/* ============================================
   匠精灵广告标识 - 专业布局系统
   版本: 2.0.0
   创建时间: 2026年3月14日
   目标: 统一、整洁、专业的网站布局
============================================ */

/* ===== 重置和基础设置 ===== */
:root {
    /* 布局变量 */
    --container-width: 1200px;
    --container-padding: 1.5rem;
    --section-spacing: 4rem;
    --element-spacing: 2rem;
    --card-spacing: 1.5rem;
    
    /* 响应式断点 */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    
    /* 层级 */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ===== 容器系统 ===== */
.layout-container {
    width: 100%;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.layout-container-fluid {
    width: 100%;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* ===== 间距系统 ===== */
.layout-section {
    padding-top: var(--section-spacing);
    padding-bottom: var(--section-spacing);
}

.layout-section-sm {
    padding-top: calc(var(--section-spacing) * 0.5);
    padding-bottom: calc(var(--section-spacing) * 0.5);
}

.layout-section-lg {
    padding-top: calc(var(--section-spacing) * 1.5);
    padding-bottom: calc(var(--section-spacing) * 1.5);
}

.layout-section-xl {
    padding-top: calc(var(--section-spacing) * 2);
    padding-bottom: calc(var(--section-spacing) * 2);
}

/* ===== 网格系统 ===== */
.layout-grid {
    display: grid;
    gap: var(--element-spacing);
}

.layout-grid-2 {
    grid-template-columns: repeat(1, 1fr);
}

.layout-grid-3 {
    grid-template-columns: repeat(1, 1fr);
}

.layout-grid-4 {
    grid-template-columns: repeat(1, 1fr);
}

/* 响应式网格 */
@media (min-width: 768px) {
    .layout-grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .layout-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .layout-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .layout-grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .layout-grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== 卡片系统 ===== */
.layout-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--card-spacing);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.layout-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.layout-card-header {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--neutral-200);
}

.layout-card-body {
    flex: 1;
}

.layout-card-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--neutral-200);
}

/* ===== 导航栏系统 ===== */
.layout-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--neutral-200);
    transition: all 0.3s ease;
}

.layout-navbar.scrolled {
    background: white;
    box-shadow: var(--shadow-md);
}

.layout-navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

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

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

.layout-navbar-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.layout-navbar-link {
    color: var(--neutral-700);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.layout-navbar-link:hover {
    color: var(--brand-primary);
}

.layout-navbar-link.active {
    color: var(--brand-primary);
}

.layout-navbar-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--brand-primary);
    border-radius: 1px;
}

.layout-navbar-cta {
    background: var(--brand-primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.layout-navbar-cta:hover {
    background: var(--brand-primary-dark);
    transform: translateY(-2px);
}

/* ===== 英雄区域系统 ===== */
.layout-hero {
    padding-top: 100px;
    padding-bottom: var(--section-spacing);
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
    color: white;
    position: relative;
    overflow: hidden;
}

.layout-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.1)"/></svg>');
    background-size: cover;
    opacity: 0.1;
}

.layout-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.layout-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.layout-hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* ===== 页脚系统 ===== */
.layout-footer {
    background: var(--neutral-900);
    color: white;
    padding-top: var(--section-spacing);
    padding-bottom: 2rem;
}

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

@media (min-width: 768px) {
    .layout-footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .layout-footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

.layout-footer-section {
    display: flex;
    flex-direction: column;
}

.layout-footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.layout-footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.layout-footer-links a {
    color: var(--neutral-400);
    text-decoration: none;
    transition: color 0.3s ease;
}

.layout-footer-links a:hover {
    color: white;
}

.layout-footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--neutral-800);
    text-align: center;
    color: var(--neutral-500);
    font-size: 0.875rem;
}

/* ===== 工具类 ===== */
.layout-text-center { text-align: center; }
.layout-text-left { text-align: left; }
.layout-text-right { text-align: right; }

.layout-mt-0 { margin-top: 0; }
.layout-mt-1 { margin-top: 0.25rem; }
.layout-mt-2 { margin-top: 0.5rem; }
.layout-mt-3 { margin-top: 0.75rem; }
.layout-mt-4 { margin-top: 1rem; }
.layout-mt-6 { margin-top: 1.5rem; }
.layout-mt-8 { margin-top: 2rem; }

.layout-mb-0 { margin-bottom: 0; }
.layout-mb-1 { margin-bottom: 0.25rem; }
.layout-mb-2 { margin-bottom: 0.5rem; }
.layout-mb-3 { margin-bottom: 0.75rem; }
.layout-mb-4 { margin-bottom: 1rem; }
.layout-mb-6 { margin-bottom: 1.5rem; }
.layout-mb-8 { margin-bottom: 2rem; }

.layout-py-0 { padding-top: 0; padding-bottom: 0; }
.layout-py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.layout-py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.layout-py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.layout-py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.layout-py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.layout-py-8 { padding-top: 2rem; padding-bottom: 2rem; }

.layout-px-0 { padding-left: 0; padding-right: 0; }
.layout-px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.layout-px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.layout-px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.layout-px-4 { padding-left: 1rem; padding-right: 1rem; }
.layout-px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.layout-px-8 { padding-left: 2rem; padding-right: 2rem; }

/* ===== 响应式工具 ===== */
@media (max-width: 767px) {
    .layout-mobile-hidden { display: none !important; }
    .layout-mobile-block { display: block !important; }
    .layout-mobile-flex { display: flex !important; }
    .layout-mobile-grid { display: grid !important; }
    
    .layout-hero-title {
        font-size: 2.5rem;
    }
    
    .layout-hero-subtitle {
        font-size: 1.125rem;
    }
    
    .layout-navbar-menu {
        display: none;
    }
    
    .layout-navbar-mobile-menu {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
        z-index: var(--z-dropdown);
    }
}

@media (min-width: 768px) {
    .layout-desktop-hidden { display: none !important; }
    .layout-desktop-block { display: block !important; }
    .layout-desktop-flex { display: flex !important; }
    .layout-desktop-grid { display: grid !important; }
    
    .layout-navbar-mobile-menu {
        display: none;
    }
}

/* ===== 动画系统 ===== */
.layout-fade-in {
    animation: layoutFadeIn 0.6s ease-out;
}

.layout-slide-up {
    animation: layoutSlideUp 0.6s ease-out;
}

.layout-scale-in {
    animation: layoutScaleIn 0.4s ease-out;
}

@keyframes layoutFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes layoutSlideUp {
    from { 
        opacity: 0;
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes layoutScaleIn {
    from { 
        opacity: 0;
        transform: scale(0.95);
    }
    to { 
        opacity: 1;
        transform: scale(1);
    }
}

/* ===== 特殊组件 ===== */
.layout-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--brand-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.layout-divider {
    height: 1px;
    background: var(--neutral-200);
    margin: 2rem 0;
}

.layout-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
}

/* ===== 打印优化 ===== */
@media print {
    .layout-navbar,
    .layout-footer,
    .layout-hero {
        display: none;
    }
    
    .layout-container {
        max-width: 100%;
        padding: 0;
    }
    
    .layout-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}