/* CSS Variables for easy customization */
:root {
    /* Colors */
    --color-primary: #000;
    --color-background: #fff;
    --color-text: #000;
    --color-text-muted: #666;
    --color-disabled: #999;
    --color-hover-bg: #f0f0f0;

    /* Typography */
    --font-family: 'Courier New', Courier, monospace;
    --font-size-base: 1rem;
    --font-size-xs: 0.7rem;
    --font-size-sm: 0.75rem;
    --font-size-md: 0.85rem;
    --font-size-lg: 0.9rem;
    --font-size-xl: 1.2rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 6rem;
    --line-height-base: 1.5;
    --line-height-tight: 1.3;
    --line-height-relaxed: 1.6;
    --letter-spacing-tight: 1px;
    --letter-spacing-wide: 2px;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Borders */
    --border-width-thin: 2px;
    --border-width-thick: 3px;
    --border-color: var(--color-primary);
    --border-radius: 0; /* Can be changed for rounded corners */

    /* Layout */
    --container-max-width: 900px;
    --content-max-width: 700px;
    --archive-grid-min: 180px;
    --archive-grid-min-mobile: 140px;
    --archive-thumbnail-height: 120px;

    /* Transitions (for future enhancements) */
    --transition-speed: 0.2s;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Site Header Image */
.site-header-image {
    width: 100%;
    overflow: hidden;
    margin-bottom: 0;
}

.site-header-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Site Footer Image */
.site-footer-image {
    width: 100%;
    overflow: hidden;
    margin-top: 0;
}

.site-footer-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Header and Navigation */
header {
    border-bottom: var(--border-width-thick) solid var(--border-color);
    padding: var(--space-lg) 0;
    margin-bottom: var(--space-xl);
}

/* Header with image variant - no border, no padding, centered nav */
header.header-with-image {
    border-bottom: none;
    padding: var(--space-md) 0 0 0;
    margin-bottom: var(--space-sm);
}

header.header-with-image nav .container {
    justify-content: center;
}

header.header-with-image .nav-links a {
    font-size: var(--font-size-xl);
    font-weight: bold;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.nav-brand a {
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--font-size-2xl);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-logo {
    height: 2.5rem;
    width: auto;
    display: inline-block;
    vertical-align: middle;
}

.nav-logo-beside {
    /* Logo displayed beside the title */
}

.nav-logo-replace {
    /* Logo replaces the title - can be larger */
    height: 3rem;
}

.nav-title {
    /* Title text when displayed beside logo */
    display: inline-block;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    text-transform: lowercase;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.nav-links a:hover,
.nav-links a.active {
    text-decoration: underline;
}

.nav-icon {
    height: 1rem;
    width: auto;
    display: inline-block;
    vertical-align: middle;
}

/* Main content */
main {
    min-height: calc(100vh - 250px);
    padding: 0 0 var(--space-2xl) 0;
}

/* Page header */
.page-header {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: var(--border-width-thin) solid var(--border-color);
}

.page-header h1 {
    color: var(--color-text);
    font-size: var(--font-size-3xl);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
}

.page-header p {
    margin-top: var(--space-sm);
    font-size: var(--font-size-lg);
}

/* Content sections */
.about-content {
    max-width: var(--content-max-width);
}

.about-content h2 {
    color: var(--color-text);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    font-size: var(--font-size-xl);
    letter-spacing: var(--letter-spacing-tight);
}

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

.about-content ul {
    margin-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

.about-content li {
    margin-bottom: 0.3rem;
}

/* Button */
.btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background-color: var(--color-primary);
    color: var(--color-background);
    text-decoration: none;
    border: var(--border-width-thin) solid var(--border-color);
    cursor: pointer;
    font-size: var(--font-size-lg);
    font-family: var(--font-family);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
}

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

/* Error page */
.error-page {
    text-align: center;
    padding: var(--space-3xl) var(--space-md);
}

.error-page h1 {
    font-size: var(--font-size-4xl);
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.error-page h2 {
    color: var(--color-text);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
}

.error-page p {
    color: var(--color-text);
    margin-bottom: var(--space-xl);
}

/* Comic Container */
.comic-container {
    border: var(--border-width-thick) solid var(--border-color);
    padding: var(--space-md);
}

/* Full-width comic variant */
.comic-container-fullwidth {
    border: none;
    padding: 0;
}

.comic-container-fullwidth .comic-header,
.comic-container-fullwidth .comic-navigation,
.comic-container-fullwidth .comic-transcript {
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.comic-container-fullwidth .comic-image {
    width: calc(100vw - 4rem);
    max-width: calc(100vw - 4rem);
    margin-left: calc(-1 * (50vw - 50% - 2rem));
    margin-right: calc(-1 * (50vw - 50% - 2rem));
}

.comic-container-fullwidth .comic-image img {
    width: 100%;
    max-width: 100%;
}

/* Plain comic variant - no header, no nav border */
.comic-container-plain .comic-navigation {
    border-top: none;
    padding-top: 0;
}

.comic-header {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: var(--border-width-thin) solid var(--border-color);
}

.comic-header h1 {
    color: var(--color-text);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
}

.comic-date {
    color: var(--color-text);
    font-size: var(--font-size-md);
}

/* Comic Image */
.comic-image {
    text-align: center;
    margin-bottom: var(--space-lg);
    padding: var(--space-sm);
    background: var(--color-background);
}

.comic-image a {
    display: block;
    cursor: pointer;
}

.comic-image img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Comic Navigation */
.comic-navigation {
    border-top: var(--border-width-thin) solid var(--border-color);
    padding-top: var(--space-md);
    margin-bottom: var(--space-md);
}

.nav-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.btn-nav {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

.btn-disabled {
    background-color: var(--color-background);
    color: var(--color-disabled);
    border-color: var(--color-disabled);
    cursor: not-allowed;
}

.btn-disabled:hover {
    background-color: var(--color-background);
    color: var(--color-disabled);
}

/* Icon-based navigation buttons */
.btn-icon-nav {
    display: inline-block;
    cursor: pointer;
    transition: opacity var(--transition-speed);
}

.btn-icon-nav img {
    height: 2rem;
    width: auto;
    display: block;
}

.btn-icon-nav:hover {
    opacity: 0.7;
}

.btn-icon-disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-icon-disabled:hover {
    opacity: 0.3;
}

.comic-date-display {
    padding: 0 var(--space-sm);
    color: var(--color-text);
    font-weight: bold;
    margin: 0 var(--space-xs);
    font-size: var(--font-size-md);
    font-style: italic;
}

/* Comic Transcript */
.comic-transcript {
    border: var(--border-width-thin) solid var(--border-color);
    padding: var(--space-md);
    margin-top: var(--space-md);
}

.comic-transcript h3 {
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    font-size: var(--font-size-lg);
    letter-spacing: var(--letter-spacing-tight);
}

.comic-transcript p {
    color: var(--color-text);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-lg);
}

.comic-transcript ul,
.comic-transcript ol {
    margin-left: var(--space-lg);
    margin-bottom: var(--space-md);
    color: var(--color-text);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-lg);
}

.comic-transcript li {
    margin-bottom: 0.3rem;
}

/* Archive Content */
.archive-content {
    margin-top: var(--space-md);
}

/* Section Headers for Archive */
.section-header {
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: var(--border-width-thin) solid var(--border-color);
}

.section-header:first-child {
    margin-top: 0;
}

.section-header h2 {
    color: var(--color-text);
    font-size: var(--font-size-xl);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
}

.archive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--archive-grid-min), 1fr));
    gap: var(--space-md);
}

.archive-item {
    border: var(--border-width-thin) solid var(--border-color);
    overflow: hidden;
}

.archive-item:hover {
    background: var(--color-hover-bg);
}

.archive-item a {
    text-decoration: none;
    color: var(--color-text);
    display: block;
}

.archive-item img {
    width: 100%;
    height: var(--archive-thumbnail-height);
    object-fit: cover;
    display: block;
    border-bottom: var(--border-width-thin) solid var(--border-color);
}

.archive-info {
    padding: 0.75rem;
}

.archive-info h3 {
    color: var(--color-text);
    font-size: var(--font-size-md);
    margin-bottom: var(--space-xs);
    line-height: var(--line-height-tight);
    text-transform: uppercase;
}

.archive-date {
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

/* Full-width Archive Mode */
.page-header-fullwidth {
    padding: 0 var(--space-xl);
}

.archive-content-fullwidth {
    max-width: 100%;
    padding: 0 var(--space-xl);
}

.archive-grid-fullwidth {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.archive-item-fullwidth img {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
}

.archive-item-fullwidth .archive-info {
    text-align: center;
    padding: var(--space-sm);
}

.archive-item-fullwidth .archive-date {
    font-size: var(--font-size-md);
    margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .nav-brand a {
        font-size: var(--font-size-xl);
    }

    .nav-logo {
        height: 2rem;
    }

    .nav-logo-replace {
        height: 2.5rem;
    }

    .nav-links {
        gap: var(--space-md);
    }

    .btn-nav {
        padding: 0.3rem 0.6rem;
        font-size: var(--font-size-sm);
    }

    .btn-icon-nav img {
        height: 1.5rem;
    }

    .comic-date-display {
        font-size: var(--font-size-xs);
        flex-basis: 100%;
        text-align: center;
        padding-top: var(--space-xs);
    }

    /* Keep icon navigation on single line on mobile */
    .nav-buttons:has(.btn-icon-nav) {
        flex-wrap: nowrap;
    }

    .nav-buttons:has(.btn-icon-nav) .comic-date-display {
        flex-basis: auto;
        padding-top: 0;
        font-size: var(--font-size-xs);
        white-space: nowrap;
    }

    .nav-buttons {
        flex-wrap: wrap;
    }

    .archive-grid {
        grid-template-columns: repeat(auto-fill, minmax(var(--archive-grid-min-mobile), 1fr));
        gap: 0.75rem;
    }

    .archive-grid-fullwidth {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .page-header-fullwidth {
        padding: 0 var(--space-md);
    }

    .archive-content-fullwidth {
        padding: 0 var(--space-md);
    }

    .comic-container {
        padding: 0.75rem;
    }

    /* Compact footer mobile adjustments */
    footer.compact-footer .container {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--space-xs);
    }

    footer.compact-footer .footer-content {
        flex-direction: column;
        align-items: center;
        gap: var(--space-xs);
    }

    footer.compact-footer .footer-section {
        flex-direction: column;
        gap: var(--space-xs);
    }

    footer.compact-footer .footer-section::after {
        display: none;
    }

    footer.compact-footer .social-links {
        flex-direction: column;
    }

    footer.compact-footer .footer-bottom::before {
        display: none;
    }
}

/* Footer */
footer {
    border-top: var(--border-width-thick) solid var(--border-color);
    padding: var(--space-xl) 0;
    margin-top: var(--space-2xl);
}

.footer-content {
    display: flex;
    justify-content: space-around;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.footer-section {
    flex: 1;
    min-width: 200px;
}

.footer-section h3 {
    color: var(--color-text);
    font-size: var(--font-size-lg);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
    margin-bottom: var(--space-md);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.social-links a {
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--font-size-md);
}

.social-links a:hover {
    text-decoration: underline;
}

.social-icon {
    height: 1.5rem;
    width: auto;
    display: block;
    transition: opacity var(--transition-speed);
}

.social-icon:hover {
    opacity: 0.7;
}

/* Icon-only social links layout */
.social-links-icons {
    flex-direction: row;
    align-items: center;
}

.social-links-icons a:hover {
    text-decoration: none;
}

.newsletter-form {
    display: flex;
    gap: var(--space-sm);
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: var(--space-sm);
    border: var(--border-width-thin) solid var(--border-color);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
}

.newsletter-form button {
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-primary);
    color: var(--color-background);
    border: var(--border-width-thin) solid var(--border-color);
    cursor: pointer;
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    text-transform: uppercase;
}

.newsletter-form button:hover {
    background-color: var(--color-background);
    color: var(--color-primary);
}

.newsletter-placeholder {
    font-size: var(--font-size-md);
    color: var(--color-text-muted);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: var(--border-width-thin) solid var(--border-color);
}

.footer-bottom p {
    margin: 0;
    color: var(--color-text);
    font-size: var(--font-size-md);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
}

.footer-bottom a.api-link {
    color: var(--color-text);
    text-decoration: none;
    font-size: var(--font-size-md);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-tight);
}

.footer-bottom a.api-link:hover {
    text-decoration: underline;
}

/* Compact Footer Mode */
footer.compact-footer {
    border-top: none;
    padding: 0;
    margin-top: 0;
}

footer.compact-footer .container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

footer.compact-footer .footer-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: 0;
    flex-wrap: wrap;
}

footer.compact-footer .footer-section {
    flex: none;
    min-width: auto;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

footer.compact-footer .footer-section h3 {
    font-size: var(--font-size-sm);
    margin-bottom: 0;
    display: inline;
}

footer.compact-footer .social-links {
    flex-direction: row;
    gap: var(--space-sm);
}

footer.compact-footer .social-links-icons {
    gap: var(--space-md);
}

footer.compact-footer .social-links a {
    font-size: var(--font-size-sm);
}

footer.compact-footer .newsletter-placeholder {
    font-size: var(--font-size-sm);
    margin: 0;
}

footer.compact-footer .footer-bottom {
    border-top: none;
    padding-top: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

footer.compact-footer .footer-bottom::before {
    content: '|';
    margin-right: var(--space-md);
    color: var(--color-text-muted);
}

footer.compact-footer .footer-bottom p {
    font-size: var(--font-size-sm);
    margin: 0;
}

footer.compact-footer .footer-bottom a.api-link {
    font-size: var(--font-size-sm);
}

footer.compact-footer .footer-bottom a.api-link::before {
    content: '|';
    margin: 0 var(--space-sm);
    color: var(--color-text-muted);
}

/* Add separator between sections in compact mode */
footer.compact-footer .footer-section:not(:last-child)::after {
    content: '|';
    margin-left: var(--space-md);
    color: var(--color-text-muted);
}