/* ===================================
   霧島安楽温泉【公式】公式LP スタイルシート
   カラーテーマ: 深緑・乳白色・琥珀色
   =================================== */

/* 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 */
    --color-primary: #2D5016;        /* 深緑 */
    --color-primary-light: #4A7C2A;  /* 深緑ライト */
    --color-primary-dark: #1B3A1F;   /* 深緑ダーク */
    --color-secondary: #F5F5F0;      /* 乳白色 */
    --color-accent: #D4A574;         /* 琥珀色 */
    --color-accent-light: #E8C9A0;   /* 琥珀色ライト */
    --color-text: #2C2C2C;           /* テキスト */
    --color-text-light: #666666;     /* テキストライト */
    --color-white: #FFFFFF;
    --color-overlay: rgba(27, 58, 31, 0.7);
    
    /* フォント */
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Zen Kaku Gothic New', sans-serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* トランジション */
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    line-height: 1.8;
    background-color: var(--color-secondary);
    overflow-x: hidden;
}

/* タイポグラフィ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.4;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

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

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

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--color-primary);
    border-radius: 50px;
}

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

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
    line-height: 2;
}

/* ボタン */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(45, 80, 22, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(45, 80, 22, 0.4);
}

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

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

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

.btn-map {
    margin-top: var(--spacing-sm);
    background: var(--color-accent);
    color: var(--color-white);
}

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

/* ===================================
   ヘッダー
   =================================== */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    color: var(--color-accent);
}

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

.nav-menu a {
    font-weight: 500;
    color: var(--color-text);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--color-accent);
    color: var(--color-white) !important;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
}

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

.nav-cta::after {
    display: none;
}

/* ハンバーガーメニュー */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--color-primary);
    transition: var(--transition);
    border-radius: 3px;
}

/* ===================================
   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-image: url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-overlay);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    max-width: 900px;
    padding: 0 var(--spacing-md);
}

.hero-title {
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    display: block;
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.hero-main {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.3;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.hero-description {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    font-weight: 300;
}

.hero-cta {
    margin-top: var(--spacing-md);
}

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

.fade-in-delay {
    animation: fadeInUp 1s ease-out 0.3s both;
}

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

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

/* スクロールインジケーター */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--color-white);
    font-size: 0.875rem;
    letter-spacing: 0.2em;
    z-index: 3;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: var(--color-white);
    margin-top: 10px;
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% {
        opacity: 0;
        transform: translateY(-20px);
    }
    50% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   コンセプトセクション
   =================================== */
.concept-section {
    background: var(--color-white);
}

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

.concept-card {
    background: var(--color-secondary);
    padding: var(--spacing-lg);
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.concept-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(45, 80, 22, 0.15);
}

.concept-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-white);
}

.concept-card-title {
    font-size: 1.75rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.concept-card-text {
    color: var(--color-text-light);
    line-height: 1.9;
}

/* ===================================
   温泉の魅力セクション
   =================================== */
.springs-section {
    background: linear-gradient(180deg, var(--color-secondary) 0%, var(--color-white) 100%);
}

.springs-feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.springs-main-card {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 30px;
    position: relative;
    overflow: hidden;
}

.springs-main-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: shimmer 8s linear infinite;
}

@keyframes shimmer {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.springs-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-accent);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.springs-main-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.springs-main-desc {
    font-size: 1.125rem;
    line-height: 1.8;
    opacity: 0.95;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.springs-comparison {
    position: relative;
}

.comparison-bar {
    margin-bottom: var(--spacing-sm);
}

.bar-label {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.bar-graph {
    height: 8px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}

.bar-graph::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: inherit;
    background: var(--color-accent);
    border-radius: 10px;
}

.comparison-bar.highlight .bar-graph::after {
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    animation: barFill 2s ease-out;
}

@keyframes barFill {
    from {
        width: 0;
    }
}

/* 温泉詳細カード */
.springs-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.springs-detail-card {
    display: flex;
    gap: var(--spacing-md);
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 20px;
    border: 2px solid var(--color-secondary);
    transition: var(--transition);
}

.springs-detail-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 5px 20px rgba(45, 80, 22, 0.1);
}

.detail-icon {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-white);
}

.detail-content h4 {
    font-size: 1.25rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

.detail-content p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* 温泉効果 */
.springs-effects {
    margin-top: var(--spacing-xl);
}

.effects-title {
    text-align: center;
    font-size: 2rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-lg);
}

.effects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.effect-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 20px;
    text-align: center;
    border: 3px solid var(--color-secondary);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.effect-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 165, 116, 0.1), transparent);
    transition: var(--transition);
}

.effect-card:hover::before {
    left: 100%;
}

.effect-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.effect-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.3;
    margin-bottom: var(--spacing-sm);
}

.effect-card h4 {
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.effect-card p {
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ===================================
   ３つの価値セクション
   =================================== */
.benefits-section {
    background: var(--color-white);
}

.benefits-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.benefit-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.benefit-item.reverse {
    direction: rtl;
}

.benefit-item.reverse > * {
    direction: ltr;
}

.benefit-image {
    border-radius: 30px;
    overflow: hidden;
}

.benefit-image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.5);
}

.benefit-content {
    padding: var(--spacing-md);
}

.benefit-title {
    font-size: 2rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: 1.5rem;
}

.benefit-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 80%;
    background: var(--color-accent);
    border-radius: 5px;
}

.benefit-text {
    font-size: 1.125rem;
    line-height: 2;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.benefit-text strong {
    color: var(--color-primary);
    font-weight: 600;
}

.benefit-points {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.benefit-points li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    color: var(--color-text-light);
}

.benefit-points i {
    color: var(--color-accent);
    font-size: 1.25rem;
}

/* ===================================
   過ごし方セクション
   =================================== */
.retreat-section {
    background: linear-gradient(180deg, var(--color-secondary) 0%, var(--color-white) 100%);
}

.retreat-timeline {
    position: relative;
    max-width: 900px;
    margin: var(--spacing-lg) auto;
}

.retreat-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--spacing-lg);
}

.timeline-time {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: 0 4px 15px rgba(45, 80, 22, 0.3);
    z-index: 2;
}

.timeline-content {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 20px;
    border: 2px solid var(--color-secondary);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.timeline-content h4 {
    font-size: 1.5rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--color-text-light);
    line-height: 1.9;
    margin-bottom: var(--spacing-sm);
}

.retreat-activities {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.retreat-activities li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text);
    line-height: 1.8;
}

.retreat-activities li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.retreat-activities strong {
    color: var(--color-primary);
    font-weight: 600;
}

.retreat-note {
    background: var(--color-secondary);
    padding: var(--spacing-sm);
    border-radius: 10px;
    font-size: 0.95rem;
    margin-top: var(--spacing-sm);
}

/* 滞在のコツ */
.retreat-tips {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 30px;
    margin-top: var(--spacing-xl);
}

.tips-title {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.tip-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.tip-item i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.tip-item p {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* CTA */
.retreat-cta {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.retreat-cta-text {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

/* ===================================
   お客様の声セクション
   =================================== */
.voice-section {
    background: var(--color-white);
}

.voice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.voice-card {
    background: var(--color-secondary);
    padding: var(--spacing-md);
    border-radius: 20px;
    border: 2px solid transparent;
    transition: var(--transition);
}

.voice-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(212, 165, 116, 0.2);
    transform: translateY(-5px);
}

.voice-header {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    align-items: center;
}

.voice-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.5rem;
}

.voice-name {
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 0.25rem;
}

.voice-rating {
    color: var(--color-accent);
    font-size: 0.875rem;
}

.voice-text {
    color: var(--color-text-light);
    line-height: 1.9;
    font-size: 0.95rem;
}

/* ===================================
   アクセスセクション
   =================================== */
.access-section {
    background: linear-gradient(180deg, var(--color-secondary) 0%, var(--color-white) 100%);
}

.access-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.access-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.access-info-card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 20px;
    border: 2px solid var(--color-secondary);
}

.access-info-card h3 {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.access-info-card p,
.access-info-card ul {
    color: var(--color-text-light);
    line-height: 1.9;
}

.access-info-card ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.access-info-card li::before {
    content: '・';
    color: var(--color-accent);
}

.access-map {
    display: flex;
    flex-direction: column;
}

.map-container {
    width: 100%;
    height: 500px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* ===================================
   CTAセクション
   =================================== */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.cta-description {
    font-size: 1.25rem;
    line-height: 2;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.btn-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 20px;
    font-size: 1rem;
    text-align: left;
    transition: var(--transition);
}

.btn-cta i {
    font-size: 2rem;
    flex-shrink: 0;
}

.btn-cta-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.btn-cta-text strong {
    font-size: 1.25rem;
    font-weight: 600;
}

.btn-cta-text small {
    font-size: 0.875rem;
    opacity: 0.85;
}

.btn-cta-primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 6px 20px rgba(212, 165, 116, 0.4);
}

.btn-cta-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(212, 165, 116, 0.5);
}

.btn-cta-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-cta-secondary:hover {
    background: var(--color-secondary);
    transform: translateY(-3px);
}

.btn-cta-tertiary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-cta-tertiary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

.cta-note {
    font-size: 0.95rem;
    opacity: 0.85;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-brand h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-tagline {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.footer-address {
    font-size: 0.95rem;
    line-height: 1.8;
    opacity: 0.8;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.footer-link-group h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.footer-link-group ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-link-group a {
    font-size: 0.95rem;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-link-group a:hover {
    opacity: 1;
    color: var(--color-accent);
    padding-left: 5px;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
}

.footer-bottom a {
    color: var(--color-accent);
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* ===================================
   ページトップボタン
   =================================== */
.page-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 15px rgba(212, 165, 116, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.page-top.show {
    opacity: 1;
    visibility: visible;
}

.page-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(212, 165, 116, 0.5);
}

/* ===================================
   レスポンシブデザイン
   =================================== */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }
    
    .springs-feature,
    .benefit-item,
    .access-content {
        grid-template-columns: 1fr;
    }
    
    .benefit-item.reverse {
        direction: ltr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    /* ナビゲーション */
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-120%);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* ヒーロー */
    .hero {
        background-attachment: scroll;
    }
    
    .hero-main {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    /* セクション */
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-description {
        font-size: 1rem;
    }
    
    /* タイムライン */
    .retreat-timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-time {
        width: 45px;
        height: 45px;
        font-size: 0.75rem;
    }
    
    /* CTA */
    .cta-title {
        font-size: 1.75rem;
    }
    
    .cta-description {
        font-size: 1rem;
    }
    
    /* フッター */
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .concept-grid,
    .effects-grid,
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .btn-cta {
        flex-direction: column;
        text-align: center;
    }
    
    .btn-cta i {
        font-size: 2.5rem;
    }
}

/* ユーティリティ */
.sp-only {
    display: none;
}

@media (max-width: 768px) {
    .sp-only {
        display: inline;
    }
}

/* AOSアニメーション用 */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
}

[data-aos].aos-animate {
    opacity: 1;
}

/* アクセシビリティ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}