/* === 基本スタイル === */
:root {
    /* カラースキーム */
    --color-bg-primary: #121212;
    --color-bg-secondary: #1a1a1a;
    --color-text-primary: #f5f5f5;
    --color-text-secondary: #b3b3b3;
    --color-accent: #d4af37; /* ゴールドアクセント */
    --color-blue-accent: #0a84ff;
    --color-button: #d4af37;
    --color-button-hover: #f5c542;
    
    /* フォント */
    --font-primary: 'Poppins', 'Noto Sans JP', sans-serif;
    --font-secondary: 'Noto Sans JP', sans-serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* アニメーション */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* === レイアウト === */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.section {
    min-height: 100vh;
    padding: var(--spacing-lg) var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
}

/* コンパクトセクションヘッダー */
.section-header.compact {
    margin-bottom: var(--spacing-md);
}

.section-header.compact h2 {
    font-size: 2.2rem;
}

/* === ヘッダー === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(5px);
    z-index: 100;
    transition: var(--transition-normal);
}

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

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

.nav ul li {
    margin-left: var(--spacing-md);
}

.nav ul li a {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.nav ul li a:hover {
    color: var(--color-accent);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.menu-toggle span {
    height: 3px;
    width: 100%;
    background-color: var(--color-text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* === ヒーローセクション === */
.hero-section {
    background-image: linear-gradient(rgba(18, 18, 18, 0.8), rgba(18, 18, 18, 0.9)), url('/api/placeholder/1920/1080');
    background-size: cover;
    background-position: center;
    text-align: center;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
}

.highlight {
    color: var(--color-accent);
}

.cta-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-button);
    color: var(--color-bg-primary);
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.cta-button:hover {
    background-color: var(--color-button-hover);
    transform: translateY(-2px);
}

/* スクロールインジケーターの強化 */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: bounce 2s infinite;
    z-index: 10; /* 重なり順序を上げる */
}

.scroll-indicator span {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-secondary);
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-text-secondary);
    border-bottom: 2px solid var(--color-text-secondary);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* === サービスセクション === */
.services-section {
    background-color: var(--color-bg-secondary);
}

.services-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: var(--spacing-md);
    flex: 1 1 300px;
    max-width: 350px;
    transition: var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(212, 175, 55, 0.3);
}

.service-icon {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.service-icon img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 50%;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.service-card p {
    color: var(--color-text-secondary);
    text-align: center;
}

/* === 専門性セクション === */
.expertise-section {
    background-color: var(--color-bg-primary);
}

.expertise-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    gap: var(--spacing-lg);
}

.expertise-content {
    flex: 1 1 600px;
}

.qualifications {
    margin-bottom: var(--spacing-lg);
}

.qualifications h3, .case-studies h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: var(--spacing-sm);
    border-left: 3px solid var(--color-accent);
}

.qualifications ul {
    list-style: none;
}

.qualifications ul li {
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
}

.qualifications ul li span.highlight {
    margin-right: var(--spacing-xs);
    font-size: 0.8rem;
}

.case-studies {
    margin-bottom: var(--spacing-md);
}

.case-study {
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    transition: var(--transition-fast);
}

.case-study:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.case-study h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-accent);
}

.case-study p {
    color: var(--color-text-secondary);
}

.expertise-image {
    flex: 1 1 400px;
    display: flex;
    justify-content: center;
}

.expertise-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

/* === 問い合わせ・フッターの統合セクション === */
.contact-footer-section {
    min-height: auto;
    background-color: var(--color-bg-secondary);
    padding: 0;
    display: block;
}

.contact-footer-container {
    display: flex;
    flex-direction: column;
}

/* === 問い合わせセクション === */
.contact-section {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    position: relative;
}

.form-container {
    max-width: 800px;
    width: 90%;
    margin: 0 auto;
}

/* フォーム行のレイアウト */
.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.form-row .form-group {
    flex: 1 1 45%;
}

.contact-form {
    display: flex;
    flex-direction: column;
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: calc(var(--spacing-xs) / 2);
    font-weight: 500;
    font-size: 0.9rem;
}

.required {
    color: var(--color-accent);
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 0.7rem;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    transition: var(--transition-fast);
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background-color: rgba(255, 255, 255, 0.15);
}

.submit-button {
    padding: 0.8rem var(--spacing-md);
    margin-top: 0.5rem;
    background-color: var(--color-accent);
    color: var(--color-bg-primary);
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    align-self: center;
    width: 100%;
}

.submit-button:hover {
    background-color: var(--color-button-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(212, 175, 55, 0.3);
}

.form-success {
    text-align: center;
    padding: var(--spacing-sm);
}

.form-success p {
    font-size: 1.2rem;
    color: var(--color-accent);
}

.hidden {
    display: none;
}

/* フォーム検証のスタイル */
.form-error {
    color: #ff6b6b;
    font-size: 0.8rem;
    margin-top: 0.2rem;
}

/* === フッター === */
.footer {
    background-color: #0a0a0a;
    padding: var(--spacing-md);
    position: relative;
    overflow: hidden;
    border-top: 2px solid var(--color-accent);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    margin-bottom: var(--spacing-sm);
}

.footer-info {
    flex: 1 1 auto;
}

.footer-info h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
}

.footer-info address {
    font-style: normal;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.visit-counter {
    flex: 0 1 auto;
    text-align: right;
}

.visit-counter p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

#counter {
    color: var(--color-accent);
    font-weight: 700;
}

.copyright {
    text-align: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* プレースホルダー画像のスタイル */
.placeholder-image {
    background-color: rgba(255, 255, 255, 0.1);
    object-fit: cover;
}

/* セクション全体の調整 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
    padding-top: var(--spacing-sm);
}

/* セクション移行のスムーズさを強化 */
.section {
    scroll-snap-align: start;
    padding-bottom: var(--spacing-md);
}

/* アプリコンテナの調整 */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    scroll-snap-type: y mandatory;
}