body {
    margin: 0;
    overflow: hidden;
    background: linear-gradient(135deg, #0c0c0c 0%, #1a1a2e 50%, #16213e 100%);
    font-family: 'Arial', sans-serif;
    color: white;
    position: relative;
}

#christmasTreeCanvas {
    display: block;
    width: 100vw;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1;
}

/* 音乐播放器样式 */
.music-player {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 25px;
    padding: 15px 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    z-index: 100;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.music-info {
    min-width: 150px;
}

.song-title {
    font-size: 16px;
    font-weight: bold;
    color: #4dff91;
}

.artist {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.controls {
    display: flex;
    gap: 10px;
}

.control-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.control-btn.play-pause {
    background: linear-gradient(135deg, #4dff91, #00ccff);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volume-control input[type="range"] {
    width: 80px;
    height: 4px;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    outline: none;
}

.volume-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #4dff91;
    cursor: pointer;
}

/* 相框样式 */
.photo-frame {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 15px;
    width: 300px;
    z-index: 100;
    border: 2px solid rgba(255, 215, 0, 0.5);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.photo-container {
    width: 100%;
    height: 200px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.active-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.photo-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    padding: 8px;
    text-align: center;
    font-size: 14px;
    color: #ffd700;
}

.photo-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 15px;
}

.photo-btn {
    background: rgba(255, 215, 0, 0.3);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.photo-btn:hover {
    background: rgba(255, 215, 0, 0.5);
    transform: scale(1.1);
}

/* 提示信息 */
.hint {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 100;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* 祝福语 */
.message {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 100;
    background: rgba(0, 0, 0, 0.6);
    padding: 20px;
    border-radius: 15px;
    max-width: 300px;
}

.message h1 {
    margin: 0;
    font-size: 24px;
    color: #4dff91;
    text-shadow: 0 2px 10px rgba(77, 255, 145, 0.5);
}

.message p {
    margin: 10px 0 0;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
}

/* 雪花效果 */
.snowflakes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
}

.snowflake {
    position: absolute;
    background: white;
    border-radius: 50%;
    opacity: 0.8;
    animation: fall linear infinite;
}

@keyframes fall {
    to {
        transform: translateY(100vh);
    }
}