/**
 * modern.css
 * 海滴智链 - 现代科技风主题样式
 */

/* CSS变量 - 全局样式 */
:root {
    /* 颜色 */
    --color-primary: #3B82F6; /* 主蓝色 */
    --color-primary-light: #60A5FA;
    --color-primary-dark: #1E40AF;
    --color-secondary: #6B7280; /* 辅助灰色 */
    --color-secondary-light: #9CA3AF;
    --color-secondary-dark: #4B5563;
    
    --color-success: #10B981;
    --color-warning: #FBBF24;
    --color-error: #EF4444;
    --color-info: #3B82F6; /* 信息色与主题色一致 */
    
    --color-white: #FFFFFF;
    --color-black: #000000;
    
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    --color-bg-light: var(--color-white);
    --color-bg-dark: var(--color-gray-800);
    --color-text: var(--color-gray-700);
    --color-text-light: var(--color-gray-500);
    --color-text-dark: var(--color-gray-900);
    
    /* 间距 */
    --spacing-xs: 0.25rem; /* 4px */
    --spacing-sm: 0.5rem;  /* 8px */
    --spacing-md: 1rem;    /* 16px */
    --spacing-lg: 1.5rem;  /* 24px */
    --spacing-xl: 2rem;    /* 32px */
    --spacing-2xl: 3rem;   /* 48px */
    --spacing-3xl: 4rem;   /* 64px */
    
    /* 字体 */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: var(--font-family-base);
    --font-family-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    
    --font-size-xs: 0.75rem;   /* 12px */
    --font-size-sm: 0.875rem;  /* 14px */
    --font-size-md: 1rem;      /* 16px */
    --font-size-lg: 1.125rem;  /* 18px */
    --font-size-xl: 1.25rem;   /* 20px */
    --font-size-2xl: 1.5rem;   /* 24px */
    --font-size-3xl: 1.875rem; /* 30px */
    --font-size-4xl: 2.25rem;  /* 36px */
    --font-size-5xl: 3rem;     /* 48px */
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* 边框 */
    --border-radius-sm: 0.25rem; /* 4px */
    --border-radius-md: 0.5rem;  /* 8px */
    --border-radius-lg: 0.75rem; /* 12px */
    --border-radius-xl: 1rem;    /* 16px */
    --border-radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* 过渡 */
    --transition-fast: 150ms;
    --transition-normal: 300ms;
    --transition-slow: 500ms;
    --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 容器 */
    --container-padding: 1rem;
    --container-max-width: 1280px;
    
    /* Z-index */
    --z-index-dropdown: 10;
    --z-index-sticky: 20;
    --z-index-fixed: 30;
    --z-index-modal-backdrop: 40;
    --z-index-modal: 50;
    --z-index-popover: 60;
    --z-index-tooltip: 70;
}

/* 基础重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, video {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast) var(--transition-ease);
}

a:hover {
    color: var(--color-primary-dark);
}

button, input, select, textarea {
    font-family: inherit;
    font-size: 100%;
    line-height: 1.15;
    margin: 0;
}

button, select {
    text-transform: none;
}

button, [type="button"], [type="reset"], [type="submit"] {
    -webkit-appearance: button;
    cursor: pointer;
}

ul, ol {
    list-style: none;
}

/* 布局 */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.main-content {
    min-height: 60vh;
}

/* 排版 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: #ffffff;
    margin-bottom: 0.5em;
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-md);
}

p {
    margin-bottom: 1rem;
}

p:last-child {
    margin-bottom: 0;
}

small {
    font-size: var(--font-size-sm);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1.25rem;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast) var(--transition-ease);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-size-sm);
    border-radius: var(--border-radius-sm);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-lg);
    border-radius: var(--border-radius-lg);
}

.btn-full {
    width: 100%;
}

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

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

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

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

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

.btn-secondary:hover {
    background-color: var(--color-secondary-dark);
    border-color: var(--color-secondary-dark);
}

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

.btn-warning {
    background-color: var(--color-warning);
    color: var(--color-gray-900);
    border-color: var(--color-warning);
}

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

/* 表单 */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

.form-control {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    background-clip: padding-box;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-fast) var(--transition-ease), 
                box-shadow var(--transition-fast) var(--transition-ease);
}

.form-control:focus {
    border-color: var(--color-primary-light);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

.form-control::placeholder {
    color: var(--color-gray-400);
}

.form-check {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.form-check-input {
    margin-right: 0.5rem;
}

/* 头部导航 */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: var(--z-index-fixed);
    transition: all var(--transition-normal) var(--transition-ease);
    border-bottom: 1px solid transparent;
}

.main-header.scrolled {
    /* border-bottom-color: var(--color-gray-200); */
    border-bottom-color: #1c1f2300;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    height: 80px;
}

.logo-container {
    display: flex;
    align-items: center;
    color: var(--color-gray-900);
    text-decoration: none;
}

.logo {
    height: 40px;
    width: auto;
    margin-right: 0.75rem;
}

.logo-text {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
}

.main-nav {
    display: flex;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--color-gray-700);
    font-weight: var(--font-weight-medium);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-link.active {
    color: var(--color-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: var(--border-radius-full);
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-menu-toggle {
    background: transparent !important;
    border: none !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

.mobile-menu-toggle i {
    font-size: 1.25rem !important;
    color: var(--color-gray-600) !important;
}

/* 修复collapse bootstrap样式，避免出现竖线 */
.collapse:not(.show) {
    display: none !important;
}

/* 确保在移动端菜单中不会出现任何意外的竖线 */
#mobileMenu {
    border: none !important;
}

#mobileMenu:before,
#mobileMenu:after {
    display: none !important;
}

/* 确保按钮没有边框 */
.mobile-menu-toggle:focus {
    outline: none !important;
    box-shadow: none !important;
}

/* 确保在页面加载时不会暂时显示竖线 */
.mobile-menu-toggle * {
    border: none !important;
}

/* 移除任何可能的伪元素 */
.mobile-menu-toggle::before,
.mobile-menu-toggle::after {
    display: none !important;
}

/* 将竖线样式完全禁用 */
/* .toggle-bar {
    display: none !important;
} */

/* 移动菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-white);
    z-index: var(--z-index-modal);
    transition: right var(--transition-normal) var(--transition-ease);
    box-shadow: var(--shadow-xl);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    visibility: hidden;
    opacity: 0;
}

.mobile-menu.active {
    right: 0;
    visibility: visible;
    opacity: 1;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--color-gray-500);
    cursor: pointer;
}

.mobile-nav {
    flex: 1;
    margin-bottom: 2rem;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-nav-link {
    color: var(--color-black);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-lg);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-gray-200);
    display: block;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--color-primary);
}

.mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--color-gray-700);
    background-color: transparent;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast) var(--transition-ease);
}

.dropdown-toggle:hover {
    background-color: var(--color-gray-100);
}

.user-menu-btn {
    display: flex;
    align-items: center;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    margin-right: 0.5rem;
}

.user-avatar svg {
    width: 20px;
    height: 20px;
}

.user-name {
    font-weight: var(--font-weight-medium);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    display: none;
    min-width: 200px;
    padding: 0.5rem 0;
    margin-top: 0.5rem;
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-index-dropdown);
}

.dropdown.active .dropdown-menu {
    display: block;
}

.dropdown-menu li a {
    display: block;
    padding: 0.75rem 1.25rem;
    color: var(--color-gray-700);
    transition: background-color var(--transition-fast) var(--transition-ease);
}

.dropdown-menu li a:hover {
    background-color: var(--color-gray-100);
    color: var(--color-gray-900);
}

.dropdown-divider {
    height: 1px;
    margin: 0.5rem 0;
    background-color: var(--color-gray-200);
}

/* 页脚 */
.main-footer {
    background-color: var(--color-gray-800);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--color-gray-700);
    color: var(--color-gray-300);
    position: relative;
    overflow: hidden;
}

/* 添加背景图案 */
.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><path d="M0 10 L0 0 L10 0" stroke="rgba(59, 130, 246, 0.05)" stroke-width="1" fill="none"/><path d="M100 90 L100 100 L90 100" stroke="rgba(59, 130, 246, 0.05)" stroke-width="1" fill="none"/><path d="M0 90 L0 100 L10 100" stroke="rgba(59, 130, 246, 0.05)" stroke-width="1" fill="none"/><path d="M100 10 L100 0 L90 0" stroke="rgba(59, 130, 246, 0.05)" stroke-width="1" fill="none"/></svg>'),
        url('data:image/svg+xml;utf8,<svg width="300" height="300" viewBox="0 0 300 300" xmlns="http://www.w3.org/2000/svg"><circle cx="150" cy="150" r="80" stroke="rgba(59, 130, 246, 0.03)" stroke-width="1" fill="none" /></svg>');
    background-position: 
        center,
        center;
    background-repeat: repeat, no-repeat;
    background-size: 50px, cover;
    opacity: 1;
    z-index: 0;
}

.main-footer .container {
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr) 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-info {
    max-width: 350px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 1.25rem;
    color: var(--color-gray-900);
    text-decoration: none;
}

.footer-description {
    /* color: var(--color-gray-600); */
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-full);
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
    transition: all var(--transition-fast) var(--transition-ease);
}

.social-link:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.footer-heading {
    font-size: var(--font-size-lg);
    margin-bottom: 1.5rem;
    color: #ffffff;
    border-bottom-color: rgba(209, 250, 229, 0.1);
}

.footer-nav li {
    margin-bottom: 0.75rem;
}

.footer-nav li a {
    color: var(--color-gray-300);
    transition: color var(--transition-fast) var(--transition-ease);
}

.footer-nav li a:hover {
    color: var(--color-primary-light);
}

.footer-address {
    margin-bottom: 1.5rem;
    font-style: normal;
    color: var(--color-gray-600);
}

.footer-address p {
    margin-bottom: 0.5rem;
}

.footer-contact-info li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--color-gray-600);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-gray-200);
}

.copyright {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

.footer-bottom-links {
    display: flex;
    gap: 1rem;
}

.footer-bottom-links a {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

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

.separator {
    color: var(--color-gray-400);
    padding: 8px 0;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 5rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-full);
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast) var(--transition-ease);
    z-index: var(--z-index-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 1280px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 2rem;
    }
    
    .footer-info {
        grid-column: span 3;
        max-width: 100%;
    }
}

@media (max-width: 1024px) {
    .container {
        max-width: 100%;
    }
    
    h1 {
        font-size: var(--font-size-3xl);
    }
    
    h2 {
        font-size: var(--font-size-2xl);
    }
    
    h3 {
        font-size: var(--font-size-xl);
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .header-content {
        height: 70px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-info {
        grid-column: span 2;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 640px) {
    h1 {
        font-size: var(--font-size-2xl);
    }
    
    h2 {
        font-size: var(--font-size-xl);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-info {
        grid-column: span 1;
    }
}