:root {
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --primary: #22d3ee;
    --primary-glow: rgba(34, 211, 238, 0.4);
    --secondary: #818cf8;
    --food: #f43f5e;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --gold: #fbbf24;
    --silver: #94a3b8;
    --bronze: #d97706;
}

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

body {
    font-family: 'Outfit', 'Inter', sans-serif;
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(circle at 20% 30%, rgba(34, 211, 238, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(129, 140, 248, 0.05) 0%, transparent 40%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.game-container {
    width: 100%;
    max-width: 800px;
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
    align-items: start;
}

header {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

.title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-main);
}

.title span {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-glow);
}

.score-board {
    display: flex;
    gap: 15px;
}

.score-item {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--secondary);
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 15px;
    z-index: 10;
    transition: all 0.3s ease;
}

.overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay h2 {
    font-size: 1.8rem;
    color: var(--primary);
    text-align: center;
}

#name-entry {
    width: 80%;
}

#name-entry.hidden {
    display: none;
}

#player-name {
    width: 100%;
    padding: 12px 20px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    text-align: center;
    transition: all 0.2s ease;
}

#player-name:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(34, 211, 238, 0.2);
}

.overlay p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.btn {
    padding: 12px 32px;
    border-radius: 100px;
    border: none;
    font-family: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn.primary {
    background: var(--primary);
    color: var(--bg-dark);
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.controls-info {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.controls-info span {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

/* 移动端控制盘 */
.mobile-controls {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.control-row {
    display: flex;
    gap: 10px;
}

.ctrl-btn {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    font-size: 1.2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.ctrl-btn:active {
    background: var(--primary);
    color: var(--bg-dark);
    transform: scale(0.95);
}

/* 排行榜样式 */
.leaderboard-container {
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    padding: 20px;
    height: 500px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.leaderboard-container h3 {
    font-size: 1.1rem;
    color: var(--primary);
    text-align: center;
}

.leaderboard-table-wrapper {
    flex: 1;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) transparent;
}

#leaderboard-table {
    width: 100%;
    border-collapse: collapse;
}

#leaderboard-table th {
    position: sticky;
    top: 0;
    background: var(--bg-dark);
    padding: 10px;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: left;
    z-index: 1;
}

#leaderboard-table td {
    padding: 12px 10px;
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.rank-1 {
    color: var(--gold);
    font-weight: bold;
}

.rank-2 {
    color: var(--silver);
    font-weight: bold;
}

.rank-3 {
    color: var(--bronze);
    font-weight: bold;
}

@media (max-width: 768px) {
    .mobile-controls {
        display: flex;
    }

    .controls-info {
        display: none;
    }
}