/* ========================================
   慕品视觉 - 全局样式文件
   行业：网站建设 | 域名：tiffanyll.com
   风格：烘焙甜品风（浅粉 + 浅黄 + 奶白）
   ======================================== */

/* CSS Reset & 基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.8;
    color: #5a4a42;
    background-color: #fef9f5;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 颜色变量 */
:root {
    --color-pink-light: #fce4ec;
    --color-pink-medium: #f8bbd9;
    --color-pink-deep: #f48fb1;
    --color-yellow-light: #fff8e1;
    --color-yellow-medium: #ffecb3;
    --color-yellow-deep: #ffe082;
    --color-cream: #fef9f5;
    --color-cream-dark: #f5ebe6;
    --color-brown-light: #8d6e63;
    --color-brown-medium: #5d4037;
    --color-brown-deep: #3e2723;
    --color-white: #ffffff;
    --shadow-soft: 0 4px 20px rgba(244, 143, 177, 0.15);
    --shadow-medium: 0 8px 30px rgba(244, 143, 177, 0.25);
    --shadow-strong: 0 12px 40px rgba(244, 143, 177, 0.35);
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease;
}

/* 通用容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.container-narrow {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

.container-wide {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 3%;
}

/* 标题样式 */
.section-title {
    text-align: center;
    font-size: 2.8rem;
    font-weight: 300;
    color: var(--color-brown-deep);
    margin-bottom: 1.5rem;
    position: relative;
    letter-spacing: 3px;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-pink-medium), var(--color-yellow-medium));
    margin: 1.5rem auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-brown-light);
    margin-bottom: 3rem;
    letter-spacing: 2px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 2px;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-pink-medium), var(--color-pink-deep));
    color: var(--color-white);
    border: 2px solid transparent;
    box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(135deg, var(--color-pink-deep), var(--color-pink-medium));
}

.btn-secondary {
    background: transparent;
    color: var(--color-brown-medium);
    border: 2px solid var(--color-pink-medium);
}

.btn-secondary:hover {
    background: var(--color-pink-light);
    color: var(--color-brown-deep);
    transform: translateY(-3px);
}

/* ========================================
   导航栏样式
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all var(--transition-medium);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(254, 249, 245, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-soft);
    padding: 1rem 0;
}

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

.navbar-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-brown-deep);
    letter-spacing: 3px;
}

.navbar-logo span {
    color: var(--color-pink-deep);
}

.navbar-menu {
    display: flex;
    gap: 2.5rem;
}

.navbar-link {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-brown-medium);
    letter-spacing: 1px;
    position: relative;
    padding: 0.5rem 0;
}

.navbar-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-pink-medium), var(--color-yellow-medium));
    transition: width var(--transition-fast);
}

.navbar-link:hover::after,
.navbar-link.active::after {
    width: 100%;
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--color-pink-deep);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--color-brown-medium);
    transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ========================================
   页脚样式
   ======================================== */
.footer {
    background: linear-gradient(135deg, var(--color-cream-dark), var(--color-pink-light));
    padding: 5rem 0 2rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-pink-medium), var(--color-yellow-medium), var(--color-pink-medium));
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.3rem;
    color: var(--color-brown-deep);
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
    position: relative;
    padding-bottom: 0.8rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--color-pink-medium);
}

.footer-section p {
    color: var(--color-brown-light);
    line-height: 2;
    font-size: 0.95rem;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--color-brown-light);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-pink-deep);
    padding-left: 8px;
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
    color: var(--color-brown-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(141, 110, 99, 0.2);
}

.footer-bottom p {
    color: var(--color-brown-light);
    font-size: 0.9rem;
}

/* ========================================
   动画效果
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.zoom-in {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s ease;
}

.zoom-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section-title {
        font-size: 2.3rem;
    }
}

@media (max-width: 768px) {
    .navbar-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--color-cream);
        flex-direction: column;
        padding: 5rem 2rem;
        gap: 1.5rem;
        transition: right var(--transition-medium);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    }
    
    .navbar-menu.active {
        right: 0;
    }
    
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.8rem 2rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .navbar-logo {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .container,
    .container-narrow,
    .container-wide {
        padding: 0 4%;
    }
}