* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

:root {
    --primary: #2563EB;
    --background: #F8FAFC;
    --surface: #FFFFFF;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --accent: #F59E0B;
    --success: #10B981;
    --border: #E2E8F0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-large: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
    background-color: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
}

/* 头部样式优化 */
header {
    background-color: var(--surface);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    padding: 15px 0;
    position: relative;
    z-index: 1000;
}

.header-container {
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--primary);
    margin-right: 30px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), #1D4ED8);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.search-section {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 15px;
}

.search-container {
    flex: 1;
    max-width: 600px;
    position: relative;
    display: flex;
}

.search-box {
    width: 100%;
    padding: 12px 120px 12px 20px;
    border-radius: 24px;
    border: 1px solid var(--border);
    background-color: var(--background);
    font-size: 1rem;
    transition: all 0.3s;
    outline: none;
}

    .search-box:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }

.search-actions {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 5px;
}

.search-engine {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 5px 10px;
    border-radius: 4px;
}

    .search-engine:hover {
        background-color: rgba(0, 0, 0, 0.05);
    }

.search-btn {
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 16px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.2s;
}

    .search-btn:hover {
        background-color: #1D4ED8;
    }

.user-section {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: 20px;
    position: relative;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 6px;
    transition: all 0.2s;
}

    .user-info:hover {
        background-color: rgba(0, 0, 0, 0.05);
    }

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.user-name {
    font-size: 0.9rem;
    color: var(--text-primary);
}
.login-btn {
    background-color: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    border-radius: 6px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

    .login-btn:hover {
        background-color: rgba(37, 99, 235, 0.1);
    }
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    transition: all 0.3s ease;
}

.empty-state {
    text-align: center;
    padding: 40px 0;
}

.add-btn {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background-color: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    margin: 0 auto 20px;
}

    .add-btn:hover {
        transform: scale(1.05);
        box-shadow: var(--shadow-large);
    }

.empty-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 20px;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

.site-card {
    width: 100%;
    aspect-ratio: 1/1.2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    padding: 10px;
}

    .site-card:hover {
        background-color: var(--surface);
        box-shadow: var(--shadow);
        transform: translateY(-5px);
    }

.site-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    transition: all 0.3s;
    overflow: hidden;
    position: relative;
}

.site-card:hover .site-icon {
    transform: scale(1.1);
}

.site-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.fallback-icon {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

.site-name {
    font-size: 0.85rem;
    text-align: center;
    color: var(--text-primary);
    word-break: break-word;
    width: 100%;
}

.menu-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s;
    color: var(--text-secondary);
}

.site-card:hover .menu-btn {
    opacity: 1;
}

.menu-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.dropdown-menu {
    position: absolute;
    top: 30px;
    right: 5px;
    background-color: var(--surface);
    border-radius: 8px;
    box-shadow: var(--shadow-large);
    padding: 8px 0;
    z-index: 10;
    display: none;
    min-width: 120px;
}

    .dropdown-menu.show {
        display: block;
        animation: fadeInUp 0.2s ease-out;
    }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.menu-item {
    padding: 8px 16px;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s;
}

    .menu-item:hover {
        background-color: var(--background);
    }

    .menu-item.edit {
        color: var(--primary);
    }

    .menu-item.delete {
        color: #EF4444;
    }

/* 尾部样式 */
footer {
    background-color: var(--surface);
    border-top: 1px solid var(--border);
    padding: 30px 0 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
    justify-content: center;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

    .footer-link:hover {
        color: var(--primary);
    }

.footer-info {
    text-align: center;
    margin-bottom: 15px;
    line-height: 1.6;
}

.footer-copyright {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    opacity: 0.8;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 100;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background-color: var(--surface);
    width: 90%;
    max-width: 480px;
    border-radius: 12px;
    box-shadow: var(--shadow-large);
    padding: 30px;
    animation: scaleIn 0.3s;
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-header {
    margin-bottom: 20px;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background-color: var(--background);
    font-size: 1rem;
    transition: all 0.3s;
    outline: none;
}

    .form-input:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }

.form-select {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background-color: var(--background);
    font-size: 1rem;
    cursor: pointer;
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 30px;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-size: 1rem;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-secondary);
}

    .btn-secondary:hover {
        background-color: rgba(0, 0, 0, 0.05);
    }

.btn-primary {
    background-color: var(--primary);
    color: white;
}

    .btn-primary:hover {
        background-color: #1D4ED8;
    }

/* 优化的拖拽样式 */
.site-card.dragging {
    opacity: 0.7;
    transform: scale(1.05) rotate(5deg);
    z-index: 100;
    box-shadow: var(--shadow-large);
    transition: transform 0.2s, opacity 0.2s;
}

.site-card.drag-over {
    border: 2px dashed var(--primary);
    background-color: rgba(37, 99, 235, 0.05);
}

.grid-container.drag-active .site-card:not(.dragging) {
    transition: transform 0.3s ease;
}

/* 搜索引擎下拉菜单 */
.engine-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--surface);
    border-radius: 8px;
    box-shadow: var(--shadow-large);
    padding: 8px 0;
    z-index: 10;
    display: none;
    min-width: 150px;
    margin-top: 5px;
}

    .engine-dropdown.show {
        display: block;
        animation: fadeInUp 0.2s ease-out;
    }

.engine-option {
    padding: 8px 16px;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s;
}

    .engine-option:hover {
        background-color: var(--background);
    }

    .engine-option.active {
        color: var(--primary);
        font-weight: 500;
    }

/* 用户下拉菜单 */
.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--surface);
    border-radius: 8px;
    box-shadow: var(--shadow-large);
    padding: 8px 0;
    z-index: 1001;
    display: none;
    min-width: 150px;
    margin-top: 5px;
}

    .user-dropdown.show {
        display: block;
        animation: fadeInUp 0.2s ease-out;
    }

.user-menu-item {
    padding: 8px 16px;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s;
}

    .user-menu-item:hover {
        background-color: var(--background);
    }
/* 验证码输入样式 */
.verification-group {
    display: flex;
    gap: 10px;
}

.verification-input {
    flex: 1;
}

.verification-btn {
    white-space: nowrap;
    min-width: 120px;
}

/* 登录选项样式 */
.login-options {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.login-option {
    padding: 10px 20px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    flex: 1;
    text-align: center;
}

    .login-option.active {
        border-bottom: 2px solid var(--primary);
        color: var(--primary);
        font-weight: 500;
    }

.login-form {
    display: none;
}

    .login-form.active {
        display: block;
    }

/* 表单错误样式 */
.form-error {
    color: #EF4444;
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
}

.form-input.error {
    border-color: #EF4444;
}

/* 注册链接样式 */
.register-link {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
}

    .register-link a {
        color: var(--primary);
        text-decoration: none;
        font-weight: 500;
    }

        .register-link a:hover {
            text-decoration: underline;
        }

/* 密码强度指示器 */
.password-strength {
    margin-top: 5px;
    height: 4px;
    border-radius: 2px;
    background-color: var(--border);
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    width: 0;
    transition: all 0.3s;
}

.strength-weak {
    background-color: #EF4444;
    width: 33%;
}

.strength-medium {
    background-color: #F59E0B;
    width: 66%;
}

.strength-strong {
    background-color: #10B981;
    width: 100%;
}

/* 密码可见性切换 */
.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--text-secondary);
}

.password-container {
    position: relative;
}
/* Responsive adjustments */
@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
    }

    .logo {
        margin-right: 15px;
    }

    .search-section {
        order: 3;
        width: 100%;
        margin-top: 15px;
    }

    .user-section {
        margin-left: auto;
    }

    .user-name {
        display: none;
    }

    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 15px;
    }

    .site-icon {
        width: 40px;
        height: 40px;
    }

    .site-name {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }

    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        gap: 10px;
    }

    .modal-content {
        padding: 20px;
    }

    .footer-links {
        gap: 10px;
    }

    .search-box {
        padding-right: 100px;
    }

    .search-engine span {
        display: none;
    }
}