/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #fce4ec 0%, #f8bbd0 100%);
    font-family: 'Noto Serif SC', serif;
    color: #5d4037;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

/* 返回按钮样式 */
.back-button {
    position: fixed;
    top: 20px;
    left: 20px;
    background: linear-gradient(135deg, #e91e63 0%, #c2185b 100%);
    color: white;
    border: none;
    padding: 10px 15px;
    font-size: 1rem;
    border-radius: 30px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(233, 30, 99, 0.3);
    z-index: 10;
}

.back-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(233, 30, 99, 0.4);
    background: linear-gradient(135deg, #d81b60 0%, #ad1457 100%);
}

.back-button i {
    margin-right: 6px;
    font-size: 0.9rem;
}

/* 标题样式 */
header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.title {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 3rem;
    color: #d81b60;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    animation: fadeIn 2s ease-in-out;
}

.subtitle {
    font-size: 1.2rem;
    color: #ad1457;
    font-weight: 300;
    letter-spacing: 1px;
    animation: fadeIn 2.5s ease-in-out;
}

/* 照片框样式 */
.photo-frame {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto 3rem;
    perspective: 1000px;
}

.photo {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.8s;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    border-radius: 10px;
    overflow: hidden;
    background-color: white;
    padding: 10px;
}

.photo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
    border-radius: 5px;
    transition: transform 0.5s ease;
}

.photo:hover img {
    transform: scale(1.05);
}

.heart-shape {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: transparent;
    z-index: -1;
    opacity: 0.8;
    animation: heartBeat 5s infinite;
    pointer-events: none;
}

.heart-shape:before,
.heart-shape:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 25%;
    border: 2px solid #e91e63;
    border-radius: 50% 50% 0 0;
    transform: rotate(-45deg);
    transform-origin: 0 100%;
}

.heart-shape:after {
    left: 0;
    transform: rotate(45deg);
    transform-origin: 100% 100%;
}

/* 诗句区域样式 */
.poem-section {
    text-align: center;
    margin-bottom: 3rem;
    perspective: 1000px;
}

.poem {
    display: inline-block;
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transform: rotateX(10deg);
    transition: transform 0.3s ease;
    animation: float 6s ease-in-out infinite;
}

.poem:hover {
    transform: rotateX(0);
}

.poem p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: #ad1457;
    line-height: 1.8;
}

/* 情书区域样式 */
.love-letter {
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.love-letter::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid #f8bbd0;
    border-radius: 15px;
    z-index: -1;
    pointer-events: none;
}

.love-letter h2 {
    text-align: center;
    color: #c2185b;
    margin-bottom: 1.5rem;
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 1.8rem;
}

.love-letter p {
    margin-bottom: 1rem;
    line-height: 1.8;
    text-indent: 2em;
}

.signature {
    text-align: right;
    font-style: italic;
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 1.3rem;
    margin-top: 1.5rem;
    color: #c2185b;
}

/* 互动按钮样式 */
.interactive-section {
    text-align: center;
    margin-bottom: 3rem;
}

.heart-button {
    background-color: #e91e63;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 30px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(233, 30, 99, 0.3);
    outline: none;
}

.heart-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(233, 30, 99, 0.4);
    background-color: #d81b60;
}

.heart-icon {
    width: 24px;
    height: 24px;
    fill: white;
    margin-right: 10px;
    transition: transform 0.3s ease;
}

.heart-button:hover .heart-icon {
    transform: scale(1.2);
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    max-width: 600px;
    width: 90%;
    position: relative;
    transform: scale(0.8);
    transition: transform 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.modal.show .modal-content {
    transform: scale(1);
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #757575;
}

.modal h2 {
    text-align: center;
    color: #c2185b;
    margin-bottom: 1.5rem;
    font-family: 'Ma Shan Zheng', cursive;
}

.love-message {
    line-height: 1.8;
    margin-bottom: 2rem;
    text-indent: 2em;
}

.heart-animation {
    height: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* 页脚样式 */
footer {
    text-align: center;
    padding: 2rem;
    position: relative;
    width: 100%;
    margin-top: auto;
}

.footer-text {
    color: #ad1457;
    font-size: 1.1rem;
    font-family: 'Ma Shan Zheng', cursive;
}

/* 飘落的心形 */
.falling-hearts {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.heart {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: rgba(233, 30, 99, 0.3);
    transform: rotate(45deg);
    top: -100px;
}

.heart::before,
.heart::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: inherit;
    border-radius: 50%;
}

.heart::before {
    top: -10px;
    left: 0;
}

.heart::after {
    top: 0;
    left: -10px;
}

.floating-hearts {
    position: absolute;
    width: 100%;
    height: 100px;
    top: -50px;
    left: 0;
    pointer-events: none;
}

/* 音乐播放器样式 */
.music-player {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 30px;
    padding: 8px 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    z-index: 10;
    transition: all 0.3s ease;
}

.music-player:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.music-icon {
    color: #e91e63;
    margin-right: 10px;
    animation: pulse 2s infinite;
}

.music-controls {
    display: flex;
    align-items: center;
}

.play-pause-btn {
    background-color: #e91e63;
    color: white;
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin-right: 10px;
    transition: all 0.3s ease;
}

.play-pause-btn:hover {
    background-color: #c2185b;
    transform: scale(1.1);
}

.music-name {
    font-size: 0.9rem;
    color: #ad1457;
    white-space: nowrap;
}

/* 点击提示样式 */
.click-tip {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 10px 15px;
    border-radius: 20px;
    color: #ad1457;
    font-size: 0.9rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    animation: fadeInOut 3s infinite;
    z-index: 10;
}

/* 动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes heartBeat {
    0% {
        transform: scale(1);
    }
    14% {
        transform: scale(1.1);
    }
    28% {
        transform: scale(1);
    }
    42% {
        transform: scale(1.1);
    }
    70% {
        transform: scale(1);
    }
}

@keyframes float {
    0% {
        transform: translateY(0) rotateX(10deg);
    }
    50% {
        transform: translateY(-15px) rotateX(10deg);
    }
    100% {
        transform: translateY(0) rotateX(10deg);
    }
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .title {
        font-size: 2.2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .photo-frame {
        width: 300px;
        height: 300px;
    }
    
    .poem p {
        font-size: 0.95rem;
    }
    
    .love-letter h2 {
        font-size: 1.5rem;
    }
    
    .heart-button {
        padding: 12px 24px;
        font-size: 1rem;
    }
    
    .music-player {
        bottom: 10px;
        right: 10px;
        padding: 5px 10px;
    }
    
    .click-tip {
        bottom: 10px;
        left: 10px;
        font-size: 0.8rem;
    }
    
    .back-button {
        top: 10px;
        left: 10px;
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .photo-frame {
        width: 250px;
        height: 250px;
    }
    
    .poem {
        padding: 1.5rem;
    }
    
    .love-letter {
        padding: 1.5rem;
    }
    
    .music-name {
        display: none;
    }
    
    .back-button {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
    
    .back-button i {
        margin-right: 4px;
    }
}