/* 基本リセットとグローバルスタイル */
:root {
    --primary-color: #4a6cf7;
    --secondary-color: #f86f03;
    --text-color: #2d3748;
    --text-light: #718096;
    --light-bg: #f8fafc;
    --dark-bg: #1a202c;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --font-jp: 'Noto Sans JP', sans-serif;
    --font-en: 'Poppins', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-jp);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

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

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

section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header h2:after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 16px;
}

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

.btn-primary:hover {
    background: #3951c6;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(74, 108, 247, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--light-bg);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* ヘッダー */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--white);
    box-shadow: var(--shadow);
    padding: 15px 0;
    transition: var(--transition);
}

header.scrolled {
    padding: 10px 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

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

.logo img {
    margin-top: 8px;
    height: 30px;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-weight: 500;
    font-size: 16px;
    position: relative;
}

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

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a:hover:after {
    width: 100%;
}

.menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 2px 0;
    transition: var(--transition);
}

/* ヒーローセクション */
.hero {
    padding: 180px 0 100px;
    background: linear-gradient(135deg, #f6f9ff 0%, #f1f4fd 100%);
    position: relative;
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%234a6cf7' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
    top: 0;
    left: 0;
    opacity: 0.5;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-content {
    flex: 1;
    padding-right: 30px;
}

.hero-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content h2 span {
    color: var(--primary-color);
    position: relative;
}

.hero-content h2 span:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 8px;
    background: rgba(74, 108, 247, 0.2);
    bottom: 5px;
    left: 0;
    z-index: -1;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.shape-1, .shape-2 {
    position: absolute;
    border-radius: 50%;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: rgba(74, 108, 247, 0.1);
    top: -50px;
    right: -50px;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: rgba(248, 111, 3, 0.1);
    bottom: -30px;
    left: 0;
}

.main-image {
    max-width: 80%;
    position: relative;
    z-index: 1;
}

/* サービスセクション */
.services {
    background: var(--white);
}

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

.service-card {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    transition: var(--transition);
    box-shadow: var(--shadow);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: rgba(74, 108, 247, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0 auto 20px;
}

.service-icon i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 特徴セクション */
.features {
    background: var(--light-bg);
    position: relative;
    overflow: hidden;
}

.features:before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(74, 108, 247, 0.05);
    border-radius: 50%;
    top: -150px;
    right: -150px;
}

.features:after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: rgba(248, 111, 3, 0.05);
    border-radius: 50%;
    bottom: -100px;
    left: -100px;
}

.features-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.features-text {
    flex: 1;
    padding-right: 50px;
}

.feature-item {
    margin-bottom: 30px;
    padding-left: 20px;
    border-left: 3px solid var(--primary-color);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateX(5px);
}

.feature-item h3 {
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.feature-item h3 i {
    margin-right: 10px;
    color: var(--primary-color);
}

.feature-item p {
    color: var(--text-light);
}

.features-image {
    flex: 1;
    text-align: center;
}

/* 事例セクション */
.cases {
    background: var(--white);
}

.cases-slider {
    overflow: hidden;
    margin-bottom: 30px;
}

.case {
    display: flex;
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.case-image {
    flex: 1;
    min-height: 300px;
    position: relative;
    overflow: hidden;
}

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

.case:hover .case-image img {
    transform: scale(1.05);
}

.case-content {
    flex: 1;
    padding: 30px;
}

.case-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.case-content p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.case-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.stat {
    text-align: center;
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-en);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

.cases-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.case-nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.case-nav-dot.active,
.case-nav-dot:hover {
    background: var(--primary-color);
}

/* お問い合わせセクション */
.contact {
    background: linear-gradient(135deg, #f6f9ff 0%, #f1f4fd 100%);
    position: relative;
}

.contact-content {
    display: flex;
    gap: 50px;
}

.contact-form {
    flex: 1.5;
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

input, textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    transition: var(--transition);
    font-family: var(--font-jp);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.1);
}

.contact-info {
    flex: 1;
}

.info-item {
    display: flex;
    margin-bottom: 30px;
    align-items: flex-start;
}

.info-item i {
    width: 40px;
    height: 40px;
    background: rgba(74, 108, 247, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    margin-right: 15px;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.info-item p {
    margin: 0;
    color: var(--text-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 40px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

/* フッター */
footer {
    background: var(--dark-bg);
    color: var(--white);
    padding: 70px 0 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    flex: 1;
}

.footer-logo img {
    height: 30px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    max-width: 300px;
}

.footer-links {
    flex: 2;
    display: flex;
    justify-content: space-around;
}

.footer-links-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--white);
    position: relative;
    padding-bottom: 10px;
}

.footer-links-column h3:after {
    content: '';
    position: absolute;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
    bottom: 0;
    left: 0;
}

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

.footer-links-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links-column ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* アニメーション */
@keyframes float {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0);
    }
}

.animate-float {
    animation: float 5s ease-in-out infinite;
}

.animate-text {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.animate-fade-in {
    opacity: 0;
    animation: fadeIn 1s 0.6s forwards;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* レスポンシブデザイン */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
        text-align: center;
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .features-content {
        flex-direction: column;
    }
    
    .features-text {
        padding-right: 0;
        margin-bottom: 50px;
    }
    
    .case {
        flex-direction: column;
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-logo {
        text-align: center;
        margin-bottom: 40px;
    }
    
    .footer-logo p {
        margin: 0 auto;
    }
    
    .footer-links {
        flex-direction: column;
    }
    
    .footer-links-column {
        margin-bottom: 30px;
        text-align: center;
    }
    
    .footer-links-column h3:after {
        left: 50%;
        transform: translateX(-50%);
    }
}

@media (max-width: 768px) {
    .menu-btn {
        display: flex;
    }
    
    nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: 0;
        background: var(--white);
        overflow: hidden;
        transition: var(--transition);
        visibility: hidden;
    }
    
    nav.active {
        height: auto;
        visibility: visible;
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    }
    
    nav ul {
        flex-direction: column;
        padding: 20px;
    }
    
    nav ul li {
        margin: 15px 0;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    section {
        padding: 70px 0;
    }
    
    .service-card, .case {
        margin-bottom: 30px;
    }
    
    form {
        grid-template-columns: 1fr;
    }
}