/* 
 * Atari ST GEM Theme for BSSG
 * Recreating the Atari ST's Graphical Environment Manager interface from the 1980s
 * 
 * IMPROVEMENTS APPLIED:
 * - Added comprehensive reduced motion support
 * - Enhanced accessibility with focus outlines
 * - Added text browser fallbacks for decorative elements
 * - Optimized font loading with better fallbacks
 * - Enhanced performance while maintaining authentic GEM look
 */

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
        transform: none !important;
    }
}

:root {
    /* Atari ST GEM color scheme */
    --bg-color: #c0c0c0;
    --window-bg: #ffffff;
    --text-color: #000000;
    --link-color: #0000aa;
    --link-visited: #550055;
    --header-color: #000000;
    --border-color: #000000;
    --title-bar: #000080;
    --title-text: #ffffff;
    --dropdown-bg: #c0c0c0;
    --icon-color: #000000;
    --menu-highlight: #000080;
    --menu-text: #ffffff;
    --title-gradient-start: #ffffff;
    --title-gradient-end: #aaaaff;
    
    /* Typography - ENHANCED fallbacks for text browsers */
    --font-main: 'Courier New', 'Lucida Console', Monaco, 'Consolas', monospace;
    --font-headings: 'Courier New', 'Lucida Console', Monaco, 'Consolas', monospace;
    --font-mono: 'Courier New', 'Lucida Console', Monaco, 'Consolas', monospace;
    
    /* Sizing */
    --content-width: 800px;
    --border-width: 1px;
    --border-radius: 0;
    --transition: 0.2s ease;
}

/* Base elements */
body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 15px;
    line-height: 1.4;
    font-size: 14px;
}

/* GEM window style with border */
.container {
    max-width: var(--content-width);
    margin: 20px auto;
    border: var(--border-width) solid var(--border-color);
    background-color: var(--window-bg);
    position: relative;
    box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.3);
}

/* Title bar in classic GEM style */
header {
    background-color: var(--title-bar);
    color: var(--title-text);
    padding: 2px 10px 15px 10px;
    margin: 0;
    position: relative;
    font-weight: bold;
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

/* Window control icons */
.window-controls {
    display: flex;
    gap: 5px;
}

.gem-control {
    width: 16px;
    height: 16px;
    background-color: var(--window-bg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    cursor: pointer;
    transition: background-color var(--transition);
}

.gem-control:hover {
    background-color: var(--dropdown-bg);
}

.gem-control:focus {
    outline: 2px solid var(--title-text);
    outline-offset: 2px;
}

/* TEXT BROWSER FALLBACK: Provide text alternatives for window controls */
.gem-close::after {
    content: "×";
    color: black;
    font-weight: bold;
}

/* TEXT BROWSER FALLBACK: Use "X" when × isn't supported */
@supports not (content: "×") {
    .gem-close::after {
        content: "X";
    }
}

.gem-minimize::after {
    content: "_";
    color: black;
    position: relative;
    top: -3px;
}

.gem-maximize::after {
    content: "□";
    color: black;
}

/* TEXT BROWSER FALLBACK: Use "[]" when □ isn't supported */
@supports not (content: "□") {
    .gem-maximize::after {
        content: "[]";
    }
}

header h1 {
    margin: 0;
    padding: 0;
    font-size: 1rem;
    font-weight: bold;
    color: var(--title-text);
    width: 100%;
    display: flex;
    justify-content: space-between;
}

header p {
    margin: 2px 0 0 0;
    padding: 0;
    font-size: 0.9rem;
    font-weight: normal;
    color: var(--title-text);
}

/* Navigation as GEM menu bar */
nav {
    background-color: var(--dropdown-bg);
    border: var(--border-width) solid var(--border-color);
    display: flex;
    flex-wrap: nowrap;
    padding: 0;
    overflow-x: visible;
    justify-content: center;
    position: relative;
    min-height: 30px;
    width: fit-content;
    margin: 10px auto 0 auto;
    align-self: center;
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    padding: 3px 12px;
    margin: 0;
    font-size: 0.9rem;
    position: relative;
    display: inline-block;
    border-right: var(--border-width) solid var(--border-color);
    white-space: nowrap;
    transition: all var(--transition);
}

nav a:first-child {
    border-left: none;
}

nav a:last-child {
    border-right: none;
}

nav a:hover, nav a:focus {
    background-color: var(--menu-highlight);
    color: var(--menu-text);
}

nav a:focus {
    outline: 2px solid var(--title-text);
    outline-offset: 2px;
}

/* Selected menu item */
nav a.active {
    background-color: var(--menu-highlight);
    color: var(--menu-text);
}

/* Content area */
main {
    padding: 15px;
    background-color: var(--window-bg);
    min-height: 300px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headings);
    color: var(--header-color);
    margin-top: 1.2rem;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

h1 {
    font-size: 1.6rem;
}

h2 {
    font-size: 1.4rem;
}

.posts-list h2,
h3 {
    font-size: 1.2rem;
}

article h1 {
    font-size: 1.4rem;
    margin-top: 0;
}

p {
    margin-bottom: 1rem;
    line-height: 1.5;
}

/* Links */
a {
    color: var(--link-color);
    text-decoration: underline;
    transition: color var(--transition);
}

a:visited {
    color: var(--link-visited);
}

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

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

/* GEM-style button */
.gem-button {
    background-color: var(--dropdown-bg);
    color: var(--text-color);
    border: var(--border-width) solid var(--border-color);
    padding: 3px 10px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color var(--transition);
}

.gem-button:active {
    background-color: var(--menu-highlight);
    color: var(--menu-text);
}

.gem-button:focus {
    outline: 2px solid var(--menu-highlight);
    outline-offset: 2px;
}

article {
    margin-bottom: 20px;
    padding: 15px;
    border-bottom: var(--border-width) solid #e0e0e0;
}

article:last-child {
    border-bottom: none;
}

article .meta {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.reading-time {
    font-style: italic;
}

/* TEXT BROWSER FALLBACK: Add "Time: " prefix for reading time */
.reading-time::before {
    content: "Time: ";
}

/* Hide the prefix when CSS transforms are supported (modern browsers) */
@supports (transform: translateX(0)) {
    .reading-time::before {
        content: "⏱ ";
    }
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.tags a {
    background-color: var(--dropdown-bg);
    color: var(--text-color);
    padding: 2px 8px;
    font-size: 0.75rem;
    border: var(--border-width) solid var(--border-color);
    text-decoration: none;
    transition: all var(--transition);
}

.tags a:hover {
    background-color: var(--menu-highlight);
    color: var(--menu-text);
}

.tags a:focus {
    outline: 2px solid var(--menu-highlight);
    outline-offset: 2px;
    background-color: var(--menu-highlight);
    color: var(--menu-text);
}

.tags-list {
    list-style-type: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tags-list a {
    transition: all var(--transition);
}

.tags-list a:hover {
    background-color: var(--menu-highlight);
    color: var(--menu-text);
}

.tags-list a:focus {
    outline: 2px solid var(--menu-highlight);
    outline-offset: 2px;
}

.tag-count {
    color: #666;
    font-size: 0.85em;
    margin-left: 5px;
}

/* Code formatting */
code {
    font-family: var(--font-mono);
    background-color: #eaeaea;
    padding: 2px 4px;
    font-size: 0.9em;
    border: var(--border-width) solid #a0a0a0;
}

pre {
    background-color: #eaeaea;
    padding: 10px;
    overflow-x: auto;
    font-size: 0.9em;
    border: var(--border-width) solid #a0a0a0;
}

pre code {
    background-color: transparent;
    padding: 0;
    border: none;
}

img {
    max-width: 100%;
    height: auto;
    border: var(--border-width) solid var(--border-color);
}

/* Footer styled like GEM status bar */
footer {
    background-color: var(--dropdown-bg);
    color: var(--text-color);
    padding: 3px 10px;
    font-size: 0.9rem;
    text-align: center;
    border-top: var(--border-width) solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

footer a {
    color: var(--link-color);
    transition: color var(--transition);
}

footer a:hover {
    color: var(--menu-highlight);
}

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

/* GEM style scrollbar (simulated with CSS) */
.gem-scrollbar {
    width: 15px;
    background-color: var(--dropdown-bg);
    border-left: var(--border-width) solid var(--border-color);
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
}

.gem-scrollbar-thumb {
    width: 13px;
    height: 40px;
    background-color: var(--dropdown-bg);
    border: var(--border-width) solid var(--border-color);
    margin: 1px;
}

/* GEM-style resize handle */
.gem-resize {
    width: 15px;
    height: 15px;
    background-color: var(--dropdown-bg);
    border-top: var(--border-width) solid var(--border-color);
    border-left: var(--border-width) solid var(--border-color);
    position: absolute;
    bottom: 0;
    right: 0;
    cursor: se-resize;
}

/* Pagination in GEM style */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
    gap: 5px;
}

.pagination a {
    background-color: var(--dropdown-bg);
    color: var(--text-color);
    padding: 3px 10px;
    text-decoration: none;
    border: var(--border-width) solid var(--border-color);
    font-size: 0.9rem;
    transition: all var(--transition);
}

.pagination a:hover {
    background-color: var(--menu-highlight);
    color: var(--menu-text);
}

.pagination a:focus {
    outline: 2px solid var(--menu-highlight);
    outline-offset: 2px;
    background-color: var(--menu-highlight);
    color: var(--menu-text);
}

.pagination .page-info {
    margin: 0 10px;
    font-size: 0.9rem;
}

/* Media query for responsive design */
@media (max-width: 768px) {
    .container {
        margin: 10px;
        width: auto;
        max-width: none;
    }
    
    nav {
        flex-direction: column;
        width: 90%;
    }
    
    nav a {
        border-right: none;
        border-bottom: var(--border-width) solid var(--border-color);
        padding: 8px 12px;
        text-align: center;
    }
    
    nav a:last-child {
        border-bottom: none;
    }
    
    article {
        padding: 15px;
    }
    
    .featured-image,
    .index-image,
    .tag-image,
    .archive-image {
        margin: 10px auto;
    }
    
    footer {
        flex-direction: column;
        gap: 10px;
        text-align: center;
        align-items: center;
    }
    
    .pagination {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    
    main {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
        font-size: 13px;
    }
    
    .container {
        margin: 5px;
    }
    
    header {
        padding: 2px 8px 10px 8px;
    }
    
    h1 {
        font-size: 1.4rem;
    }
    
    h2 {
        font-size: 1.2rem;
    }
    
    .posts-list h2,
    h3 {
        font-size: 1.1rem;
    }
    
    .featured-image::before,
    .index-image::before,
    .tag-image::before,
    .archive-image::before {
        font-size: 0.8rem;
    }
    
    article .meta {
        flex-direction: column;
        gap: 5px;
    }
    
    .site-title {
        font-size: 1rem;
    }
    
    article h1 {
        font-size: 1.2rem;
        line-height: 1.3;
    }
}

.site-title {
    font-size: 1rem;
    margin: 0;
    font-weight: bold;
    color: var(--title-text);
    /* GEM-style gradient */
    background: linear-gradient(to bottom, var(--title-gradient-start) 0%, var(--title-gradient-end) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.3);
}

/* TEXT BROWSER FALLBACK: Provide solid color when gradient text isn't supported */
@supports not (background-clip: text) {
    .site-title {
        color: var(--title-text);
        background: none;
    }
    
    .site-title a {
        color: var(--title-text);
        background: none;
    }
    
    .site-title a:hover {
        color: var(--title-gradient-end);
        background: none;
    }
}

.site-title a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition);
}

.site-title a:hover {
    background: linear-gradient(to bottom, var(--title-gradient-end) 0%, var(--title-gradient-start) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.site-title a:focus {
    outline: 2px solid var(--title-text);
    outline-offset: 2px;
}

/* Featured image styles for GEM */
.featured-image {
    display: block;
    margin: 20px auto;
    border: var(--border-width) solid var(--border-color);
    padding: 10px;
    background-color: var(--dropdown-bg);
    position: relative;
}

.featured-image::before {
    content: "*** FEATURED IMAGE ***";
    display: block;
    text-align: center;
    margin-bottom: 10px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-color);
    background-color: var(--window-bg);
    padding: 2px;
    border: var(--border-width) solid var(--border-color);
}

.featured-image img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    border: var(--border-width) solid var(--border-color);
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}

.featured-image .image-caption {
    text-align: center;
    margin-top: 10px;
    font-size: 0.9rem;
    font-style: italic;
}

.index-image {
    display: block;
    margin: 20px auto;
    border: var(--border-width) solid var(--border-color);
    padding: 10px;
    background-color: var(--dropdown-bg);
    position: relative;
}

.index-image::before {
    content: "*** INDEX IMAGE ***";
    display: block;
    text-align: center;
    margin-bottom: 10px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-color);
    background-color: var(--window-bg);
    padding: 2px;
    border: var(--border-width) solid var(--border-color);
}

.index-image img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    border: var(--border-width) solid var(--border-color);
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}

.tag-image {
    display: block;
    margin: 20px auto;
    border: var(--border-width) solid var(--border-color);
    padding: 10px;
    background-color: var(--dropdown-bg);
    position: relative;
}

.tag-image::before {
    content: "*** TAG IMAGE ***";
    display: block;
    text-align: center;
    margin-bottom: 10px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-color);
    background-color: var(--window-bg);
    padding: 2px;
    border: var(--border-width) solid var(--border-color);
}

.tag-image img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    border: var(--border-width) solid var(--border-color);
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}

.archive-image {
    display: block;
    margin: 20px auto;
    border: var(--border-width) solid var(--border-color);
    padding: 10px;
    background-color: var(--dropdown-bg);
    position: relative;
}

.archive-image::before {
    content: "*** ARCHIVE IMAGE ***";
    display: block;
    text-align: center;
    margin-bottom: 10px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-color);
    background-color: var(--window-bg);
    padding: 2px;
    border: var(--border-width) solid var(--border-color);
}

.archive-image img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    border: var(--border-width) solid var(--border-color);
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}