/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    /* Colors - 真言密教をイメージした和のカラーパレット */
    --primary-color: #D4202A; /* 朱色 - アクセントカラー */
    --primary-dark: #A01820;
    --secondary-color: #2C3E50; /* 深い藍色 */
    --accent-gold: #DAA520; /* 金色 */
    --text-primary: #2C3E50;
    --text-secondary: #5A6C7D;
    --text-light: #8492A6;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-dark: #1A2332;
    --border-color: #E4E7EB;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #D4202A 0%, #A01820 100%);
    --gradient-gold: linear-gradient(135deg, #DAA520 0%, #B8860B 100%);
    --gradient-dark: linear-gradient(135deg, #2C3E50 0%, #1A2332 100%);
    
    /* Typography */
    --font-primary: 'Noto Serif JP', 'Yu Mincho', 'YuMincho', 'Hiragino Mincho ProN', serif;
    --font-display: 'Shippori Mincho', 'Yu Mincho', 'YuMincho', 'Hiragino Mincho ProN', serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-max-width: 1200px;
    
    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: 1.9;
    background-color: var(--bg-primary);
    overflow-x: hidden;
    font-feature-settings: "palt";
    letter-spacing: 0.05em;
}

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

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

ul {
    list-style: none;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gradient-gold);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 20px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.4;
    letter-spacing: 0.08em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    letter-spacing: 0.05em;
    line-height: 2;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-large {
    padding: 18px 40px;
    font-size: 1.125rem;
}

.btn-xl {
    padding: 22px 50px;
    font-size: 1.25rem;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 0.08em;
}

.logo i {
    font-size: 1.5rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition);
}

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

.nav-link.cta-btn {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 30px;
}

.nav-link.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: white;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    padding: 80px 30px 30px;
    gap: 20px;
}

.mobile-nav-link {
    padding: 15px 0;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link.mobile-cta {
    padding: 15px 30px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 30px;
    text-align: center;
    border: none;
    margin-top: 20px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-dark);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(212, 32, 42, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(218, 165, 32, 0.15) 0%, transparent 50%);
    z-index: -1;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 30px;
    animation: fadeInDown 0.8s ease-out;
}

.hero-badge i {
    color: var(--accent-gold);
}

.hero-title {
    font-family: var(--font-display);
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-title-main {
    display: block;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #FFFFFF 0%, #DAA520 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.1em;
}

.hero-title-sub {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
    letter-spacing: 0.05em;
}

.hero-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 50px;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 500;
}

.hero-feature i {
    color: var(--accent-gold);
    font-size: 1.25rem;
}

.hero-cta {
    animation: fadeInUp 0.8s ease-out 0.8s both;
    margin-bottom: 50px;
}

.hero-price {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    flex-wrap: wrap;
}

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

.price-amount {
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent-gold);
}

.price-tax {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.hero-recommendation {
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    text-align: left;
    animation: fadeInUp 0.8s ease-out 1s both;
}

.recommendation-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--gradient-gold);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.recommendation-text {
    font-size: 1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 15px;
}

.recommendation-author {
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 15px;
}

.recommendation-author-avatar {
    width: 70px;
    height: auto;
    border-radius: 6px;
    object-fit: contain;
    border: 2px solid rgba(255, 255, 255, 0.3);
    flex-shrink: 0;
}

.recommendation-author-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.recommendation-author strong {
    color: var(--accent-gold);
    display: block;
    margin-bottom: 5px;
    font-size: 1.125rem;
}

.recommendation-author span {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.6);
}

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

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

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

/* ============================================
   Book Overview Section
   ============================================ */
.book-overview {
    background: var(--bg-secondary);
}

.book-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: start;
}

.book-cover-container {
    position: sticky;
    top: 100px;
}

.book-cover-wrapper {
    margin-bottom: 30px;
}

.book-cover-image {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.book-cover-image:hover {
    transform: scale(1.05) translateY(-5px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
}

/* 以前のプレースホルダースタイルは削除 */

.book-info {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
}

.book-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.book-details li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.book-details i {
    color: var(--primary-color);
    width: 20px;
}

.book-description {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
}

.description-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 25px;
}

.description-title i {
    color: var(--accent-gold);
}

.description-content {
    margin-bottom: 40px;
}

.lead-text {
    font-size: 1.125rem;
    line-height: 2;
    color: var(--text-secondary);
    margin-bottom: 25px;
    padding-left: 20px;
    border-left: 4px solid var(--primary-color);
}

.description-content p {
    margin-bottom: 20px;
    line-height: 2;
    letter-spacing: 0.04em;
}

.description-content strong {
    color: var(--primary-color);
    font-weight: 700;
}

.key-points h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: 25px;
}

.key-points h4 i {
    color: var(--accent-gold);
}

.points-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.point-card {
    padding: 25px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 2px solid transparent;
    transition: var(--transition);
}

.point-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.point-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 12px;
    color: white;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.point-card h5 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 0.05em;
}

.point-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   10-Day Program Section
   ============================================ */
.program-section {
    background: white;
}

.program-intro {
    text-align: center;
    margin-bottom: 60px;
}

.program-lead {
    font-size: 1.125rem;
    line-height: 2;
    color: var(--text-secondary);
}

.program-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.program-timeline::before {
    content: '';
    position: absolute;
    left: 50px;
    top: 0;
    bottom: 100px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-gold));
}

.program-day {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.program-day.visible {
    opacity: 1;
    transform: translateY(0);
}

.day-number {
    flex-shrink: 0;
    width: 100px;
    height: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: white;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-md);
}

.day-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 1px;
}

.day-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1;
}

.day-content {
    flex: 1;
    padding: 20px 30px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 15px;
    transition: var(--transition);
    position: relative;
}

.day-content:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.day-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.6;
    letter-spacing: 0.04em;
}

.day-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Author Section
   ============================================ */
.author-section {
    background: var(--bg-secondary);
}

.author-content {
    max-width: 900px;
    margin: 0 auto;
}

.author-profile {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 40px;
    padding: 40px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
}

.author-image {
    flex-shrink: 0;
}

.author-photo {
    width: 180px;
    height: auto;
    border-radius: 10px;
    object-fit: contain;
    box-shadow: var(--shadow-md);
    border: 3px solid var(--border-color);
}

.author-name h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: 0.1em;
}

.author-title {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.author-role {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.author-bio {
    padding: 40px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
}

.author-bio h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 25px;
}

.author-bio h4 i {
    color: var(--accent-gold);
}

.author-bio p {
    margin-bottom: 20px;
    line-height: 2;
}

.author-links {
    display: flex;
    gap: 20px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid var(--border-color);
}

.author-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 30px;
    font-weight: 500;
    transition: var(--transition);
}

.author-link:hover {
    border-color: var(--primary-color);
    background: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.author-link i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

/* ============================================
   Testimonial Section
   ============================================ */
.testimonial-section {
    background: var(--gradient-dark);
    color: white;
}

.testimonial-section .section-badge {
    background: var(--gradient-gold);
}

.testimonial-section .section-title {
    color: white;
}

.testimonial-card {
    max-width: 800px;
    margin: 0 auto;
    padding: 50px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
}

.testimonial-text {
    font-size: 1.25rem;
    line-height: 2;
    text-align: center;
    margin-bottom: 40px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 20px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.testimonial-author-image {
    width: 120px;
    height: auto;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
    border: 3px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-md);
}

.testimonial-author-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
}

.testimonial-author-info h4 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-gold);
    margin-bottom: 8px;
    letter-spacing: 0.08em;
}

.testimonial-author-info p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

/* ============================================
   Target Readers Section
   ============================================ */
.readers-section {
    background: white;
}

.readers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.reader-card {
    padding: 35px 30px;
    background: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
}

.reader-card:hover {
    border-color: var(--primary-color);
    background: white;
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.reader-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 20px;
    color: white;
    font-size: 2.5rem;
    margin: 0 auto 20px;
}

.reader-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    letter-spacing: 0.05em;
}

.reader-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.5;
    margin-bottom: 20px;
    letter-spacing: 0.08em;
}

.cta-subtitle {
    font-size: 1.125rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.cta-benefits {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 40px;
}

.cta-benefit {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

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

.cta-price-box {
    padding: 30px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    margin-bottom: 40px;
}

.cta-price {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.cta-price-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
}

.cta-price-amount {
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent-gold);
}

.cta-price-tax {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
}

.cta-button {
    background: white;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.cta-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.cta-note i {
    font-size: 1rem;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.footer-section p {
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 15px;
}

.footer-book-info {
    margin-top: 20px;
}

.footer-book-info p {
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-gold);
}

.footer-links i {
    font-size: 1.125rem;
}

.footer-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 30px;
    font-weight: 700;
    transition: var(--transition);
}

.footer-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Scroll to Top Button
   ============================================ */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 992px) {
    .section-title {
        font-size: 2rem;
    }

    .hero-title-main {
        font-size: 2.5rem;
    }

    .hero-title-sub {
        font-size: 1.5rem;
    }

    .book-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .book-cover-container {
        max-width: 400px;
        margin: 0 auto;
        position: static;
    }

    .program-timeline::before {
        left: 40px;
    }

    .day-number {
        width: 80px;
        height: 80px;
    }

    .day-num {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }

    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .hero {
        padding: 100px 20px 60px;
        min-height: auto;
    }

    .hero-title-main {
        font-size: 2rem;
    }

    .hero-title-sub {
        font-size: 1.25rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-features {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-feature {
        justify-content: center;
    }

    .btn-large {
        padding: 16px 32px;
        font-size: 1rem;
    }

    .btn-xl {
        padding: 18px 40px;
        font-size: 1.125rem;
    }

    .points-grid {
        grid-template-columns: 1fr;
    }

    .program-timeline::before {
        display: none;
    }

    .program-day {
        flex-direction: column;
        gap: 20px;
    }

    .day-number {
        width: 80px;
        height: 80px;
        margin: 0 auto;
    }

    .author-profile {
        flex-direction: column;
        text-align: center;
    }

    .testimonial-card {
        padding: 30px 25px;
    }

    .testimonial-text {
        font-size: 1.125rem;
    }

    .testimonial-author {
        flex-direction: column;
        text-align: center;
    }

    .recommendation-author {
        flex-direction: column;
        text-align: center;
    }

    .recommendation-author-text {
        align-items: center;
    }

    .readers-grid {
        grid-template-columns: 1fr;
    }

    .cta-title {
        font-size: 2rem;
    }

    .cta-price-amount {
        font-size: 2.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .author-links {
        flex-direction: column;
    }

    .author-link {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title-main {
        font-size: 1.75rem;
    }

    .hero-title-sub {
        font-size: 1.125rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .book-description,
    .author-bio,
    .testimonial-card {
        padding: 25px 20px;
    }

    .day-content {
        padding: 20px;
    }

    .price-amount,
    .cta-price-amount {
        font-size: 2rem;
    }

    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}