/* ================================
   Word Quest - Desktop-First UI
   Responsive for tablet/mobile
   ================================ */

/* CSS Variables */
:root {
    /* Colors */
    --bg-main: #f0f4f8;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --bg-subtle: #e2e8f0;
    
    /* Primary */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-bg: #eef2ff;
    
    /* Secondary */
    --secondary: #14b8a6;
    --secondary-bg: #f0fdfa;
    
    /* Status */
    --success: #22c55e;
    --success-bg: #f0fdf4;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    
    /* Text */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;
    
    /* Borders */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    
    /* Level Colors */
    --level-1: #22c55e;
    --level-1-bg: #dcfce7;
    --level-2: #f59e0b;
    --level-2-bg: #fef3c7;
    --level-3: #ef4444;
    --level-3-bg: #fee2e2;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    
    /* Fonts */
    --font-display: 'Fredoka', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* Background Pattern */
.bg-pattern {
    position: fixed;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(20, 184, 166, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(245, 158, 11, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ================================
   FLOATING SIDE BUTTONS
   ================================ */
.side-buttons {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 100;
}

.side-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    position: relative;
}

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

.side-btn:hover .side-btn-label {
    opacity: 1;
    transform: translateX(-10px);
}

.side-btn-icon {
    font-size: 1.5rem;
}

.side-btn-label {
    position: absolute;
    right: 70px;
    background: var(--text-primary);
    color: var(--text-inverse);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(0);
    transition: all 0.3s ease;
    pointer-events: none;
}

.side-btn-label::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--text-primary);
}

/* ================================
   APP CONTAINER
   ================================ */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg);
    padding-right: 100px; /* Space for side buttons */
}

/* ================================
   HEADER
   ================================ */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-xl);
}

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

.brand-icon {
    font-size: 2rem;
}

.brand-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--primary);
    font-weight: 700;
}

.brand-tagline {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-left: var(--space-md);
    border-left: 2px solid var(--border-light);
}

.header-stats {
    display: flex;
    gap: var(--space-md);
}

.stat-badge {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-subtle);
    border-radius: var(--radius-full);
}

.badge-icon {
    font-size: 1rem;
}

.badge-value {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.badge-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.xp-badge { background: var(--primary-bg); }
.streak-badge { background: var(--warning-bg); }
.mastered-badge { background: var(--success-bg); }

/* ================================
   VIEWS
   ================================ */
.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* ================================
   DASHBOARD LAYOUT
   ================================ */
.dashboard-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: var(--space-xl);
}

.dashboard-left {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.dashboard-right {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.card-header h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--text-primary);
}

/* Progress Card */
.progress-card {
    text-align: center;
}

.progress-display {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto var(--space-lg);
}

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

.progress-ring-bg {
    fill: none;
    stroke: var(--bg-subtle);
    stroke-width: 8;
}

.progress-ring-fill {
    fill: none;
    stroke: var(--primary);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 326.7;
    stroke-dashoffset: 326.7;
    transition: stroke-dashoffset 1s ease;
}

.progress-center {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.progress-percent {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.progress-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.progress-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    margin-bottom: var(--space-md);
}

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

.ps-value {
    display: block;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.ps-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.progress-divider {
    width: 1px;
    background: var(--border-light);
}

/* Milestone Track */
.milestone-track {
    margin-top: var(--space-md);
}

.milestone-bar {
    height: 8px;
    background: var(--bg-subtle);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

.milestone-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--level-1), var(--level-2), var(--level-3));
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
    width: 0%;
}

.milestone-markers {
    display: flex;
    justify-content: space-between;
    padding: 0 var(--space-xs);
}

.marker {
    text-align: center;
    font-size: 1rem;
    opacity: 0.5;
    transition: opacity 0.3s;
}

.marker.reached {
    opacity: 1;
}

/* Collection Card */
.collection-card {
    cursor: pointer;
    transition: all 0.3s ease;
}

.collection-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.collection-card .card-header {
    border-bottom: 1px solid var(--border-light);
    padding-bottom: var(--space-md);
}

.collection-count {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.collection-preview {
    min-height: 80px;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding-top: var(--space-md);
}

.empty-collection {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    width: 100%;
}

.collection-item-preview {
    width: 40px;
    height: 40px;
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.card-action {
    display: block;
    text-align: right;
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 500;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-light);
    margin-top: var(--space-sm);
}

/* Start Learning Card */
.start-learning-card .card-header {
    margin-bottom: var(--space-sm);
}

.start-learning-card .card-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.xp-reminder {
    background: var(--warning-bg);
    color: var(--text-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    margin-bottom: var(--space-lg);
    border-left: 3px solid var(--warning);
}

.level-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.level-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.level-btn:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.level-btn:hover .level-arrow {
    opacity: 1;
    transform: translateX(5px);
}

.level-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.level-1 .level-icon { background: var(--level-1-bg); }
.level-2 .level-icon { background: var(--level-2-bg); }
.level-3 .level-icon { background: var(--level-3-bg); }

.level-info {
    flex: 1;
    text-align: left;
}

.level-name {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.level-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.level-mastered {
    display: block;
    font-size: 0.75rem;
    color: var(--success);
    font-weight: 600;
}

.level-arrow {
    font-size: 1.25rem;
    color: var(--primary);
    opacity: 0.3;
    transition: all 0.3s ease;
}

.level-1:hover { border-color: var(--level-1); }
.level-2:hover { border-color: var(--level-2); }
.level-3:hover { border-color: var(--level-3); }

/* Analogy Test Button */
.analogy-test-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    margin-top: var(--space-lg);
    background: linear-gradient(135deg, #667eea15, #764ba215);
    border: 2px dashed var(--primary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.analogy-test-btn:hover {
    background: linear-gradient(135deg, #667eea25, #764ba225);
    border-style: solid;
    transform: translateX(5px);
}

.analogy-test-btn.unlocked {
    background: linear-gradient(135deg, var(--primary-bg), #764ba220);
    border-style: solid;
    border-color: var(--primary);
}

.analogy-btn-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    border-radius: var(--radius-md);
}

.analogy-btn-info {
    flex: 1;
    text-align: left;
}

.analogy-btn-title {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.analogy-btn-desc {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.analogy-btn-lock {
    display: block;
    font-size: 0.75rem;
    color: var(--warning);
    font-weight: 500;
    margin-top: 2px;
}

.analogy-test-btn.unlocked .analogy-btn-lock {
    color: var(--success);
}

.analogy-test-btn.at-limit {
    border-color: var(--warning);
    background: var(--warning-bg);
}

.analogy-test-btn.at-limit .analogy-btn-lock {
    color: var(--warning);
}

.analogy-btn-arrow {
    font-size: 1.25rem;
    color: var(--primary);
    opacity: 0.3;
    transition: all 0.3s ease;
}

.analogy-test-btn:hover .analogy-btn-arrow {
    opacity: 1;
    transform: translateX(5px);
}

/* Tip Card */
.tip-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--warning-bg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--warning);
}

.tip-icon {
    font-size: 1.5rem;
}

.tip-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ================================
   LEARN SCREEN
   ================================ */
.learn-layout {
    max-width: 700px;
    margin: 0 auto;
}

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

.back-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.back-btn:hover {
    background: var(--bg-subtle);
    color: var(--text-primary);
}

.session-info {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.session-progress {
    font-weight: 600;
    color: var(--text-primary);
}

.session-xp-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Flashcard */
.flashcard-container {
    perspective: 1000px;
    margin-bottom: var(--space-xl);
}

.flashcard {
    width: 100%;
    min-height: 350px;
    cursor: pointer;
    transform-style: preserve-3d;
    transition: transform 0.6s ease;
}

.flashcard.flipped {
    transform: rotateY(180deg);
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

.flashcard-front,
.flashcard-back {
    position: absolute;
    width: 100%;
    min-height: 350px;
    backface-visibility: hidden;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.flashcard-back {
    transform: rotateY(180deg);
}

.word-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.word-text {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--primary);
    font-weight: 700;
}

.audio-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--primary-bg);
    color: var(--primary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.audio-btn:hover {
    background: var(--primary);
    color: white;
}

.flashcard-hint {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.definition-section {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.definition-simple {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.definition-formal {
    font-size: 1rem;
    color: var(--text-secondary);
    font-style: italic;
}

.word-details {
    background: var(--bg-subtle);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.detail-row {
    margin-bottom: var(--space-sm);
}

.detail-row:last-child {
    margin-bottom: 0;
}

.detail-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.detail-value {
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Learn Actions */
.learn-actions {
    display: flex;
    gap: var(--space-md);
}

.learn-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.learn-btn.need-practice {
    background: var(--bg-subtle);
    color: var(--text-secondary);
}

.learn-btn.need-practice:hover {
    background: var(--border-medium);
}

.learn-btn.got-it {
    background: var(--success);
    color: white;
}

.learn-btn.got-it:hover {
    background: #16a34a;
}

.btn-icon {
    font-size: 1.25rem;
}

/* ================================
   QUIZ SCREEN
   ================================ */
.quiz-layout {
    max-width: 700px;
    margin: 0 auto;
}

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

.quiz-progress-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-subtle);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.quiz-progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.quiz-score {
    font-weight: 600;
    color: var(--text-primary);
}

.quiz-content {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
}

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

.question-type-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.quiz-word {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--primary);
}

.cloze-sentence {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.cloze-blank {
    display: inline-block;
    min-width: 100px;
    border-bottom: 3px solid var(--primary);
    margin: 0 var(--space-xs);
}

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

.answer-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-subtle);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.answer-btn:hover:not(:disabled) {
    background: var(--bg-card);
    border-color: var(--primary);
}

.answer-btn:disabled {
    cursor: default;
}

.answer-btn.correct {
    background: var(--success-bg);
    border-color: var(--success);
}

.answer-btn.incorrect {
    background: var(--danger-bg);
    border-color: var(--danger);
}

.answer-letter {
    width: 32px;
    height: 32px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text-secondary);
}

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

.cloze-answer {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    max-width: 500px;
    margin: 0 auto;
}

.cloze-input {
    flex: 1;
    padding: var(--space-md);
    font-size: 1.25rem;
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-md);
    text-align: center;
    transition: border-color 0.2s;
}

.cloze-input:focus {
    outline: none;
    border-color: var(--primary);
}

.cloze-submit-btn {
    padding: var(--space-md) var(--space-lg);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.cloze-submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ================================
   ANALOGY TEST
   ================================ */
.analogy-layout {
    max-width: 800px;
    margin: 0 auto;
}

.analogy-header {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    padding: var(--space-md);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.analogy-progress-bar {
    flex: 1;
    height: 10px;
    background: var(--bg-subtle);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.analogy-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.analogy-info {
    font-weight: 600;
    color: var(--text-secondary);
}

.analogy-score {
    font-size: 0.9rem;
}

.analogy-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
}

.analogy-number {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.analogy-stem {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background: linear-gradient(135deg, var(--primary-bg), var(--bg-subtle));
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary);
}

.stem-highlight {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.analogy-option {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.analogy-option:hover:not(:disabled) {
    border-color: var(--primary);
    background: var(--primary-bg);
    transform: translateX(5px);
}

.analogy-option:disabled {
    cursor: not-allowed;
}

.analogy-option.correct {
    border-color: var(--success);
    background: var(--success-bg);
}

.analogy-option.incorrect {
    border-color: var(--error);
    background: var(--error-bg);
}

.option-letter {
    font-weight: 700;
    color: var(--primary);
    min-width: 30px;
}

.option-text {
    font-size: 1rem;
    color: var(--text-primary);
}

.analogy-option.correct .option-letter,
.analogy-option.correct .option-text {
    color: var(--success);
}

.analogy-option.incorrect .option-letter,
.analogy-option.incorrect .option-text {
    color: var(--error);
}

/* ================================
   RESULTS SCREEN
   ================================ */
.results-layout {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.results-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 500px;
    width: 100%;
}

.results-header {
    margin-bottom: var(--space-xl);
}

.results-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--space-md);
}

.results-title {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--text-primary);
}

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

.result-stat {
    padding: var(--space-md);
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
    min-width: 100px;
}

.result-value {
    display: block;
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--primary);
}

.result-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.xp-note {
    display: block;
    font-size: 0.7rem;
    color: var(--warning);
    margin-top: 4px;
    font-weight: 500;
}

.words-review {
    margin-bottom: var(--space-xl);
}

.words-review h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.review-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.review-word {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--danger-bg);
    border: 1px solid var(--danger);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--danger);
}

.results-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.btn {
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

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

.btn-secondary {
    background: var(--bg-subtle);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background: var(--border-medium);
}

/* ================================
   SKILL GALAXY SCREEN
   ================================ */
.galaxy-layout {
    max-width: 900px;
    margin: 0 auto;
}

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

.galaxy-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
}

.galaxy-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.galaxy-level {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.galaxy-level h3 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-light);
}

.level-progress-text {
    font-size: 0.85rem;
    font-weight: normal;
    color: var(--text-muted);
}

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

.star-node {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.2s;
    cursor: pointer;
}

.star-node:hover {
    transform: scale(1.2);
    box-shadow: 0 0 12px rgba(102, 126, 234, 0.5);
}

.star-node.locked {
    background: var(--bg-subtle);
    color: var(--text-muted);
}

.star-node.locked:hover {
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.2);
}

.star-node.available {
    background: var(--primary-bg);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.star-node.mastered {
    background: var(--success);
    color: white;
}

.star-node.mastered:hover {
    box-shadow: 0 0 12px rgba(0, 184, 148, 0.5);
}

/* Word Detail Modal */
.word-detail-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.word-detail-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.word-detail-card {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    max-width: 450px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

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

.word-detail-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-subtle);
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.word-detail-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.word-detail-header {
    margin-bottom: var(--space-lg);
}

.word-detail-header h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.word-detail-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
}

.word-detail-status.mastered {
    background: var(--success-bg);
    color: var(--success);
}

.word-detail-status.in-progress {
    background: var(--primary-bg);
    color: var(--primary);
}

.word-detail-status.locked {
    background: var(--bg-subtle);
    color: var(--text-muted);
}

.word-detail-body {
    margin-bottom: var(--space-lg);
}

.word-detail-definition {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.word-detail-example {
    font-style: italic;
    color: var(--text-secondary);
    padding: var(--space-md);
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary);
    margin-bottom: var(--space-md);
}

.word-detail-synonyms {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.word-detail-level {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-light);
}

/* ================================
   COLLECTION SCREEN
   ================================ */
.collection-layout {
    max-width: 900px;
    margin: 0 auto;
}

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

.collection-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    flex: 1;
}

.collection-stats {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.collection-categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.category-btn {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.category-btn:hover {
    border-color: var(--primary);
}

.category-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.collection-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    min-height: 200px;
}

.collection-item {
    position: relative;
    background: linear-gradient(145deg, var(--bg-card), var(--bg-subtle));
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.collection-item-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.collection-item:hover .collection-item-glow {
    opacity: 1;
}

.collection-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.collection-item.owned {
    border: 2px solid var(--primary-light);
}

.collection-item.owned:hover {
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.collection-item.locked {
    background: linear-gradient(145deg, #f0f0f0, #e0e0e0);
    border: 2px dashed var(--border-medium);
    opacity: 0.7;
}

.collection-item.locked:hover {
    transform: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.collection-item-emoji {
    font-size: 2.5rem;
    filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.2));
    transition: transform 0.3s ease;
}

.collection-item:hover .collection-item-emoji {
    transform: scale(1.1);
}

.collection-item.locked .collection-item-emoji {
    filter: grayscale(100%) opacity(0.5);
}

.collection-item-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    line-height: 1.2;
    max-height: 2.4em;
    overflow: hidden;
}

.collection-item.locked .collection-item-name {
    color: var(--text-muted);
}

.collection-item-rarity {
    font-size: 0.65rem;
    color: var(--text-secondary);
    background: var(--bg-subtle);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

/* Rarity color effects for owned items */
.collection-item.owned[data-rarity="common"] {
    border-color: #b2bec3;
}

.collection-item.owned[data-rarity="uncommon"] {
    border-color: #00b894;
    box-shadow: 0 4px 15px rgba(0, 184, 148, 0.2);
}

.collection-item.owned[data-rarity="rare"] {
    border-color: #0984e3;
    box-shadow: 0 4px 15px rgba(9, 132, 227, 0.25);
}

.collection-item.owned[data-rarity="legendary"] {
    border-color: #fdcb6e;
    box-shadow: 0 4px 20px rgba(253, 203, 110, 0.4);
    background: linear-gradient(145deg, #fff9e6, #fff3cc);
}

.collection-item.owned[data-rarity="legendary"]::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 40%, rgba(255, 215, 0, 0.1) 50%, transparent 60%);
    animation: shimmer 2s infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ================================
   SHOP PANEL
   ================================ */
.shop-panel {
    position: fixed;
    top: 0;
    right: -500px;
    width: 500px;
    height: 100vh;
    background: var(--bg-card);
    box-shadow: var(--shadow-xl);
    z-index: 200;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
}

.shop-panel.open {
    right: 0;
}

.shop-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-light);
}

.shop-header h2 {
    font-family: var(--font-display);
    font-size: 1.25rem;
}

.shop-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--bg-subtle);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.shop-close:hover {
    background: var(--danger-bg);
    color: var(--danger);
}

.shop-xp-display {
    padding: var(--space-md) var(--space-lg);
    background: var(--primary-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.shop-xp-value {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.25rem;
}

.shop-message {
    padding: 0 var(--space-lg);
    font-size: 0.85rem;
    min-height: 24px;
}

.shop-message.success { color: var(--success); }
.shop-message.error { color: var(--danger); }

.shop-categories {
    padding: var(--space-md) var(--space-lg);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    border-bottom: 1px solid var(--border-light);
}

.category-tab {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-subtle);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}

.category-tab:hover {
    background: var(--border-medium);
}

.category-tab.active {
    background: var(--primary);
    color: white;
}

.shop-items {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    align-content: start;
}

.shop-item {
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid transparent;
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
}

.shop-item:hover:not(.owned):not(.too-expensive) {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.shop-item.owned {
    opacity: 0.5;
    cursor: default;
}

.shop-item.too-expensive {
    opacity: 0.6;
}

.shop-item-emoji {
    font-size: 2rem;
    margin-bottom: var(--space-xs);
}

.shop-item-name {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.shop-item-price {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
}

.shop-item.owned .shop-item-price {
    color: var(--success);
}

/* Overlay */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 150;
}

.overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ================================
   MODAL
   ================================ */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 300;
    padding: var(--space-lg);
}

.modal.open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    max-width: 700px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-light);
}

.modal-header h2 {
    font-family: var(--font-display);
    font-size: 1.25rem;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--bg-subtle);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
}

/* Rules Modal */
.rules-body {
    font-size: 0.95rem;
}

.rules-section {
    margin-bottom: var(--space-xl);
}

.rules-section h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    color: var(--primary);
}

.rules-section ol,
.rules-section ul {
    padding-left: var(--space-lg);
}

.rules-section li {
    margin-bottom: var(--space-sm);
}

.rewards-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-md) 0;
}

.rewards-table th,
.rewards-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.rewards-table th {
    background: var(--bg-subtle);
    font-weight: 600;
}

.rules-note {
    background: var(--warning-bg);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--warning);
    margin-top: var(--space-md);
}

.difficulty-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.diff-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
}

.diff-icon {
    font-size: 1.5rem;
}

.diff-item p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
}

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

.tips-section li {
    padding: var(--space-sm) 0;
}

/* ================================
   CELEBRATION
   ================================ */
.celebration-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 400;
}

.celebration-overlay.show {
    opacity: 1;
    visibility: visible;
}

.celebration-content {
    text-align: center;
    animation: celebratePop 0.5s ease;
}

.celebration-icon {
    font-size: 6rem;
    display: block;
    margin-bottom: var(--space-md);
}

.celebration-message {
    font-family: var(--font-display);
    font-size: 2rem;
    color: white;
}

@keyframes celebratePop {
    0% { transform: scale(0.5); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

/* ================================
   RESPONSIVE - TABLET
   ================================ */
@media (max-width: 1024px) {
    .app-container {
        padding-right: var(--space-lg);
    }

    .side-buttons {
        right: 10px;
    }

    .side-btn {
        width: 50px;
        height: 50px;
    }

    .side-btn-icon {
        font-size: 1.25rem;
    }

    .dashboard-layout {
        grid-template-columns: 1fr;
    }

    .dashboard-left {
        order: 2;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }

    .dashboard-right {
        order: 1;
    }
}

/* ================================
   RESPONSIVE - MOBILE
   ================================ */
@media (max-width: 768px) {
    .app-container {
        padding: var(--space-md);
    }

    .side-buttons {
        position: fixed;
        right: auto;
        left: 50%;
        top: auto;
        bottom: 20px;
        transform: translateX(-50%);
        flex-direction: row;
        background: var(--bg-card);
        padding: var(--space-sm);
        border-radius: var(--radius-full);
        box-shadow: var(--shadow-xl);
    }

    .side-btn {
        width: 44px;
        height: 44px;
    }

    .side-btn-label {
        display: none;
    }

    .app-header {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .header-brand {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .brand-tagline {
        border-left: none;
        padding-left: 0;
    }

    .header-stats {
        width: 100%;
        justify-content: center;
    }

    .stat-badge {
        flex: 1;
        justify-content: center;
    }

    .badge-label {
        display: none;
    }

    .dashboard-left {
        grid-template-columns: 1fr;
    }

    .start-content {
        flex-direction: column;
        text-align: center;
    }

    .start-btn {
        width: 100%;
        justify-content: center;
    }

    .learn-header,
    .quiz-header {
        flex-wrap: wrap;
    }

    .word-text {
        font-size: 2rem;
    }

    .flashcard-front,
    .flashcard-back {
        padding: var(--space-lg);
        min-height: 300px;
    }

    .results-stats {
        flex-wrap: wrap;
    }

    .shop-panel {
        width: 100%;
        right: -100%;
    }

    .main-content {
        padding-bottom: 80px;
    }

    /* Dream Home Mobile */
    .dream-home-section {
        padding: var(--space-md);
    }

    .dream-home-title {
        font-size: 1.25rem;
    }

    .dream-home-stats {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .dh-stat {
        flex-direction: row;
        justify-content: flex-start;
        gap: var(--space-md);
        padding: var(--space-sm) var(--space-md);
    }

    .comparison-label {
        font-size: 0.7rem;
        padding: 4px 8px;
    }

    .slider-handle {
        width: 36px;
        height: 36px;
    }

    .slider-arrows span {
        font-size: 0.7rem;
    }
}

/* ================================
   DREAM HOME BUILDER SECTION
   ================================ */
.dream-home-section {
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    margin-top: var(--space-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.dream-home-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.dream-home-header {
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    transition: background 0.2s ease;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.dream-home-section.collapsed .dream-home-header {
    border-radius: var(--radius-xl);
}

.dream-home-header:hover {
    background: rgba(99, 102, 241, 0.1);
}

.dream-home-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.dh-header-percent {
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
}

.dh-toggle-icon {
    color: var(--text-secondary);
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.dream-home-section.collapsed .dh-toggle-icon {
    transform: rotate(-90deg);
}

.dream-home-content {
    padding: 0 var(--space-xl) var(--space-xl);
    max-height: 800px;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease, opacity 0.3s ease;
    opacity: 1;
}

.dream-home-section.collapsed .dream-home-content {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
}

.dream-home-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--text-primary);
    margin: 0;
    animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
    0%, 100% { text-shadow: 0 0 10px rgba(99, 102, 241, 0.3); }
    50% { text-shadow: 0 0 20px rgba(99, 102, 241, 0.5), 0 0 30px rgba(99, 102, 241, 0.3); }
}

.dream-home-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: var(--space-md);
    text-align: center;
}

.dream-home-progress {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    max-width: 400px;
    margin: 0 auto var(--space-lg);
}

.dhp-bar {
    flex: 1;
    height: 12px;
    background: var(--bg-subtle);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.dhp-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 6px;
    transition: width 0.5s ease;
    position: relative;
}

.dhp-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.dhp-text {
    font-weight: 600;
    color: var(--primary);
    white-space: nowrap;
    min-width: 100px;
    text-align: right;
}

/* Image Comparison Container */
.image-comparison-container {
    margin: var(--space-lg) 0;
}

.image-comparison {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    cursor: ew-resize;
    touch-action: none;
    aspect-ratio: 16 / 10;
    background: var(--bg-subtle);
}

.comparison-after,
.comparison-before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.comparison-after img,
.comparison-before img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}

.comparison-before {
    clip-path: inset(0 50% 0 0);
    transition: clip-path 0.05s ease-out;
}

.comparison-label {
    position: absolute;
    bottom: 16px;
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.before-label {
    left: 16px;
}

.after-label {
    right: 16px;
}

/* Slider */
.comparison-slider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: ew-resize;
    z-index: 10;
    transform: translateX(-50%);
    transition: left 0.05s ease-out;
}

.slider-line {
    flex: 1;
    width: 3px;
    background: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.slider-handle {
    width: 48px;
    height: 48px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
}

.slider-handle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0,0,0,0.4);
}

.slider-handle:active {
    transform: scale(0.95);
}

.slider-arrows {
    display: flex;
    gap: 4px;
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: bold;
}

.comparison-hint {
    text-align: center;
    margin-top: var(--space-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    animation: hintPulse 2s ease-in-out infinite;
}

@keyframes hintPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.hint-icon {
    animation: hintBounce 1s ease-in-out infinite;
}

@keyframes hintBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* Dream Home Stats */
.dream-home-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

.dh-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    min-width: 120px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.dh-stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.dh-stat-icon {
    font-size: 1.5rem;
}

.dh-stat-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.dh-stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Responsive adjustments for image comparison */
@media (max-width: 768px) {
    .dream-home-section {
        margin: var(--space-md);
        padding: var(--space-lg);
        border-radius: var(--radius-lg);
    }

    .dream-home-title {
        font-size: 1.4rem;
    }

    .dream-home-progress {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .dhp-text {
        text-align: center;
    }

    .image-comparison {
        aspect-ratio: 4 / 3;
        border-radius: var(--radius-lg);
    }

    .comparison-label {
        font-size: 0.75rem;
        padding: 6px 12px;
        bottom: 10px;
    }

    .before-label {
        left: 10px;
    }

    .after-label {
        right: 10px;
    }

    .slider-handle {
        width: 40px;
        height: 40px;
    }

    .dream-home-stats {
        gap: var(--space-md);
    }

    .dh-stat {
        min-width: 90px;
        padding: var(--space-sm);
    }

    .dh-stat-value {
        font-size: 1.25rem;
    }
}

/* ================================
   MINI DREAM HOME (Collection Page)
   ================================ */
.mini-dream-home {
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.mini-dh-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    transition: background 0.2s ease;
}

.mini-dh-header:hover {
    background: rgba(99, 102, 241, 0.1);
}

.mini-dh-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.mini-dh-icon {
    font-size: 1.25rem;
}

.mini-dh-percent {
    background: var(--primary);
    color: white;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    margin-left: var(--space-sm);
}

.mini-dh-toggle-icon {
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.mini-dream-home.collapsed .mini-dh-toggle-icon {
    transform: rotate(-90deg);
}

.mini-dh-content {
    padding: 0 var(--space-lg) var(--space-lg);
    max-height: 500px;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.mini-dream-home.collapsed .mini-dh-content {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
}

.mini-image-comparison {
    position: relative;
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 16 / 9;
    box-shadow: var(--shadow-sm);
    cursor: ew-resize;
    touch-action: none;
}

.mini-comparison-after,
.mini-comparison-before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.mini-comparison-after img,
.mini-comparison-before img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    user-select: none;
}

.mini-comparison-before {
    clip-path: inset(0 50% 0 0);
}

.mini-comparison-slider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 3px;
    background: white;
    box-shadow: 0 0 8px rgba(0,0,0,0.5);
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: ew-resize;
    z-index: 10;
}

.mini-slider-handle {
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    transition: transform 0.2s ease;
}

.mini-slider-handle:hover {
    transform: scale(1.15);
}