/* ========================================
   IPPO Teachers Hub - Landing Page CSS
   デザインコンセプト：落ち着いた、信頼できる、前向き、和の雰囲気
   ======================================== */

/* ========================================
   1. カラーパレット & デザイントークン（和風ポップ）
   ======================================== */
:root {
    /* 和風カラーパレット（日本の伝統色ベース） */
    --color-base: #fff8f0;              /* 生成り色（きなり）- 温かみのある背景 */
    --color-white: #ffffff;             /* 純白 */
    --color-light-pink: #ffe4e1;        /* 桜色の淡い色 */
    --color-light-cream: #fff9e6;       /* クリーム色 */
    --color-gray: #6b7280;              /* グレー（テキスト） */
    --color-dark-gray: #374151;         /* 濃いグレー */
    
    /* メインカラー - 和風ポップ */
    --color-primary: #d64161;           /* 紅色（べにいろ）- ポップな赤 */
    --color-primary-dark: #b8344f;      /* 濃い紅色 */
    --color-primary-light: #ff6b8a;     /* 明るい紅色 */
    
    --color-secondary: #ff9a56;         /* 柿色（かきいろ）- 温かいオレンジ */
    --color-secondary-dark: #e88744;    /* 濃い柿色 */
    --color-secondary-light: #ffb380;   /* 明るい柿色 */
    
    --color-accent: #ffd166;            /* 山吹色（やまぶきいろ）- 明るい黄色 */
    --color-accent-dark: #f5c542;       /* 濃い山吹色 */
    --color-accent-light: #ffe194;      /* 明るい山吹色 */
    
    --color-sakura: #ffb7c5;            /* 桜色 - 優しいピンク */
    --color-matcha: #88c999;            /* 抹茶色 - 柔らかい緑 */
    --color-sora: #7cc5d9;              /* 空色 - 明るい青 */
    --color-fuji: #a39bc6;              /* 藤色 - 優しい紫 */
    
    --color-success: #88c999;           /* 抹茶色（成功） */
    --color-warning: #ff9a56;           /* 柿色（注意） */
    --color-info: #7cc5d9;              /* 空色（情報） */
    
    /* タイポグラフィ */
    --font-family: 'Noto Sans JP', 'M PLUS Rounded 1c', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.8;
    
    /* スペーシング */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 64px;
    --spacing-2xl: 96px;
    
    /* ボーダー・シャドウ（柔らかめ） */
    --border-radius-sm: 12px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --shadow-sm: 0 4px 12px rgba(214, 65, 97, 0.1);
    --shadow-md: 0 6px 20px rgba(214, 65, 97, 0.15);
    --shadow-lg: 0 10px 40px rgba(214, 65, 97, 0.2);
    --shadow-pop: 0 8px 24px rgba(255, 154, 86, 0.3);
    
    /* トランジション */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ========================================
   2. リセット & ベーススタイル
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--color-dark-gray);
    background-color: var(--color-base);
    background-image: 
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 10px,
            rgba(214, 65, 97, 0.02) 10px,
            rgba(214, 65, 97, 0.02) 20px
        );
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* ========================================
   3. コンテナ & レイアウト
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

/* ========================================
   4. タイポグラフィ
   ======================================== */
.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '✿';
    display: block;
    text-align: center;
    font-size: 1.5rem;
    color: var(--color-sakura);
    margin-top: var(--spacing-xs);
    animation: float 3s ease-in-out infinite;
}

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

.section-header {
    margin-bottom: var(--spacing-xl);
    position: relative;
    padding-top: var(--spacing-md);
}

/* ========================================
   5. ボタンスタイル
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--border-radius-md);
    transition: var(--transition-base);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-pop);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    transform: scale(0);
    transition: transform 0.5s;
}

.btn-primary:hover::before {
    transform: scale(1);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-secondary-dark) 100%);
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 3px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-md);
}

.btn-small {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.125rem;
}

.btn-xlarge {
    padding: 20px 48px;
    font-size: 1.25rem;
    flex-direction: column;
    gap: 4px;
}

.btn-xlarge small {
    font-size: 0.875rem;
    font-weight: 400;
    opacity: 0.9;
}

.btn-block {
    width: 100%;
}

/* ========================================
   6. ヘッダー
   ======================================== */
.header {
    position: sticky;
    top: 0;
    background: linear-gradient(to right, #fff8f0, #ffffff, #fff8f0);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    border-bottom: 3px solid var(--color-sakura);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo i {
    font-size: 1.5rem;
    color: var(--color-primary);
    animation: gentle-rotate 4s ease-in-out infinite;
}

@keyframes gentle-rotate {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(5deg); }
}

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

.nav-link {
    font-weight: 500;
    color: var(--color-dark-gray);
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
}

.nav-link:hover {
    color: var(--color-primary);
    background: var(--color-light-gray);
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--color-primary);
}

/* モバイルメニュー */
.mobile-menu {
    display: none;
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    z-index: 999;
    opacity: 0;
    transform: translateY(-20px);
    transition: var(--transition-base);
}

.mobile-menu.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-menu-link {
    padding: 12px;
    font-weight: 500;
    color: var(--color-dark-gray);
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.mobile-menu-link:hover {
    background: var(--color-light-gray);
}

/* ========================================
   7. ヒーローセクション
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '🌸';
    position: absolute;
    font-size: 8rem;
    opacity: 0.1;
    top: 20%;
    left: 10%;
    animation: float 6s ease-in-out infinite;
}

.hero::after {
    content: '🎌';
    position: absolute;
    font-size: 6rem;
    opacity: 0.1;
    bottom: 20%;
    right: 10%;
    animation: float 8s ease-in-out infinite reverse;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    border: 2px solid rgba(255, 255, 255, 0.4);
    animation: badge-float 3s ease-in-out infinite;
}

@keyframes badge-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.hero-badge i {
    font-size: 1.25rem;
}

.hero-title {
    font-size: 3.25rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero-title .highlight {
    color: var(--color-accent);
    position: relative;
    display: inline-block;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    padding: 0 8px;
    background: linear-gradient(transparent 60%, rgba(255, 209, 102, 0.4) 60%);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    font-weight: 500;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-stat {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition-bounce);
}

.hero-stat:hover {
    transform: translateY(-5px) scale(1.05);
    background: rgba(255, 255, 255, 0.3);
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 4px;
    color: var(--color-accent);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.hero-trust {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.05rem;
    font-weight: 700;
    color: #1f2937;
    background: #ffffff;
    padding: 14px 24px;
    border-radius: 30px;
    border: 3px solid var(--color-accent);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.hero-trust i {
    color: var(--color-success);
    font-size: 1.1rem;
}

.hero-trust a {
    color: #d64161;
    font-weight: 900;
    text-decoration: none;
    transition: var(--transition-base);
    border-bottom: 3px solid #d64161;
}

.hero-trust a:hover {
    color: #ff9a56;
    border-bottom-color: #ff9a56;
}

.hero-illustration {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.2);
    min-height: 450px;
    border: 5px solid rgba(255, 255, 255, 0.5);
}

/* 写真コンテナ */
.hero-photo-container {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 450px;
}

.hero-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* グラデーションオーバーレイ（写真の上に浮遊文字を見やすくする） */
.photo-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(214, 65, 97, 0.15) 0%,
        rgba(255, 154, 86, 0.1) 50%,
        rgba(255, 209, 102, 0.15) 100%
    );
    pointer-events: none;
    z-index: 1;
}

/* キーワードバッジ（写真の上に配置） */
.floating-words {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--spacing-lg);
}

.floating-word {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    font-size: 1.5rem;
    font-weight: 900;
    padding: 16px 32px;
    border-radius: 50px;
    box-shadow: 
        0 8px 24px rgba(0, 0, 0, 0.3),
        0 0 0 4px rgba(255, 255, 255, 0.3);
    letter-spacing: 0.1em;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    backdrop-filter: blur(8px);
    border: 3px solid var(--color-white);
    transition: var(--transition-bounce);
    position: relative;
}

.floating-word::before {
    content: '';
    width: 12px;
    height: 12px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--color-accent);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { 
        transform: scale(1);
        opacity: 1;
    }
    50% { 
        transform: scale(1.3);
        opacity: 0.7;
    }
}

.floating-word:hover {
    transform: scale(1.05);
    box-shadow: 
        0 12px 32px rgba(0, 0, 0, 0.4),
        0 0 0 5px rgba(255, 255, 255, 0.5);
}

.word-1 {
    align-self: flex-start;
    margin-top: var(--spacing-md);
}

.word-2 {
    align-self: flex-end;
    margin-top: auto;
    margin-bottom: auto;
}

.word-3 {
    align-self: center;
    margin-bottom: var(--spacing-md);
}



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

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
}

.hero-wave svg {
    width: 100%;
    height: auto;
}

/* ========================================
   8. 悩みセクション
   ======================================== */
.problems {
    background: var(--color-base);
}

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

.problem-card {
    background: linear-gradient(135deg, #ffffff, #fff9e6);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    text-align: center;
    border: 3px solid transparent;
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--color-sakura), var(--color-sora), var(--color-matcha));
    border-radius: var(--border-radius-md);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s;
}

.problem-card:hover {
    transform: translateY(-12px) rotate(1deg);
    box-shadow: var(--shadow-pop);
}

.problem-card:hover::before {
    opacity: 1;
}

.problem-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    box-shadow: 0 6px 20px rgba(214, 65, 97, 0.3);
    border: 4px solid var(--color-white);
    transition: var(--transition-bounce);
}

.problem-card:hover .problem-icon {
    transform: scale(1.1) rotate(360deg);
}

.problem-icon i {
    font-size: 2.25rem;
    color: var(--color-white);
}

.problem-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.problem-text {
    color: var(--color-gray);
    line-height: 1.7;
}

/* ========================================
   9. サービス紹介セクション
   ======================================== */
.about {
    background: var(--color-white);
}

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

.feature-card {
    background: linear-gradient(135deg, #ffffff, #fff9e6);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 3px solid var(--color-sakura);
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-pop);
    transform: translateY(-8px);
}

.feature-highlight {
    border: 4px solid var(--color-secondary);
    background: linear-gradient(135deg, #fff9e6, #ffe4e1);
    position: relative;
}

.feature-highlight::before {
    content: '⭐';
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 2rem;
    animation: twinkle 2s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50% 50% 0 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    border: 3px solid var(--color-white);
}

.feature-card:hover .feature-icon {
    transform: rotate(90deg) scale(1.1);
}

.feature-icon i {
    font-size: 1.875rem;
    color: var(--color-white);
}

.feature-highlight .feature-icon {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-text {
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.feature-list li {
    display: flex;
    align-items: start;
    gap: var(--spacing-xs);
    font-size: 0.95rem;
    color: var(--color-dark-gray);
}

.feature-list i {
    color: var(--color-success);
    margin-top: 4px;
}

/* ========================================
   10. ベネフィットセクション
   ======================================== */
.benefits {
    background: var(--color-base);
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.benefit-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-md);
    align-items: center;
    background: linear-gradient(135deg, #ffffff, #fff8f0);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 3px solid var(--color-light-pink);
    transition: var(--transition-base);
}

.benefit-item:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.02);
}

.benefit-label {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.benefit-label.before {
    background: linear-gradient(135deg, #e5e7eb, #d1d5db);
    color: var(--color-gray);
}

.benefit-label.after {
    background: linear-gradient(135deg, var(--color-matcha), var(--color-sora));
    color: var(--color-white);
    box-shadow: 0 2px 8px rgba(136, 201, 153, 0.4);
}

.benefit-before p,
.benefit-after p {
    color: var(--color-dark-gray);
    line-height: 1.7;
}

.benefit-after strong {
    color: var(--color-primary);
    font-size: 1.125rem;
}

.benefit-arrow {
    font-size: 2.5rem;
    color: var(--color-secondary);
    animation: arrow-move 1.5s ease-in-out infinite;
}

@keyframes arrow-move {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(8px); }
}

/* ========================================
   11. ステップセクション
   ======================================== */
.steps {
    background: var(--color-white);
}

.steps-flow {
    max-width: 800px;
    margin: 0 auto;
}

.step-item {
    background: linear-gradient(135deg, #ffffff, #ffe4e1);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-align: center;
    position: relative;
    border: 4px solid var(--color-sakura);
    transition: var(--transition-bounce);
}

.step-item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-pop);
}

.step-number {
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.5rem;
    box-shadow: 0 4px 16px rgba(255, 154, 86, 0.5);
    border: 4px solid var(--color-white);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-5px); }
}

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

.step-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.step-text {
    color: var(--color-gray);
    line-height: 1.8;
}

.step-arrow {
    text-align: center;
    font-size: 2.5rem;
    color: var(--color-secondary);
    padding: var(--spacing-md) 0;
    animation: arrow-bounce 1.5s ease-in-out infinite;
}

@keyframes arrow-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ========================================
   12. プラン比較セクション
   ======================================== */
.plans {
    background: var(--color-base);
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
}

.plan-card {
    background: linear-gradient(135deg, #ffffff, #fff8f0);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    transition: var(--transition-bounce);
    border: 3px solid var(--color-light-pink);
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
}

.plan-card:hover {
    transform: translateY(-12px) rotate(-1deg);
    box-shadow: var(--shadow-lg);
}

.plan-featured {
    border: 5px solid var(--color-secondary);
    background: linear-gradient(135deg, #ffe4e1, #fff9e6);
    transform: scale(1.08);
    box-shadow: 0 12px 48px rgba(255, 154, 86, 0.3);
}

.plan-featured::before {
    content: '';
    position: absolute;
    inset: -5px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    border-radius: var(--border-radius-lg);
    z-index: -1;
    opacity: 0.3;
    filter: blur(20px);
}

.plan-featured:hover {
    transform: scale(1.1) translateY(-12px) rotate(1deg);
}

.plan-badge {
    position: absolute;
    top: -18px;
    right: 20px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: var(--color-white);
    padding: 10px 24px;
    border-radius: 25px;
    font-weight: 900;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 6px 20px rgba(255, 154, 86, 0.5);
    border: 3px solid var(--color-white);
    animation: badge-wiggle 2s ease-in-out infinite;
}

@keyframes badge-wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-3deg); }
    75% { transform: rotate(3deg); }
}

.plan-header {
    text-align: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-light-gray);
    margin-bottom: var(--spacing-md);
}

.plan-name {
    font-size: 1.9rem;
    font-weight: 900;
    color: #1f2937;
    margin-bottom: var(--spacing-sm);
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.plan-currency {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.plan-amount {
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.plan-period {
    font-size: 1.125rem;
    color: var(--color-gray);
    margin-left: 4px;
}

.plan-description {
    color: #4b5563;
    font-size: 1.05rem;
    font-weight: 500;
}

.plan-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.plan-feature {
    display: flex;
    align-items: start;
    gap: var(--spacing-xs);
    font-size: 1rem;
    color: #1f2937;
    line-height: 1.6;
}

.plan-feature i {
    color: #10b981;
    margin-top: 4px;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.plan-feature.disabled {
    opacity: 0.4;
}

.plan-feature.disabled i {
    color: #9ca3af;
}

.plan-feature.highlight {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(214, 65, 97, 0.3);
    animation: highlight-pulse 2s ease-in-out infinite;
}

.plan-feature.highlight i {
    color: var(--color-white);
    font-size: 1.3rem;
    flex-shrink: 0;
}

@keyframes highlight-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.plan-recommend {
    background: #f3f4f6;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.plan-recommend p {
    color: #374151;
    line-height: 1.7;
}

.plan-recommend strong {
    color: #1f2937;
    font-weight: 700;
}

.plans-note {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--border-radius-md);
    border-left: 4px solid var(--color-info);
}

.plans-note p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-dark-gray);
    margin-bottom: var(--spacing-xs);
    line-height: 1.7;
}

.plans-note p:last-child {
    margin-bottom: 0;
}

.plans-note i {
    color: var(--color-info);
}

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

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

.testimonial-card {
    background: linear-gradient(135deg, #ffffff, #fff9e6);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    border: 3px solid var(--color-light-cream);
    position: relative;
}

.testimonial-card::before {
    content: '💬';
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 2rem;
    opacity: 0.2;
}

.testimonial-card:hover {
    box-shadow: var(--shadow-pop);
    transform: translateY(-8px) rotate(-1deg);
    border-color: var(--color-sakura);
}

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

.testimonial-avatar {
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--color-sakura), var(--color-fuji));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.testimonial-name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
}

.testimonial-role {
    font-size: 0.9rem;
    color: var(--color-gray);
}

.testimonial-rating {
    display: flex;
    gap: 4px;
    margin-bottom: var(--spacing-sm);
}

.testimonial-rating i {
    color: var(--color-accent);
    filter: drop-shadow(0 2px 4px rgba(255, 209, 102, 0.5));
    animation: star-twinkle 3s ease-in-out infinite;
}

.testimonial-rating i:nth-child(1) { animation-delay: 0s; }
.testimonial-rating i:nth-child(2) { animation-delay: 0.2s; }
.testimonial-rating i:nth-child(3) { animation-delay: 0.4s; }
.testimonial-rating i:nth-child(4) { animation-delay: 0.6s; }
.testimonial-rating i:nth-child(5) { animation-delay: 0.8s; }

@keyframes star-twinkle {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

.testimonial-text {
    color: var(--color-dark-gray);
    line-height: 1.8;
    font-style: italic;
}

/* ========================================
   14. FAQセクション
   ======================================== */
.faq {
    background: var(--color-base);
}

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

.faq-item {
    background: linear-gradient(135deg, #ffffff, #fff8f0);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--color-light-pink);
    transition: var(--transition-base);
}

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

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
    text-align: left;
    transition: var(--transition-base);
}

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

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--color-secondary);
    font-size: 1.25rem;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-answer p {
    color: var(--color-dark-gray);
    line-height: 1.8;
}

/* ========================================
   15. CTAセクション
   ======================================== */
.cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '✨';
    position: absolute;
    font-size: 6rem;
    opacity: 0.15;
    top: 10%;
    left: 5%;
    animation: float 5s ease-in-out infinite;
}

.cta::after {
    content: '🎉';
    position: absolute;
    font-size: 5rem;
    opacity: 0.15;
    bottom: 15%;
    right: 8%;
    animation: float 7s ease-in-out infinite reverse;
}

.cta-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

.cta-title .highlight {
    color: var(--color-accent);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    padding: 0 8px;
    background: linear-gradient(transparent 60%, rgba(255, 255, 255, 0.3) 60%);
}

.cta-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

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

.cta-note {
    font-size: 0.95rem;
    opacity: 0.9;
}

.cta-note i {
    color: var(--color-success);
}

/* ========================================
   16. フッター
   ======================================== */
.footer {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    border-top: 5px solid var(--color-secondary);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.footer-logo i {
    font-size: 1.75rem;
    color: var(--color-accent);
    animation: gentle-rotate 4s ease-in-out infinite;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    transition: var(--transition-base);
}

.footer-section a:hover {
    color: var(--color-white);
    padding-left: 4px;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* ========================================
   17. スクロールトップボタン
   ======================================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-pop);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-bounce);
    z-index: 1000;
    border: 3px solid var(--color-white);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.scroll-top:hover {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    transform: translateY(-6px) scale(1.1);
    box-shadow: 0 12px 32px rgba(255, 154, 86, 0.5);
}

/* ========================================
   18. レスポンシブデザイン
   ======================================== */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    /* ヘッダー */
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    /* ヒーロー */
    .hero {
        padding: var(--spacing-xl) 0 var(--spacing-lg);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-stat {
        flex: 1;
        min-width: 100px;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-illustration {
        min-height: 350px;
    }
    
    .hero-photo-container {
        min-height: 350px;
    }
    
    .floating-words {
        padding: var(--spacing-sm);
    }
    
    .floating-word {
        font-size: 1.125rem;
        padding: 12px 24px;
    }
    
    .floating-word::before {
        width: 8px;
        height: 8px;
    }
    
    /* セクション */
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* 悩みカード */
    .problems-grid {
        grid-template-columns: 1fr;
    }
    
    /* 特徴グリッド */
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    /* ベネフィット */
    .benefit-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .benefit-arrow {
        transform: rotate(90deg);
        font-size: 1.5rem;
    }
    
    /* プラン */
    .plans-grid {
        grid-template-columns: 1fr;
    }
    
    .plan-featured {
        transform: scale(1);
    }
    
    .plan-featured:hover {
        transform: scale(1.02) translateY(-4px);
    }
    
    /* お客様の声 */
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    /* CTA */
    .cta-title {
        font-size: 1.75rem;
    }
    
    .cta-subtitle {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    /* フッター */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-base: 15px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .hero-badge {
        font-size: 0.85rem;
        padding: 8px 16px;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .hero-stat {
        width: 100%;
    }
    
    .btn-xlarge {
        padding: 16px 32px;
        font-size: 1.125rem;
    }
    
    .plan-amount {
        font-size: 2.75rem;
    }
    
    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    .hero-illustration {
        min-height: 280px;
    }
    
    .hero-photo-container {
        min-height: 280px;
    }
    
    .floating-words {
        padding: var(--spacing-xs);
    }
    
    .floating-word {
        font-size: 0.95rem;
        padding: 10px 20px;
    }
    
    .floating-word::before {
        width: 6px;
        height: 6px;
    }
}

/* ========================================
   19. 和風装飾要素
   ======================================== */

/* 桜の花びら装飾（各セクション） */
.problems::before,
.benefits::before,
.testimonials::before {
    content: '🌸';
    position: absolute;
    left: 2%;
    top: 10%;
    font-size: 4rem;
    opacity: 0.15;
    animation: float 8s ease-in-out infinite;
}

.about::after,
.steps::after,
.plans::after {
    content: '🌸';
    position: absolute;
    right: 3%;
    bottom: 15%;
    font-size: 3.5rem;
    opacity: 0.15;
    animation: float 10s ease-in-out infinite reverse;
}

/* セクション区切り線（和風） */
section {
    position: relative;
}

.about::before,
.benefits::before,
.plans::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, transparent, var(--color-sakura), transparent);
    border-radius: 2px;
}

/* 波模様の背景（和風パターン） */
.about {
    background-image:
        radial-gradient(circle at 20% 80%, rgba(255, 183, 197, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(136, 201, 153, 0.1) 0%, transparent 50%);
}

.benefits {
    background-image:
        radial-gradient(circle at 30% 70%, rgba(163, 155, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(255, 209, 102, 0.1) 0%, transparent 50%);
}

.plans {
    background-image:
        radial-gradient(circle at 40% 60%, rgba(124, 197, 217, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 60% 40%, rgba(255, 154, 86, 0.1) 0%, transparent 50%);
}

/* きらきら効果 */
@keyframes sparkle {
    0%, 100% {
        opacity: 0;
        transform: scale(0);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
}

.hero-content::after,
.cta-content::after {
    content: '✨';
    position: absolute;
    font-size: 2rem;
    animation: sparkle 3s ease-in-out infinite;
}

/* 和風円形装飾 */
.section-header::before {
    content: '';
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, var(--color-sakura) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.3;
}

/* ========================================
   20. アクセシビリティ対応
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* フォーカス表示 */
button:focus,
a:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* ========================================
   21. プリントスタイル
   ======================================== */
@media print {
    .header,
    .mobile-menu,
    .scroll-top,
    .hero-cta,
    .cta {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}