/* 一锅温柔 - 互动诗歌样式 */

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

body {
    font-family: 'Noto Serif SC', 'STSong', serif;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    background: #000;
    color: #fff;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

/* 背景图层 */
#background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#background-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 2s ease-in-out;
}

#background-image.visible {
    opacity: 1;
}

/* 颜色覆盖层（情绪滤镜） */
#overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    transition: background 2s ease-in-out;
    pointer-events: none;
}

/* 春 - 清澈透明 */
.overlay-spring {
    background: rgba(180, 220, 240, 0.2) !important;
}

/* 冬 - 冷灰 */
.overlay-winter {
    background: rgba(100, 110, 120, 0.4) !important;
}

/* 秋 - 温暖金色 */
.overlay-autumn {
    background: rgba(255, 200, 120, 0.25) !important;
}

/* 文本层 */
#text-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    max-width: 80%;
    text-align: center;
    pointer-events: none;
}

#poem-text {
    font-size: clamp(1.5rem, 4vw, 3rem);
    line-height: 1.8;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.8);
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    letter-spacing: 0.1em;
}

#poem-text.visible {
    opacity: 1;
}

/* 触摸提示 */
#touch-hint {
    position: fixed;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    text-align: center;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

#touch-hint.visible {
    opacity: 1;
}

#touch-hint p {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    letter-spacing: 0.2em;
}

.pulse {
    display: inline-block;
    font-size: 1.5rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* 进度指示器 */
#progress-indicator {
    position: fixed;
    top: 5%;
    right: 5%;
    z-index: 20;
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.dot.active {
    background: rgba(255, 255, 255, 1);
    transform: scale(1.5);
}

/* 移动端优化 */
@media (max-width: 768px) {
    #poem-text {
        font-size: clamp(1.2rem, 5vw, 2rem);
        max-width: 90%;
    }

    #touch-hint p {
        font-size: 0.9rem;
    }
}

/* 渐变过渡效果 */
.fade-out {
    animation: fadeOut 1s forwards;
}

.fade-in {
    animation: fadeIn 1s forwards;
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}