/* リセットとベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4A90E2;
    --secondary-color: #50C878;
    --accent-color: #FFB84D;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 5px 25px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ヘッダー */
.header {
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo a {
    display: block;
    text-decoration: none;
    transition: opacity 0.3s;
}

.logo a:hover {
    opacity: 0.9;
}

.logo-image {
    height: 50px;
    width: auto;
}

.logo h1 {
    color: var(--bg-white);
    font-size: 1.5rem;
    font-weight: 700;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav a {
    color: var(--bg-white);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.nav a:hover {
    opacity: 0.8;
}

/* ヒーローセクション */
.hero {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.9), rgba(80, 200, 120, 0.9)),
                url('images/hero/hero-bg.png') center/cover;
    min-height: 500px;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-overlay {
    width: 100%;
    padding: 100px 0;
}

.hero-content {
    text-align: center;
    color: var(--bg-white);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    font-weight: 300;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--text-dark);
}

.btn-primary:hover {
    background: #FFA833;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 184, 77, 0.4);
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

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

/* 会社概要セクション */
.about {
    background: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.about-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.about-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.about-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.about-item p {
    color: var(--text-dark);
}

.about-description {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
}

.about-description p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
}

/* 事業内容セクション */
.services {
    background: var(--bg-white);
}

.services-grid {
    display: grid;
    gap: 3rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--bg-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 0;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.service-image {
    background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    min-height: 300px;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

.service-content {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.service-content h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.service-content p {
    color: var(--text-dark);
    line-height: 1.8;
    font-size: 1rem;
}

/* お問い合わせセクション */
.contact {
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    margin-top: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 1.5rem;
    transition: transform 0.3s;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--bg-white);
}

.contact-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-dark);
    line-height: 1.6;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

.contact-item a:hover {
    color: var(--secondary-color);
}

.contact-form {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #E0E0E0;
    border-radius: 8px;
    font-family: 'Noto Sans JP', sans-serif;
    transition: border-color 0.3s;
    font-size: 1rem;
}

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

.contact-form .btn-primary {
    width: 100%;
    margin-top: 1rem;
}

.contact-form .btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* フッター */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    text-align: center;
    padding: 2rem 0;
}

/* レスポンシブデザイン */
@media (max-width: 968px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .service-card {
        grid-template-columns: 1fr;
    }

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

    .nav ul {
        gap: 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .logo-image {
        height: 40px;
    }

    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-title {
        font-size: 1.8rem;
    }

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

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

    .service-content h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .hero {
        min-height: 400px;
    }

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

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

    .btn {
        padding: 0.8rem 2rem;
        font-size: 0.9rem;
    }

    section {
        padding: 50px 0;
    }

    .service-content,
    .contact-form,
    .about-description {
        padding: 1.5rem;
    }
}