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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
    color: #ffffff;
    min-height: 100vh;
    padding: 20px;
}

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

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 2.5em;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.player-setup input {
    padding: 12px;
    font-size: 16px;
    border: none;
    border-radius: 8px;
    margin-right: 10px;
    width: 250px;
}

.player-setup button {
    padding: 12px 24px;
    font-size: 16px;
    background: #4ecdc4;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.player-setup button:hover {
    background: #45b7af;
}

.stats-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.label {
    font-weight: bold;
    color: #4ecdc4;
}

.click-area {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto 30px;
    cursor: pointer;
    transition: transform 0.1s;
}

.click-area:active {
    transform: scale(0.95);
}

.planet {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 30%, #4ecdc4, #2a6b6b);
    border-radius: 50%;
    box-shadow: 
        0 0 50px rgba(78, 205, 196, 0.5),
        inset -20px -20px 50px rgba(0, 0, 0, 0.3);
    animation: rotate 20s linear infinite;
}

.click-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.upgrades-panel {
    background: rgba(255, 255, 255, 0.1);
    padding: 25px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.upgrades-panel h3 {
    margin-bottom: 20px;
    text-align: center;
    color: #4ecdc4;
}

.upgrades-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.upgrade-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.upgrade-card h4 {
    margin-bottom: 10px;
    color: #ff6b6b;
}

.upgrade-card p {
    margin-bottom: 15px;
    opacity: 0.8;
}

.upgrade-btn {
    padding: 10px 20px;
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.2s;
}

.upgrade-btn:hover:not(:disabled) {
    transform: translateY(-2px);
}

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

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Адаптивность */
@media (max-width: 600px) {
    .click-area {
        width: 250px;
        height: 250px;
    }
    
    .stats-panel {
        grid-template-columns: 1fr;
    }
    
    .upgrades-grid {
        grid-template-columns: 1fr;
    }
}