/* ========================
   プラントライフガイド - スタイルシート
   ======================== */

/* CSS変数定義 */
:root {
    /* カラーパレット - 植物テーマ */
    --primary-green: #4CAF50;
    --primary-dark: #2E7D32;
    --primary-light: #66BB6A;
    --secondary-green: #8BC34A;
    --accent-yellow: #FFEB3B;
    --accent-orange: #FF9800;
    --leaf-green: #689F38;
    --earth-brown: #795548;
    
    /* 背景色 */
    --bg-white: #FFFFFF;
    --bg-light: #F5F9F5;
    --bg-gray: #F0F4F0;
    
    /* テキスト色 */
    --text-primary: #212121;
    --text-secondary: #616161;
    --text-light: #9E9E9E;
    
    /* ボーダー・影 */
    --border-color: #E0E0E0;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    
    /* タイポグラフィ */
    --font-main: 'Noto Sans JP', sans-serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* その他 */
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
    
    /* 緊急度カラー */
    --emergency-critical: #FF3B30;
    --emergency-urgent: #FF9500;
    --emergency-moderate: #FF6B35;
    --emergency-attention: #FFB800;
    --emergency-wilting: #4A90E2;
    --emergency-low: #5AC8FA;
}

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

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

body {
    font-family: var(--font-main);
    color: var(--text-primary);
    background-color: var(--bg-white);
    line-height: 1.7;
    font-weight: 400;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* タイポグラフィ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

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

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.site-header.hidden {
    transform: translateY(-100%);
}

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

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
}

.logo-icon {
    font-size: 2rem;
    margin-right: var(--spacing-xs);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu a {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ヒーローセクション */
.hero-section {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-green) 100%);
    color: white;
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--primary-dark);
}

/* サイトの目的 */
.purpose-section {
    background: var(--bg-light);
}

.purpose-list ul {
    list-style: none;
    max-width: 800px;
    margin: 0 auto;
}

.purpose-list li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background: white;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    position: relative;
    padding-left: 3rem;
}

.purpose-list li:before {
    content: "✓";
    position: absolute;
    left: 1rem;
    color: var(--primary-green);
    font-weight: bold;
    font-size: 1.25rem;
}

/* クイックアクセス */
.quick-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.quick-card {
    background: white;
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.quick-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.quick-card h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.quick-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* ボタン */
.btn-primary, .btn-secondary, .btn-outline {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
}

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

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* ユーザータイプ */
.user-type {
    background: var(--bg-gray);
}

.user-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.user-card {
    background: white;
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.user-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.user-card h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
}

.user-card ul {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.user-card li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: 1.5rem;
}

.user-card li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: bold;
}

/* 植物カテゴリー */
.plant-categories {
    padding: var(--spacing-xxl) 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.category-card {
    background: white;
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.category-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--bg-light), #E8F5E9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.category-card:hover .category-icon {
    transform: scale(1.1);
    background: linear-gradient(135deg, #E8F5E9, #C8E6C9);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.2);
}

.category-icon img {
    width: 60%;
    height: 60%;
    object-fit: contain;
}

.category-card h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.category-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.category-card ul {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.category-card li {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 植物の基本情報 */
.plant-basics {
    background: var(--bg-light);
}

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

.basics-card {
    background: white;
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.basics-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.basics-card h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.basics-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.basics-card ul {
    list-style: none;
}

.basics-card li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.basics-card li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-green);
}

/* ランキング */
.rankings {
    padding: var(--spacing-xxl) 0;
}

.ranking-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.ranking-section {
    background: white;
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.ranking-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-dark);
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
    flex: 1;
}

.ranking-table th {
    background: var(--bg-light);
    padding: var(--spacing-sm);
    text-align: left;
    font-weight: 600;
    color: var(--primary-dark);
    height: 40px;
}

.ranking-table td {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    height: 50px;
    vertical-align: middle;
}

.ranking-table tbody tr {
    transition: var(--transition);
}

.ranking-table tbody tr:hover {
    background: var(--bg-light);
}

.rank-badge {
    display: inline-block;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    border-radius: 50%;
    font-weight: bold;
    background: var(--bg-gray);
}

.rank-badge.gold {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: white;
}

.rank-badge.silver {
    background: linear-gradient(135deg, #C0C0C0, #808080);
    color: white;
}

.rank-badge.bronze {
    background: linear-gradient(135deg, #CD7F32, #8B4513);
    color: white;
}

/* FAQ */
.faq-section {
    background: linear-gradient(135deg, #F8FFF8, #F0F7FF);
    padding: var(--spacing-xxl) 0;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 16px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.faq-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border-color: rgba(76, 175, 80, 0.2);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 1.5rem 2rem;
    background: none;
    border: none;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    position: relative;
}

.faq-question::before {
    content: '❓';
    margin-right: 1rem;
    font-size: 1.3rem;
}

.faq-question:hover {
    background: linear-gradient(135deg, #F0F7F0, #E8F5E9);
    color: var(--primary-dark);
}

.faq-arrow {
    font-size: 1.2rem;
    color: var(--primary-green);
    transition: transform 0.3s ease;
    font-weight: bold;
}

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

.faq-answer {
    padding: 0 2rem 1.5rem;
    background: linear-gradient(135deg, #FEFFFE, #F8FFF8);
    border-top: 1px solid rgba(76, 175, 80, 0.1);
    max-height: 0;
    overflow: hidden;
    transition: all 0.5s ease;
    opacity: 0;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    opacity: 1;
    padding: 1.5rem 2rem 1.5rem;
}

.faq-answer p {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 600;
}

.faq-answer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.faq-answer li {
    position: relative;
    padding: 0.8rem 0 0.8rem 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1rem;
    background: white;
    border-radius: 8px;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.faq-answer li:hover {
    background: #F0F7F0;
    transform: translateX(5px);
    border-left-color: var(--primary-green);
}

.faq-answer li:before {
    content: "✅";
    position: absolute;
    left: 0.8rem;
    top: 0.8rem;
    font-size: 1.1rem;
}

.faq-answer li strong {
    color: var(--primary-dark);
    font-weight: 700;
}

.faq-item.active .faq-question {
    background: linear-gradient(135deg, #E8F5E9, #C8E6C9);
    color: var(--primary-dark);
}

/* CTA */
.cta-section {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.cta-content h2 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

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

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

.cta-buttons .btn-primary:hover {
    background: var(--bg-light);
}

.cta-buttons .btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
}

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

.footer-section li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-motto {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-light);
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .quick-cards,
    .category-grid,
    .basics-grid {
        grid-template-columns: 1fr;
    }
    
    .ranking-wrapper {
        grid-template-columns: 1fr;
    }
    
    .user-cards {
        grid-template-columns: 1fr;
    }
}

/* アニメーション */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
}

.animate-on-scroll.animate-in {
    animation: fadeIn 0.6s ease forwards;
}

/* スクロールバー */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-green);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ========================
   緊急時の対処法セクション
   ======================== */
.emergency-care {
    background: linear-gradient(135deg, #FFF9E6, #FFEBEE);
    padding: var(--spacing-xl) 0;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.emergency-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.emergency-card {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    border-left: 5px solid;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.emergency-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60px;
    height: 60px;
    border-radius: 0 16px 0 30px;
    opacity: 0.1;
}

.emergency-card.critical {
    border-left-color: var(--emergency-critical);
}

.emergency-card.critical::before {
    background: var(--emergency-critical);
}

.emergency-card.urgent {
    border-left-color: var(--emergency-urgent);
}

.emergency-card.urgent::before {
    background: var(--emergency-urgent);
}

.emergency-card.moderate {
    border-left-color: var(--emergency-moderate);
}

.emergency-card.moderate::before {
    background: var(--emergency-moderate);
}

.emergency-card.attention {
    border-left-color: var(--emergency-attention);
}

.emergency-card.attention::before {
    background: var(--emergency-attention);
}

.emergency-card.wilting {
    border-left-color: var(--emergency-wilting);
}

.emergency-card.wilting::before {
    background: var(--emergency-wilting);
}

.emergency-card.growth-stop {
    border-left-color: var(--emergency-low);
}

.emergency-card.growth-stop::before {
    background: var(--emergency-low);
}

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

.emergency-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.emergency-card h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.emergency-level {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    background: rgba(0,0,0,0.05);
    display: inline-block;
}

.emergency-actions {
    margin-bottom: 1rem;
}

.emergency-actions h4 {
    color: var(--primary-dark);
    font-size: 1rem;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 0.3rem;
}

.emergency-actions ol {
    margin: 0;
    padding-left: 1.2rem;
}

.emergency-actions li {
    margin-bottom: 0.3rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.emergency-prevention h4 {
    color: var(--text-primary);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
    font-weight: 600;
}

.emergency-prevention p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
    font-style: italic;
}

/* 緊急時コンタクトセクション */
.emergency-contact {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    border: 2px solid #E8F5E9;
}

.emergency-contact h3 {
    color: var(--primary-dark);
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.contact-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.contact-item {
    text-align: center;
    padding: 1rem;
    border-radius: 12px;
    background: #F8FFF8;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(76, 175, 80, 0.2);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

.contact-item h4 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.btn-emergency {
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    color: white;
    padding: 0.7rem 1.3rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-emergency:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-green));
    transform: scale(1.05);
    text-decoration: none;
    color: white;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .emergency-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .emergency-card {
        padding: 1rem;
    }
    
    .emergency-icon {
        font-size: 2rem;
    }
    
    .emergency-card h3 {
        font-size: 1.1rem;
    }
    
    .contact-options {
        grid-template-columns: 1fr;
    }
    
    .emergency-contact {
        padding: 1.5rem;
    }
}