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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.nav-logo h2 {
    color: white;
    font-size: 1.8rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主要内容区域 */
.main-content {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
}

.page {
    display: block;
    padding: 1rem;
    max-width: 100%;
    margin: 0 auto;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: white;
    margin: 6% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 520px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    animation: slideIn 0.3s ease;
}

.modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.9rem 1.25rem;
    border-radius: 15px 15px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.close {
    color: white;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.close:hover {
    opacity: 0.7;
}

.modal-body {
    padding: 1.25rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.auth-form .form-group {
    display: flex;
    flex-direction: column;
}

.auth-form label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.auth-form input {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.auth-form input:focus {
    outline: none;
    border-color: #667eea;
}

.auth-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.6rem 0.9rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.auth-switch {
    text-align: center;
    margin-top: 1rem;
}

.auth-switch a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* 通用按钮样式 */
.btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 通用表单样式 */
.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group select,
.form-group input {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

/* 通用卡片样式 */
.card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateY(-50px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #667eea;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .page {
        padding: 1rem;
    }

    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }

    .modal-body {
        padding: 1rem;
    }
}

/* 行内表单布局（验证码行） */
.form-inline {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}
.form-inline .inline-grow {
    flex: 1 1 auto;
}
.form-inline .inline-auto {
    flex: 0 0 auto;
}

/* 下载进度悬浮框样式 */
.download-progress-container {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 350px;
    max-height: 400px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    border: 1px solid #e0e0e0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.download-progress-container.collapsed {
    max-height: 50px;
}

.download-progress-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.download-progress-header h4 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
}

.download-progress-header h4 i {
    margin-right: 8px;
}

.toggle-btn {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.download-progress-list {
    max-height: 320px;
    overflow-y: auto;
    padding: 8px;
}

.download-progress-item {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.download-progress-item:last-child {
    margin-bottom: 0;
}

.download-progress-item.downloading {
    border-left: 4px solid #007bff;
}

.download-progress-item.success {
    border-left: 4px solid #28a745;
    background: #f8fff9;
}

.download-progress-item.error {
    border-left: 4px solid #dc3545;
    background: #fff8f8;
}

.download-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.download-progress-filename {
    font-weight: 600;
    color: #333;
    font-size: 13px;
    flex: 1;
    margin-right: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.download-progress-status {
    font-size: 12px;
    color: #666;
    flex-shrink: 0;
}

.download-progress-bar {
    width: 100%;
    height: 6px;
    background-color: #e9ecef;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.download-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #007bff, #0056b3);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

.download-progress-fill.success {
    background: linear-gradient(90deg, #28a745, #1e7e34);
}

.download-progress-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.download-progress-btn {
    padding: 4px 8px;
    border: none;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.download-progress-btn.open-folder {
    background: #28a745;
    color: white;
}

.download-progress-btn.open-folder:hover {
    background: #1e7e34;
}

.download-progress-btn.retry {
    background: #ffc107;
    color: #212529;
}

.download-progress-btn.retry:hover {
    background: #e0a800;
}

.download-progress-btn.remove {
    background: #6c757d;
    color: white;
}

.download-progress-btn.remove:hover {
    background: #545b62;
}

.download-progress-error {
    color: #dc3545;
    font-size: 12px;
    margin-top: 4px;
    padding: 4px 8px;
    background: #f8d7da;
    border-radius: 4px;
    border: 1px solid #f5c6cb;
}

/* 滚动条样式 */
.download-progress-list::-webkit-scrollbar {
    width: 6px;
}

.download-progress-list::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.download-progress-list::-webkit-scrollbar-thumb {
background: #c1c1c1;
border-radius: 3px;
}

.download-progress-list::-webkit-scrollbar-thumb:hover {
background: #a8a8a8;
}

.contact-footer {
    background-color: #000000;
    color: #ffffff;
    padding: 20px 0;
}

.contact-footer-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    font-size: 14px;
}

.contact-footer-left span + span {
    margin-left: 24px;
}

.contact-footer-right {
display: flex;
align-items: center;
gap: 6px;
font-size: 14px;
}

.contact-footer-right .fa-qq,
.contact-footer-right .fa-brands.fa-qq {
font-size: 18px;
}

@media (max-width: 768px) {
.contact-footer-inner {
flex-direction: column;
gap: 6px;
text-align: center;
}
}