/* 通用样式文件 - 所有页面共享的基础样式 */

/* 现代简洁设计系统 */
:root {
    /* 主色彩系统 - 更明亮轻快的色调 */
    --primary: #3B82F6;
    --primary-light: #60A5FA;
    --primary-dark: #2563EB;
    --secondary: #8B5CF6;
    --accent: #F59E0B;
    
    /* 中性色彩系统 - 更明亮轻快 */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* 背景色彩 */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    
    /* 文字色彩 */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-400);
    
    /* 边框色彩 */
    --border-light: var(--gray-200);
    --border-medium: var(--gray-300);
    --border-dark: var(--gray-400);
    
    /* 阴影系统 - 更明亮轻快的阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(59, 130, 246, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(59, 130, 246, 0.15), 0 2px 4px -1px rgba(59, 130, 246, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(59, 130, 246, 0.15), 0 4px 6px -2px rgba(59, 130, 246, 0.08);
    --shadow-xl: 0 20px 25px -5px rgba(59, 130, 246, 0.15), 0 10px 10px -5px rgba(59, 130, 246, 0.06);
    
    /* 圆角系统 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 间距系统 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* 字体系统 */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    --font-size-5xl: 48px;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* 响应式断点 */
    --breakpoint-xs: 480px;
    --breakpoint-sm: 768px;
    --breakpoint-md: 992px;
    --breakpoint-lg: 1200px;
    --breakpoint-xl: 1400px;
}

/* 暗黑模式CSS变量定义 - 现代简洁风格 */
[data-theme="dark"] {
    /* 主色彩系统 - 更明亮轻快 */
    --primary: #60A5FA;
    --primary-light: #93C5FD;
    --primary-dark: #3B82F6;
    --secondary: #A78BFA;
    --accent: #FBBF24;
    
    /* 中性色彩系统 - 暗黑模式 */
    --white: #0F172A;
    --gray-50: #1E293B;
    --gray-100: #334155;
    --gray-200: #475569;
    --gray-300: #64748B;
    --gray-400: #94A3B8;
    --gray-500: #CBD5E1;
    --gray-600: #E2E8F0;
    --gray-700: #F1F5F9;
    --gray-800: #F8FAFC;
    --gray-900: #FFFFFF;
    
    /* 背景色彩 */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    
    /* 文字色彩 */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-400);
    
    /* 边框色彩 */
    --border-light: var(--gray-200);
    --border-medium: var(--gray-300);
    --border-dark: var(--gray-400);
}

/* 暗黑模式下的认证按钮样式 */
[data-theme="dark"] .btn-login {
    background: var(--white);
    color: var(--primary);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .btn-login:hover {
    background: var(--sketch-border);
    color: var(--light);
}

[data-theme="dark"] .btn-register {
    background: var(--primary-dark);
    color: var(--light);
    border-color: var(--primary-dark);
}

[data-theme="dark"] .btn-register:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
}

[data-theme="dark"] .btn-write {
    background: var(--white);
    color: var(--secondary);
    border-color: var(--secondary);
    box-shadow: var(--shadow-sm);
}

/* 暗黑模式下的用户菜单样式 */
[data-theme="dark"] .user-avatar-wrapper {
    background: var(--gray);
    border-color: var(--sketch-border);
}

[data-theme="dark"] .user-avatar-wrapper:hover {
    background: var(--dark-gray);
}

[data-theme="dark"] .user-avatar {
    background: var(--primary-light);
}

[data-theme="dark"] .username {
    color: var(--sketch-border);
}

[data-theme="dark"] .dropdown-icon {
    color: var(--sketch-border);
}

[data-theme="dark"] .user-dropdown {
    background: var(--tech-bg);
    border-color: var(--sketch-border);
}

[data-theme="dark"] .user-info {
    border-bottom-color: var(--gray);
}

[data-theme="dark"] .user-avatar-large {
    background: var(--primary-light);
}

[data-theme="dark"] .user-details .username {
    color: var(--sketch-border);
}

[data-theme="dark"] .user-email {
    color: var(--dark-gray);
}

[data-theme="dark"] .dropdown-item {
    color: var(--sketch-border);
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--light-gray);
    color: var(--primary-light);
}

[data-theme="dark"] .logout-btn {
    color: #f87171;
}

[data-theme="dark"] .logout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* 科技感背景元素 */
.tech-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--gray) 1px, transparent 1px),
        linear-gradient(90deg, var(--gray) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    animation: gridMove 20s linear infinite;
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

.tech-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.tech-particles::before {
    content: '';
    position: absolute;
    width: 1px;
    height: 1px;
    background: #cbd5e1;
    box-shadow: 
        100px 200px #cbd5e1,
        300px 150px #e2e8f0,
        500px 300px #f1f5f9,
        700px 100px #cbd5e1,
        900px 250px #e2e8f0,
        200px 400px #f1f5f9,
        600px 350px #cbd5e1,
        800px 200px #e2e8f0,
        400px 100px #f1f5f9;
    animation: particleFloat 15s ease-in-out infinite;
}

.tech-element {
    position: fixed;
    z-index: -1;
    opacity: 0.03;
}

.tech-element.circle {
    width: 200px;
    height: 200px;
    border: 1px solid rgba(148, 163, 184, 0.15);
    border-radius: 50%;
    top: -100px;
    right: -100px;
    animation: rotate 30s linear infinite;
}

.tech-element.triangle {
    width: 0;
    height: 0;
    border-left: 100px solid transparent;
    border-right: 100px solid transparent;
    border-bottom: 170px solid rgba(148, 163, 184, 0.08);
    bottom: -85px;
    left: -50px;
    transform: rotate(15deg);
    animation: float 20s ease-in-out infinite;
}

/* 移动菜单按钮样式 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--sketch-border);
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
    transition: all 0.3s ease;
}

/* 导航栏样式 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 40px;
    background: var(--tech-bg);
    border: 2px solid var(--sketch-border);
    border-radius: 0 0 12px 12px;
    box-shadow: 4px 4px 0 var(--sketch-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transform: skew(-1deg);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* 导航栏右侧区域 */
.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* 认证区域 */
.auth-section {
    display: flex;
    align-items: center;
}

.auth-buttons {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

/* 登录注册按钮 */
.btn-login, .btn-register {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    border: 2px solid;
    transform: rotate(-1deg);
}

.btn-login {
    background: transparent;
    color: var(--sketch-border);
    border-color: var(--sketch-border);
}

.btn-login:hover {
    background: var(--primary-light);
    color: var(--white);
    transform: rotate(1deg) translateY(-2px);
    box-shadow: 3px 3px 0 var(--sketch-shadow);
}

.btn-register {
    background: var(--white);
    color: var(--primary);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.btn-register:hover {
    background: var(--primary-light);
    color: var(--white);
    border-color: var(--primary-light);
    transform: rotate(1deg) translateY(-2px);
    box-shadow: 3px 3px 0 var(--sketch-shadow);
}

.btn-login i, .btn-register i {
    font-size: 14px;
}

/* 用户区域 */
.user-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.quick-actions {
    display: flex;
    align-items: center;
}

.btn-write {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--white);
    color: var(--secondary);
    border: 2px solid var(--secondary);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    transform: rotate(-1deg);
    box-shadow: var(--shadow-sm);
}

.btn-write:hover {
    background: var(--secondary);
    color: var(--white);
    border-color: var(--secondary);
    transform: rotate(1deg) translateY(-2px);
    box-shadow: 3px 3px 0 var(--sketch-shadow);
}

/* 用户菜单 */
.user-menu {
    position: relative;
}

.user-avatar-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--light-gray);
    border: 2px solid var(--sketch-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    transform: rotate(-1deg);
}

.user-avatar-wrapper:hover {
    background: var(--gray);
    transform: rotate(1deg) translateY(-2px);
    box-shadow: 3px 3px 0 var(--sketch-shadow);
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light);
    font-size: 14px;
}

.user-avatar i {
    transform: rotate(2deg);
}

.username {
    font-weight: 600;
    font-size: 14px;
    color: var(--sketch-border);
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropdown-icon {
    font-size: 12px;
    color: var(--sketch-border);
    transition: transform 0.3s ease;
}

.dropdown-icon.rotated {
    transform: rotate(180deg);
}

/* 用户下拉菜单 */
.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 220px;
    background: var(--tech-bg);
    border: 2px solid var(--sketch-border);
    border-radius: 12px;
    box-shadow: 4px 4px 0 var(--sketch-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) rotate(-1deg);
    transition: all 0.3s ease;
    z-index: 1001;
}

.user-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) rotate(0deg);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--gray);
}

.user-avatar-large {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light);
    font-size: 18px;
}

.user-details {
    flex: 1;
}

.user-details .username {
    font-weight: 700;
    font-size: 16px;
    color: var(--sketch-border);
    margin-bottom: 2px;
}

.user-email {
    font-size: 12px;
    color: var(--dark-gray);
    opacity: 0.8;
}

.dropdown-divider {
    height: 1px;
    background: var(--gray);
    margin: 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    color: var(--sketch-border);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: var(--light-gray);
    color: var(--primary-light);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
    font-size: 14px;
}

.logout-btn {
    background: none;
    border: none;
    cursor: pointer;
    width: 100%;
    text-align: left;
    color: #ef4444;
}

.logout-btn:hover {
    background: #fef2f2;
    color: #dc2626;
}

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

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    border: 2px solid var(--sketch-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    transform: rotate(-2deg);
    box-shadow: 3px 3px 0 var(--sketch-shadow);
}

.logo-icon i {
    font-size: 22px;
    color: #FFFFFF;
    transform: rotate(2deg);
}

.logo-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--sketch-border);
    letter-spacing: 0.5px;
    transform: rotate(-1deg);
    transition: color 0.3s ease;
}

.logo-text span {
    color: var(--primary-light);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-link {
    color: var(--sketch-border);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    padding: 8px 16px;
    border: 2px solid transparent;
    border-radius: 8px;
    transition: all 0.2s ease;
    position: relative;
    transform: rotate(-1deg);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-light);
    border-color: var(--sketch-border);
    background: var(--light-gray);
    box-shadow: 3px 3px 0 var(--sketch-shadow);
    transform: rotate(1deg) translateY(-2px);
}

/* 动画效果 - 统一动画定义 */
@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

@keyframes particleFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

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

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(15deg); }
    50% { transform: translateY(-20px) rotate(15deg); }
}

/* 暗黑模式切换按钮样式 */
.theme-toggle {
    background: var(--tech-bg);
    border: 2px solid var(--sketch-border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 3px 3px 0 var(--sketch-shadow);
    transform: rotate(-2deg);
}

.theme-toggle:hover {
    transform: rotate(2deg) translateY(-2px);
    box-shadow: 4px 4px 0 var(--sketch-shadow);
}

.theme-toggle i {
    font-size: 18px;
    color: var(--sketch-border);
    transition: color 0.3s ease;
}

/* 主题切换容器样式 */
.theme-toggle-container {
    position: fixed;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.theme-toggle-container .theme-toggle {
    margin-left: 0;
    margin-bottom: 0;
}

/* 响应式设计 - 已统一移至responsive.css */

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

@keyframes float {
    0%, 100% { transform: rotate(15deg) translateY(0px); }
    50% { transform: rotate(15deg) translateY(-15px); }
}

/* 响应式设计 - 已统一移至responsive.css */