/* ===================================
   CSS Custom Properties (Variables)
   =================================== */
:root {
    /* Colors - Literary Palette */
    --color-text: #2a2a2a;
    --color-text-light: #6b6b6b;
    --color-background: #fdfbf7;
    --color-cream: #f9f6f0;
    --color-accent: #8b5a3c;
    --color-accent-light: #b17d5f;
    --color-border: #e8e3d8;
    --color-hover: #6d4530;
    --color-shadow: rgba(139, 90, 60, 0.1);

    /* Typography */
    --font-serif: 'Iowan Old Style', 'Palatino Linotype', 'URW Palladio L', P052, serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-signature: 'Brush Script MT', 'Lucida Handwriting', 'Apple Chancery', cursive;

    /* Spacing */
    --spacing-unit: 1rem;
    --spacing-xs: calc(var(--spacing-unit) * 0.5);
    --spacing-sm: calc(var(--spacing-unit) * 1);
    --spacing-md: calc(var(--spacing-unit) * 2);
    --spacing-lg: calc(var(--spacing-unit) * 4);
    --spacing-xl: calc(var(--spacing-unit) * 6);

    /* Layout */
    --max-width: 1200px;
    --content-width: 720px;
    --transition: all 0.3s ease;
}

/* ===================================
   CSS Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--color-hover);
}

a:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ===================================
   Layout Components
   =================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-bottom: 2px solid var(--color-border);
    overflow: hidden;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Washed-out background image */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

/* Add subtle paper texture */
.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(139, 90, 60, 0.03) 2px, rgba(139, 90, 60, 0.03) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(139, 90, 60, 0.03) 2px, rgba(139, 90, 60, 0.03) 4px);
    opacity: 0.5;
}

/* Hero background image - raw image without adjustments */
.hero-background {
    background-image: url('images/hero-background.jpg');
    background-size: cover;
    background-position: center;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

/* Author photo */
.author-photo {
    width: 220px;
    height: 220px;
    margin-bottom: var(--spacing-sm);
}

.author-photo-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid var(--color-background);
    box-shadow: 0 8px 24px var(--color-shadow),
                0 2px 8px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.author-photo-placeholder:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 32px var(--color-shadow),
                0 4px 12px rgba(0, 0, 0, 0.12);
}

.photo-text {
    color: white;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.05em;
}

/* Author photo with real image */
.author-photo-placeholder {
    background-image: url('images/author-photo.png');
    background-size: cover;
    background-position: center;
    background-color: transparent;
}

.photo-text {
    display: none;
}

.hero-text {
    max-width: var(--content-width);
}

.author-name {
    margin-bottom: var(--spacing-sm);
}

.author-name-image {
    max-width: 600px;
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.2));
}

.tagline {
    font-size: 1.375rem;
    color: white;
    line-height: 1.6;
    font-style: italic;
}

/* ===================================
   Navigation
   =================================== */
.nav {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(253, 251, 247, 0.95);
}

.nav-list {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.nav-list a {
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
}

.nav-list a:hover {
    background-color: var(--color-shadow);
    color: var(--color-accent);
}

/* ===================================
   About Section
   =================================== */
.about {
    position: relative;
    background-image: url('images/pergamin.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* Overlay for readability */
.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(253, 251, 247, 0.75);
    z-index: 0;
}

.about .container {
    max-width: 960px;
    position: relative;
    z-index: 1;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: 2.25rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    margin: var(--spacing-sm) auto 0;
}

.bio-content {
    position: relative;
    column-count: 2;
    column-gap: var(--spacing-lg);
    column-rule: 1px solid rgba(139, 90, 60, 0.15);
}

.bio-text {
    font-size: 1.1875rem;
    line-height: 1.9;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.bio-text:last-child {
    margin-bottom: 0;
}

/* Drop cap for first paragraph */
.bio-text.drop-cap::first-letter {
    font-family: var(--font-serif);
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 0.85;
    float: left;
    margin: 0.1em 0.15em 0 0;
    color: var(--color-accent);
}

/* Decorative quote element */
.decorative-quote {
    position: absolute;
    top: -20px;
    right: -40px;
    width: 120px;
    height: 120px;
    opacity: 0.08;
    pointer-events: none;
}

.quote-icon {
    width: 100%;
    height: 100%;
    color: var(--color-accent);
}

/* ===================================
   Books Section
   =================================== */
.books {
    background-color: var(--color-cream);
}

/* Featured Book */
.featured-book {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: var(--spacing-lg);
    background-color: var(--color-background);
    border: 2px solid var(--color-accent);
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
    box-shadow: 0 8px 24px rgba(139, 90, 60, 0.15);
    position: relative;
}

.featured-book-cover {
    position: relative;
    display: flex;
    align-items: stretch;
}

.featured-book-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
}

.featured-book:hover .featured-book-image {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.featured-book-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.featured-book-title {
    font-size: 2rem;
    color: var(--color-accent);
    margin: 0;
    line-height: 1.2;
}

.featured-book-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    font-style: italic;
    margin: 0;
}

.featured-book-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text);
    margin: var(--spacing-sm) 0;
}

.featured-book-quote {
    background-color: rgba(139, 90, 60, 0.05);
    border-left: 4px solid var(--color-accent);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: var(--spacing-sm) 0;
    font-style: italic;
}

.featured-book-quote p {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 1rem;
    line-height: 1.7;
}

.featured-book-quote cite {
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-style: normal;
}

.featured-book-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: auto;
    flex-wrap: wrap;
}

.book-button {
    padding: 0.875rem 1.5rem;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
}

.book-button-primary {
    background-color: var(--color-accent);
    color: white;
    box-shadow: 0 2px 8px rgba(139, 90, 60, 0.3);
}

.book-button-primary:hover {
    background-color: var(--color-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 90, 60, 0.4);
}

.book-button-secondary {
    background-color: white;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.book-button-secondary:hover {
    background-color: var(--color-accent);
    color: white;
    transform: translateY(-2px);
}

/* Forthcoming Books */
.forthcoming-section {
    margin-top: var(--spacing-xl);
}

.forthcoming-title {
    font-size: 1.5rem;
    color: var(--color-text-light);
    text-align: center;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 400;
}

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

.forthcoming-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    opacity: 0.7;
    transition: var(--transition);
    position: relative;
}

.forthcoming-card:hover {
    opacity: 1;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.forthcoming-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background-color: var(--color-accent);
    color: white;
    padding: 0.375rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 10;
}

/* Keep existing book card styles for forthcoming books */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.book-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.book-card:hover {
    box-shadow: 0 8px 24px var(--color-shadow),
                0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.book-cover {
    width: 100%;
    aspect-ratio: 3 / 2;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.book-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg,
        var(--color-accent) 0%,
        var(--color-accent-light) 100%);
    color: var(--color-cream);
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    position: relative;
}

/* Add book texture to placeholders */
.book-cover-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        );
}

/* Unique gradient for each book card */
.book-card:nth-child(1) .book-cover-placeholder {
    background: linear-gradient(135deg, #8b5a3c 0%, #a67555 100%);
}

.book-card:nth-child(2) .book-cover-placeholder {
    background: linear-gradient(135deg, #6d4530 0%, #8b5a3c 100%);
}

.book-card:nth-child(3) .book-cover-placeholder {
    background: linear-gradient(135deg, #5a3825 0%, #7d5340 100%);
}

/* Book cover images */
.book-cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.book-details {
    padding: var(--spacing-md);
}

.book-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.book-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    font-size: 1rem;
}

.book-link {
    display: inline-block;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-accent);
    transition: var(--transition);
}

.book-link:hover {
    color: var(--color-hover);
    transform: translateX(4px);
}

/* ===================================
   Newsletter Section
   =================================== */
.newsletter {
    background-color: var(--color-accent);
    color: white;
}

.newsletter .section-title,
.newsletter-name {
    color: white;
}

.newsletter .container {
    max-width: var(--content-width);
}

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

.newsletter-name {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.newsletter-text {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-sm);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    font-size: 1rem;
    font-family: var(--font-sans);
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transition: var(--transition);
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.newsletter-input:focus {
    outline: none;
    border-color: white;
    background-color: rgba(255, 255, 255, 0.15);
}

.newsletter-button-link {
    display: inline-block;
    text-decoration: none;
    margin-top: var(--spacing-sm);
}

.newsletter-button {
    padding: 1rem 1.75rem;
    background-color: #a82c3e;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 2px 8px rgba(168, 44, 62, 0.3);
}

.newsletter-button:hover {
    background-color: #8f2536;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(168, 44, 62, 0.4);
}

.newsletter-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(168, 44, 62, 0.3);
}

.button-icon {
    font-size: 1.2rem;
    display: inline-flex;
    align-items: center;
}

.button-arrow {
    font-size: 1.2rem;
    display: inline-flex;
    align-items: center;
    margin-left: auto;
}

.newsletter-note {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ===================================
   Publications Section
   =================================== */
.publications {
    background: linear-gradient(to bottom, var(--color-background) 0%, var(--color-cream) 100%);
}

.publications .container {
    max-width: var(--content-width);
}

.publications-list {
    margin-top: var(--spacing-md);
}

.publication-item {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.publication-item:last-child {
    border-bottom: none;
}

.publication-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.publication-meta {
    font-size: 1rem;
    color: var(--color-text-light);
    display: flex;
    gap: var(--spacing-sm);
}

.publication-venue {
    font-style: italic;
}

.publication-year::before {
    content: "•";
    margin-right: var(--spacing-xs);
}

/* ===================================
   Footer Section
   =================================== */
.footer {
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent-light), transparent);
}

.footer-title {
    color: white;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.footer-email {
    margin-bottom: var(--spacing-md);
}

.footer-email a {
    color: white;
    font-size: 1.25rem;
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, 0.3);
}

.footer-email a:hover {
    text-decoration-color: white;
}

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

.social-link {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: var(--transition);
}

.social-link:hover {
    color: white;
}

.footer-copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .hero {
        min-height: 400px;
        padding: var(--spacing-lg) 0;
    }

    .author-photo {
        width: 140px;
        height: 140px;
    }

    .author-name {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.125rem;
    }

    .nav-list {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .nav-list a {
        font-size: 0.875rem;
        padding: var(--spacing-xs);
    }

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

    .bio-text.drop-cap::first-letter {
        font-size: 3.5rem;
    }

    .bio-content {
        column-count: 1;
    }

    .decorative-quote {
        display: none;
    }

    .featured-book {
        grid-template-columns: 1fr;
        padding: var(--spacing-md);
    }

    .featured-book-cover {
        max-width: 300px;
        margin: 0 auto;
    }

    .featured-book-title {
        font-size: 1.75rem;
    }

    .featured-book-description {
        font-size: 1rem;
    }

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

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

    .newsletter-form {
        flex-direction: column;
    }

    .publication-meta {
        flex-direction: column;
        gap: 0;
    }

    .publication-year::before {
        content: "";
        margin-right: 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        min-height: 350px;
    }

    .author-photo {
        width: 120px;
        height: 120px;
    }

    .author-name {
        font-size: 2rem;
    }

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

    .bio-text.drop-cap::first-letter {
        font-size: 3rem;
    }
}

/* ===================================
   Accessibility Enhancements
   =================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip to main content link for screen readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}