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

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 20px;
    text-align: center;
}

.logo {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo img {
    max-height: 36px;
    width: auto;
    margin-right: 8px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-left: 0;
}

main {
    flex: 1;
    padding: 20px;
}

.loading-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 60vh;
}

.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.message-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 60vh;
}

.message-box {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 400px;
}

.message-box p {
    font-size: 18px;
    color: #e74c3c;
}

.album-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.swiper {
    width: 100%;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    aspect-ratio: 3/4;
}

.swiper-slide {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f1f1f1;
}

.swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.swiper-pagination-bullet-active {
    background-color: #3498db;
}

.expire-info {
    text-align: center;
    margin: 15px 0;
    color: #777;
    font-size: 14px;
}

.action-buttons {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.btn {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 50px;
    font-size: 16px;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(52, 152, 219, 0.4);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
}

footer {
    background-color: #fff;
    padding: 15px;
    text-align: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    font-size: 14px;
    color: #777;
}

@media (max-width: 480px) {
    .album-container {
        width: 100%;
    }
    
    .message-box {
        width: 90%;
        padding: 20px;
    }
    
    .btn {
        width: 80%;
        max-width: 300px;
    }
}

/* 图片模态窗口样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    overflow: auto;
    animation: fadeIn 0.3s;
}

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

.modal-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
    padding: 20px;
}

.modal-image {
    max-width: 95%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 5px;
    margin-bottom: 20px;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    color: #fff;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-actions {
    display: flex;
    justify-content: center;
    margin-top: 15px;
}

.modal-button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 16px;
    cursor: pointer;
    margin: 0 10px;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
    transition: all 0.3s ease;
}

.modal-button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

.modal-button.download {
    background-color: #2ecc71;
}

.modal-button.download:hover {
    background-color: #27ae60;
} 

/* 图片切换导航按钮 */
.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 36px;
    font-weight: bold;
    cursor: pointer;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    user-select: none;
    z-index: 1010;
}

.modal-nav:hover {
    background-color: rgba(0, 0, 0, 0.8);
    transform: translateY(-50%) scale(1.1);
}

.modal-prev {
    left: 20px;
}

.modal-next {
    right: 20px;
}

@media (max-width: 480px) {
    .modal-nav {
        width: 40px;
        height: 40px;
        font-size: 24px;
    }
    
    .modal-prev {
        left: 10px;
    }
    
    .modal-next {
        right: 10px;
    }
}