/* ================================
   CSS Variables & Reset
   ================================ */
:root {
    /* Colors inspired by the book cover */
    --color-bg-dark: #0a0a0a;
    --color-bg: #111111;
    --color-bg-light: #1a1a1a;
    --color-surface: #222222;

    --color-primary: #c9a962;
    --color-primary-dark: #a68b4b;
    --color-primary-light: #e0c580;

    --color-text: #e8e8e8;
    --color-text-muted: #888888;
    --color-text-dim: #555555;

    --color-accent: #8b7355;
    --color-danger: #ff4444;

    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Borders */
    --border-radius: 4px;
}

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

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

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

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

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

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.section-title span {
    color: var(--color-primary);
}

/* ================================
   Navigation
   ================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: background-color var(--transition-normal),
                padding var(--transition-normal),
                backdrop-filter var(--transition-normal);
}

.nav.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: 0.2em;
}

.nav-logo span {
    color: var(--color-primary);
}

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

.nav-menu a {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-primary);
    transition: width var(--transition-normal);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition-fast);
}

/* ================================
   Hero Section
   ================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl) 0;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(201, 169, 98, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 115, 85, 0.05) 0%, transparent 40%),
        linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg) 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-text {
    z-index: 1;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.hero-title span {
    display: block;
    color: var(--color-primary);
    text-shadow: 0 0 40px rgba(201, 169, 98, 0.3);
}

.hero-tagline {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.4em;
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 500px;
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1s;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeIn 1.2s ease forwards;
    animation-delay: 0.5s;
}

.book-container {
    position: relative;
    max-width: 400px;
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform var(--transition-slow);
}

.book-container:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.02);
}

.book-cover {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.8),
        0 0 0 1px rgba(201, 169, 98, 0.1),
        -20px 20px 60px -20px rgba(0, 0, 0, 0.5);
}

.book-glow {
    position: absolute;
    inset: -20%;
    background: radial-gradient(ellipse at center, rgba(201, 169, 98, 0.15) 0%, transparent 70%);
    z-index: -1;
    filter: blur(40px);
    animation: pulse 4s ease-in-out infinite;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-dim);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 1.5s;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-text-dim);
    border-bottom: 2px solid var(--color-text-dim);
    transform: rotate(45deg);
    animation: scrollBounce 2s ease-in-out infinite;
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-bg-dark);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px -10px rgba(201, 169, 98, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-text-dim);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-amazon {
    background: linear-gradient(135deg, #ff9900 0%, #e68a00 100%);
}

.btn-amazon:hover {
    background: linear-gradient(135deg, #ffad33 0%, #ff9900 100%);
    box-shadow: 0 10px 30px -10px rgba(255, 153, 0, 0.5);
}

.btn-paperback {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.btn-paperback:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    box-shadow: 0 10px 30px -10px rgba(201, 169, 98, 0.5);
}

/* ================================
   Book Section
   ================================ */
.book-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-light) 50%, var(--color-bg) 100%);
}

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

.book-info {
    text-align: center;
}

.genre-tags {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.tag {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: 2px;
    background: rgba(201, 169, 98, 0.05);
}

.book-pitch {
    font-size: 1.25rem;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-md);
}

.book-info p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.book-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
}

.feature:hover {
    background: rgba(201, 169, 98, 0.05);
    border-color: rgba(201, 169, 98, 0.2);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    filter: grayscale(100%);
}

.feature h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.feature p {
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

/* ================================
   Excerpt Section
   ================================ */
.excerpt-section {
    background: var(--color-bg-dark);
    position: relative;
    overflow: hidden;
}

.excerpt-section::before {
    content: '"';
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    font-family: Georgia, serif;
    font-size: 400px;
    color: rgba(201, 169, 98, 0.03);
    line-height: 1;
    pointer-events: none;
}

.excerpt-wrapper {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.excerpt {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    font-style: italic;
    text-align: center;
    border: none;
}

.excerpt p {
    margin-bottom: var(--spacing-md);
}

.excerpt p:last-child {
    color: var(--color-primary);
    font-weight: 500;
}

/* ================================
   About Section
   ================================ */
.about-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-light) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.about-image {
    display: flex;
    justify-content: center;
}

.author-placeholder {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg-dark) 100%);
    border: 2px solid rgba(201, 169, 98, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-primary);
    letter-spacing: 0.1em;
}

.about-text h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.about-text p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

/* ================================
   Contact Section
   ================================ */
.contact-section {
    background:
        radial-gradient(ellipse at 50% 100%, rgba(201, 169, 98, 0.05) 0%, transparent 50%),
        var(--color-bg-dark);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    margin-bottom: var(--spacing-md);
}

.form-group {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.form-group input[type="email"] {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    padding: 1rem 1.5rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-text-dim);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.form-group input[type="email"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.form-group input[type="email"]::placeholder {
    color: var(--color-text-dim);
}

.form-note {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    margin-top: var(--spacing-sm);
}

.email-link {
    display: inline-block;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

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

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    color: var(--color-text-muted);
    border: 1px solid var(--color-text-dim);
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.social-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(201, 169, 98, 0.1);
    transform: translateY(-3px);
}

/* ================================
   Footer
   ================================ */
.footer {
    padding: var(--spacing-lg) 0;
    background: var(--color-bg-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-sm);
}

.footer-logo span {
    color: var(--color-primary);
}

.copyright {
    font-size: 0.85rem;
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-xs);
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ================================
   Animations
   ================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

@keyframes scrollBounce {
    0%, 100% {
        transform: rotate(45deg) translateY(0);
    }
    50% {
        transform: rotate(45deg) translateY(5px);
    }
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

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

    .book-container {
        max-width: 300px;
        transform: none;
    }

    .book-container:hover {
        transform: scale(1.02);
    }

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--color-bg-dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-md);
        transition: right var(--transition-normal);
    }

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

    .nav-menu a {
        font-size: 1.25rem;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .section {
        padding: var(--spacing-lg) 0;
    }

    .hero {
        min-height: auto;
        padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-lg);
    }

    .scroll-indicator {
        display: none;
    }

    .form-group {
        flex-direction: column;
        align-items: center;
    }

    .form-group input[type="email"] {
        max-width: 100%;
    }

    .book-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 3rem;
        --spacing-xl: 5rem;
    }

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

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.8rem;
    }
}

/* ================================
   Accessibility
   ================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Selection color */
::selection {
    background-color: var(--color-primary);
    color: var(--color-bg-dark);
}