/* 基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #5cb85c;
    --secondary-color: #4cae4c;
    --accent-color: #f0f8f0;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-white: #ffffff;
    --bg-light: #f9fdf9;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    color: var(--text-dark);
    line-height: 1.7;
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー */
.header {
    background-color: var(--bg-white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
    padding: 8px 15px;
}

.nav-list a:hover {
    color: var(--primary-color);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    transition: all 0.3s;
}

/* メインビジュアル */
.hero {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 80px;
}

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

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7);
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(92, 184, 92, 0.5), rgba(76, 174, 76, 0.3));
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--bg-white);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

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

/* セクション共通 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--text-dark);
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

/* 会社概要 */
.about {
    background-color: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.about-item {
    background-color: var(--bg-white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.about-item.full-width {
    grid-column: 1 / -1;
}

.about-label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.about-text {
    color: var(--text-dark);
    font-size: 1.05rem;
}

/* 事業内容 */
.services {
    background-color: var(--bg-white);
}

.services-list {
    display: flex;
    flex-direction: column;
    gap: 80px;
    margin-top: 60px;
}

.service-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.service-item.reverse {
    direction: rtl;
}

.service-item.reverse > * {
    direction: ltr;
}

.service-image {
    width: 100%;
    height: 400px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.service-content {
    padding: 20px;
}

.service-title {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 20px;
    position: relative;
    padding-left: 20px;
}

.service-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 80%;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

.service-description {
    color: var(--text-light);
    font-size: 1.05rem;
    margin-bottom: 25px;
    line-height: 1.8;
}

.service-features {
    list-style: none;
    padding: 0;
}

.service-features li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-dark);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

/* お問い合わせ */
.contact {
    background-color: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    margin-top: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-info-item {
    background-color: var(--bg-white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 20px;
}

.contact-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.contact-info-text h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.contact-detail {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 5px;
}

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

/* フォーム */
.contact-form {
    background-color: var(--bg-white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 500;
}

.required {
    color: #e74c3c;
    margin-left: 3px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

.form-submit {
    text-align: center;
    margin-top: 30px;
}

.form-submit .btn {
    min-width: 200px;
}

/* フッター */
.footer {
    background-color: var(--text-dark);
    color: var(--bg-white);
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-logo img {
    height: 60px;
    filter: brightness(0) invert(1);
}

.footer-info p {
    margin: 5px 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        background-color: var(--bg-white);
        transition: left 0.3s;
        box-shadow: var(--shadow);
    }

    .nav.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        padding: 20px;
        gap: 0;
    }

    .nav-list a {
        display: block;
        padding: 15px;
        border-bottom: 1px solid var(--border-color);
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }

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

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

    .hero {
        height: 400px;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-item,
    .service-item.reverse {
        grid-template-columns: 1fr;
        gap: 30px;
        direction: ltr;
    }

    .service-image {
        height: 300px;
    }

    .service-title {
        font-size: 1.5rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-form {
        padding: 30px 20px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    section {
        padding: 60px 0;
    }

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

    .section-title {
        font-size: 1.7rem;
    }

    .btn {
        padding: 12px 30px;
        font-size: 0.95rem;
    }

    .service-image {
        height: 250px;
    }

    .contact-info-item {
        padding: 20px;
    }

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