/* style.css */
/* 基础样式和变量 */

@charset 'utf-8';

@import url('https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c:wght@400;700&family=Noto+Sans+JP:wght@400;500;700&family=Roboto:ital,wght@1,900&display=swap');

:root {
    --primary-color: #8B4513;
    --secondary-color: #D2B48C;
    --accent-color: #C19A6B;
    --light-color: #F5F5DC;
    --dark-color: #3E2723;
    --text-color: #333;
    --white: #fff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', 'Helvetica', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

section {
    padding: 10px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.2rem;
    color: var(--dark-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--accent-color);
    margin: 15px auto;
}

/* 导航栏样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

header.scrolled {
    padding: 5px 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    transition: var(--transition);
}

header.scrolled .navbar {
    padding: 10px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
}

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    font-size: 0.9rem;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger div {
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    margin: 5px;
    transition: var(--transition);
}

/* 英雄区域和轮播图 */
.hero {
    height: 75vh;
    position: relative;
    overflow: hidden;
    margin-top: 0px;
}

.slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 20px;
    transform: translateY(30px);
    opacity: 0;
    transition: all 0.8s ease 0.3s;
}

.slide.active .slide-content {
    transform: translateY(0);
    opacity: 1;
}

.slide-content h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
}

.slide-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.slide-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.5);
    margin: 0 8px;
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active {
    background-color: var(--white);
    transform: scale(1.2);
}

/* カテゴリー別に探す */
.categories {
    background-color: var(--white);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.category-card {
    background: var(--white);
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.category-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: var(--light-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.category-card h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
    font-size: 1.3rem;
}

.category-card p {
    color: #666;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* 選べる 3つの買取方法 */
.methods {
    background-color: var(--light-color);
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.method-card {
    background: var(--white);
    border-radius: 8px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.method-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.method-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.method-card h3 {
    margin-bottom: 20px;
    color: var(--dark-color);
    font-size: 1.5rem;
}

.method-card p {
    margin-bottom: 20px;
    color: #666;
}

.method-card ul {
    text-align: left;
    margin-bottom: 25px;
}

.method-card li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.method-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* 買取ガイド */
.guide {
    background-color: var(--white);
}

.guide-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.step-number {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.guide-faq h3 {
    margin-bottom: 20px;
    color: var(--dark-color);
    font-size: 1.5rem;
}

.faq-item {
    border-bottom: 1px solid #eee;
    margin-bottom: 15px;
}

.faq-question {
    padding: 15px 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
}

.faq-question svg {
    transition: var(--transition);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 15px;
}

/* 服务卡片 */
.services {
    background-color: var(--light-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.service-img {
    height: 200px;
    background-color: var(--secondary-color);
    background-size: cover;
    background-position: center;
}

.service-content {
    padding: 25px;
}

.service-content h3 {
    margin-bottom: 15px;
    color: var(--dark-color);
    font-size: 1.4rem;
}

/* CTA区域 */
.cta {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 100px 0;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
    background-color: var(--dark-color);
}

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

}

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

.btn-small {
    padding: 8px 20px;
    font-size: 0.9rem;
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

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

.cta .btn:hover {
    background-color: var(--light-color);
}

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

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

.ripple {
    position: absolute;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.7);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
    z-index: 999;
}

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

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

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    margin-bottom: 20px;
    font-size: 1.3rem;
    color: var(--secondary-color);
}

.footer-links li {
    margin-bottom: 10px;
}

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

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .guide-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .slide-content h2 {
        font-size: 2.5rem;
    }
    
    .nav-links li {
        margin-left: 15px;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 15px 0;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 80%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 50px;
        transition: var(--transition);
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links li {
        margin: 0 0 30px 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active div:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .hamburger.active div:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active div:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .slide-content h2 {
        font-size: 2rem;
    }
    
    .slide-content p {
        font-size: 1rem;
    }
    
    .categories-grid,
    .methods-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        align-self: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 576px) {
    .section-title {
        font-size: 1.6rem;
    }
    
    .slide-content h2 {
        font-size: 1.8rem;
    }
    
    section {
        padding: 30px 0;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .cta-content p {
        font-size: 1rem;
    }
}