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

:root {
    --primary-color: #4FC3F7;
    --primary-dark: #0288D1;
    --primary-light: #B3E5FC;
    --secondary-color: #00BCD4;
    --text-dark: #263238;
    --text-light: #546E7A;
    --bg-light: #F5FAFE;
    --white: #FFFFFF;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(79, 195, 247, 0.3);
}

html {
    scroll-behavior: smooth;
}

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

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

/* ヘッダー・ナビゲーション */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar {
    padding: 0.8rem 0;
}

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

.logo a {
    display: block;
    line-height: 0;
}

.logo img {
    height: 70px;
    width: auto;
    object-fit: contain;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

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

.nav-menu a.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.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 ease;
}

/* メインビジュアル */
.hero {
    position: relative;
    height: 70vh;
    margin-top: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(179, 229, 252, 0.95) 0%, rgba(79, 195, 247, 0.9) 50%, rgba(2, 136, 209, 0.9) 100%), url('../images/hero-background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    font-weight: 300;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><circle cx="100" cy="100" r="50" fill="rgba(255,255,255,0.1)"/><circle cx="900" cy="400" r="80" fill="rgba(255,255,255,0.1)"/><circle cx="1100" cy="150" r="60" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.5;
}

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

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    background-color: var(--primary-dark);
    color: var(--white);
}

/* セクション共通スタイル */
.section {
    padding: 5rem 0;
}

.section-alt {
    background-color: var(--bg-light);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-color), var(--primary-dark));
    border-radius: 2px;
}

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

/* 会社概要 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-top: 3rem;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-dark);
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.9;
}

.about-text p strong {
    color: var(--text-dark);
    font-weight: 700;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.placeholder-image {
    width: 100%;
    height: 350px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.placeholder-image i {
    font-size: 5rem;
    color: var(--white);
    opacity: 0.8;
}

/* サービス */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon i {
    font-size: 2rem;
    color: var(--white);
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 代表者紹介 */
.ceo-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 4rem;
    align-items: flex-start;
    margin-top: 3rem;
}

.ceo-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ceo-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.ceo-image .placeholder-image {
    width: 100%;
    height: 400px;
    border-radius: 10px;
}

.ceo-image .placeholder-image i {
    font-size: 6rem;
}

.ceo-text h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--text-light);
    font-weight: 500;
}

.ceo-name {
    font-size: 2rem;
    color: var(--text-dark);
    font-weight: 700;
    margin-left: 0.5rem;
    display: block;
    margin-top: 0.5rem;
}

.ceo-location {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ceo-location::before {
    content: '\f3c5';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--primary-color);
}

.ceo-message p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.9;
    font-size: 1rem;
}

.ceo-certification {
    margin-top: 1.5rem !important;
    margin-bottom: 1.5rem !important;
    padding-left: 1rem;
    position: relative;
}

.ceo-certification::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.dx-advisor-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1rem;
    font-weight: normal;
    transition: color 0.3s ease;
}

.dx-advisor-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.ceo-signature {
    text-align: right;
    font-weight: 500;
    color: var(--text-dark) !important;
    margin-top: 2rem !important;
    font-size: 1.1rem !important;
}

/* 企業情報 */
.company-info-list {
    max-width: 800px;
    margin: 3rem auto 0;
}

.info-list {
    background-color: var(--white);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.info-list dt {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-top: 2rem;
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
}

.info-list dt:first-of-type {
    margin-top: 0;
}

.info-list dt::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

.info-list dd {
    color: var(--text-light);
    line-height: 1.8;
    padding-left: 1.5rem;
    margin-bottom: 0;
}

.company-name-en {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-style: italic;
}

.partner-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.partner-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* お問い合わせ */
.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 {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-top: 0.2rem;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-item p {
    color: var(--text-light);
    margin-bottom: 0.3rem;
}

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

.contact-form {
    background-color: var(--bg-light);
    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;
}

.required {
    color: #E53935;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #E0E0E0;
    border-radius: 5px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
}

/* フッター */
.footer {
    background-color: var(--text-dark);
    color: var(--white);
    padding: 2rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.footer-nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.footer-nav a {
    color: #B0BEC5;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(79, 195, 247, 0.2);
    border-radius: 50%;
    color: var(--primary-light);
    transition: all 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #B0BEC5;
    font-size: 0.9rem;
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease;
        box-shadow: var(--shadow);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu a {
        display: block;
        padding: 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

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

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

    .ceo-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .ceo-image .placeholder-image {
        height: 300px;
    }

    .info-list {
        padding: 2rem 1.5rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
    }

    .footer-nav {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

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

    .section {
        padding: 3rem 0;
    }

    .ceo-image .placeholder-image {
        height: 250px;
    }

    .ceo-image .placeholder-image i {
        font-size: 4rem;
    }
}