/* ========================================
   地域の水道屋さん - メインスタイルシート
   ======================================== */

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

:root {
    /* カラーパレット - 親しみやすい青系+オレンジ系 */
    --primary-color: #2563EB;        /* 青（信頼感） */
    --primary-dark: #1E40AF;
    --primary-light: #3B82F6;
    --secondary-color: #F97316;      /* オレンジ（温かみ） */
    --secondary-dark: #EA580C;
    --emergency-color: #DC2626;      /* 緊急用赤 */
    --success-color: #10B981;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --border-color: #E5E7EB;
    
    /* タイポグラフィ */
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.7;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* ボックスシャドウ */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* ブレークポイント */
    --mobile: 480px;
    --tablet: 768px;
    --desktop: 1024px;
    --wide: 1280px;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== コンテナ ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== ヘッダー ===== */
.header {
    position: sticky;
    top: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.header-top {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) 0;
    font-size: 0.875rem;
}

.header-info {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header-info span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar {
    padding: var(--spacing-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
}

.logo i {
    font-size: 2rem;
    color: var(--primary-color);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-size: 1.25rem;
    line-height: 1.2;
}

.logo-sub {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 0.375rem;
    transition: all 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background: var(--bg-light);
}

.nav-cta {
    background: var(--primary-color) !important;
    color: white !important;
    padding: var(--spacing-xs) var(--spacing-md) !important;
}

.nav-cta:hover {
    background: var(--primary-dark) !important;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 0.125rem;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* ===== ヒーローセクション ===== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-2xl) var(--spacing-md);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><path d="M0 50 Q 25 40, 50 50 T 100 50" stroke="rgba(255,255,255,0.1)" stroke-width="2" fill="none"/></svg>');
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    display: block;
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.hero-features {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    font-size: 1.125rem;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.hero-feature i {
    color: var(--success-color);
}

/* ===== ボタン ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    min-width: 44px;
    min-height: 44px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.btn-emergency {
    background: var(--emergency-color);
    color: white;
    font-size: 1.25rem;
    padding: 1rem 2rem;
}

.btn-emergency:hover {
    background: #B91C1C;
    transform: scale(1.05);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-subtext {
    display: block;
    font-size: 0.875rem;
    font-weight: 400;
    opacity: 0.9;
}

/* ===== 緊急連絡バナー ===== */
.emergency-banner {
    background: var(--emergency-color);
    color: white;
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
}

.emergency-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.emergency-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.emergency-text i {
    font-size: 2rem;
}

.emergency-text strong {
    display: block;
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.emergency-text span {
    display: block;
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ===== セクション共通 ===== */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ===== 対応エリア ===== */
.area-section {
    background: var(--bg-light);
}

.area-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.area-item {
    background: white;
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    text-align: center;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.area-item i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.area-note {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ===== サービスカード ===== */
.services-section {
    background: white;
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.service-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
}

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

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

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

.service-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease;
}

.service-link:hover {
    gap: 0.75rem;
}

/* ===== 選ばれる理由 ===== */
.reasons-section {
    background: var(--bg-light);
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.reason-item {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: all 0.3s ease;
}

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

.reason-number {
    position: absolute;
    top: -15px;
    left: var(--spacing-md);
    background: var(--secondary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
}

.reason-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin: var(--spacing-md) 0;
    text-align: center;
}

.reason-item h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.reason-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== 取扱いメーカー ===== */
.makers-section {
    background: white;
}

.makers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.maker-item {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: 0.5rem;
    text-align: center;
    font-weight: 600;
    font-size: 1.125rem;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.maker-item:hover {
    border-color: var(--primary-color);
    background: white;
    transform: scale(1.05);
}

/* ===== CTAセクション ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

.cta-content > p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.cta-buttons .btn {
    flex-direction: column;
    min-width: 200px;
}

.cta-info {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    flex-wrap: wrap;
    font-size: 1.125rem;
}

.cta-info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cta-info-item a {
    color: white;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

.cta-info-item a:hover {
    border-bottom-color: white;
}

/* ===== フッター ===== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--secondary-color);
}

.footer-company {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    line-height: 1.8;
    opacity: 0.9;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    opacity: 1;
    color: var(--secondary-color);
    padding-left: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* ===== フローティング電話ボタン ===== */
.floating-call-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: var(--emergency-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-xl);
    z-index: 999;
    text-decoration: none;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.floating-call-btn:hover {
    transform: scale(1.1);
    background: #B91C1C;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.7);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(220, 38, 38, 0);
    }
}

/* ===== ユーティリティクラス ===== */
.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: var(--spacing-lg);
}

/* ===== レスポンシブ ===== */
@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transition: left 0.3s ease;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-base: 14px;
    }
    
    .hero {
        min-height: 500px;
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .emergency-content {
        flex-direction: column;
        text-align: center;
    }
    
    .emergency-text {
        flex-direction: column;
        text-align: center;
    }
    
    .service-cards,
    .reasons-grid,
    .area-grid,
    .makers-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .floating-call-btn {
        width: 55px;
        height: 55px;
        bottom: 15px;
        right: 15px;
    }
}

@media (max-width: 480px) {
    .header-info {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .logo-main {
        font-size: 1rem;
    }
    
    .logo i {
        font-size: 1.5rem;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
}

/* ===== 施工事例画像（ウォーターマーク対策） ===== */
.case-image-single {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 0.75rem;
    margin-bottom: var(--spacing-md);
}

.case-image-single img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* 右下のウォーターマークを隠す */
.case-image-single::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, transparent 30%, white 30%);
    pointer-events: none;
}

/* ===== パンくずリスト ===== */
.breadcrumb {
    background-color: var(--bg-light);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

.breadcrumb .container {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

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

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

.breadcrumb .separator {
    color: var(--text-secondary);
    margin: 0 var(--spacing-xs);
}

.breadcrumb span:not(.separator) {
    color: var(--text-primary);
    font-weight: 500;
}

/* ===== FAQ ===== */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: var(--bg-light);
}

.faq-question h3 {
    flex: 1;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.faq-question i.fa-question-circle {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.faq-question .faq-icon {
    color: var(--text-secondary);
    transition: transform 0.3s ease;
    font-size: 1rem;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: var(--bg-light);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
}

.faq-answer p,
.faq-answer ul {
    padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-answer p:first-child {
    padding-top: var(--spacing-md);
}

.faq-answer ul {
    padding-left: calc(var(--spacing-lg) + 1.5rem);
    padding-right: var(--spacing-lg);
}

.faq-answer ul li {
    margin-bottom: var(--spacing-xs);
}

.faq-answer strong {
    color: var(--primary-color);
    font-weight: 600;
}

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

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

/* レスポンシブ対応 - FAQ & Breadcrumb */
@media (max-width: 768px) {
    .breadcrumb {
        font-size: 0.75rem;
    }
    
    .faq-question {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .faq-question h3 {
        font-size: 1rem;
    }
    
    .faq-question i.fa-question-circle {
        font-size: 1.25rem;
    }
    
    .faq-answer p,
    .faq-answer ul {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .faq-answer ul {
        padding-left: calc(var(--spacing-md) + 1.5rem);
    }
}