/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 主题变量 - 默认浅色主题 */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --background-color: #ffffff;
    --text-color: #333333;
    --text-secondary-color: #666666;
    --border-color: #e9ecef;
    --card-background: #ffffff;
    --card-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.1);
    --header-background: #ffffff;
    --header-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    --footer-background: #f8f9fa;
    --footer-text-color: #6c757d;
    --transition-speed: 0.3s;
    --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* 深色主题变量 */
[data-theme="dark"] {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --background-color: #1a1a1a;
    --text-color: #ffffff;
    --text-secondary-color: #b0b0b0;
    --border-color: #333333;
    --card-background: #2d2d2d;
    --card-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.3);
    --header-background: #2d2d2d;
    --header-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    --footer-background: #2d2d2d;
    --footer-text-color: #b0b0b0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 卡片样式 */
.card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    transition: all var(--transition-speed) var(--transition-easing);
    box-shadow: var(--card-shadow);
    transform: translateY(0);
    opacity: 1;
    animation: fadeInUp 0.6s var(--transition-easing);
}

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

/* 淡入上移动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 淡入动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-color);
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.5rem;
    color: var(--text-color);
    position: relative;
    padding-bottom: 8px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.9rem;
}

input[type="text"],
input[type="password"],
input[type="number"],
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    font-family: inherit;
    background-color: var(--background-color);
    color: var(--text-color);
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.1);
}

textarea {
    resize: vertical;
    min-height: 150px;
    font-family: 'Courier New', Courier, monospace;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: 1px solid transparent;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-easing);
    text-align: center;
    vertical-align: middle;
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s var(--transition-easing), height 0.6s var(--transition-easing);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
}

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

/* 确保黑暗模式下按钮文本颜色为白色 */
[data-theme="dark"] .btn-primary,
[data-theme="dark"] .btn-danger {
    color: white;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
    text-decoration: none;
    color: white;
}

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

.btn-secondary:hover {
    background-color: rgba(0, 123, 255, 0.05);
    border-color: var(--primary-color);
    text-decoration: none;
}

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

.btn-danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
    text-decoration: none;
    color: white;
}

/* 按钮组 */
.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

/* 链接样式 */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #0056b3;
    text-decoration: underline;
}

/* 错误和成功消息 */
.error {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    border-left: 3px solid var(--danger-color);
}

.success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    border-left: 3px solid var(--success-color);
}

/* 头部样式 */
.header {
    background: var(--header-background);
    box-shadow: var(--header-shadow);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-color);
}

.header-logo img {
    height: 40px;
    width: auto;
}

.header-logo h1 {
    font-size: 1.25rem;
    margin: 0;
    font-weight: 600;
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-speed) var(--transition-easing);
}

.mobile-menu-btn:hover {
    background-color: rgba(0, 123, 255, 0.05);
    border-color: var(--primary-color);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
}

/* 主题切换按钮 */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 10px 16px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--transition-speed) var(--transition-easing);
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    transform: rotate(0);
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 123, 255, 0.1), transparent);
    transition: left 0.6s var(--transition-easing);
}

.theme-toggle:hover::before {
    left: 100%;
}

.theme-toggle:hover {
    background-color: rgba(0, 123, 255, 0.05);
    border-color: var(--primary-color);
    transform: rotate(3deg);
}

/* 链接样式 */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all var(--transition-speed) var(--transition-easing);
    position: relative;
    display: inline-block;
}

a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-speed) var(--transition-easing);
}

a:hover {
    color: #0056b3;
    transform: translateY(-1px);
}

a:hover::after {
    width: 100%;
}

/* 登录注册页面 */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-container {
    max-width: 420px;
    width: 100%;
    text-align: center;
}

.auth-logo {
    margin-bottom: 24px;
    animation: pulse 2s infinite;
}

/* 脉冲动画 */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.auth-logo img {
    height: 80px;
    width: auto;
}

/* 首页样式 */
.main-page {
    padding: 32px 0;
}

.project-form {
    margin-bottom: 32px;
    animation-delay: 0.1s;
}

.project-list {
    margin-top: 32px;
    animation-delay: 0.2s;
}

.project-item {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    transition: all var(--transition-speed) var(--transition-easing);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transform: translateX(0);
    opacity: 1;
    animation: slideInLeft 0.5s var(--transition-easing);
}

.project-item:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateX(5px) translateY(-3px);
}

/* 滑入动画 */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 表单元素焦点动画 */
input[type="text"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
    transform: translateY(-1px);
}

.project-info h3 {
    margin: 0 0 6px 0;
    font-size: 1.1rem;
}

.project-url {
    color: var(--text-secondary-color);
    font-size: 0.85rem;
}

/* 编辑器页面 */
.editor-page {
    padding: 32px 0;
}

.editor-container {
    max-width: 1200px;
    margin: 0 auto;
}

.editor-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.editor-content {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    box-shadow: var(--card-shadow);
}

/* 404页面 */
.error-404 {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
}

.error-404 .error-code {
    font-size: 6rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.error-404 .error-message {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.error-404 .error-submessage {
    color: var(--text-secondary-color);
    font-size: 1rem;
    margin-bottom: 32px;
}

.error-404 .logo-section {
    margin: 32px 0;
}

.error-404 .logo-section img {
    height: 120px;
    width: auto;
}

/* 页脚样式 */
.footer {
    background: var(--footer-background);
    color: var(--footer-text-color);
    padding: 32px 0 16px;
    margin-top: 48px;
    transition: all 0.3s ease;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
    margin-bottom: 24px;
}

.footer-logo {
    flex: 1 1 200px;
}

.footer-logo img {
    height: 50px;
    margin-bottom: 12px;
}

.footer-links {
    flex: 1 1 200px;
}

.footer-links h3 {
    color: var(--text-color);
    font-size: 1rem;
    margin-bottom: 12px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--footer-text-color);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.9rem;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
    text-align: center;
    font-size: 0.85rem;
}

/* 响应式设计 */

/* 小屏幕手机 (360px以下) */
@media (max-width: 360px) {
    h1 {
        font-size: 1.25rem;
    }
    
    h2 {
        font-size: 1.1rem;
    }
    
    .header-logo h1 {
        font-size: 1rem;
    }
    
    .header-logo img {
        height: 32px;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .hero p {
        font-size: 0.9rem;
    }
    
    .service-item {
        padding: 20px 15px;
    }
    
    .service-item i {
        font-size: 2rem;
    }
    
    .price {
        font-size: 2rem;
    }
    
    .error-404 .error-code {
        font-size: 3rem;
    }
}

/* 大屏幕手机 (361px - 767px) */
@media (min-width: 361px) and (max-width: 767px) {
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.25rem;
    }
    
    .header .container {
        flex-direction: row;
        gap: 12px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .header-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--header-background);
        box-shadow: var(--header-shadow);
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 20px;
        border-top: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
    }
    
    .header-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .project-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .btn-group {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .error-404 .error-code {
        font-size: 4rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
    }
}

/* 平板 (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .header .container {
        flex-direction: row;
    }
    
    .header-nav {
        flex-direction: row;
        align-items: center;
        gap: 15px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .footer-logo,
    .footer-links {
        flex: 1 1 calc(50% - 12px);
    }
}

/* 小屏幕电脑 (1024px - 1199px) */
@media (min-width: 1024px) and (max-width: 1199px) {
    .container {
        max-width: 960px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 大屏幕电脑 (1200px以上) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }
    
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(0, 123, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 辅助类 */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 4px;
}

.mt-2 {
    margin-top: 8px;
}

.mt-3 {
    margin-top: 16px;
}

.mb-1 {
    margin-bottom: 4px;
}

.mb-2 {
    margin-bottom: 8px;
}

.mb-3 {
    margin-bottom: 16px;
}

/* ==================== 公共组件增强 ==================== */

/* 移动端菜单图标 */
.menu-icon {
    font-style: normal;
    line-height: 1;
}

/* 头部导航内的表单（退出登录按钮） */
.nav-form {
    display: inline-flex;
    margin: 0;
}

.nav-form .nav-link-btn {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    color: var(--primary-color);
    font-size: 0.95rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: color 0.3s ease;
}

.nav-form .nav-link-btn:hover {
    color: #0056b3;
    text-decoration: underline;
}

/* 用户欢迎语 */
.user-welcome {
    color: var(--text-secondary-color);
    font-size: 0.9rem;
    white-space: nowrap;
}

/* 公告栏 */
.announcement {
    background: rgba(0, 123, 255, 0.06);
    border-left: 3px solid var(--primary-color);
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    line-height: 1.7;
}

/* 副标题说明文字 */
.p-title {
    color: var(--text-secondary-color);
    font-size: 0.95rem;
}

/* 管理员徽章 */
.admin-badge {
    display: inline-block;
    font-size: 0.7rem;
    background: #ffc107;
    color: #333;
    border-radius: 4px;
    padding: 1px 6px;
    margin-left: 6px;
    vertical-align: middle;
}

.text-danger {
    color: var(--danger-color);
}

.text-muted {
    color: var(--text-secondary-color);
}

/* 键盘可达性焦点环 */
a:focus-visible,
.btn:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 按钮禁用态 */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* 小尺寸按钮 */
.btn-sm {
    padding: 6px 12px;
    font-size: 0.82rem;
}

/* ==================== 响应式修复与增强 ==================== */

/* 767px 及以下（含 360px 小屏）都显示移动端菜单按钮 */
@media (max-width: 767px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-form {
        width: 100%;
    }
}

/* 360px 及以下：同样使用折叠式导航 */
@media (max-width: 360px) {
    .header-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--header-background);
        box-shadow: var(--header-shadow);
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 20px;
        border-top: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
    }

    .header-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .user-welcome {
        white-space: normal;
        word-break: break-all;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
    }
}