.1);
}

/* Draw Modal */
.alphabet-draw-content {
    width: 100%;
    max-width: 600px;
    padding: var(--spacing-xl);
}

.alphabet-draw-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.alphabet-draw-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--neutral-800);
    margin-bottom: var(--spacing-md);
}

.alphabet-draw-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.alphabet-phonetic-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-600);
}

.alphabet-pronunciation-text {
    font-size: 16px;
    color: var(--neutral-600);
}

.alphabet-draw-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.alphabet-tool-btn,
.alphabet-guide-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border: 2px solid var(--neutral-200);
    border-radius: var(--radius-md);
    color: var(--neutral-700);
    font-weight: 500;
    font-size: 14px;
    box-shadow: var(--shadow-sm);
}

.alphabet-tool-btn:hover,
.alphabet-guide-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-400);
    color: var(--primary-600);
    transform: translateY(-1px);
}

.alphabet-tool-divider {
    width: 1px;
    height: 24px;
    background: var(--neutral-300);
}

.alphabet-canvas-wrapper {
    position: relative;
    background: white;
    border: 3px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

#alphabet-draw-canvas {
    display: block;
    width: 100%;
    height: auto;
    cursor: crosshair;
    touch-action: none;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

/* Draw Navigation */
.alphabet-draw-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--neutral-200);
}

.alphabet-draw-nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 8px 16px;
    background: white;
    border: 2px solid var(--neutral-200);
    border-radius: var(--radius-md);
    color: var(--neutral-700);
    font-weight: 600;
    font-size: 14px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.alphabet-draw-nav-btn:hover {
    border-color: var(--primary-400);
    color: var(--primary-600);
    background: var(--primary-50);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.alphabet-draw-nav-counter {
    font-size: 13px;
    font-weight: 600;
    color: var(--neutral-500);
}


/* Complete Modal */
.alphabet-complete-content {
    width: 100%;
    max-width: 500px;
    padding: var(--spacing-2xl);
    text-align: center;
}

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

.alphabet-complete-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
}

.alphabet-complete-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--neutral-800);
    margin-bottom: var(--spacing-sm);
}

.alphabet-complete-header p {
    font-size: 16px;
    color: var(--neutral-600);
}

.alphabet-score-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.alphabet-summary-stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-lg);
    background: var(--primary-50);
    border-radius: var(--radius-lg);
}

.alphabet-stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-600);
}

.alphabet-stat-label {
    font-size: 14px;
    color: var(--neutral-600);
    font-weight: 500;
}

.alphabet-score-details {
    max-height: 300px;
    overflow-y: auto;
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.alphabet-score-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.alphabet-score-char {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-600);
}

.alphabet-score-bar-track {
    flex: 1;
    height: 8px;
    background: var(--neutral-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.alphabet-score-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-400) 0%, var(--primary-500) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.alphabet-score-points {
    font-size: 14px;
    font-weight: 600;
    color: var(--neutral-600);
    min-width: 50px;
    text-align: right;
}

.alphabet-btn-primary {
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%) !important;
    color: white !important;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 16px;
    box-shadow: var(--shadow-md);
}

.alphabet-btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.alphabet-btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 18px;
}

.alphabet-btn-exit {
    display: block;
    margin: var(--spacing-md) auto 0;
    background: none;
    border: none;
    color: var(--neutral-400);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
}

.alphabet-btn-exit:hover {
    color: var(--neutral-600);
    text-decoration: underline;
}

/* Daily Threshold Pause Modal */
.alphabet-pause-content {
    width: 100%;
    max-width: 420px;
    padding: var(--spacing-2xl);
    text-align: center;
}

.alphabet-pause-icon {
    font-size: 52px;
    margin-bottom: var(--spacing-md);
}

.alphabet-pause-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--neutral-800);
    margin-bottom: var(--spacing-sm);
}

.alphabet-pause-message {
    font-size: 16px;
    color: var(--neutral-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-2xl);
}

/* Introduction Card */
.alphabet-intro-card {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-2xl);
    animation: introFadeIn 0.35s ease-out;
}

@keyframes introFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.alphabet-intro-label {
    display: inline-block;
    padding: 4px 14px;
    background: var(--secondary-100);
    color: var(--secondary-700);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-lg);
}

.alphabet-intro-char-display {
    font-size: 130px;
    line-height: 1.1;
    color: var(--neutral-800);
    margin-bottom: var(--spacing-xl);
    animation: charReveal 0.45s ease-out;
}

@keyframes charReveal {
    from { opacity: 0; transform: scale(0.8); }
    to   { opacity: 1; transform: scale(1); }
}

.alphabet-intro-phonetic {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary-600);
    margin-bottom: var(--spacing-sm);
}

.alphabet-intro-example {
    font-size: 17px;
    color: var(--neutral-600);
    margin-bottom: var(--spacing-2xl);
}

.alphabet-intro-continue-btn {
    padding: 15px 52px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%) !important;
    color: white !important;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.alphabet-intro-continue-btn:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.alphabet-intro-continue-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

/* Hero test link */
.alphabet-hero-test-link {
    margin-top: var(--spacing-md);
}

.alphabet-text-link {
    background: none;
    border: none;
    color: var(--neutral-500);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: color var(--transition-base);
}

.alphabet-text-link:hover {
    color: var(--primary-600);
    text-decoration: underline;
}

/* Placement prompt */
.alphabet-placement-prompt {
    text-align: center;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background: var(--primary-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--primary-200);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.alphabet-placement-prompt p {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-700);
    margin-bottom: var(--spacing-md);
}

/* Test mode styling */
.alphabet-test-title {
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    color: var(--secondary-700);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--secondary-100);
    border-radius: var(--radius-md);
}

.alphabet-practice-area.alphabet-test-mode {
    border: 2px solid var(--secondary-400);
}

.alphabet-practice-area.alphabet-test-mode .alphabet-practice-score {
    background: var(--secondary-100);
    color: var(--secondary-700);
    font-size: 16px;
}

.alphabet-test-skip {
    display: block;
    margin: var(--spacing-lg) auto 0;
    padding: var(--spacing-sm) var(--spacing-xl);
    background: none;
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-md);
    color: var(--neutral-500);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.alphabet-test-skip:hover {
    border-color: var(--neutral-400);
    color: var(--neutral-700);
    background: var(--neutral-50);
}

/* Intro card sound button */
.alphabet-intro-sound-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%) !important;
    border: none;
    border-radius: var(--radius-full);
    font-size: 28px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.alphabet-intro-sound-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

/* Pause modal switch button */
.alphabet-btn-switch {
    display: block;
    margin: var(--spacing-md) auto 0;
    background: linear-gradient(135deg, var(--secondary-500) 0%, var(--secondary-600) 100%) !important;
}

.alphabet-btn-switch:hover {
    background: linear-gradient(135deg, var(--secondary-600) 0%, var(--secondary-700) 100%) !important;
}

/* Utilities */
.alphabet-hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .alphabet-practice-choices {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }

    .alphabet-choice-tile {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .alphabet-container {
        padding: 0 var(--spacing-md) var(--spacing-xl);
    }

    .alphabet-hero-title {
        font-size: 22px;
    }

    .alphabet-btn-action {
        padding: 8px 14px;
        font-size: 14px;
    }
}