/* ========================================
   Mushroom Publishing
   Main Stylesheet
   ======================================== */

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    /* Brand colours */
    --color-primary: oklch(0.45 0.08 180);
    --color-primary-dark: oklch(0.38 0.08 180);
    --color-primary-light: oklch(0.92 0.02 180);
    
    /* Neutrals */
    --color-text: oklch(0.25 0.01 180);
    --color-text-muted: oklch(0.45 0.01 180);
    --color-bg: oklch(0.985 0.005 90);
    --color-bg-alt: oklch(0.97 0.005 180);
    --color-border: oklch(0.88 0.01 180);
    
    /* Typography */
    --font-display: 'Libre Baskerville', Georgia, serif;
    --font-body: 'Source Sans 3', system-ui, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Layout */
    --max-width: 1100px;
    --header-height: 4rem;
}

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

html {
    font-size: 18px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* ========================================
   Typography
   ======================================== */
h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.3;
}

h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    color: var(--color-primary);
}

h2 {
    font-size: clamp(1.4rem, 3vw, 1.75rem);
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

h3 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--space-md);
}

p:last-child {
    margin-bottom: 0;
}

/* ========================================
   Layout
   ======================================== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ========================================
   Header
   ======================================== */
.site-header {
    background: var(--color-primary);
    color: white;
    padding: var(--space-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
}

.site-title {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 400;
    color: white;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.site-title:hover {
    color: white;
    opacity: 0.9;
}

.site-nav {
    display: flex;
    gap: var(--space-lg);
}

.site-nav a {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
}

.site-nav a:hover {
    color: white;
}

.site-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: white;
    transition: width 0.2s ease;
}

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

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: var(--space-xs);
}

.nav-toggle svg {
    width: 28px;
    height: 28px;
}

/* ========================================
   Hero
   ======================================== */
.hero {
    padding: var(--space-3xl) 0;
    text-align: center;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.hero h1 {
    margin-bottom: var(--space-md);
}

.hero-tagline {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
    text-wrap: balance;
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
    padding: var(--space-2xl) 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.page-header p {
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}

/* ========================================
   Imprints Grid
   ======================================== */
.imprints {
    padding: var(--space-3xl) 0;
}

.imprints-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-xl);
}

.imprint-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: var(--space-xl);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.imprint-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.imprint-card--wide {
    grid-column: span 2;
}

.imprint-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.imprint-card p {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.imprint-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 500;
    font-size: 0.95rem;
}

.imprint-link svg {
    width: 18px;
    height: 18px;
    transition: transform 0.2s ease;
}

.imprint-link:hover svg {
    transform: translateX(3px);
}

.imprint-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25em 0.6em;
    border-radius: 3px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.imprint-badge--coming {
    background: oklch(0.95 0.05 80);
    color: oklch(0.45 0.12 80);
}

/* ========================================
   Content Sections
   ======================================== */
.content-section {
    padding: var(--space-2xl) 0;
}

.content-section + .content-section {
    border-top: 1px solid var(--color-border);
}

.content-section--alt {
    background: var(--color-bg-alt);
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
}

.about-content {
    max-width: 700px;
}

.about-content p {
    color: var(--color-text-muted);
}

/* ========================================
   Prose
   ======================================== */
.prose {
    max-width: 700px;
}

.prose p {
    color: var(--color-text-muted);
}

.prose p:first-of-type {
    color: var(--color-text);
    font-size: 1.1rem;
}

.prose h2 {
    font-size: 1.35rem;
    margin: var(--space-xl) 0 var(--space-md);
}

.prose ul {
    margin: var(--space-md) 0;
    padding-left: var(--space-xl);
}

.prose li {
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

/* ========================================
   Contact Section
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.contact-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: var(--space-xl);
}

.contact-card h3 {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.contact-card p {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.contact-card a {
    font-weight: 500;
}

/* ========================================
   Notice Box
   ======================================== */
.notice {
    background: oklch(0.95 0.03 80);
    border: 1px solid oklch(0.85 0.08 80);
    border-radius: 6px;
    padding: var(--space-lg);
    margin-top: var(--space-xl);
}

.notice h3 {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    color: oklch(0.4 0.1 80);
    margin-bottom: var(--space-xs);
}

.notice p {
    font-size: 0.95rem;
    color: oklch(0.35 0.05 80);
    margin: 0;
}

/* ========================================
   Books Page
   ======================================== */
.books-section {
    padding: var(--space-2xl) 0;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.book-card {
    display: flex;
    flex-direction: column;
}

.book-cover {
    aspect-ratio: 2 / 3;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    overflow: hidden;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.book-cover:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-card h2,
.book-card h3 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}

.book-card h2 a,
.book-card h3 a {
    color: var(--color-text);
}

.book-card h2 a:hover,
.book-card h3 a:hover {
    color: var(--color-primary);
}

.book-author {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.book-genre {
    font-size: 0.8rem;
    color: var(--color-primary);
    font-weight: 500;
}

.book-imprint {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
}

.placeholder-message {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    color: var(--color-text-muted);
}

.placeholder-message h2 {
    font-family: var(--font-display);
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

/* ========================================
   Error Page
   ======================================== */

.error-page {
    padding: var(--space-3xl) 0;
    text-align: center;
    min-height: 50vh;
    display: flex;
    align-items: center;
}

.error-page h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--space-md);
}

.error-page > .container > p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.error-nav {
    text-align: left;
    max-width: 300px;
    margin: var(--space-xl) auto 0;
}

.error-nav h2 {
    font-size: 1rem;
    font-family: var(--font-body);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.error-nav ul {
    list-style: none;
    padding: 0;
}

.error-nav li {
    margin-bottom: var(--space-sm);
}

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

/* ========================================
   Archive Pages
   ======================================== */

.archive-section {
    margin: var(--space-xl) 0;
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.archive-section:last-of-type {
    border-bottom: none;
}

.archive-section h2 {
    font-size: 1.3rem;
    margin-bottom: var(--space-sm);
}

.archive-section ul {
    margin-top: var(--space-md);
    padding-left: var(--space-lg);
}

.archive-section li {
    margin-bottom: var(--space-xs);
}

.archive-note {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: var(--color-bg-alt);
    border-radius: 8px;
    text-align: center;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background: var(--color-primary);
    color: white;
    padding: var(--space-xl) 0;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md) var(--space-lg);
}

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

.footer-links a:hover {
    color: white;
}

.footer-copy {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-copy a {
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 640px) {
    html {
        font-size: 17px;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-primary-dark);
        flex-direction: column;
        padding: var(--space-md) var(--space-lg);
        gap: var(--space-sm);
    }
    
    .site-nav.is-open {
        display: flex;
    }
    
    .site-nav a::after {
        display: none;
    }
    
    .header-inner {
        position: relative;
    }
    
    .hero {
        padding: var(--space-2xl) 0;
    }
    
    .imprints,
    .about {
        padding: var(--space-2xl) 0;
    }
    
    .imprint-card--wide {
        grid-column: span 1;
    }
    
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}