/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航栏 */
header {
    background-color: #ffffff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08); /* Softer shadow */
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    font-size: 1.8rem;
    color: #2563eb;
    font-weight: 700;
}

nav .nav-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 20px;
}

nav ul li:first-child {
    margin-left: 0;
}

nav ul li a {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

nav ul li a:hover {
    color: #2563eb;
    background-color: #f0f7ff;
    transform: translateY(-2px); /* Subtle lift effect */
}

nav ul li a.active {
    color: #2563eb;
    background-color: #e6f0fd;
}

/* Language Selector Styles */
.language-selector {
    display: flex;
    align-items: center;
    margin-left: auto; /* Push to the right side */
}

#language-select {
    background: transparent;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 500;
    color: #4b5563;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}

#language-select:hover {
    border-color: #2563eb;
    background-color: #f8fafc;
}

#language-select:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

#language-select option {
    padding: 8px;
    background: white;
    color: #374151;
}

/* 主内容区域 */
main {
    padding: 40px 0;
    min-height: calc(100vh - 150px);
}

.section {
    display: none;
    background-color: #fff;
    border-radius: 10px; /* Slightly more rounded */
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04); /* Softer shadow */
    padding: 30px;
    margin-bottom: 30px;
}

.active-section {
    display: block;
    background-color: #fff;
    border-radius: 10px; /* Slightly more rounded */
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04); /* Softer shadow */
    padding: 30px;
    margin-bottom: 30px;
}

/* 首页样式 */
.hero {
    text-align: center;
    margin-bottom: 40px;
}

.hero h2 {
    font-size: 2.2rem;
    color: #1a202c;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.1rem;
    color: #4b5563;
    max-width: 600px;
    margin: 0 auto;
}

.hero-slogan {
    font-size: 1.2rem; /* Slightly larger than body text */
    color: #2563eb; /* Use the primary brand color */
    font-weight: 600; /* Make it bold */
    margin-top: 15px; /* Add some space above it */
}

.upload-container {
    max-width: 700px;
    margin: 0 auto;
}

#logged-out-message {
    text-align: center;
    padding: 40px 20px;
    border: 2px dashed #e2e8f0;
    border-radius: 8px;
    background-color: #f8fafc;
}

#logged-out-message p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: #4b5563;
}

.upload-box {
    padding: 30px;
    border: 2px dashed #cbd5e1;
    border-radius: 10px; /* Slightly more rounded */
    text-align: center;
    background-color: #f8fafc;
    margin-bottom: 20px;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04); /* Softer shadow */
}

.credit-status {
    margin-bottom: 20px;
    text-align: right;
}

.credit-status p {
    font-size: 1rem;
    color: #4b5563;
}

.upload-icon {
    margin-bottom: 15px;
}

.upload-icon img {
    width: 64px;
    height: 64px;
}

.custom-file-upload {
    display: block;
    cursor: pointer;
    margin-bottom: 20px;
}

input[type="file"] {
    display: none;
}

#file-name {
    margin: 15px 0;
    font-size: 0.95rem;
    color: #4b5563;
    word-break: break-all;
}

.upload-hint {
    font-size: 0.85rem;
    color: #6b7280;
    margin-top: 8px;
}

.file-list {
    max-height: 200px;
    overflow-y: auto;
    margin: 15px 0;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    padding: 0;
}

.file-list:empty {
    display: none;
}

/* 免责声明样式 */
.disclaimer-box {
    margin: 20px 0;
    padding: 15px;
    background-color: #f8f9fa;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
}

.disclaimer-box h4 {
    font-size: 1.1rem;
    color: #2d3748;
    margin-bottom: 10px;
    font-weight: 600;
}

.disclaimer-content {
    max-height: 150px;
    overflow-y: auto;
    padding: 10px;
    background-color: #fff;
    border: 1px solid #edf2f7;
    border-radius: 4px;
    margin-bottom: 12px;
}

.disclaimer-content p {
    font-size: 0.9rem;
    color: #4a5568;
    margin-bottom: 8px;
    line-height: 1.5;
}

/* 免责声明折叠效果 */
.disclaimer-content.collapsed {
    max-height: 0;
    overflow: hidden;
    padding: 0;
    margin: 0;
    border: none;
    transition: all 0.3s ease-in-out;
}

.disclaimer-box h4.collapsed {
    margin-bottom: 5px;
    color: #4a5568;
    font-size: 1rem;
}

.disclaimer-box.agreed {
    background-color: #f0fff4;
    border-color: #c6f6d5;
}

.disclaimer-agreement {
    display: flex;
    align-items: center;
    margin-top: 10px;
}

.disclaimer-agreement input[type="checkbox"] {
    display: inline-block;
    margin-right: 8px;
    width: 16px;
    height: 16px;
}

.disclaimer-agreement label {
    font-size: 0.95rem;
    color: #2d3748;
    font-weight: 500;
    cursor: pointer;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    border-bottom: 1px solid #e5e7eb;
}

.file-item:last-child {
    border-bottom: none;
}

.file-item-name {
    flex-grow: 1;
    font-size: 0.9rem;
    color: #4b5563;
    margin-right: 10px;
    word-break: break-all;
}

.file-item-size {
    font-size: 0.8rem;
    color: #6b7280;
    white-space: nowrap;
    margin-right: 15px;
}

.file-item-remove {
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0 5px;
}

.file-item-remove:hover {
    color: #b91c1c;
}

.file-item-progress {
    width: 100%;
    height: 4px;
    background-color: #e5e7eb;
    border-radius: 2px;
    margin-top: 5px;
    overflow: hidden;
    display: none;
}

.file-item-progress-fill {
    height: 100%;
    background-color: #2563eb;
    width: 0%;
    transition: width 0.3s ease;
}

.info-box {
    margin-top: 20px;
    font-size: 0.9rem;
    color: #6b7280;
}

.info-box p {
    margin-bottom: 5px;
}

#progress-container {
    margin-top: 20px;
}

.progress-bar {
    height: 10px;
    background-color: #e2e8f0;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 10px;
}

#progress-bar-fill {
    height: 100%;
    background-color: #2563eb;
    width: 0%;
    transition: width 0.3s ease;
}

#status-message {
    font-size: 0.9rem;
    color: #4b5563;
    text-align: center;
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px; /* Slightly more rounded */
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.primary-btn {
    background-color: #2563eb;
    color: white;
}

.primary-btn:hover {
    background-color: #1d4ed8;
    transform: translateY(-1px); /* Subtle lift effect */
}

.secondary-btn {
    background-color: #e2e8f0;
    color: #4b5563;
}

.secondary-btn:hover {
    background-color: #cbd5e1;
    transform: translateY(-1px); /* Subtle lift effect */
}

/* 订单表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th, table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

table th {
    font-weight: 600;
    color: #1a202c;
    background-color: #f8fafc;
}

table tr:hover {
    background-color: #f0f7ff;
}

.order-actions button {
    padding: 6px 12px;
    font-size: 0.9rem;
    margin-right: 5px;
}

#no-orders-message {
    text-align: center;
    padding: 40px 20px;
    color: #6b7280;
}

/* 积分区域样式 */
.credit-card {
    background-color: #2563eb;
    color: white;
    border-radius: 10px; /* Slightly more rounded */
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.15); /* Softer shadow */
}

.credit-amount {
    text-align: center;
    margin-bottom: 20px;
}

#credit-value {
    font-size: 3.5rem;
    font-weight: 700;
    display: block;
}

.credit-label {
    font-size: 1.2rem;
}

.credit-updated {
    text-align: right;
    font-size: 0.9rem;
    opacity: 0.8;
}

.credit-actions {
    text-align: center;
    margin-bottom: 30px;
}

.recharge-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.recharge-option {
    border: 1px solid #e2e8f0;
    border-radius: 10px; /* Slightly more rounded */
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.recharge-option:hover {
    border-color: #2563eb;
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.1);
    transform: translateY(-2px); /* Subtle lift effect */
}

.recharge-option .amount {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #1a202c;
}

.recharge-option .price {
    font-size: 1.2rem;
    color: #2563eb;
    margin-bottom: 15px;
}

.select-recharge-btn {
    background-color: #f0f7ff;
    color: #2563eb;
    border: 1px solid #2563eb;
    padding: 8px 15px;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.select-recharge-btn:hover {
    background-color: #2563eb;
    color: white;
    transform: translateY(-1px); /* Subtle lift effect */
}

/* 表单样式 */
form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #4b5563;
}

input[type="email"], input[type="password"], input[type="text"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input[type="email"]:focus, input[type="password"]:focus, input[type="text"]:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-actions {
    margin-top: 30px;
    text-align: center;
}

.form-actions p {
    margin-top: 15px;
    font-size: 0.95rem;
    color: #6b7280;
}

.form-actions a {
    color: #2563eb;
    text-decoration: none;
}

.error-message {
    margin-top: 20px;
    padding: 10px 15px;
    background-color: #fee2e2;
    border-left: 4px solid #ef4444;
    color: #b91c1c;
    border-radius: 4px;
    display: none;
}

/* 页脚样式 */
footer {
    background-color: #1a202c;
    color: #e2e8f0;
    padding: 20px 0;
    text-align: center;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: #fff;
    margin: 15% auto;
    padding: 30px;
    border-radius: 10px; /* Slightly more rounded */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); /* Softer shadow */
    max-width: 500px;
    position: relative;
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #6b7280;
}

.close-modal:hover {
    color: #1a202c;
}

#alert-message {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: #4b5563;
}

#alert-ok {
    display: block;
    margin: 0 auto;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    nav .nav-content {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        margin-top: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 5px 10px;
    }
    
    .language-selector {
        margin-left: 0;
    }
    
    #language-select {
        padding: 4px 8px;
        font-size: 13px;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .section, .active-section {
        padding: 20px;
    }
    
    .upload-box {
        padding: 20px;
    }
    
    .recharge-options-grid {
        grid-template-columns: 1fr;
    }
}