/* ========================================
   IDENTITY BOOK - Premium Design System
   ======================================== */

/* CSS Variables */
:root {
    --primary: #0a0a1a;
    --secondary: #1a1a2e;
    --accent: #c9a961;
    --gold: #d4af37;
    --gold-light: #f4e4a6;
    --gold-dark: #b8962f;
    --light: #f8f9fa;
    --white: #ffffff;
    --text: #2c3e50;
    --text-light: #6c757d;
    --gradient-gold: linear-gradient(135deg, #d4af37 0%, #f4e4a6 50%, #d4af37 100%);
    --gradient-dark: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 100%);
    --gradient-radial: radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.15), transparent 60%);
    --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 40px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 25px 60px rgba(0, 0, 0, 0.2);
    --shadow-gold: 0 10px 40px rgba(212, 175, 55, 0.3);
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-accent: 'Cormorant Garamond', Georgia, serif;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

/* Particles Background */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--gold);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
        opacity: 0.3;
    }

    25% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0.6;
    }

    50% {
        transform: translateY(-200px) translateX(-30px);
        opacity: 0.3;
    }

    75% {
        transform: translateY(-100px) translateX(20px);
        opacity: 0.5;
    }
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 1rem 5%;
    z-index: 1000;
    transition: var(--transition-base);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.navbar.scrolled {
    background: rgba(10, 10, 26, 0.98);
    box-shadow: var(--shadow-md);
}

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

.logo {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 900;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
}

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

.nav-links a {
    color: var(--light);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-base);
    position: relative;
}

.nav-links a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: width var(--transition-base);
}

.nav-links a:not(.nav-cta):hover::after {
    width: 100%;
}

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

.nav-cta {
    background: var(--gradient-gold);
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    color: var(--primary) !important;
    font-weight: 700;
    box-shadow: var(--shadow-gold);
    transition: var(--transition-slow);
}

.nav-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.4);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--gold);
    transition: var(--transition-base);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-dark);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(212, 175, 55, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(212, 175, 55, 0.08) 0%, transparent 50%);
    animation: pulse 10s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 2rem;
    max-width: 900px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient-gold);
    color: var(--primary);
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-gold);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 12vw, 7rem);
    font-weight: 900;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: -2px;
    text-shadow: 0 0 60px rgba(212, 175, 55, 0.3);
}

.hero-tagline {
    font-family: var(--font-accent);
    font-size: clamp(1.25rem, 3vw, 2rem);
    color: var(--gold-light);
    font-style: italic;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(-100%);
    transition: transform 0.4s ease;
}

.btn:hover::before {
    transform: translateX(0);
}

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

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 50px rgba(212, 175, 55, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--light);
    border: 2px solid var(--gold);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--gold);
    color: var(--primary);
    transform: translateY(-4px);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.1);
    color: var(--light);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--gold);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.1rem;
}

/* Amazon Button - Brand Style */
.btn-amazon {
    background: #131921;
    color: #FFFFFF;
    border: 2px solid #FF9900;
    box-shadow: 0 8px 30px rgba(19, 25, 33, 0.4);
}

.btn-amazon:hover {
    background: #FF9900;
    color: #131921;
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 40px rgba(255, 153, 0, 0.5);
}

.btn-amazon .brand-icon {
    width: 22px;
    height: 22px;
    fill: #FF9900;
    transition: fill 0.3s ease;
}

.btn-amazon:hover .brand-icon {
    fill: #131921;
}

/* Flipkart Button - Brand Style */
.btn-flipkart {
    background: #2874F0;
    color: #FFFFFF;
    border: 2px solid #FFE500;
    box-shadow: 0 8px 30px rgba(40, 116, 240, 0.4);
}

.btn-flipkart:hover {
    background: #FFE500;
    color: #2874F0;
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 40px rgba(255, 229, 0, 0.5);
}

.btn-flipkart .brand-icon {
    width: 22px;
    height: 22px;
    fill: #FFE500;
    transition: fill 0.3s ease;
}

.btn-flipkart:hover .brand-icon {
    fill: #2874F0;
}

/* Hero Note */
.hero-note {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    color: var(--gold-light);
    font-weight: 500;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    z-index: 2;
}

.scroll-indicator svg {
    width: 30px;
    height: 30px;
    color: var(--gold);
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ========================================
   Section Styles
   ======================================== */
section {
    padding: 6rem 5%;
    position: relative;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    text-align: center;
    margin-bottom: 0.75rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary) 0%, var(--gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title.light {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto 3.5rem;
}

.section-subtitle.light {
    color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   About Section
   ======================================== */
.about {
    background: var(--light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1.25rem;
    font-weight: 700;
}

.about-text p {
    font-size: 1.05rem;
    color: var(--text);
    margin-bottom: 1.25rem;
    line-height: 1.9;
}

.features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--gold);
    transition: var(--transition-base);
}

.feature-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-gold);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--primary);
    stroke-width: 2.5;
}

.feature-item strong {
    display: block;
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 0.15rem;
}

.feature-item span {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Book Image */
.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-wrapper {
    position: relative;
}

.book-cover {
    max-width: 380px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg) rotateX(3deg);
    transition: var(--transition-slow);
}

.book-cover:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0) scale(1.03);
}

.book-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.3) 0%, transparent 70%);
    filter: blur(30px);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.book-wrapper:hover .book-glow {
    opacity: 1;
}

/* ========================================
   Audio Section
   ======================================== */
.listen {
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.listen::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 10% 20%, rgba(212, 175, 55, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 40%);
    pointer-events: none;
}

.audio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.audio-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 20px;
    padding: 2rem;
    transition: var(--transition-slow);
}

.audio-card:hover {
    transform: translateY(-8px);
    border-color: var(--gold);
    box-shadow: 0 25px 50px rgba(212, 175, 55, 0.15);
}

.audio-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.language-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-gold);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.language-icon svg {
    width: 26px;
    height: 26px;
    stroke: var(--primary);
    stroke-width: 2;
}

.language-info h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--gold);
    margin-bottom: 0.15rem;
}

.language-info span {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.audio-player {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.play-btn {
    width: 56px;
    height: 56px;
    background: var(--gradient-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-base);
    box-shadow: var(--shadow-gold);
}

.play-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.4);
}

.play-btn svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    margin-left: 2px;
}

.play-btn .pause-icon {
    margin-left: 0;
}

.audio-progress {
    flex: 1;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-gold);
    width: 0%;
    border-radius: 10px;
    transition: width 0.1s linear;
}

.time-display {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    font-variant-numeric: tabular-nums;
}

.audio-description {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

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

.author-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.author-photo {
    width: 280px;
    height: 340px;
    border-radius: 20px;
    object-fit: cover;
    border: 5px solid var(--gold);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
}

.author-photo:hover {
    transform: scale(1.03) rotate(1deg);
}

.author-bio h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.author-bio p {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.author-bio blockquote {
    font-family: var(--font-accent);
    font-style: italic;
    font-size: 1.2rem;
    color: var(--gold-dark);
    padding-left: 1.5rem;
    border-left: 3px solid var(--gold);
}

/* ========================================
   Preview Section
   ======================================== */
.preview {
    background: var(--gradient-dark);
}

.preview-card {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 24px;
    padding: 3rem;
    position: relative;
}

.quote-mark {
    position: absolute;
    top: 1rem;
    left: 2rem;
    font-size: 8rem;
    font-family: Georgia, serif;
    color: rgba(212, 175, 55, 0.1);
    line-height: 1;
    pointer-events: none;
}

.preview-content {
    font-family: var(--font-accent);
    font-size: 1.3rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.95);
    text-align: center;
    margin-bottom: 2rem;
    min-height: 180px;
    position: relative;
    z-index: 1;
}

.preview-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ========================================
   Buy Section
   ======================================== */
.buy {
    background: var(--light);
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.platform-card {
    background: var(--white);
    border-radius: 24px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 2px solid transparent;
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.platform-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

/* Amazon Card */
.platform-card.amazon-card {
    border-color: rgba(255, 153, 0, 0.2);
}

.platform-card.amazon-card:hover {
    border-color: #FF9900;
    box-shadow: 0 25px 60px rgba(255, 153, 0, 0.2);
}

/* Flipkart Card */
.platform-card.flipkart-card {
    border-color: rgba(40, 116, 240, 0.2);
}

.platform-card.flipkart-card:hover {
    border-color: #2874F0;
    box-shadow: 0 25px 60px rgba(40, 116, 240, 0.2);
}

/* Platform Badge */
.platform-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(135deg, #FF9900, #FF6600);
    color: #000;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.platform-badge.india {
    background: linear-gradient(135deg, #2874F0, #1A5FD4);
    color: #fff;
}

.platform-icon {
    width: 80px;
    height: 80px;
    margin: 0.5rem auto 1.5rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Amazon Icon - Orange */
.platform-icon.amazon {
    background: linear-gradient(135deg, #FF9900 0%, #FFAD33 100%);
    box-shadow: 0 10px 30px rgba(255, 153, 0, 0.3);
}

.platform-icon.amazon .icon-letter {
    font-size: 2.5rem;
    font-weight: 800;
    color: #232F3E;
    font-family: var(--font-display);
}

/* Flipkart Icon - Blue */
.platform-icon.flipkart {
    background: linear-gradient(135deg, #2874F0 0%, #5A9CF0 100%);
    box-shadow: 0 10px 30px rgba(40, 116, 240, 0.3);
}

.platform-icon.flipkart .icon-letter {
    font-size: 2.5rem;
    font-weight: 800;
    color: #FFFFFF;
    font-family: var(--font-display);
}

.platform-card h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.platform-tagline {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.platform-features {
    list-style: none;
    text-align: left;
    margin-bottom: 1.5rem;
    padding: 0;
}

.platform-features li {
    padding: 0.5rem 0;
    color: var(--text);
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.platform-features li:last-child {
    border-bottom: none;
}

.platform-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.platform-btn {
    display: block;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-base);
    text-align: center;
}

/* Amazon Platform Buttons */
.amazon-card .platform-btn {
    background: #FFFFFF;
    color: #131921;
    border: 2px solid #131921;
}

.amazon-card .platform-btn:hover {
    background: #131921;
    color: #FFFFFF;
    transform: translateY(-2px);
}

.amazon-card .platform-btn.primary {
    background: #131921;
    color: #FF9900;
    border: 2px solid #FF9900;
    box-shadow: 0 8px 25px rgba(19, 25, 33, 0.3);
    font-weight: 700;
}

.amazon-card .platform-btn.primary:hover {
    background: #FF9900;
    color: #131921;
    box-shadow: 0 12px 35px rgba(255, 153, 0, 0.4);
}

/* Flipkart Platform Buttons */
.flipkart-card .platform-btn {
    background: #FFFFFF;
    color: #2874F0;
    border: 2px solid #2874F0;
}

.flipkart-card .platform-btn:hover {
    background: #2874F0;
    color: #FFFFFF;
    transform: translateY(-2px);
}

.flipkart-card .platform-btn.primary {
    background: #2874F0;
    color: #FFE500;
    border: 2px solid #FFE500;
    box-shadow: 0 8px 25px rgba(40, 116, 240, 0.3);
    font-weight: 700;
}

.flipkart-card .platform-btn.primary:hover {
    background: #FFE500;
    color: #2874F0;
    box-shadow: 0 12px 35px rgba(255, 229, 0, 0.4);
}

/* Guarantee Banner */
.guarantee {
    text-align: center;
    margin-top: 3rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(212, 175, 55, 0.05));
    border-radius: 16px;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.guarantee p {
    color: var(--text);
    font-size: 1rem;
}

/* Audio CTA */
.audio-cta {
    text-align: center;
    margin-top: 2.5rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.audio-cta p {
    color: var(--gold-light);
    font-size: 1.1rem;
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    background: var(--gradient-dark);
    text-align: center;
    padding: 8rem 5%;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(212, 175, 55, 0.1) 0%, transparent 60%);
    animation: pulse 8s ease-in-out infinite;
}

.cta h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--gold);
    margin-bottom: 1rem;
    position: relative;
}

.cta p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    position: relative;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-share {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    position: relative;
}

.social-share span {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.social-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.social-btn:hover {
    background: var(--gold);
    transform: translateY(-4px) scale(1.1);
}

.social-btn svg {
    width: 20px;
    height: 20px;
    fill: var(--white);
}

.social-btn:hover svg {
    fill: var(--primary);
}

/* ========================================
   Footer
   ======================================== */
footer {
    background: var(--primary);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 5% 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 3rem;
    align-items: start;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    display: block;
}

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

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    transition: var(--transition-base);
    position: relative;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: width var(--transition-base);
}

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

.footer-links a:hover::after {
    width: 100%;
}

.footer-contact {
    text-align: right;
}

.footer-contact p {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-contact a {
    color: var(--gold);
    font-weight: 500;
    transition: var(--transition-base);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Animations
   ======================================== */
.animate-fade-in {
    animation: fadeIn 1s ease both;
}

.animate-fade-in-up {
    animation: fadeInUp 1s ease both;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Reveal on scroll */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 968px) {

    .about-grid,
    .author-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-image {
        order: -1;
    }

    .author-grid {
        gap: 2rem;
    }

    .author-photo {
        margin: 0 auto;
    }

    .author-bio blockquote {
        border-left: none;
        border-top: 3px solid var(--gold);
        padding: 1rem 0 0;
        text-align: center;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }

    .footer-contact {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 26, 0.98);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-top: 1px solid rgba(212, 175, 55, 0.2);
    }

    .nav-links.active {
        display: flex;
    }

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

    section {
        padding: 4rem 5%;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .preview-card {
        padding: 2rem 1.5rem;
    }

    .preview-content {
        font-size: 1.1rem;
    }

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

@media (max-width: 480px) {
    .hero-title {
        letter-spacing: 0;
    }

    .book-cover {
        max-width: 280px;
    }

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

    .preview-actions {
        flex-direction: column;
    }

    .preview-actions .btn {
        width: 100%;
    }
}