/* リセットとベース設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* ヘッダー */
header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

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

.logo-title {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 50px;
    height: 50px;
    transition: transform 0.3s;
}

.logo:hover {
    transform: rotate(360deg);
}

header h1 {
    font-size: 1.8rem;
    font-weight: bold;
}

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

nav a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

nav a:hover {
    color: #3498db;
}

/* ヒーローセクション */
#hero {
    background: url('images/hero-background.png') center/cover no-repeat;
    padding: 6rem 0;
    text-align: center;
    position: relative;
}

#hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

#hero p {
    font-size: 1.2rem;
    color: white;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* セクション共通 */
section {
    padding: 4rem 0;
}

section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    color: #2c3e50;
    position: relative;
    padding-bottom: 1rem;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, #667eea, #764ba2);
}

/* 会社概要 */
#about {
    background-color: #f8f9fa;
}

.company-info table {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.company-info th,
.company-info td {
    padding: 1.2rem;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.company-info th {
    background-color: #667eea;
    color: white;
    font-weight: 600;
    width: 30%;
}

.company-info tr:last-child th,
.company-info tr:last-child td {
    border-bottom: none;
}

/* 事業内容 */
.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.business-item {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    overflow: hidden;
}

.business-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.business-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

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

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

.business-item h3 {
    color: #2c3e50;
    margin: 1.5rem 0 1rem;
    padding: 0 2rem;
    font-size: 1.3rem;
}

.business-item p {
    color: #666;
    line-height: 1.8;
    padding: 0 2rem 2rem;
}

/* お問い合わせ */
#contact {
    background-color: #f8f9fa;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-info-box {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    height: fit-content;
}

.info-item {
    margin-bottom: 2rem;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item h3 {
    color: #2c3e50;
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.info-item p {
    color: #495057;
    line-height: 1.8;
}

.info-item a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s;
}

.info-item a:hover {
    color: #764ba2;
    text-decoration: underline;
}

.contact-form-box {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.contact-form-box h3 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

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

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-weight: 600;
}

.contact-form .required {
    color: #e74c3c;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #667eea;
}

.contact-form textarea {
    resize: vertical;
}

.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 3rem;
    font-size: 1.1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* フッター */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

footer p {
    opacity: 0.9;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        gap: 1rem;
    }

    #hero h2 {
        font-size: 1.8rem;
    }

    #hero p {
        font-size: 1rem;
    }

    section h2 {
        font-size: 1.6rem;
    }

    .company-info table {
        font-size: 0.9rem;
    }

    .company-info th,
    .company-info td {
        padding: 0.8rem;
        display: block;
        width: 100%;
    }

    .company-info th {
        background-color: #667eea;
        border-bottom: none;
    }

    .company-info td {
        background-color: white;
        margin-bottom: 1rem;
    }

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

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