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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-family: 'Courier New', monospace;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.game-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
    padding: 20px;
}

.game-container {
    position: relative;
    max-width: 800px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    overflow: hidden;
}

#gameCanvas {
    display: block;
    width: 100%;
    height: auto;
    background: #5c94fc;
}

/* HUD */
.hud {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(180deg, #000 0%, #1a1a1a 100%);
    color: #fff;
    padding: 15px 20px;
    border-bottom: 4px solid #FFD700;
}

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

.hud-label {
    font-size: 12px;
    color: #FFD700;
    font-weight: bold;
}

.hud-value {
    font-size: 20px;
    font-weight: bold;
    color: #fff;
}

.pause-btn {
    background: #E52521;
    color: #fff;
    border: 2px solid #fff;
    padding: 8px 15px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.2s;
}

.pause-btn:hover {
    background: #FF3333;
    transform: scale(1.1);
}

/* Mobile Controls */
.mobile-controls {
    position: fixed;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    max-width: 400px;
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    pointer-events: none;
    z-index: 1000;
}

.mobile-left-controls {
    display: flex;
    gap: 15px;
    align-items: center;
}

.mobile-right-controls {
    display: flex;
    align-items: center;
}

.mobile-btn {
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    border: 3px solid #fff;
    border-radius: 50%;
    width: 70px;
    height: 70px;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    user-select: none;
    pointer-events: all;
    transition: all 0.2s;
    touch-action: manipulation;
}

.mobile-btn:active {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0.95);
}

.jump-btn {
    width: 80px;
    height: 80px;
    font-size: 30px;
    background: rgba(220, 20, 60, 0.8);
    border-color: #fff;
}

.jump-btn:active {
    background: rgba(255, 69, 0, 0.9);
}

/* Player Name Section */
.player-name-section {
    margin: 20px 0;
    text-align: center;
}

.player-name-section h3 {
    color: #FFD700;
    margin-bottom: 15px;
    font-size: 20px;
}

.player-name-section input {
    padding: 12px 15px;
    font-size: 18px;
    border: 3px solid #FFD700;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.95);
    color: #000;
    margin-bottom: 15px;
    text-align: center;
    width: 250px;
    max-width: 80%;
}

.player-name-section input:focus {
    outline: none;
    box-shadow: 0 0 10px #FFD700;
}

/* Leaderboard Styles */

.leaderboard-container {
    max-height: 400px;
    overflow-y: auto;
    margin: 20px 0;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
}

.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.leaderboard-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 15px 20px;
    border-radius: 8px;
    border-left: 4px solid #FFD700;
}

.leaderboard-entry.rank-1 {
    border-left-color: #FFD700;
    background: rgba(255, 215, 0, 0.2);
}

.leaderboard-entry.rank-2 {
    border-left-color: #C0C0C0;
    background: rgba(192, 192, 192, 0.2);
}

.leaderboard-entry.rank-3 {
    border-left-color: #CD7F32;
    background: rgba(205, 127, 50, 0.2);
}

.leaderboard-rank {
    font-size: 24px;
    font-weight: bold;
    color: #FFD700;
    min-width: 40px;
}

.leaderboard-name {
    flex: 1;
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    margin: 0 15px;
}

.leaderboard-score {
    font-size: 20px;
    font-weight: bold;
    color: #FFD700;
}

.leaderboard-empty {
    text-align: center;
    color: #ccc;
    font-style: italic;
    padding: 40px;
}

/* Mobile Responsive Design */
@media (max-width: 768px), (hover: none) {
    body {
        overflow: auto;
    }
    
    .game-wrapper {
        padding: 10px;
        height: 100vh;
        align-items: flex-start;
        padding-top: 10px;
    }
    
    .game-container {
        width: 100%;
        max-width: none;
        height: calc(100vh - 20px);
        display: flex;
        flex-direction: column;
    }
    
    #gameCanvas {
        height: calc(100vh - 180px) !important;
        width: 100% !important;
        object-fit: contain;
        background: #5c94fc;
    }
    
    .hud {
        padding: 10px 15px;
        font-size: 14px;
        flex-shrink: 0;
    }
    
    .hud-value {
        font-size: 16px;
    }
    
    .mobile-controls {
        display: flex;
        bottom: 60px;
    }
    
    .mobile-btn {
        width: 60px;
        height: 60px;
        font-size: 20px;
    }
    
    .jump-btn {
        width: 70px;
        height: 70px;
        font-size: 24px;
    }
}

/* Screens */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.95);
    color: #fff;
    z-index: 100;
    padding: 20px;
    overflow-y: auto;
}

.screen.hidden {
    display: none;
}

.game-title {
    font-size: 56px;
    color: #E52521;
    text-shadow: 4px 4px 0 #000, -2px -2px 0 #FFD700;
    margin-bottom: 10px;
    text-align: center;
    line-height: 1.2;
}

.subtitle {
    font-size: 28px;
    color: #FFD700;
}

.controls-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: center;
}

.controls-info h3 {
    color: #FFD700;
    margin-bottom: 15px;
    font-size: 20px;
}

.controls-info p {
    margin: 8px 0;
    font-size: 16px;
}

/* Image Upload */
.image-upload-section {
    margin: 20px 0;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    max-width: 500px;
    width: 100%;
}

.image-upload-section h3 {
    color: #FFD700;
    margin-bottom: 15px;
    font-size: 18px;
    text-align: center;
}

.upload-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.upload-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.upload-item label {
    color: #fff;
    font-size: 14px;
    font-weight: bold;
}

.upload-item input[type="file"] {
    padding: 8px;
    background: #fff;
    border: 2px solid #E52521;
    border-radius: 5px;
    font-size: 12px;
    cursor: pointer;
}

/* Buttons */
.game-btn {
    margin: 10px;
    padding: 15px 50px;
    font-size: 24px;
    background: #E52521;
    color: #fff;
    border: 4px solid #fff;
    cursor: pointer;
    font-weight: bold;
    font-family: 'Courier New', monospace;
    border-radius: 10px;
    transition: all 0.3s;
    box-shadow: 0 4px 0 #8B0000;
}

.game-btn:hover {
    background: #FF3333;
    transform: translateY(-2px);
    box-shadow: 0 6px 0 #8B0000;
}

.game-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #8B0000;
}

.game-btn.secondary {
    background: #2B60DE;
    box-shadow: 0 4px 0 #1a3d8f;
}

.game-btn.secondary:hover {
    background: #3d7aff;
    box-shadow: 0 6px 0 #1a3d8f;
}

/* Stats */
.stats {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 10px;
    margin: 20px 0;
    min-width: 300px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    margin: 15px 0;
    font-size: 20px;
}

.stat-label {
    color: #FFD700;
    font-weight: bold;
}

.stat-value {
    color: #fff;
    font-weight: bold;
}

/* Mobile Controls */
.mobile-controls {
    display: none;
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    gap: 20px;
    z-index: 50;
}

.mobile-controls.active {
    display: flex;
}

.control-btn {
    width: 70px;
    height: 70px;
    background: rgba(229, 37, 33, 0.8);
    color: #fff;
    border: 3px solid #fff;
    border-radius: 50%;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    touch-action: manipulation;
    transition: all 0.1s;
}

.control-btn:active {
    background: rgba(255, 51, 51, 0.9);
    transform: scale(0.95);
}

.jump-btn {
    width: 90px;
    height: 90px;
    font-size: 16px;
}

/* Loading */
.loader {
    border: 8px solid rgba(255, 255, 255, 0.3);
    border-top: 8px solid #FFD700;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.version {
    position: absolute;
    bottom: 10px;
    right: 10px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        overflow: hidden;
    }
    
    .game-wrapper {
        padding: 0;
        height: 100vh;
        height: 100dvh; /* Dynamic viewport height for mobile */
    }
    
    .game-container {
        border-radius: 0;
        max-width: 100%;
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    
    .hud {
        padding: 8px 10px;
        flex-shrink: 0;
    }
    
    .hud-item {
        gap: 2px;
    }
    
    .hud-label {
        font-size: 9px;
    }
    
    .hud-value {
        font-size: 14px;
    }
    
    .pause-btn {
        padding: 6px 12px;
        font-size: 16px;
    }
    
    #gameCanvas {
        flex: 1;
        width: 100%;
        height: auto;
        object-fit: contain;
    }
    
    .game-title {
        font-size: 36px;
        margin-bottom: 15px;
    }
    
    .subtitle {
        font-size: 20px;
    }
    
    .game-btn {
        padding: 12px 30px;
        font-size: 18px;
        margin: 8px;
    }
    
    .controls-info {
        padding: 15px;
        margin: 15px 0;
        max-width: 90%;
    }
    
    .controls-info h3 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .controls-info p {
        font-size: 13px;
        margin: 6px 0;
    }
    
    .image-upload-section {
        padding: 15px;
        margin: 15px 0;
        max-width: 90%;
    }
    
    .image-upload-section h3 {
        font-size: 16px;
    }
    
    .upload-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .upload-item label {
        font-size: 13px;
    }
    
    .upload-item input[type="file"] {
        font-size: 11px;
        padding: 6px;
    }
    
    .stats {
        padding: 20px;
        min-width: auto;
        width: 90%;
    }
    
    .stat-item {
        font-size: 16px;
        margin: 10px 0;
    }
    
    .mobile-controls {
        bottom: 10px;
        gap: 15px;
    }
    
    .control-btn {
        width: 60px;
        height: 60px;
        font-size: 20px;
        border-width: 2px;
    }
    
    .jump-btn {
        width: 75px;
        height: 75px;
        font-size: 14px;
    }
    
    .screen {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .game-title {
        font-size: 28px;
        margin-bottom: 10px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .game-btn {
        padding: 10px 25px;
        font-size: 16px;
        margin: 6px;
    }
    
    .hud {
        padding: 6px 8px;
    }
    
    .hud-label {
        font-size: 8px;
    }
    
    .hud-value {
        font-size: 12px;
    }
    
    .pause-btn {
        padding: 5px 10px;
        font-size: 14px;
    }
    
    .controls-info {
        padding: 12px;
    }
    
    .controls-info h3 {
        font-size: 16px;
    }
    
    .controls-info p {
        font-size: 12px;
    }
    
    .image-upload-section {
        padding: 12px;
    }
    
    .image-upload-section h3 {
        font-size: 14px;
    }
    
    .stats {
        padding: 15px;
    }
    
    .stat-item {
        font-size: 14px;
    }
    
    .mobile-controls {
        bottom: 5px;
        gap: 10px;
    }
    
    .control-btn {
        width: 50px;
        height: 50px;
        font-size: 18px;
    }
    
    .jump-btn {
        width: 65px;
        height: 65px;
        font-size: 12px;
    }
    
    .version {
        font-size: 10px;
    }
}

@media (max-width: 360px) {
    .game-title {
        font-size: 24px;
    }
    
    .subtitle {
        font-size: 14px;
    }
    
    .game-btn {
        padding: 8px 20px;
        font-size: 14px;
    }
    
    .hud-label {
        font-size: 7px;
    }
    
    .hud-value {
        font-size: 11px;
    }
    
    .control-btn {
        width: 45px;
        height: 45px;
        font-size: 16px;
    }
    
    .jump-btn {
        width: 55px;
        height: 55px;
        font-size: 11px;
    }
}

/* Landscape mode on mobile */
@media (max-width: 900px) and (orientation: landscape) {
    .game-wrapper {
        padding: 0;
    }
    
    .game-container {
        max-height: 100vh;
    }
    
    .hud {
        padding: 5px 10px;
    }
    
    .hud-label {
        font-size: 8px;
    }
    
    .hud-value {
        font-size: 12px;
    }
    
    .game-title {
        font-size: 32px;
        margin-bottom: 5px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .controls-info {
        padding: 10px;
        margin: 10px 0;
    }
    
    .controls-info h3 {
        font-size: 14px;
        margin-bottom: 5px;
    }
    
    .controls-info p {
        font-size: 11px;
        margin: 4px 0;
    }
    
    .image-upload-section {
        padding: 10px;
        margin: 10px 0;
    }
    
    .image-upload-section h3 {
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    .upload-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    
    .game-btn {
        padding: 8px 25px;
        font-size: 16px;
        margin: 5px;
    }
    
    .stats {
        padding: 15px;
    }
    
    .stat-item {
        font-size: 14px;
        margin: 8px 0;
    }
    
    .mobile-controls {
        bottom: 5px;
        gap: 12px;
    }
    
    .control-btn {
        width: 50px;
        height: 50px;
    }
    
    .jump-btn {
        width: 60px;
        height: 60px;
    }
    
    .screen {
        padding: 10px;
        overflow-y: auto;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.screen {
    animation: fadeIn 0.3s ease-out;
}