/* =========================================
   REVEAL.CSS - 礼物揭晓时刻 / 沉浸式音乐体验
   Designed for Awwwards-level Aesthetics
   Theme: Clean White (极简白)
   ========================================= */

/* 容器：全屏，覆盖一切，默认隐藏 */
.reveal-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    /* 高于 Overlay */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1s cubic-bezier(0.22, 1, 0.36, 1);

    /* 核心修改：纯白背景，极简风格 */
    background: #ffffff;
    color: #1a1a1a;
}

.reveal-container.active {
    opacity: 1;
    pointer-events: all;
}

/* 顶部提示词 */
.reveal-header {
    position: absolute;
    top: 8%;
    text-align: center;
    color: #999999;
    /* 浅灰色 */
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    transform: translateY(-20px);
    opacity: 0;
    transition: all 1s ease 0.5s;
}

.reveal-container.active .reveal-header {
    transform: translateY(0);
    opacity: 1;
}

/* 核心卡片区域 */
.music-immersive-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 400px;
    padding: 20px;
    transform: scale(0.95);
    transition: transform 1s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-container.active .music-immersive-card {
    transform: scale(1);
}

/* 唱片/专辑封面容器 */
.vinyl-wrapper {
    position: relative;
    width: 280px;
    height: 280px;
    margin-bottom: 3rem;
    border-radius: 50%;

    /* 调整阴影以适应白色背景：更柔和、更扩散，增加高级感 */
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.12),
        0 0 0 1px rgba(0, 0, 0, 0.05);
    /* 极细边框替代光晕 */

    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 黑胶纹理遮罩 (伪元素) */
.vinyl-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background:
        repeating-radial-gradient(#111 0,
            #111 2px,
            #222 3px,
            #222 4px);
    opacity: 0.1;
    /* 淡淡的纹理 */
    pointer-events: none;
    z-index: 2;
}

/* 专辑图片 */
.vinyl-art {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    z-index: 1;
    /* 默认不旋转，播放时添加类名 */
    animation: rotateVinyl 20s linear infinite;
    animation-play-state: paused;
}

.reveal-container.playing .vinyl-art {
    animation-play-state: running;
    box-shadow: 0 0 40px var(--accent-1);
    /* 播放时产生有色光晕 */
}

/* 唱片中间的小孔 */
.vinyl-center-hole {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 15px;
    height: 15px;
    background: #ffffff;
    /* 必须改为白色，模拟镂空 */
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

/* 文本信息 */
.track-info-large {
    text-align: center;
    color: #1a1a1a;
    margin-bottom: 2rem;
    position: relative;
}

.track-title-large {
    font-family: 'Playfair Display', serif;
    font-size: 2.2rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.2;
    color: #111111;
    /* 纯黑标题 */
    opacity: 0;
    transform: translateY(20px);
}

.track-artist-large {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    color: #888888;
    /* 中灰副标题 */
    margin-top: 0.5rem;
    letter-spacing: 0.05em;
    font-weight: 400;
    opacity: 0;
    transform: translateY(20px);
}

/* 进场动画延迟 */
.reveal-container.active .track-title-large {
    animation: fadeInUp 1s cubic-bezier(0.22, 1, 0.36, 1) forwards 0.3s;
}

.reveal-container.active .track-artist-large {
    animation: fadeInUp 1s cubic-bezier(0.22, 1, 0.36, 1) forwards 0.5s;
}

/* 播放控制条 */
.immersive-controls {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
    opacity: 0;
    transform: translateY(20px);
}

.reveal-container.active .immersive-controls {
    animation: fadeInUp 1s cubic-bezier(0.22, 1, 0.36, 1) forwards 0.7s;
}

/* 进度条容器 */
.progress-container {
    width: 100%;
    height: 4px;
    background: #f0f0f0;
    /* 浅灰槽 */
    border-radius: 2px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* 进度条本身 */
.progress-bar {
    height: 100%;
    background: var(--accent-1, #4facfe);
    width: 0%;
    border-radius: 2px;
    position: relative;
    transition: width 0.1s linear;
}

/* 进度条末端的光点 */
.progress-bar::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--accent-1);
    /* 使用主题色 */
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-1);
    opacity: 0;
}

/* 时间显示 */
.time-row {
    display: flex;
    justify-content: space-between;
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    color: #bbbbbb;
    /* 更浅的灰色 */
    font-variant-numeric: tabular-nums;
}

/* 播放按钮 (简约圆圈) */
.play-btn-large {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid #eeeeee;
    /* 极细边框 */
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    /* 柔和阴影 */
    color: #333333;
}

.play-btn-large:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    border-color: #dddddd;
}

.play-btn-large svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
    margin-left: 2px;
    /* 视觉修正 play icon */
}

.reveal-container.playing .play-btn-large svg {
    margin-left: 0;
    /* pause icon 居中 */
}

/* Next Step Swipe Hint (Replaces button) */
.swipe-hint-container {
    position: absolute;
    bottom: 5%;
    left: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: grab;
    opacity: 0;
    transition: opacity 0.5s;
    z-index: 10;
    pointer-events: none;
    /* Let container handle swipes */
}

.reveal-container.active .swipe-hint-container {
    animation: fadeInUp 1s forwards 2s;
}

.swipe-arrow {
    width: 28px;
    height: 28px;
    color: #bbbbbb;
    /* Light gray arrow */
    animation: bounceUp 2s infinite;
}

.hint-text {
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    color: #999999;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-weight: 500;
}

@keyframes bounceUp {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
        opacity: 0.6;
    }

    40% {
        transform: translateY(-8px);
        opacity: 1;
    }

    60% {
        transform: translateY(-4px);
        opacity: 1;
    }
}

/* 动画定义 */
@keyframes rotateVinyl {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-5px);
    }

    60% {
        transform: translateY(-3px);
    }
}

/* 移动端适配 */
@media (max-width: 480px) {
    .vinyl-wrapper {
        width: 240px;
        height: 240px;
        margin-bottom: 2rem;
    }

    .track-title-large {
        font-size: 1.8rem;
        /* 稍微调小一点 */
    }
}