/* 基础设置 */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f0f8ff, #fff0f5); /* 柔和背景 */
    color: #333;
    text-align: center;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

/* 舞台切换效果 */
.stage {
    padding: 20px;
    transition: opacity 1s ease-in-out, transform 1s ease-in-out;
}
.hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none; /* 禁用点击 */
    position: absolute; /* 使其不占布局空间 */
}
.active {
    opacity: 1;
    transform: translateY(0);
}

/* 倒计时样式 */
.countdown-timer span {
    display: inline-block;
    background: rgba(255, 255, 255, 0.8);
    border: 3px solid #ff69b4; /* 亮粉色边框 */
    border-radius: 10px;
    padding: 15px 25px;
    margin: 10px;
    font-size: 2em;
    font-weight: bold;
    color: #ff69b4;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    animation: pulse 1.5s infinite alternate; /* 跳动动画 */
}

/* 动画定义 */
@keyframes pulse {
    from { transform: scale(1); }
    to { transform: scale(1.05); }
}

/* 惊喜内容区 */
.message-card {
    background: #ffffff;
    border-radius: 15px;
    padding: 30px;
    margin: 20px auto;
    max-width: 600px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transform: rotate(-1deg); /* 略微倾斜，增加趣味性 */
}

/* 照片墙样式 (响应式) */
.photo-gallery {
    margin-top: 40px;
    max-width: 90%;
}
.photos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}
.photos img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: transform 0.3s ease-in-out;
    cursor: pointer;
}
.photos img:hover {
    transform: scale(1.1) rotate(2deg); /* 鼠标悬停放大旋转 */
}

/* Canvas 烟花/彩带 */
#birthday-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* 确保不影响其他元素的点击 */
    z-index: 1000;
}