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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: rgba(26, 26, 46, 0.95);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    max-width: 900px;
    width: 100%;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.header {
    text-align: center;
    margin-bottom: 30px;
    animation: slideDown 0.6s ease;
}

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

h1 {
    color: #FFD700;
    font-size: 2.5em;
    margin-bottom: 20px;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
    letter-spacing: 2px;
}

.stats {
    display: flex;
    justify-content: space-around;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.stat-item {
    background: linear-gradient(135deg, rgba(0, 255, 0, 0.1) 0%, rgba(255, 20, 147, 0.1) 100%);
    padding: 15px 25px;
    border-radius: 10px;
    border: 2px solid rgba(0, 255, 0, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    min-width: 150px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 255, 0, 0.6);
    box-shadow: 0 10px 25px rgba(0, 255, 0, 0.2);
}

.stat-item .label {
    color: #00FF00;
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
}

.stat-item .value {
    color: #FFD700;
    font-size: 1.8em;
    font-weight: bold;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

#gameCanvas {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px 0;
    border: 3px solid rgba(0, 255, 0, 0.5);
    border-radius: 10px;
    box-shadow: 0 0 30px rgba(0, 255, 0, 0.3), inset 0 0 30px rgba(0, 255, 0, 0.1);
    background: #1a1a2e;
    transition: all 0.3s ease;
}

#gameCanvas:hover {
    border-color: rgba(0, 255, 0, 0.8);
    box-shadow: 0 0 40px rgba(0, 255, 0, 0.5), inset 0 0 40px rgba(0, 255, 0, 0.2);
}

.controls {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin: 30px 0;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    font-size: 1em;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.btn:active:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, #00FF00 0%, #00CC00 100%);
    color: #1a1a2e;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #00FF44 0%, #00DD00 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #1a1a2e;
}

.btn-secondary:hover:not(:disabled) {
    background: linear-gradient(135deg, #FFEE00 0%, #FFB800 100%);
}

.btn-danger {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF4757 100%);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: linear-gradient(135deg, #FF8888 0%, #FF6B78 100%);
}

.instructions {
    background: rgba(0, 255, 0, 0.05);
    border-left: 4px solid #00FF00;
    padding: 25px;
    border-radius: 10px;
    margin-top: 30px;
    animation: slideUp 0.6s ease 0.2s backwards;
}

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

.instructions h2 {
    color: #00FF00;
    margin-bottom: 15px;
    font-size: 1.5em;
    text-shadow: 0 0 10px rgba(0, 255, 0, 0.4);
}

.instructions ul {
    list-style: none;
    color: #E0E0E0;
    line-height: 1.8;
}

.instructions li {
    margin: 10px 0;
    padding-left: 30px;
    position: relative;
    font-size: 0.95em;
}

.instructions li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: #FFD700;
}

.instructions strong {
    color: #FFD700;
    font-weight: bold;
}

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

    .container {
        padding: 20px;
    }

    .stats {
        flex-direction: column;
        align-items: stretch;
    }

    .stat-item {
        min-width: auto;
    }

    .controls {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    #gameCanvas {
        margin: 15px 0;
    }

    .instructions {
        padding: 15px;
    }

    .instructions h2 {
        font-size: 1.2em;
    }

    .instructions li {
        font-size: 0.85em;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5em;
    }

    .container {
        padding: 15px;
        border-radius: 15px;
    }

    .stat-item {
        padding: 10px 15px;
    }

    .stat-item .value {
        font-size: 1.5em;
    }

    .instructions {
        padding: 10px;
    }

    .instructions li {
        padding-left: 20px;
        font-size: 0.75em;
    }
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.stat-item .value {
    animation: pulse 2s ease-in-out infinite;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(26, 26, 46, 0.5);
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 0, 0.5);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 255, 0, 0.8);
}