/* Fitbit Steps Clicker - Modern Fitness Theme */

:root {
    --primary-color: #00D4AA; /* Fitbit green */
    --secondary-color: #00A6FB; /* Fitness blue */
    --accent-color: #FF6B35; /* Energy orange */
    --background-color: #0A0A0A;
    --card-color: #1A1A1A;
    --text-color: #FFFFFF;
    --text-secondary: #B0B0B0;
    --border-color: #333333;
    --success-color: #00D4AA;
    --warning-color: #FF6B35;
    --shadow: 0 4px 20px rgba(0, 212, 170, 0.3);
    --shadow-hover: 0 8px 30px rgba(0, 212, 170, 0.5);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--background-color) 0%, #1A1A1A 100%);
    color: var(--text-color);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    animation: fadeInDown 1s ease-out;
}

.header h1 {
    font-size: 3rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0, 212, 170, 0.3);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

/* Stats Container */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.stat-card {
    background: var(--card-color);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 10px rgba(0, 212, 170, 0.3);
}

.stat-value.health-optimal {
    background: linear-gradient(45deg, #00D4AA, #00A6FB);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-value.health-underweight {
    background: linear-gradient(45deg, #FF6B35, #FF4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-value.health-overweight {
    background: linear-gradient(45deg, #FF6B35, #FF8C42);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Main Game Area */
.main-game {
    position: relative;
    margin-bottom: 30px;
}

.clicker-container {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.fitbit-device {
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, #000000, #1A1A1A);
    border-radius: 30px;
    position: relative;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
    border: 3px solid var(--primary-color);
    animation: pulse 2s infinite;
}

.fitbit-device:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.fitbit-device:active {
    transform: scale(0.95);
    box-shadow: 0 2px 10px rgba(0, 212, 170, 0.6);
}

.fitbit-screen {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 50px;
    background: #000000;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.step-icon {
    font-size: 3rem;
    margin-bottom: 10px;
    animation: bounce 1s infinite;
}

.click-text {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: bold;
    text-align: center;
}

.click-feedback {
    position: absolute;
    font-size: 2rem;
    color: var(--accent-color);
    pointer-events: none;
    animation: floatUp 1s ease-out forwards;
}

.fitbit-band {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: var(--primary-color);
    border-radius: 0 0 25px 25px;
}

/* Floating Particles */
.floating-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    font-size: 2rem;
    animation: floatParticle 3s ease-out forwards;
    opacity: 0;
}

/* Game Controls */
.game-controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tab-button {
    background: var(--card-color);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
}

.tab-button:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.tab-button.active {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow);
}

/* Tab Content */
.tab-content {
    background: var(--card-color);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.tab-pane.active {
    display: block;
}

/* Upgrades Grid */
.upgrades-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.upgrade-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.upgrade-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.upgrade-card.purchased {
    background: rgba(0, 212, 170, 0.1);
    border-color: var(--success-color);
}

.upgrade-card.locked {
    opacity: 0.5;
    pointer-events: none;
}

.upgrade-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.upgrade-icon {
    font-size: 2rem;
    margin-right: 15px;
}

.upgrade-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.upgrade-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.upgrade-cost {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.upgrade-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    width: 100%;
}

.upgrade-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Upgrade Sections */
.upgrade-section {
    margin-bottom: 40px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.upgrade-section-title {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.5rem;
    font-weight: bold;
}

.upgrade-section-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.9rem;
    font-style: italic;
}

/* Tab Headers */
.tab-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tab-header h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.tab-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.upgrade-button:disabled {
    background: var(--border-color);
    cursor: not-allowed;
    transform: none;
}

/* Achievements Grid */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.achievement-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.achievement-card.unlocked {
    background: rgba(0, 212, 170, 0.1);
    border-color: var(--success-color);
}

.achievement-card.locked {
    opacity: 0.6;
}

.achievement-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.achievement-icon {
    font-size: 2rem;
    margin-right: 15px;
}

.achievement-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

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

.achievement-reward {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--accent-color);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Statistics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.stat-name {
    color: var(--text-secondary);
}

.stat-number {
    font-weight: bold;
    color: var(--primary-color);
}

/* Daily Challenges */
.daily-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.daily-header h3 {
    color: var(--primary-color);
    margin: 0;
}

.streak-info {
    background: linear-gradient(45deg, var(--accent-color), #ff8c42);
    padding: 10px 15px;
    border-radius: 25px;
    box-shadow: var(--shadow);
}

.streak-count {
    font-weight: bold;
    color: white;
}

.daily-challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.daily-challenge-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.daily-challenge-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.daily-challenge-card.completed {
    background: rgba(0, 212, 170, 0.1);
    border-color: var(--success-color);
}

.daily-challenge-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.daily-challenge-icon {
    font-size: 2rem;
    margin-right: 15px;
}

.daily-challenge-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.daily-challenge-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.daily-challenge-progress {
    margin-bottom: 15px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 5px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 0.3s ease;
}

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

.daily-challenge-reward {
    background: var(--accent-color);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: bold;
    position: absolute;
    top: 10px;
    right: 10px;
}

.daily-challenge-status {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--success-color);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Save/Export Tab */
.save-export-container {
    max-width: 800px;
    margin: 0 auto;
}

.save-export-container h3 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
}

.save-section, .export-section, .import-section, .save-info-section {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
}

.save-section h4, .export-section h4, .import-section h4, .save-info-section h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.save-button, .export-button, .import-button, .copy-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1rem;
    transition: all 0.3s ease;
    margin-right: 10px;
    margin-bottom: 10px;
}

.save-button:hover, .export-button:hover, .import-button:hover, .copy-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.import-button {
    background: var(--accent-color);
}

.import-button:hover {
    background: #ff6b35;
}

.copy-button {
    background: var(--success-color);
}

.copy-button:hover {
    background: #00d4aa;
}

.export-textarea, .import-textarea {
    width: 100%;
    min-height: 120px;
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 15px;
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    resize: vertical;
    margin: 10px 0;
}

.export-textarea {
    background: rgba(0, 212, 170, 0.1);
    border-color: var(--primary-color);
}

.import-textarea {
    background: rgba(255, 107, 53, 0.1);
    border-color: var(--accent-color);
}

.save-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 10px;
}

.import-warning {
    color: var(--accent-color);
    font-size: 0.9rem;
    margin-top: 10px;
    font-weight: bold;
}

.save-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.save-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
}

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

.save-stat-value {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 0.9rem;
}

/* Settings Tab */
.settings-container {
    max-width: 800px;
    margin: 0 auto;
}

.settings-container h3 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
}

.settings-section {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
}

.settings-section h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.setting-info h5 {
    color: var(--text-color);
    margin-bottom: 5px;
    font-size: 1rem;
}

.setting-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* Toggle Switch */
.toggle {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: 0.4s;
    border-radius: 34px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

.toggle input:checked + .toggle-slider {
    background-color: var(--primary-color);
}

.toggle input:checked + .toggle-slider:before {
    transform: translateX(26px);
}

.toggle-slider:hover {
    box-shadow: 0 0 10px rgba(0, 212, 170, 0.3);
}

.toggle input:checked + .toggle-slider:hover {
    box-shadow: 0 0 10px rgba(0, 212, 170, 0.5);
}

.settings-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

.save-settings-button, .reset-settings-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.save-settings-button:hover, .reset-settings-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.reset-settings-button {
    background: var(--accent-color);
}

.reset-settings-button:hover {
    background: #ff6b35;
}

.reset-game-button {
    background: #ff4444;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.reset-game-button:hover {
    background: #cc0000;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 68, 68, 0.4);
}

.button-row {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 10px;
}

/* Rain Effects */
.rain-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
    overflow: hidden;
}

.rain-drop {
    position: absolute;
    font-size: 2rem;
    animation: rainFall 3s linear forwards;
    opacity: 0.8;
}

.rain-drop.big {
    font-size: 3rem;
    animation-duration: 4s;
}

.rain-drop.small {
    font-size: 1.5rem;
    animation-duration: 2s;
}

/* Background Animations */
.background-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.floating-element {
    position: absolute;
    opacity: 0.1;
    animation: float 20s ease-in-out infinite;
}

.floating-element.dumbbell {
    font-size: 4rem;
    color: #00D4AA;
}

.floating-element.water-bottle {
    font-size: 3rem;
    color: #00A6FB;
}

.floating-element.heart {
    font-size: 2.5rem;
    color: #FF6B35;
}

.floating-element.shoe {
    font-size: 3.5rem;
    color: #4A4A4A;
}

/* Enhanced Click Effects */
.click-burst {
    position: absolute;
    pointer-events: none;
    animation: clickBurst 1s ease-out forwards;
    z-index: 50;
}

.click-ripple {
    position: absolute;
    border: 3px solid #00D4AA;
    border-radius: 50%;
    animation: clickRipple 0.8s ease-out forwards;
    pointer-events: none;
    z-index: 40;
}

/* Progress Background Effects */
.progress-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity 2s ease;
}

.progress-background.active {
    opacity: 0.05;
}

.progress-background.many-upgrades {
    background: radial-gradient(circle at 20% 30%, #00D4AA 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, #00A6FB 0%, transparent 50%);
}

.progress-background.high-steps {
    background: linear-gradient(45deg, #00D4AA 0%, #00A6FB 50%, #FF6B35 100%);
}

.progress-background.legendary {
    background: radial-gradient(circle at 50% 50%, #FFD700 0%, #FF6B35 30%, transparent 70%);
}

/* Notifications */
.notifications {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    max-width: 300px;
}

.notification {
    background: var(--card-color);
    border: 2px solid var(--primary-color);
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 10px;
    box-shadow: var(--shadow);
    animation: slideInRight 0.5s ease-out;
    transform: translateX(100%);
}

.notification.show {
    transform: translateX(0);
}

.notification.hide {
    transform: translateX(100%);
    opacity: 0;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 212, 170, 0.3);
    }
    50% {
        box-shadow: 0 0 30px rgba(0, 212, 170, 0.6);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes floatUp {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateY(-50px) scale(1.5);
    }
}

@keyframes floatParticle {
    from {
        opacity: 0;
        transform: translateY(0) rotate(0deg);
    }
    10% {
        opacity: 1;
    }
    to {
        opacity: 0;
        transform: translateY(-100px) rotate(360deg);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* New Visual Effect Animations */
@keyframes rainFall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) translateX(0px) rotate(0deg);
    }
    25% {
        transform: translateY(-20px) translateX(10px) rotate(5deg);
    }
    50% {
        transform: translateY(-40px) translateX(-15px) rotate(-5deg);
    }
    75% {
        transform: translateY(-20px) translateX(5px) rotate(3deg);
    }
}

@keyframes clickBurst {
    0% {
        opacity: 1;
        transform: scale(0.5);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.5);
    }
    100% {
        opacity: 0;
        transform: scale(2);
    }
}

@keyframes clickRipple {
    0% {
        transform: scale(0.5);
        opacity: 1;
    }
    100% {
        transform: scale(3);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .fitbit-device {
        width: 150px;
        height: 150px;
    }

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

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

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

    .game-controls {
        flex-direction: column;
        align-items: center;
    }

    .tab-button {
        width: 200px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    .fitbit-device {
        width: 120px;
        height: 120px;
    }

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

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