/* ===================================
   Forestia～小镇的牧场生活 - 样式表
   日式乡村风格设计
   =================================== */

/* 基础重置和变量 */
:root {
    /* 主色调 - 日式乡村风格 */
    --color-primary: #8FBC8F;        /* 森林绿 */
    --color-secondary: #D2B48C;      /* 泥土黄 */
    --color-accent: #87CEEB;         /* 河流蓝 */
    --color-wood: #8B4513;           /* 木头棕 */
    --color-light-green: #E8F5E9;    /* 浅绿背景 */
    --color-cream: #FFF8DC;          /* 奶油色 */

    /* 中性色 */
    --color-white: #FFFFFF;
    --color-black: #2C2C2C;
    --color-gray: #666666;
    --color-light-gray: #F5F5F5;

    /* 字体 */
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "微软雅黑", sans-serif;
    --font-heading: "Microsoft YaHei", "微软雅黑", sans-serif;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);

    /* 过渡 */
    --transition: all 0.3s ease;
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--color-black);
    line-height: 1.6;
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #6B8E6B);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-download {
    background: linear-gradient(135deg, var(--color-wood), #A0522D);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

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

/* ===================================
   导航栏样式
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar {
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo img {
    border-radius: 50%;
}

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

.nav-link {
    font-weight: 500;
    color: var(--color-black);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.cta-nav {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-sm);
}

.cta-nav:hover {
    background-color: var(--color-wood);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-black);
    transition: var(--transition);
}

/* ===================================
   Hero区域样式
   =================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(143, 188, 143, 0.7), rgba(139, 69, 19, 0.5));
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--color-white);
    padding: var(--spacing-md);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1.2s ease;
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    animation: fadeInUp 1.4s ease;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1.6s ease;
}

.hero-features {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1.8s ease;
}

.hero-feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.feature-icon {
    font-size: 2rem;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   通用区域样式
   =================================== */
section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-wood);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray);
}

/* ===================================
   About区域样式
   =================================== */
.about {
    background-color: var(--color-light-green);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-text h3 {
    font-size: 1.75rem;
    color: var(--color-wood);
    margin-bottom: var(--spacing-sm);
}

.about-text p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* ===================================
   Features区域样式
   =================================== */
.features {
    background-color: var(--color-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.feature-card {
    background-color: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-image {
    margin-bottom: var(--spacing-sm);
}

.feature-image img {
    border-radius: var(--radius-md);
    width: 100%;
}

.feature-card h3 {
    font-size: 1.5rem;
    color: var(--color-wood);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    line-height: 1.8;
    color: var(--color-gray);
}

/* ===================================
   Gameplay区域样式
   =================================== */
.gameplay {
    background-color: var(--color-light-gray);
}

.gameplay-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.gameplay-item {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.gameplay-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.gameplay-item h3 {
    font-size: 1.75rem;
    color: var(--color-wood);
    margin-bottom: var(--spacing-sm);
}

.gameplay-item p {
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.gameplay-item img {
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
}

/* ===================================
   Characters区域样式
   =================================== */
.characters {
    background-color: var(--color-cream);
}

.characters-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    line-height: 1.8;
}

.characters-highlight {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.characters-highlight h3 {
    font-size: 1.75rem;
    color: var(--color-wood);
    margin-bottom: var(--spacing-sm);
}

.characters-highlight ul {
    list-style: none;
}

.characters-highlight li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
}

/* ===================================
   Guide区域样式
   =================================== */
.guide {
    background-color: var(--color-light-green);
}

.guide-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.guide-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.guide-card h3 {
    font-size: 1.5rem;
    color: var(--color-wood);
    margin-bottom: var(--spacing-sm);
}

.guide-card ol, .guide-card ul {
    padding-left: 1.5rem;
}

.guide-card li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

/* ===================================
   FAQ区域样式
   =================================== */
.faq {
    background-color: var(--color-white);
}

.faq-content {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-light-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-sm);
}

.faq-question {
    font-size: 1.25rem;
    color: var(--color-wood);
    margin-bottom: var(--spacing-sm);
}

.faq-answer p {
    line-height: 1.8;
    color: var(--color-gray);
}

/* ===================================
   Download区域样式
   =================================== */
.download {
    background: linear-gradient(135deg, var(--color-primary), var(--color-wood));
    color: var(--color-white);
}

.download-content {
    text-align: center;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.download-content > p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.download-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.download-info {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    gap: 0.5rem;
}

.info-label {
    font-weight: 600;
}

/* ===================================
   图片画廊样式
   =================================== */
.gallery {
    background-color: var(--color-white);
    padding: var(--spacing-xl) 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-icon {
    font-size: 3rem;
    color: var(--color-white);
}

/* ===================================
   友情链接区域样式
   =================================== */
.friends-links {
    background-color: var(--color-light-gray);
    padding: var(--spacing-lg) 0;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    max-width: 1000px;
    margin: 0 auto;
}

.link-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: var(--spacing-sm);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.link-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    background-color: var(--color-light-green);
}

.link-icon {
    font-size: 1.5rem;
}

.link-name {
    font-weight: 500;
    color: var(--color-black);
}

/* ===================================
   Footer区域样式
   =================================== */
.footer {
    background-color: var(--color-wood);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-section a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.875rem;
}

/* ===================================
   返回顶部按钮
   =================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

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

.back-to-top:hover {
    background-color: var(--color-wood);
    transform: translateY(-5px);
}

/* ===================================
   响应式设计 - 平板设备
   =================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md);
        transition: var(--transition);
        box-shadow: var(--shadow-md);
    }

    .nav-menu.active {
        left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   响应式设计 - 手机设备
   =================================== */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .hero-features {
        gap: var(--spacing-sm);
    }

    .download-buttons {
        flex-direction: column;
    }
}