/* 🎨 Word Safari: Enhanced Styles with Achievements & Progression */

/* ========== RESET ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #FF8C42;
    --color-secondary: #FFD93D;
    --color-accent: #6BCF7F;
    --color-sky: #87CEEB;
    --color-earth: #D2B48C;
    --color-dark: #2C3E50;
    --color-light: #F8F9FA;
    --color-success: #4CAF50;
    --color-error: #FF5252;
    --color-warning: #FFC107;
    --color-info: #2196F3;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --font-primary: 'Nunito', sans-serif;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
}

body {
    font-family: var(--font-primary);
    background: radial-gradient(circle at top, #FFD93D 0%, #FF8C42 40%, #E65100 100%);
    background-attachment: fixed;
    min-height: 100vh;
    color: var(--color-dark);
    overflow-x: hidden;
}

#app {
    width: 100vw;
    height: 100vh;
    position: relative;
}

.screen {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: var(--spacing-md);
    animation: fade-in 0.5s ease-out;
}

.screen.active {
    display: flex;
}

#start-screen {
    position: relative;
    overflow-y: auto;
    justify-content: flex-start;
}

.title-container {
    position: relative;
    z-index: 2;
    text-align: center;
    margin-bottom: var(--spacing-md);
    animation: bounce-in 0.8s ease-out;
}

.game-title {
    font-size: 4rem;
    font-weight: 800;
    text-shadow: 4px 4px 8px rgba(0, 0, 0, 0.3);
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark);
}

/* ========== STATS DASHBOARD ========== */
.stats-dashboard {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    width: 100%;
    max-width: 900px;
    z-index: 2;
    position: relative;
}

.stat-item {
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 2px solid rgba(255, 255, 255, 0.6);
    padding: var(--spacing-sm);
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.25);
    background: rgba(255, 255, 255, 0.5);
}

.stat-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
}

.stat-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-dark);
    opacity: 0.7;
    font-weight: 600;
}

/* ========== DIFFICULTY SELECTOR ========== */
.difficulty-selector {
    margin-bottom: var(--spacing-md);
    text-align: center;
    z-index: 2;
    position: relative;
}

.difficulty-selector label {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.difficulty-buttons {
    display: flex;
    gap: var(--spacing-xs);
    justify-content: center;
}

.difficulty-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.difficulty-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.difficulty-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.difficulty-emoji {
    font-size: 1.2rem;
}

.difficulty-badge {
    position: absolute;
    top: 80px;
    right: var(--spacing-md);
    background: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: var(--shadow-md);
    z-index: 45;
}

.menu-buttons {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
    max-width: 400px;
    margin-bottom: var(--spacing-xl);
}

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.2rem;
    font-weight: 800;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.1s ease;
    box-shadow: 0 6px 0 rgba(0, 0, 0, 0.2), 0 8px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-family: var(--font-primary);
    position: relative;
    top: 0;
}

.btn:hover {
    top: 2px;
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.2), 0 6px 10px rgba(0, 0, 0, 0.1);
}

.btn:active {
    top: 6px;
    box-shadow: 0 0 0 rgba(0, 0, 0, 0.2), 0 2px 5px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background: linear-gradient(180deg, #FF9E5E 0%, #FF7B25 100%);
    color: #fff;
    box-shadow: 0 6px 0 #D35400, 0 8px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    box-shadow: 0 4px 0 #D35400, 0 6px 10px rgba(0, 0, 0, 0.1);
}

.btn-primary:active {
    box-shadow: 0 0 0 #D35400, 0 2px 5px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background: linear-gradient(180deg, #FFE873 0%, #FFD000 100%);
    color: var(--color-dark);
    box-shadow: 0 6px 0 #D4AC0D, 0 8px 15px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    box-shadow: 0 4px 0 #D4AC0D, 0 6px 10px rgba(0, 0, 0, 0.1);
}

.btn-secondary:active {
    box-shadow: 0 0 0 #D4AC0D, 0 2px 5px rgba(0, 0, 0, 0.1);
}

.btn-info {
    background: linear-gradient(180deg, #81DE96 0%, #51BD67 100%);
    color: #fff;
    box-shadow: 0 6px 0 #27AE60, 0 8px 15px rgba(0, 0, 0, 0.1);
}

.btn-info:hover {
    box-shadow: 0 4px 0 #27AE60, 0 6px 10px rgba(0, 0, 0, 0.1);
}

.btn-info:active {
    box-shadow: 0 0 0 #27AE60, 0 2px 5px rgba(0, 0, 0, 0.1);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 1rem;
    background: #fff;
    border: 2px solid var(--color-dark);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-primary);
}

.btn-back {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: #fff;
    border: 2px solid var(--color-dark);
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    font-family: var(--font-primary);
}

.btn-back:hover {
    background: var(--color-light);
    transform: translateX(-5px);
}

.sound-toggle {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-sm);
    background: #fff;
    border: 2px solid var(--color-dark);
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sound-toggle:hover {
    transform: scale(1.1);
}

.sound-toggle.muted {
    opacity: 0.5;
}

#game-screen {
    background:
        linear-gradient(180deg, rgba(135, 206, 235, 0.8) 0%, rgba(210, 180, 140, 0.9) 100%),
        repeating-linear-gradient(45deg, transparent, transparent 100px, rgba(255, 255, 255, 0.05) 100px, rgba(255, 255, 255, 0.05) 200px);
    background-size: cover;
    background-position: center;
}

.hud {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    z-index: 100;
}

.hud-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.hud-label {
    font-size: 0.8rem;
    color: var(--color-dark);
    opacity: 0.7;
    font-weight: 600;
}

.hud-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
}

.clue-box {
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    z-index: 50;
    animation: bounce-in 0.5s ease-out;
    max-width: 90%;
}

.clue-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-dark);
}

#clue-word {
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: 800;
}

.game-area {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    grid-auto-rows: min-content;
    gap: 30px;
    padding: 160px 40px 100px 40px;
    justify-items: center;
    align-content: center;
}

/* ========== ENHANCED ANIMAL CARDS ========== */
.animal-card {
    position: relative;
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: float-up-down 3s ease-in-out infinite;
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.25));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.animal-card:hover {
    transform: scale(1.15);
    z-index: 10;
    animation: none;
}

.animal-card.small .animal-art {
    width: 80px;
    height: 80px;
}

.animal-card.medium .animal-art {
    width: 120px;
    height: 120px;
}

.animal-card.large .animal-art {
    width: 160px;
    height: 160px;
}

.animal-card .animal-art {
    width: 120px;
    height: 120px;
    display: block;
    object-fit: contain;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.animal-art--raster {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.animal-art--vector {
    image-rendering: auto;
}

/* Idle animations for animals */
.animal-card.idle-blink .animal-art {
    animation: blink 5s ease-in-out infinite;
}

.animal-card.idle-breathe .animal-art {
    animation: breathe 4s ease-in-out infinite;
}

.animal-card.idle-wiggle {
    animation: wiggle 6s ease-in-out infinite;
}

.animal-label {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 15px;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
    pointer-events: none;
}

/* ========== COMBO COUNTER ========== */
.combo-counter {
    position: absolute;
    top: 150px;
    right: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-warning), var(--color-secondary));
    padding: var(--spacing-md);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    text-align: center;
    z-index: 40;
    animation: pulse 1s ease-in-out infinite;
}

.combo-text {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-dark);
}

.combo-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.progress-container {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    max-width: 600px;
    height: 20px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-success));
    width: 0%;
    transition: width 0.5s ease;
}

#spelling-screen {
    background: linear-gradient(135deg, #FFE66D 0%, #FFD93D 100%);
}

.screen-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-dark);
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.spelling-container {
    background: #fff;
    padding: var(--spacing-xl);
    border-radius: 30px;
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 100%;
}

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

.btn-audio {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    font-family: var(--font-primary);
}

.btn-audio:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.spelling-hint {
    margin-top: var(--spacing-sm);
    font-size: 1rem;
    color: var(--color-dark);
    opacity: 0.7;
}

.spelling-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1.5rem;
    font-weight: 600;
    border: 3px solid var(--color-primary);
    border-radius: 15px;
    text-align: center;
    font-family: var(--font-primary);
    margin-bottom: var(--spacing-md);
}

.spelling-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(107, 207, 127, 0.2);
}

.spelling-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.spelling-buttons .btn {
    flex: 1;
}

.spelling-feedback {
    min-height: 60px;
    padding: var(--spacing-sm);
    border-radius: 15px;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.spelling-feedback.correct {
    background: var(--color-success);
    color: #fff;
    animation: bounce-in 0.5s ease-out;
}

.spelling-feedback.wrong {
    background: var(--color-error);
    color: #fff;
    animation: shake 0.5s ease-out;
}

.spelling-score {
    display: flex;
    justify-content: space-around;
    padding-top: var(--spacing-sm);
    border-top: 2px solid var(--color-light);
    font-size: 1.1rem;
}

.sentence-animal-box {
    text-align: center;
    height: 120px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sentence-animal-box .animal-art {
    width: 120px;
    height: 120px;
    object-fit: contain;
}

.sentence-drop-zone {
    font-size: 1.5rem;
    text-align: center;
    margin: 20px 0;
    font-weight: 700;
    background: #f8f9fa;
    padding: 20px;
    border-radius: 15px;
    border: 2px dashed var(--color-primary);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    align-items: center;
}

.drop-slot {
    min-width: 100px;
    border-bottom: 3px solid #ccc;
    color: var(--color-primary);
    padding: 5px;
}

.word-bank-title {
    text-align: center;
    margin-bottom: 10px;
    opacity: 0.7;
}

.word-bank {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

#daily-screen {
    background: linear-gradient(135deg, #6BCF7F 0%, #4CAF50 100%);
}

.daily-container {
    background: #fff;
    padding: var(--spacing-xl);
    border-radius: 30px;
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    width: 100%;
}

.daily-timer {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.timer-label {
    display: block;
    font-size: 1rem;
    color: var(--color-dark);
    opacity: 0.7;
    margin-bottom: var(--spacing-xs);
}

.timer-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primary);
}

.daily-question {
    margin-bottom: var(--spacing-lg);
}

.question-text {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.answer-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.answer-btn {
    padding: var(--spacing-md);
    font-size: 1.1rem;
    font-weight: 600;
    background: var(--color-light);
    border: 3px solid transparent;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-primary);
}

.answer-btn:hover {
    background: #fff;
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

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

.answer-btn.wrong {
    background: var(--color-error);
    color: #fff;
    border-color: var(--color-error);
    animation: shake 0.5s ease-out;
}

.daily-progress {
    text-align: center;
    font-size: 1.2rem;
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--color-light);
}

#end-screen {
    background: linear-gradient(135deg, #FF8C42 0%, #FFD93D 100%);
}

.end-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.stat-card {
    background: #fff;
    padding: var(--spacing-lg);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    min-width: 150px;
    animation: bounce-in 0.5s ease-out;
}

.stat-card:nth-child(2) {
    animation-delay: 0.2s;
}

.stat-card:nth-child(3) {
    animation-delay: 0.4s;
}

.stat-card:nth-child(4) {
    animation-delay: 0.6s;
}

.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1rem;
    color: var(--color-dark);
    opacity: 0.7;
}

.end-message {
    background: #fff;
    padding: var(--spacing-lg);
    border-radius: 20px;
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.end-message p {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark);
    text-align: center;
}

/* ========== UNLOCKED ACHIEVEMENTS ========== */
.unlocked-achievements {
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    width: 100%;
}

.unlocked-achievement {
    background: #fff;
    padding: var(--spacing-md);
    border-radius: 15px;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-md);
    animation: slide-in-right 0.5s ease-out;
}

.unlocked-achievement-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-warning), var(--color-secondary));
    border-radius: 50%;
    filter: grayscale(0);
}

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

.unlocked-achievement-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 0.2rem;
}

.unlocked-achievement-desc {
    font-size: 0.9rem;
    color: var(--color-dark);
    opacity: 0.7;
}

.end-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.end-buttons .btn {
    flex: 1;
    min-width: 180px;
}

/* ========== ACHIEVEMENTS MODAL ========== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
    max-height: 60vh;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.achievement-card {
    background: var(--color-light);
    padding: var(--spacing-md);
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.achievement-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.achievement-card.unlocked {
    background: linear-gradient(135deg, rgba(255, 140, 66, 0.1), rgba(255, 217, 61, 0.1));
    border-color: var(--color-primary);
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.achievement-card.locked .achievement-icon {
    filter: grayscale(1);
    opacity: 0.3;
}

.achievement-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.achievement-desc {
    font-size: 0.85rem;
    color: var(--color-dark);
    opacity: 0.7;
    line-height: 1.3;
}

.achievement-progress {
    margin-top: var(--spacing-xs);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ========== SW UPDATE BANNER ========== */
.sw-update-banner {
    position: fixed;
    left: 50%;
    bottom: var(--spacing-lg);
    transform: translateX(-50%);
    width: min(92vw, 560px);
    background: rgba(255, 255, 255, 0.97);
    border: 2px solid var(--color-primary);
    border-radius: 18px;
    box-shadow: var(--shadow-xl);
    padding: 12px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: 10001;
}

.sw-update-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sw-update-actions .btn-small {
    padding: 6px 12px;
}

/* ========== ACHIEVEMENT TOAST ========== */
.achievement-toast {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-warning), var(--color-secondary));
    padding: var(--spacing-md);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    z-index: 10000;
    animation: slide-in-right 0.5s ease-out;
    max-width: 350px;
}

.achievement-toast.hidden {
    display: none;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast-icon {
    font-size: 2.5rem;
    animation: bounce-in 0.6s ease-out;
}

.toast-text {
    flex: 1;
}

.toast-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 0.2rem;
}

.toast-name {
    font-size: 1.2rem;
    font-weight: 800;
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fade-in 0.3s ease-out;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: #fff;
    padding: var(--spacing-xl);
    border-radius: 30px;
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-lg);
    animation: bounce-in 0.5s ease-out;
}

.modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--color-error);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    transform: rotate(90deg);
}

.modal-content h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
}

.daily-result-card {
    max-width: 520px;
    text-align: center;
}

.daily-result-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.daily-result-stat {
    background: var(--color-light);
    border-radius: 14px;
    padding: var(--spacing-sm);
}

.daily-result-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-primary);
}

.daily-result-label {
    display: block;
    margin-top: 4px;
    font-size: 0.85rem;
    opacity: 0.75;
}

.settings-card {
    max-width: 560px;
}

.settings-group {
    margin-bottom: var(--spacing-md);
}

.settings-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    margin-bottom: 10px;
}

.settings-group input[type="range"] {
    width: 100%;
    accent-color: var(--color-primary);
}

.settings-toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    padding: 10px 12px;
    background: var(--color-light);
    border-radius: 12px;
}

.settings-toggle-row label {
    font-weight: 600;
}

.settings-toggle-row input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
}

.settings-actions {
    margin-top: var(--spacing-md);
    display: flex;
    justify-content: center;
}

.welcome-card {
    max-width: 700px;
}

.welcome-intro {
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
}

.welcome-install-panel {
    background: var(--color-light);
    border-radius: 14px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.welcome-install-status {
    margin-top: var(--spacing-sm);
    font-size: 0.92rem;
    opacity: 0.78;
}

.welcome-install-steps {
    width: min(100%, 360px);
    margin: 12px auto 0;
    padding-left: 1.25rem;
    line-height: 1.45;
    text-align: left;
}

.welcome-install-steps li + li {
    margin-top: 6px;
}

.welcome-heartfelt {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.welcome-heartfelt h3 {
    margin-bottom: 8px;
    color: var(--color-dark);
}

.welcome-heartfelt p {
    line-height: 1.5;
    margin-bottom: 8px;
}

.welcome-links {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.welcome-links a {
    color: var(--color-primary);
    font-weight: 700;
    text-decoration: none;
}

.welcome-links a:hover {
    text-decoration: underline;
}

/* ========== PAUSE MENU ========== */
.pause-menu {
    max-width: 500px;
}

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

.pause-buttons .btn {
    width: 100%;
}

/* ========== ANIMAL FACT CARD ========== */
.fact-card {
    max-width: 600px;
}

.fact-animal-image {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.fact-animal-image .animal-art {
    width: 150px;
    height: 150px;
    object-fit: contain;
}

.fact-content {
    margin-bottom: var(--spacing-lg);
}

.fact-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.fact-details {
    background: var(--color-light);
    padding: var(--spacing-md);
    border-radius: 15px;
}

.fact-detail {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

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

.fact-detail strong {
    color: var(--color-primary);
}

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

.instruction-item {
    background: var(--color-light);
    padding: var(--spacing-md);
    border-radius: 15px;
    text-align: center;
}

.instruction-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.instruction-item h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.instruction-item p {
    font-size: 0.95rem;
    color: var(--color-dark);
    opacity: 0.8;
}

.tips-section {
    background: var(--color-secondary);
    padding: var(--spacing-md);
    border-radius: 15px;
    margin-bottom: var(--spacing-lg);
}

.tips-section h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.tips-section ul {
    list-style-position: inside;
    color: var(--color-dark);
}

.tips-section li {
    margin-bottom: var(--spacing-xs);
}

.feedback-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    background: #fff;
    padding: var(--spacing-xl);
    border-radius: 30px;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    animation: bounce-in 0.5s ease-out forwards;
    pointer-events: none;
}

.feedback-popup.correct {
    color: var(--color-success);
}

.feedback-popup.wrong {
    color: var(--color-error);
}

.hidden {
    display: none !important;
}

/* ========== PARTICLE EFFECTS ========== */
.confetti-particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: confetti-fall 2s ease-out forwards;
    pointer-events: none;
    z-index: 9999;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .game-title {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

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

    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .stat-value {
        font-size: 1.2rem;
    }

    .menu-buttons {
        max-width: 320px;
    }

    .btn {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .end-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .instructions-grid {
        grid-template-columns: 1fr;
    }

    .clue-box {
        top: 74px;
        width: min(calc(100% - 32px), 560px);
        padding: 0.85rem 1rem;
    }

    .clue-text {
        font-size: 1rem;
        text-align: center;
    }

    #clue-word {
        font-size: 1.25rem;
    }

    .game-area {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 18px 12px;
        padding: 156px 16px 88px;
        align-content: start;
        overflow-y: auto;
        overflow-x: hidden;
    }

    .animal-card {
        width: 100%;
        max-width: 132px;
        min-height: 112px;
    }

    .animal-card .animal-art {
        width: 72px;
        height: 72px;
    }

    .animal-card.small .animal-art {
        width: 60px;
        height: 60px;
    }

    .animal-card.medium .animal-art {
        width: 72px;
        height: 72px;
    }

    .animal-card.large .animal-art {
        width: 84px;
        height: 84px;
    }

    .animal-label {
        position: static;
        transform: none;
        margin-top: 0.5rem;
        max-width: 100%;
        padding: 0.35rem 0.6rem;
        text-align: center;
        white-space: normal;
        font-size: 0.8rem;
        line-height: 1.2;
    }

    .screen-title {
        font-size: 2rem;
    }

    .answer-options {
        grid-template-columns: 1fr;
    }

    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .difficulty-buttons {
        flex-wrap: wrap;
    }

    .daily-result-stats {
        grid-template-columns: 1fr;
    }

    .sw-update-banner {
        flex-direction: column;
        align-items: flex-start;
        bottom: var(--spacing-sm);
    }

    .settings-toggle-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .welcome-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}

@media (max-width: 420px) {
    .game-title {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .hud {
        padding: var(--spacing-xs) var(--spacing-sm);
        flex-wrap: wrap;
    }

    .hud-value {
        font-size: 1.2rem;
    }

    .clue-text {
        font-size: 1rem;
    }

    .clue-box {
        top: 70px;
        width: calc(100% - 24px);
        padding: 0.75rem 0.85rem;
    }

    #clue-word {
        font-size: 1.1rem;
    }

    .modal-content,
    .spelling-container,
    .daily-container {
        padding: var(--spacing-md);
    }

    .game-area {
        gap: 14px 10px;
        padding: 150px 12px 84px;
    }

    .animal-card {
        max-width: 124px;
        min-height: 104px;
    }

    .animal-card .animal-art {
        width: 68px;
        height: 68px;
    }

    .animal-card.small .animal-art {
        width: 56px;
        height: 56px;
    }

    .animal-card.medium .animal-art {
        width: 68px;
        height: 68px;
    }

    .animal-card.large .animal-art {
        width: 78px;
        height: 78px;
    }

    .animal-label {
        font-size: 0.75rem;
        padding: 0.3rem 0.55rem;
    }

    .combo-counter {
        right: var(--spacing-sm);
        top: 120px;
        padding: var(--spacing-sm);
    }

    .combo-value {
        font-size: 2rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .animal-card,
    .animal-card.idle-blink .animal-art,
    .animal-card.idle-breathe .animal-art,
    .animal-card.idle-wiggle,
    .combo-counter,
    .feedback-popup,
    .achievement-toast,
    .unlocked-achievement,
    .modal,
    .modal-content,
    .screen {
        animation: none !important;
        transition: none !important;
    }

    .confetti-particle {
        display: none !important;
    }
}

body.reduced-motion .animal-card,
body.reduced-motion .animal-card.idle-blink .animal-art,
body.reduced-motion .animal-card.idle-breathe .animal-art,
body.reduced-motion .animal-card.idle-wiggle,
body.reduced-motion .combo-counter,
body.reduced-motion .feedback-popup,
body.reduced-motion .achievement-toast,
body.reduced-motion .unlocked-achievement,
body.reduced-motion .modal,
body.reduced-motion .modal-content,
body.reduced-motion .screen {
    animation: none !important;
    transition: none !important;
}

body.reduced-motion .confetti-particle {
    display: none !important;
}

/* ========== KEYFRAMES ========== */
@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce-in {
    0% {
        transform: scale(0.6);
        opacity: 0;
    }

    60% {
        transform: scale(1.05);
        opacity: 1;
    }

    100% {
        transform: scale(1);
    }
}

@keyframes float-up-down {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

@keyframes slide-in-right {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes blink {

    0%,
    90%,
    100% {
        opacity: 1;
    }

    95% {
        opacity: 0.3;
    }
}

@keyframes breathe {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.03);
    }
}

@keyframes wiggle {

    0%,
    100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(-2deg);
    }

    75% {
        transform: rotate(2deg);
    }
}

@keyframes confetti-fall {
    from {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }

    to {
        transform: translateY(500px) rotate(720deg);
        opacity: 0;
    }
}