/* ==========================================================================
   株式会社グランヴィア - エレガントビジネスランディングページ
   ========================================================================== */

/* リセット & 基本スタイル
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-navy: #1a2d52;
    --primary-gold: #c9a962;
    --primary-white: #ffffff;
    --secondary-navy: #0f1d3a;
    --light-gold: #e4d4a8;
    --light-gray: #f8f9fa;
    --medium-gray: #6c757d;
    --dark-gray: #343a40;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--dark-gray);
    line-height: 1.8;
    overflow-x: hidden;
    background-color: var(--primary-white);
}

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

/* ヘッダー
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(26, 45, 82, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
    font-family: 'Playfair Display', serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-gold);
    letter-spacing: 2px;
    margin-bottom: 2px;
}

.logo-subtitle {
    font-size: 11px;
    color: var(--primary-white);
    letter-spacing: 1px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-link {
    color: var(--primary-white);
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    position: relative;
    transition: var(--transition);
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gold);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-gold);
}

.nav-link:hover::after {
    width: 100%;
}

.cta-button {
    background: linear-gradient(135deg, var(--primary-gold), #b89550);
    color: var(--primary-white);
    border: none;
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(201, 169, 98, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 98, 0.4);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-white);
    transition: var(--transition);
}

/* モバイルメニュー
   ========================================================================== */
.mobile-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: rgba(26, 45, 82, 0.98);
    backdrop-filter: blur(10px);
    z-index: 999;
    transition: var(--transition);
    overflow-y: auto;
}

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

.mobile-menu-list {
    list-style: none;
    padding: 40px 20px;
}

.mobile-menu-list li {
    margin-bottom: 20px;
}

.mobile-nav-link {
    color: var(--primary-white);
    text-decoration: none;
    font-size: 18px;
    font-weight: 400;
    display: block;
    padding: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.mobile-nav-link:hover {
    color: var(--primary-gold);
    padding-left: 25px;
}

/* ヒーローセクション
   ========================================================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-navy), var(--secondary-navy));
    overflow: hidden;
}

.hero::before {
    content: '';
    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 1000 1000"><defs><linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:rgb(201,169,98);stop-opacity:0.1"/><stop offset="100%" style="stop-color:rgb(201,169,98);stop-opacity:0"/></linearGradient></defs><rect width="1000" height="1000" fill="url(%23grad)"/><path d="M0 500 Q 250 400 500 500 T 1000 500 L 1000 1000 L 0 1000 Z" fill="rgba(201,169,98,0.05)"/></svg>');
    background-size: cover;
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(15, 29, 58, 0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--primary-white);
    padding: 0 20px;
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 25px;
    line-height: 1.3;
    letter-spacing: 2px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    font-weight: 300;
    letter-spacing: 1px;
    opacity: 0.95;
}

.hero-cta {
    background: linear-gradient(135deg, var(--primary-gold), #b89550);
    color: var(--primary-white);
    border: 2px solid var(--primary-gold);
    padding: 18px 45px;
    font-size: 18px;
    font-weight: 500;
    border-radius: 35px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 6px 25px rgba(201, 169, 98, 0.4);
}

.hero-cta:hover {
    background: transparent;
    border-color: var(--primary-gold);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(201, 169, 98, 0.5);
}

/* スクロールインジケーター */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-gold);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 10px;
    z-index: 2;
}

.scroll-indicator span {
    width: 4px;
    height: 10px;
    background: var(--primary-gold);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(20px);
        opacity: 0;
    }
}

/* アニメーション */
.fade-in {
    animation: fadeIn 1s ease-out;
}

.fade-in-delay {
    animation: fadeIn 1s ease-out 0.3s backwards;
}

.fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s backwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* セクション共通スタイル
   ========================================================================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--primary-gold);
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.title-underline {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-gold), transparent);
    margin: 0 auto;
}

/* 事業内容セクション
   ========================================================================== */
.services {
    padding: 100px 0;
    background-color: var(--light-gray);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--primary-white);
    padding: 45px 35px;
    border-radius: 10px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border-top: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    border-top-color: var(--primary-gold);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-navy), var(--secondary-navy));
    color: var(--primary-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 35px;
    margin-bottom: 25px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary-gold), #b89550);
    color: var(--primary-white);
    transform: scale(1.1) rotate(5deg);
}

.service-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 20px;
}

.service-description {
    font-size: 15px;
    line-height: 1.8;
    color: var(--medium-gray);
    margin-bottom: 25px;
}

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

.service-features li {
    font-size: 14px;
    color: var(--dark-gray);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-features li i {
    color: var(--primary-gold);
    font-size: 12px;
}

/* 強み・特徴セクション
   ========================================================================== */
.features {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-navy), var(--secondary-navy));
    color: var(--primary-white);
}

.features .section-title {
    color: var(--primary-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.feature-item {
    position: relative;
    padding: 35px 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(201, 169, 98, 0.2);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-gold);
    transform: translateY(-5px);
}

.feature-number {
    font-family: 'Playfair Display', serif;
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-gold);
    opacity: 0.3;
    margin-bottom: 15px;
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--primary-white);
}

.feature-description {
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
}

/* 会社概要セクション
   ========================================================================== */
.company {
    padding: 100px 0;
    background-color: var(--primary-white);
}

.company-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.company-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.company-table tr {
    border-bottom: 1px solid #e9ecef;
}

.company-table th {
    text-align: left;
    padding: 20px 20px 20px 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-navy);
    width: 150px;
    vertical-align: top;
}

.company-table td {
    padding: 20px 0;
    font-size: 15px;
    color: var(--dark-gray);
    line-height: 1.8;
}

.business-list {
    list-style: none;
}

.business-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
}

.business-list li::before {
    content: '▪';
    position: absolute;
    left: 0;
    color: var(--primary-gold);
}

.company-image {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

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

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

/* お問い合わせセクション
   ========================================================================== */
.contact {
    padding: 100px 0;
    background: var(--light-gray);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--medium-gray);
    margin-bottom: 50px;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 30px;
    background: var(--primary-white);
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.contact-item i {
    font-size: 30px;
    color: var(--primary-gold);
}

.contact-item h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: 5px;
}

.contact-item p {
    font-size: 15px;
    color: var(--dark-gray);
}

.contact-button {
    background: linear-gradient(135deg, var(--primary-gold), #b89550);
    color: var(--primary-white);
    border: none;
    padding: 18px 50px;
    font-size: 18px;
    font-weight: 500;
    border-radius: 35px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 6px 25px rgba(201, 169, 98, 0.4);
}

.contact-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(201, 169, 98, 0.5);
}

/* フッター
   ========================================================================== */
.footer {
    background: linear-gradient(135deg, var(--primary-navy), var(--secondary-navy));
    color: var(--primary-white);
    padding: 50px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo h3 {
    font-family: 'Playfair Display', serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-gold);
    letter-spacing: 2px;
    margin-bottom: 5px;
}

.footer-logo p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 1px;
}

.footer-info p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* モーダル
   ========================================================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--primary-white);
    border-radius: 15px;
    padding: 50px;
    max-width: 700px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.4s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--medium-gray);
    cursor: pointer;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.modal-close:hover {
    color: var(--primary-navy);
    background: var(--light-gray);
    transform: rotate(90deg);
}

.modal-title {
    font-family: 'Playfair Display', serif;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 30px;
    text-align: center;
}

/* お問い合わせフォーム
   ========================================================================== */
.contact-form {
    display: block;
}

.contact-form.hidden {
    display: none;
}

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

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: 8px;
}

.form-group label.required::after {
    content: ' *';
    color: #dc3545;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    font-size: 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    transition: var(--transition);
    font-family: 'Noto Sans JP', sans-serif;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.error-message {
    display: block;
    color: #dc3545;
    font-size: 13px;
    margin-top: 5px;
    min-height: 18px;
}

.form-group.error input,
.form-group.error textarea {
    border-color: #dc3545;
}

.submit-button {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-gold), #b89550);
    color: var(--primary-white);
    border: none;
    padding: 15px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 10px;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 98, 0.4);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 送信完了メッセージ
   ========================================================================== */
.success-message {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.success-message.active {
    display: block;
}

.success-message i {
    font-size: 80px;
    color: #28a745;
    margin-bottom: 20px;
}

.success-message h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 15px;
}

.success-message p {
    font-size: 16px;
    color: var(--medium-gray);
    line-height: 1.8;
}

/* レスポンシブデザイン
   ========================================================================== */
@media (max-width: 1024px) {
    .company-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .company-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .cta-button {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .company-table th {
        width: 120px;
        font-size: 14px;
    }
    
    .company-table td {
        font-size: 14px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .modal-content {
        padding: 30px 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .hero-cta {
        padding: 15px 35px;
        font-size: 16px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .modal-title {
        font-size: 24px;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}

/* スクロールアニメーション用のユーティリティクラス
   ========================================================================== */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scroll-animate.animated {
    opacity: 1;
    transform: translateY(0);
}