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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1a3e 100%);
    color: #ffffff;
    min-height: 100vh;
    padding: 20px;
}

.game-container {
    max-width: 800px;
    margin: 0 auto;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 2px solid rgba(138, 43, 226, 0.3);
}

header h1 {
    font-size: 2em;
    text-shadow: 0 0 20px rgba(138, 43, 226, 0.8);
    letter-spacing: 2px;
}

/* Stats Panel */
.stats-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.08);
    padding: 15px;
    border-radius: 10px;
    border: 1px solid rgba(138, 43, 226, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-label {
    font-size: 1em;
    opacity: 0.8;
}

.stat-value {
    font-size: 1.5em;
    font-weight: bold;
    color: #00ff88;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

/* Resource-specific stat styling */
.crystal-stat {
    border-color: rgba(138, 43, 226, 0.5);
}

.energy-stat {
    border-color: rgba(255, 215, 0, 0.5);
    background: rgba(255, 215, 0, 0.05);
}

.gem-stat {
    border-color: rgba(0, 255, 255, 0.5);
    background: rgba(0, 255, 255, 0.05);
}

.stat-max {
    font-size: 0.8em;
    opacity: 0.7;
    margin-left: 5px;
}

/* Mining Area */
.mining-area {
    text-align: center;
    margin: 40px 0;
    position: relative;
}

.asteroid {
    width: 200px;
    height: 200px;
    font-size: 100px;
    background: radial-gradient(circle, #4a4a6a 0%, #2a2a4a 100%);
    border: 4px solid #8a2be2;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.1s ease;
    box-shadow: 0 0 30px rgba(138, 43, 226, 0.6);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.asteroid:hover {
    transform: scale(1.05);
    box-shadow: 0 0 50px rgba(138, 43, 226, 0.9);
}

.asteroid:active {
    transform: scale(0.95);
}

.click-text {
    font-size: 14px;
    margin-top: 10px;
    color: #00ff88;
    font-weight: bold;
}

#floatingNumbers {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-number {
    position: absolute;
    font-size: 24px;
    font-weight: bold;
    color: #00ff88;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.8);
    animation: floatUp 1s ease-out forwards;
    pointer-events: none;
}

@keyframes floatUp {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-100px);
    }
}

/* Resource Info */
.resource-info {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(138, 43, 226, 0.3);
    border-radius: 10px;
    padding: 15px;
    margin: 20px 0;
    display: grid;
    gap: 8px;
}

.info-item {
    font-size: 0.9em;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-item strong {
    color: #00ff88;
}

/* Upgrades Section */
.upgrades-section {
    margin: 40px 0;
}

.upgrades-section h2 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.8em;
    color: #8a2be2;
    text-shadow: 0 0 15px rgba(138, 43, 226, 0.6);
}

.upgrades-container {
    display: grid;
    gap: 15px;
}

.upgrade-card {
    background: rgba(255, 255, 255, 0.08);
    padding: 20px;
    border-radius: 10px;
    border: 2px solid rgba(138, 43, 226, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.upgrade-card:hover {
    border-color: rgba(138, 43, 226, 0.6);
    background: rgba(255, 255, 255, 0.12);
}

.upgrade-info {
    flex: 1;
}

.upgrade-name {
    font-size: 1.3em;
    font-weight: bold;
    margin-bottom: 5px;
    color: #ffffff;
}

.upgrade-description {
    font-size: 0.9em;
    opacity: 0.7;
    margin-bottom: 5px;
}

.upgrade-owned {
    font-size: 0.85em;
    color: #00ff88;
}

.upgrade-buy {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.upgrade-cost {
    display: flex;
    flex-direction: column;
    gap: 5px;
    align-items: flex-end;
}

.cost-item {
    font-size: 1em;
}

.cost-energy {
    color: #ffd700;
}

.cost-gem {
    color: #00ffff;
}

.cost-insufficient {
    opacity: 0.5;
    text-decoration: line-through;
}

.buy-btn {
    padding: 10px 25px;
    font-size: 1em;
    font-weight: bold;
    background: linear-gradient(135deg, #8a2be2 0%, #4a0e78 100%);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.buy-btn:hover {
    background: linear-gradient(135deg, #9d3ef5 0%, #5a1e88 100%);
    transform: scale(1.05);
}

.buy-btn:active {
    transform: scale(0.95);
}

.buy-btn:disabled {
    background: #555;
    cursor: not-allowed;
    opacity: 0.5;
}

/* Tier Headers */
.tier-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 30px 0 15px 0;
}

.tier-badge {
    background: linear-gradient(135deg, #8a2be2 0%, #4a0e78 100%);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9em;
    letter-spacing: 1px;
    box-shadow: 0 0 15px rgba(138, 43, 226, 0.5);
    white-space: nowrap;
}

.tier-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(to right, rgba(138, 43, 226, 0.5), transparent);
}

/* Upgrade Cards - Tier-based styling */
.upgrade-card[data-tier="1"] {
    border-color: rgba(138, 43, 226, 0.3);
}

.upgrade-card[data-tier="2"] {
    border-color: rgba(0, 191, 255, 0.4);
    background: rgba(0, 191, 255, 0.05);
}

.upgrade-card[data-tier="3"] {
    border-color: rgba(255, 215, 0, 0.4);
    background: rgba(255, 215, 0, 0.05);
}

.upgrade-card[data-tier="4"] {
    border-color: rgba(255, 69, 0, 0.4);
    background: rgba(255, 69, 0, 0.05);
}

.upgrade-card[data-tier="5"] {
    border-color: rgba(255, 0, 255, 0.5);
    background: rgba(255, 0, 255, 0.08);
    box-shadow: 0 0 20px rgba(255, 0, 255, 0.3);
}

/* Footer */
footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.action-btn {
    padding: 12px 30px;
    font-size: 1em;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(138, 43, 226, 0.5);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.action-btn:hover {
    background: rgba(138, 43, 226, 0.3);
    border-color: rgba(138, 43, 226, 0.8);
}

/* Save Notification - Minimal Icon Version */
.save-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(0, 255, 136, 0.2);
    border: 2px solid rgba(0, 255, 136, 0.4);
    color: #00ff88;
    padding: 10px;
    border-radius: 50%;
    font-size: 1.5em;
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.4);
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.save-notification.show {
    opacity: 1;
    transform: scale(1);
}

/* Offline Earnings Modal */
.offline-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.offline-modal.show {
    opacity: 1;
    pointer-events: all;
}

.offline-content {
    background: linear-gradient(135deg, #1a1a3e 0%, #2a2a5e 100%);
    border: 3px solid #8a2be2;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    max-width: 500px;
    box-shadow: 0 0 50px rgba(138, 43, 226, 0.8);
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.offline-content h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
    color: #8a2be2;
    text-shadow: 0 0 20px rgba(138, 43, 226, 0.8);
}

.offline-text {
    font-size: 1.2em;
    margin-bottom: 30px;
    opacity: 0.9;
}

.offline-earnings {
    background: rgba(0, 255, 136, 0.1);
    border: 2px solid rgba(0, 255, 136, 0.5);
    border-radius: 15px;
    padding: 30px;
    margin: 30px 0;
}

.earnings-label {
    font-size: 1em;
    opacity: 0.8;
    margin-bottom: 10px;
}

.earnings-amount {
    font-size: 3em;
    font-weight: bold;
    color: #00ff88;
    text-shadow: 0 0 20px rgba(0, 255, 136, 0.8);
}

.claim-btn {
    padding: 15px 50px;
    font-size: 1.3em;
    font-weight: bold;
    background: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    color: #000;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
}

.claim-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.8);
}

.claim-btn:active {
    transform: scale(0.95);
}

/* Unlock Notification */
.unlock-notification {
    position: fixed;
    top: 80px;
    right: 20px;
    background: linear-gradient(135deg, #ffd700 0%, #ff8c00 100%);
    color: #000;
    padding: 20px 25px;
    border-radius: 15px;
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.8);
    z-index: 3000;
    display: flex;
    align-items: center;
    gap: 15px;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.5s ease;
    max-width: 350px;
}

.unlock-notification.show {
    transform: translateX(0);
    opacity: 1;
}

.unlock-icon {
    font-size: 2em;
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.unlock-text {
    flex: 1;
}

.unlock-text strong {
    display: block;
    font-size: 1.1em;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.unlock-text div {
    font-size: 1em;
    opacity: 0.9;
}

/* Statistics Page */
.stats-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    overflow-y: auto;
    padding: 20px;
}

.stats-page.show {
    opacity: 1;
    pointer-events: all;
}

.stats-content {
    background: linear-gradient(135deg, #1a1a3e 0%, #2a2a5e 100%);
    border: 3px solid #8a2be2;
    border-radius: 20px;
    padding: 30px;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 0 50px rgba(138, 43, 226, 0.8);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.stats-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid rgba(138, 43, 226, 0.5);
}

.stats-header h2 {
    font-size: 2.5em;
    color: #8a2be2;
    text-shadow: 0 0 20px rgba(138, 43, 226, 0.8);
    margin: 0;
}

.close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 1.5em;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: rgba(255, 100, 100, 0.3);
    border-color: rgba(255, 100, 100, 0.8);
    transform: rotate(90deg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.stat-category {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(138, 43, 226, 0.3);
    border-radius: 15px;
    padding: 20px;
}

.stat-category h3 {
    font-size: 1.4em;
    margin-bottom: 15px;
    color: #00ff88;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
    border-bottom: 1px solid rgba(138, 43, 226, 0.3);
    padding-bottom: 10px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-name {
    font-size: 1em;
    opacity: 0.8;
}

.stat-value {
    font-size: 1.2em;
    font-weight: bold;
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

/* Responsive */
@media (max-width: 600px) {
    header h1 {
        font-size: 1.5em;
    }
    
    .asteroid {
        width: 150px;
        height: 150px;
        font-size: 70px;
    }
    
    .stats-panel {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-header h2 {
        font-size: 1.8em;
    }
    
    .stats-content {
        padding: 20px;
    }
    
    footer {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
    }
}

/* ===========================
   VISUAL POLISH & ANIMATIONS
   =========================== */

/* Animated Background Stars */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, white, transparent),
        radial-gradient(1px 1px at 50% 50%, white, transparent),
        radial-gradient(1px 1px at 80% 10%, white, transparent),
        radial-gradient(2px 2px at 90% 60%, white, transparent),
        radial-gradient(1px 1px at 33% 80%, white, transparent),
        radial-gradient(1px 1px at 70% 25%, white, transparent);
    background-size: 200% 200%;
    background-position: 0% 0%;
    animation: twinkle 10s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
    opacity: 0.6;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.8; }
}

/* Asteroid Glow Pulse */
.asteroid {
    animation: asteroidPulse 2s ease-in-out infinite;
}

@keyframes asteroidPulse {
    0%, 100% {
        box-shadow: 0 0 30px rgba(138, 43, 226, 0.6);
    }
    50% {
        box-shadow: 0 0 60px rgba(138, 43, 226, 1);
    }
}

.asteroid.clicking {
    animation: asteroidShake 0.3s ease;
}

@keyframes asteroidShake {
    0%, 100% { transform: translate(0, 0) scale(1); }
    10% { transform: translate(-5px, -5px) scale(1.05); }
    20% { transform: translate(5px, 5px) scale(1.05); }
    30% { transform: translate(-5px, 5px) scale(1.05); }
    40% { transform: translate(5px, -5px) scale(1.05); }
    50% { transform: translate(-3px, -3px) scale(1.05); }
    60% { transform: translate(3px, 3px) scale(1.05); }
    70% { transform: translate(-3px, 3px) scale(1.05); }
    80% { transform: translate(3px, -3px) scale(1.05); }
    90% { transform: translate(-1px, 1px) scale(1.02); }
}

/* Particle Effects */
.particle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: radial-gradient(circle, #00ff88, transparent);
    border-radius: 50%;
    pointer-events: none;
    animation: particleFloat 1s ease-out forwards;
}

@keyframes particleFloat {
    0% {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(var(--tx), var(--ty)) scale(0);
    }
}

.particle.crystal {
    background: radial-gradient(circle, #8a2be2, transparent);
}

.particle.energy {
    background: radial-gradient(circle, #ffd700, transparent);
}

.particle.gem {
    background: radial-gradient(circle, #00ffff, transparent);
}

/* Combo Indicator */
.combo-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3em;
    font-weight: bold;
    color: #ff6600;
    text-shadow: 0 0 20px rgba(255, 102, 0, 1);
    pointer-events: none;
    animation: comboPopup 0.5s ease-out;
    z-index: 100;
}

@keyframes comboPopup {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.5);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.2);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -80%) scale(1);
    }
}

/* Crystal Rain Effect */
.crystal-rain {
    position: absolute;
    width: 4px;
    height: 4px;
    background: #8a2be2;
    border-radius: 50%;
    animation: rainFall 2s linear forwards;
    pointer-events: none;
    box-shadow: 0 0 10px rgba(138, 43, 226, 0.8);
}

@keyframes rainFall {
    0% {
        opacity: 1;
        transform: translateY(0) rotate(0deg);
    }
    100% {
        opacity: 0;
        transform: translateY(300px) rotate(360deg);
    }
}

/* Upgrade Card Entrance */
.upgrade-card {
    animation: slideInUp 0.5s ease-out;
}

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

/* Upgrade Purchase Flash */
.upgrade-card.purchased {
    animation: purchaseFlash 0.5s ease;
}

@keyframes purchaseFlash {
    0%, 100% {
        background: rgba(255, 255, 255, 0.08);
    }
    50% {
        background: rgba(0, 255, 136, 0.3);
        transform: scale(1.02);
    }
}

/* Progress Bar for Upgrades */
.upgrade-progress {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 5px;
}

.upgrade-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #8a2be2, #00ff88);
    border-radius: 2px;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(138, 43, 226, 0.8);
}

/* Stat Counter Animation */
.stat-value {
    transition: all 0.3s ease;
}

.stat-value.increasing {
    animation: statPulse 0.3s ease;
}

@keyframes statPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.15);
        color: #00ffff;
    }
}

/* Screen Shake Effect */
@keyframes screenShake {
    0%, 100% { transform: translate(0, 0); }
    10% { transform: translate(-2px, -2px); }
    20% { transform: translate(2px, 2px); }
    30% { transform: translate(-2px, 2px); }
    40% { transform: translate(2px, -2px); }
    50% { transform: translate(-1px, -1px); }
    60% { transform: translate(1px, 1px); }
    70% { transform: translate(-1px, 1px); }
    80% { transform: translate(1px, -1px); }
    90% { transform: translate(0, 0); }
}

.game-container.shake {
    animation: screenShake 0.5s ease;
}

/* Unlock Animation Enhancement */
.unlock-notification {
    animation: unlockBounce 0.6s ease-out;
}

@keyframes unlockBounce {
    0% {
        transform: translateX(400px) scale(0.5);
        opacity: 0;
    }
    60% {
        transform: translateX(-20px) scale(1.1);
        opacity: 1;
    }
    80% {
        transform: translateX(10px) scale(0.95);
    }
    100% {
        transform: translateX(0) scale(1);
    }
}

/* Tier Badge Glow */
.tier-badge {
    animation: tierGlow 2s ease-in-out infinite;
}

@keyframes tierGlow {
    0%, 100% {
        box-shadow: 0 0 15px rgba(138, 43, 226, 0.5);
    }
    50% {
        box-shadow: 0 0 30px rgba(138, 43, 226, 1);
    }
}

/* Energy Bar Fill Animation */
.energy-stat .stat-value {
    position: relative;
    overflow: hidden;
}

.energy-stat .stat-value::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.3), transparent);
    animation: energyShimmer 2s infinite;
}

@keyframes energyShimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Gem Sparkle */
.gem-stat .stat-value {
    animation: gemSparkle 1.5s ease-in-out infinite;
}

@keyframes gemSparkle {
    0%, 100% {
        text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
    }
    50% {
        text-shadow: 0 0 20px rgba(0, 255, 255, 1), 0 0 30px rgba(0, 255, 255, 0.8);
    }
}

/* Buy Button Pulse When Affordable */
.buy-btn:not(:disabled) {
    animation: buttonPulse 1.5s ease-in-out infinite;
}

@keyframes buttonPulse {
    0%, 100% {
        box-shadow: 0 0 10px rgba(138, 43, 226, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(138, 43, 226, 1);
    }
}

/* Responsive Polish */
@media (max-width: 600px) {
    .particle {
        width: 6px;
        height: 6px;
    }
    
    .combo-indicator {
        font-size: 2em;
    }
}

/* Sound Initialization Notice */
.sound-init-notice {
    background: linear-gradient(135deg, #8a2be2 0%, #4a0e78 100%);
    border: 2px solid #00ff88;
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    margin: 20px 0;
    box-shadow: 0 0 30px rgba(138, 43, 226, 0.6);
    animation: noticePulse 2s ease-in-out infinite;
}

@keyframes noticePulse {
    0%, 100% {
        box-shadow: 0 0 20px rgba(138, 43, 226, 0.6);
    }
    50% {
        box-shadow: 0 0 40px rgba(138, 43, 226, 1);
    }
}

.sound-init-notice p {
    font-size: 1.2em;
    margin-bottom: 15px;
    color: #00ff88;
    font-weight: bold;
}

.init-sound-btn {
    padding: 15px 40px;
    font-size: 1.2em;
    font-weight: bold;
    background: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    color: #000;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
}

.init-sound-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.8);
}

.init-sound-btn:active {
    transform: scale(0.95);
}

.sound-init-notice.hidden {
    display: none;
}


/* ===========================
   HALL OF FAME STYLES
   =========================== */

/* Achievement Notification */
.achievement-notification {
    position: fixed;
    top: 140px;
    right: 20px;
    background: linear-gradient(135deg, #1a1a3e 0%, #2a2a5e 100%);
    border: 3px solid #ffd700;
    border-radius: 15px;
    padding: 20px;
    display: flex;
    gap: 15px;
    align-items: center;
    z-index: 3000;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.5s ease;
    max-width: 400px;
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.8);
}

.achievement-notification.show {
    transform: translateX(0);
    opacity: 1;
}

.achievement-icon {
    font-size: 3em;
    animation: achievementBounce 1s ease-in-out infinite;
}

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

.achievement-details {
    flex: 1;
}

.achievement-title {
    font-size: 0.9em;
    color: #ffd700;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.achievement-name {
    font-size: 1.2em;
    font-weight: bold;
    margin-bottom: 5px;
    color: #ffffff;
}

.achievement-description {
    font-size: 0.9em;
    opacity: 0.8;
    margin-bottom: 5px;
}

.achievement-tier {
    font-size: 0.8em;
    font-weight: bold;
    padding: 3px 8px;
    border-radius: 5px;
    display: inline-block;
    margin-top: 5px;
}

/* Speed Record Notification */
.speed-record-notification {
    position: fixed;
    top: 200px;
    right: 20px;
    background: linear-gradient(135deg, #ff6600 0%, #ff3300 100%);
    border: 3px solid #ffff00;
    border-radius: 15px;
    padding: 20px;
    display: flex;
    gap: 15px;
    align-items: center;
    z-index: 3000;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.5s ease;
    max-width: 350px;
    box-shadow: 0 0 30px rgba(255, 102, 0, 0.8);
}

.speed-record-notification.show {
    transform: translateX(0);
    opacity: 1;
}

.record-icon {
    font-size: 3em;
    animation: recordSpin 1s linear infinite;
}

@keyframes recordSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.record-text {
    flex: 1;
}

.record-title {
    font-size: 0.9em;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.record-milestone {
    font-size: 1.2em;
    font-weight: bold;
    margin-bottom: 5px;
}

.record-time {
    font-size: 1.5em;
    font-weight: bold;
    color: #ffff00;
}

/* Hall of Fame Page */
.hall-of-fame-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    overflow-y: auto;
    padding: 20px;
}

.hall-of-fame-page.show {
    opacity: 1;
    pointer-events: all;
}

.hall-of-fame-content {
    background: linear-gradient(135deg, #1a1a3e 0%, #2a2a5e 100%);
    border: 3px solid #ffd700;
    border-radius: 20px;
    padding: 30px;
    max-width: 1000px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 0 50px rgba(255, 215, 0, 0.8);
    animation: slideIn 0.3s ease;
}

.hall-of-fame-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(255, 215, 0, 0.5);
}

.hall-of-fame-header h2 {
    font-size: 2.5em;
    color: #ffd700;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.8);
    margin: 0;
}

/* Tabs */
.hall-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.hall-tab {
    flex: 1;
    min-width: 150px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 10px;
    color: white;
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hall-tab:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: rgba(255, 215, 0, 0.6);
}

.hall-tab.active {
    background: linear-gradient(135deg, #ffd700 0%, #ff8c00 100%);
    border-color: #ffd700;
    color: #000;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.6);
}

.hall-tab-content {
    display: none;
}

.hall-tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* Prestige Summary */
.prestige-summary {
    background: rgba(255, 215, 0, 0.1);
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 25px;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 15px;
}

.prestige-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.prestige-label {
    font-size: 0.9em;
    opacity: 0.8;
}

.prestige-value {
    font-size: 1.8em;
    font-weight: bold;
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.6);
}

/* Achievements Grid */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.achievement-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    transition: all 0.3s ease;
}

.achievement-card.unlocked {
    border-color: #ffd700;
    background: rgba(255, 215, 0, 0.1);
}

.achievement-card.locked {
    opacity: 0.4;
    filter: grayscale(1);
}

.achievement-card:hover {
    transform: scale(1.05);
}

.achievement-card-icon {
    font-size: 3em;
    margin-bottom: 10px;
}

.achievement-card-name {
    font-size: 1em;
    font-weight: bold;
    margin-bottom: 5px;
    color: #ffd700;
}

.achievement-card-description {
    font-size: 0.85em;
    opacity: 0.8;
    margin-bottom: 10px;
}

.achievement-card-tier {
    font-size: 0.75em;
    padding: 3px 8px;
    border-radius: 5px;
    display: inline-block;
    font-weight: bold;
    text-transform: uppercase;
}

.tier-bronze { background: #cd7f32; color: #000; }
.tier-silver { background: #c0c0c0; color: #000; }
.tier-gold { background: #ffd700; color: #000; }
.tier-platinum { background: #e5e4e2; color: #000; }

/* Speed Records */
.records-container h3 {
    color: #ffd700;
    margin-bottom: 20px;
    font-size: 1.5em;
}

.records-list {
    display: grid;
    gap: 15px;
}

.record-item {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 10px;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.record-item.completed {
    border-color: #00ff88;
    background: rgba(0, 255, 136, 0.1);
}

.record-name {
    font-size: 1.1em;
    font-weight: bold;
}

.record-value {
    font-size: 1.3em;
    color: #ffd700;
    font-weight: bold;
}

.record-pending {
    color: #888;
    font-style: italic;
}

/* Best Runs */
.runs-container h3 {
    color: #ffd700;
    margin-bottom: 20px;
    font-size: 1.5em;
}

.current-run-info {
    background: rgba(138, 43, 226, 0.2);
    border: 2px solid rgba(138, 43, 226, 0.5);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 25px;
}

.current-run-info h4 {
    color: #8a2be2;
    margin-bottom: 15px;
    font-size: 1.3em;
}

.run-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.run-stat {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 5px;
}

.run-stat span:last-child {
    color: #00ff88;
    font-weight: bold;
}

.runs-list {
    display: grid;
    gap: 15px;
}

.run-item {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 10px;
    padding: 15px;
}

.run-item.rank-1 { border-color: #ffd700; background: rgba(255, 215, 0, 0.1); }
.run-item.rank-2 { border-color: #c0c0c0; background: rgba(192, 192, 192, 0.1); }
.run-item.rank-3 { border-color: #cd7f32; background: rgba(205, 127, 50, 0.1); }

.run-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: bold;
}

.run-rank {
    font-size: 1.5em;
    color: #ffd700;
}

.run-crystals {
    font-size: 1.3em;
    color: #00ff88;
}

.run-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    font-size: 0.9em;
    opacity: 0.8;
}

/* Prestige Tab */
.prestige-container {
    max-width: 700px;
    margin: 0 auto;
}

.prestige-info h3 {
    color: #ffd700;
    text-align: center;
    margin-bottom: 15px;
    font-size: 2em;
}

.prestige-info p {
    text-align: center;
    font-size: 1.1em;
    margin-bottom: 25px;
    opacity: 0.9;
}

.prestige-stats-box {
    background: rgba(255, 215, 0, 0.1);
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 25px;
}

.prestige-stat-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.prestige-stat-row:last-child {
    border-bottom: none;
}

.highlight {
    color: #ffd700;
    font-weight: bold;
    font-size: 1.2em;
}

.prestige-requirements {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 25px;
}

.prestige-requirements h4 {
    margin-bottom: 15px;
    color: #00ff88;
}

.prestige-requirements ul {
    list-style: none;
    padding: 0;
}

.prestige-requirements li {
    padding: 8px 0;
    font-size: 1.1em;
}

.prestige-btn {
    width: 100%;
    padding: 20px;
    font-size: 1.5em;
    font-weight: bold;
    background: linear-gradient(135deg, #ffd700 0%, #ff8c00 100%);
    color: #000;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 25px;
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.6);
}

.prestige-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 50px rgba(255, 215, 0, 0.9);
}

.prestige-btn:active {
    transform: scale(0.95);
}

.prestige-btn:disabled {
    background: #555;
    color: #888;
    cursor: not-allowed;
    box-shadow: none;
}

.prestige-bonuses {
    background: rgba(0, 255, 136, 0.1);
    border: 2px solid rgba(0, 255, 136, 0.3);
    border-radius: 10px;
    padding: 20px;
}

.prestige-bonuses h4 {
    margin-bottom: 15px;
    color: #00ff88;
}

.no-bonuses {
    text-align: center;
    opacity: 0.7;
    font-style: italic;
}

/* Responsive */
@media (max-width: 600px) {
    .hall-tabs {
        flex-direction: column;
    }
    
    .hall-tab {
        width: 100%;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .run-details {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   MOBILE OPTIMIZATIONS
   =========================== */

/* Prevent text selection on mobile */
* {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

/* Allow text selection for inputs only */
input, textarea {
    -webkit-user-select: text;
    user-select: text;
}

/* Smooth scrolling */
html {
    -webkit-overflow-scrolling: touch;
}

/* Larger touch targets for mobile */
@media (max-width: 768px) {
    /* Body adjustments */
    body {
        padding: 10px;
        font-size: 14px;
    }
    
    /* Header */
    header {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    header h1 {
        font-size: 1.4em;
        letter-spacing: 1px;
    }
    
    /* Stats Panel - 3 COLUMNS × 2 ROWS on mobile */
    .stats-panel {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
        margin-bottom: 20px;
    }
    
    .stat-item {
        padding: 8px 5px;
        flex-direction: column;
        text-align: center;
        gap: 4px;
        justify-content: center;
        min-height: 70px;
    }
    
    .stat-label {
        font-size: 0.65em;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        width: 100%;
        line-height: 1.2;
    }
    
    .stat-value {
        font-size: 1em;
        font-weight: bold;
    }
    
    .stat-max {
        font-size: 0.65em;
        margin-left: 0;
        display: block;
        margin-top: 2px;
    }
    
    /* Mining Area - Optimized size */
    .mining-area {
        margin: 25px 0;
    }
    
    .asteroid {
        width: 160px;
        height: 160px;
        font-size: 75px;
        position: relative;
    }
    
    /* Add invisible larger touch area */
    .asteroid::before {
        content: '';
        position: absolute;
        top: -20px;
        left: -20px;
        right: -20px;
        bottom: -20px;
        border-radius: 50%;
    }
    
    .click-text {
        font-size: 11px;
        margin-top: 8px;
    }
    
    /* Resource Info - Compact grid */
    .resource-info {
        padding: 10px;
        margin: 15px 0;
        gap: 6px;
    }
    
    .info-item {
        font-size: 0.8em;
        gap: 5px;
    }
    
    .info-item strong {
        display: block;
    }
    
    /* Upgrades Section */
    .upgrades-section {
        margin: 25px 0;
    }
    
    .upgrades-section h2 {
        font-size: 1.4em;
        margin-bottom: 12px;
    }
    
    /* Upgrade Cards - Compact horizontal layout */
    .upgrade-card {
        flex-direction: row;
        padding: 12px;
        gap: 10px;
        align-items: center;
    }
    
    .upgrade-info {
        flex: 1;
        min-width: 0;
    }
    
    .upgrade-name {
        font-size: 1em;
        margin-bottom: 3px;
    }
    
    .upgrade-description {
        font-size: 0.75em;
        margin-bottom: 3px;
    }
    
    .upgrade-owned {
        font-size: 0.75em;
    }
    
    .upgrade-buy {
        flex-direction: column;
        align-items: flex-end;
        gap: 8px;
        min-width: fit-content;
    }
    
    .upgrade-cost {
        flex-direction: column;
        gap: 3px;
        align-items: flex-end;
    }
    
    .cost-item {
        font-size: 0.8em;
        white-space: nowrap;
    }
    
    /* Larger buy buttons for easier tapping */
    .buy-btn {
        padding: 10px 20px;
        font-size: 0.9em;
        min-width: 70px;
        white-space: nowrap;
    }
    
    /* Tier Headers */
    .tier-header {
        margin: 18px 0 10px 0;
    }
    
    .tier-badge {
        padding: 5px 12px;
        font-size: 0.8em;
    }
    
    /* Footer - 3 columns × 2 rows on mobile */
    footer {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
        padding: 12px 10px;
        margin-top: 25px;
    }
    
    .action-btn {
        padding: 10px 5px;
        font-size: 0.75em;
        white-space: normal;
        line-height: 1.2;
        min-height: 44px;
    }
    
    /* Make Reset button span 3 columns to be on its own row */
    #resetBtn {
        grid-column: 1 / -1;
        background: rgba(255, 100, 100, 0.2);
        border-color: rgba(255, 100, 100, 0.5);
    }
    
    #resetBtn:hover {
        background: rgba(255, 100, 100, 0.3);
        border-color: rgba(255, 100, 100, 0.8);
    }
    
    /* Floating Numbers - Slightly smaller */
    .floating-number {
        font-size: 18px;
    }
    
    /* Particles - Fewer on mobile for performance */
    .particle {
        width: 5px;
        height: 5px;
    }
    
    /* Combo Indicator */
    .combo-indicator {
        font-size: 1.8em;
    }
    
    /* Notifications - Adjust position and size */
    .save-notification {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
        font-size: 1.2em;
    }
    
    .unlock-notification {
        top: 55px;
        right: 10px;
        left: 10px;
        max-width: none;
        padding: 12px;
    }
    
    .unlock-icon {
        font-size: 1.8em;
    }
    
    .unlock-text strong {
        font-size: 0.85em;
    }
    
    .unlock-text div {
        font-size: 0.85em;
    }
    
    /* Achievement Notification */
    .achievement-notification {
        top: 110px;
        right: 10px;
        left: 10px;
        max-width: none;
        padding: 12px;
        gap: 10px;
    }
    
    .achievement-icon {
        font-size: 2em;
    }
    
    .achievement-title {
        font-size: 0.75em;
    }
    
    .achievement-name {
        font-size: 0.95em;
    }
    
    .achievement-description {
        font-size: 0.8em;
    }
    
    /* Speed Record Notification */
    .speed-record-notification {
        top: 170px;
        right: 10px;
        left: 10px;
        max-width: none;
        padding: 12px;
    }
    
    .record-icon {
        font-size: 2em;
    }
    
    .record-title {
        font-size: 0.75em;
    }
    
    .record-milestone {
        font-size: 0.95em;
    }
    
    .record-time {
        font-size: 1.2em;
    }
    
    /* Offline Modal */
    .offline-content {
        padding: 20px;
        max-width: 90%;
    }
    
    .offline-content h2 {
        font-size: 1.8em;
    }
    
    .offline-text {
        font-size: 0.95em;
    }
    
    .earnings-amount {
        font-size: 2.2em;
    }
    
    .claim-btn {
        padding: 12px 30px;
        font-size: 1em;
    }
    
    /* Statistics Page */
    .stats-content {
        padding: 15px;
        max-width: 100%;
    }
    
    .stats-header {
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 15px;
    }
    
    .stats-header h2 {
        font-size: 1.4em;
        flex: 1;
        min-width: 150px;
    }
    
    .close-btn {
        width: 35px;
        height: 35px;
        font-size: 1.3em;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .stat-category {
        padding: 10px;
    }
    
    .stat-category h3 {
        font-size: 0.95em;
        margin-bottom: 8px;
        padding-bottom: 6px;
    }
    
    .stat-row {
        padding: 5px 0;
        display: grid;
        grid-template-columns: 1fr auto;
        gap: 10px;
        text-align: left;
        align-items: center;
    }
    
    .stat-name {
        font-size: 0.75em;
        opacity: 0.9;
    }
    
    .stat-value {
        font-size: 0.9em;
        text-align: right;
    }
    
    /* Hall of Fame Page */
    .hall-of-fame-content {
        padding: 15px;
        max-width: 100%;
    }
    
    .hall-of-fame-header {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .hall-of-fame-header h2 {
        font-size: 1.5em;
        flex: 1;
        min-width: 200px;
    }
    
    /* Hall of Fame Tabs - 3 columns */
    .hall-tabs {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }
    
    .hall-tab {
        padding: 10px 5px;
        font-size: 0.75em;
        white-space: normal;
        line-height: 1.2;
    }
    
    /* Make Prestige tab span full width on its own row for emphasis */
    .hall-tab:nth-child(4) {
        grid-column: 1 / -1;
    }
    
    /* Prestige Summary - 3 columns */
    .prestige-summary {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        padding: 8px;
        gap: 8px;
    }
    
    .prestige-stat {
        gap: 3px;
    }
    
    .prestige-label {
        font-size: 0.7em;
        line-height: 1.1;
    }
    
    .prestige-value {
        font-size: 1.1em;
    }
    
    /* Achievements Grid - 3 columns */
    .achievements-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
    
    .achievement-card {
        padding: 8px;
    }
    
    .achievement-card-icon {
        font-size: 2em;
        margin-bottom: 4px;
    }
    
    .achievement-card-name {
        font-size: 0.75em;
        margin-bottom: 3px;
        line-height: 1.1;
    }
    
    .achievement-card-description {
        font-size: 0.65em;
        margin-bottom: 4px;
        line-height: 1.2;
    }
    
    .achievement-card-tier {
        font-size: 0.6em;
        padding: 2px 5px;
    }
    
    /* Speed Records */
    .records-container h3 {
        font-size: 1.2em;
        margin-bottom: 12px;
    }
    
    .record-item {
        padding: 10px;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .record-name {
        font-size: 0.85em;
        flex: 1;
    }
    
    .record-value {
        font-size: 1em;
        white-space: nowrap;
        margin-left: 10px;
    }
    
    .record-pending {
        font-size: 0.8em;
    }
    
    /* Best Runs */
    .runs-container h3 {
        font-size: 1.2em;
        margin-bottom: 12px;
    }
    
    .current-run-info {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    .current-run-info h4 {
        font-size: 1.1em;
        margin-bottom: 10px;
    }
    
    .run-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .run-stat {
        padding: 8px;
        font-size: 0.8em;
        flex-direction: column;
        gap: 3px;
        text-align: center;
    }
    
    .run-stat span:first-child {
        font-size: 0.85em;
        opacity: 0.8;
    }
    
    .run-stat span:last-child {
        font-size: 1em;
    }
    
    .run-item {
        padding: 10px;
    }
    
    .run-header {
        margin-bottom: 8px;
    }
    
    .run-rank {
        font-size: 1.2em;
    }
    
    .run-crystals {
        font-size: 1em;
    }
    
    .run-details {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
        font-size: 0.75em;
    }
    
    .run-details > div {
        display: flex;
        flex-direction: column;
        gap: 2px;
        text-align: center;
        padding: 5px;
        background: rgba(255, 255, 255, 0.03);
        border-radius: 3px;
    }
    
    /* Prestige Tab */
    .prestige-container {
        max-width: 100%;
    }
    
    .prestige-info h3 {
        font-size: 1.5em;
        margin-bottom: 10px;
    }
    
    .prestige-info p {
        font-size: 0.9em;
        margin-bottom: 15px;
    }
    
    .prestige-stats-box {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    .prestige-stat-row {
        padding: 8px 0;
        font-size: 0.85em;
    }
    
    .highlight {
        font-size: 1em;
    }
    
    .prestige-requirements {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    .prestige-requirements h4 {
        font-size: 1em;
        margin-bottom: 10px;
    }
    
    .prestige-requirements li {
        font-size: 0.9em;
        padding: 5px 0;
    }
    
    .prestige-btn {
        padding: 15px;
        font-size: 1.1em;
        margin-bottom: 15px;
    }
    
    .prestige-bonuses {
        padding: 12px;
    }
    
    .prestige-bonuses h4 {
        font-size: 1em;
        margin-bottom: 10px;
    }
    
    .prestige-bonuses > div > div {
        font-size: 0.85em;
        padding: 8px;
    }
    
    /* Sound Init Notice */
    .sound-init-notice {
        padding: 12px;
        margin: 12px 0;
    }
    
    .sound-init-notice p {
        font-size: 0.95em;
        margin-bottom: 10px;
    }
    
    .init-sound-btn {
        padding: 12px 25px;
        font-size: 1em;
    }
}

/* Extra small devices - fallback to 2 columns or 1 column */
@media (max-width: 374px) {
    .stats-panel {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hall-tabs {
        grid-template-columns: repeat(2, 1fr);
    }
    
    footer {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Landscape mode - keep 3 columns */
@media (max-height: 500px) and (orientation: landscape) {
    .stats-panel {
        grid-template-columns: repeat(3, 1fr);
        gap: 5px;
    }
    
    .stat-item {
        padding: 6px 4px;
        min-height: 60px;
    }
    
    .stat-label {
        font-size: 0.6em;
    }
    
    .stat-value {
        font-size: 0.9em;
    }
}

/* Prevent double-tap zoom on iOS */
button, a, .asteroid {
    touch-action: manipulation;
}

/* Better scrolling on mobile */
.hall-of-fame-content,
.stats-content,
.offline-content {
    overscroll-behavior: contain;
}

/* Hide scrollbar but keep functionality */
.hall-of-fame-content::-webkit-scrollbar,
.stats-content::-webkit-scrollbar {
    width: 4px;
}

.hall-of-fame-content::-webkit-scrollbar-thumb,
.stats-content::-webkit-scrollbar-thumb {
    background: rgba(138, 43, 226, 0.5);
    border-radius: 4px;
}

/* Performance optimization for animations on mobile */
@media (max-width: 768px) {
    .crystal-rain {
        animation-duration: 1.5s;
    }
    
    body::before {
        animation: none;
        opacity: 0.3;
    }
    
    .asteroid {
        animation: none;
        box-shadow: 0 0 20px rgba(138, 43, 226, 0.6);
    }
    
    .tier-badge {
        animation: none;
        box-shadow: 0 0 10px rgba(138, 43, 226, 0.4);
    }
    
    .buy-btn:not(:disabled) {
        animation: none;
        box-shadow: none;
    }
}

/* Improve tap targets */
@media (max-width: 768px) {
    .buy-btn,
    .action-btn,
    .hall-tab,
    .close-btn,
    .claim-btn,
    .prestige-btn,
    .init-sound-btn {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}