/*
 * ╔═══════════════════════════════════════════════════════════════════╗
 * ║ XU81.COM - CYBERPUNK TERMINAL THEME v1.0                         ║
 * ║ Geek | Terminal | Sci-fi | MUD | Game                            ║
 * ╚═══════════════════════════════════════════════════════════════════╝
 */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300;400;500;600;700&family=Source+Code+Pro:wght@300;400;600;700&display=swap');

/* ============================================
   CSS VARIABLES - THEME SYSTEM
   ============================================ */

/* Matrix Green Theme (Default Dark) */
:root {
    --font-mono: 'Fira Code', 'Source Code Pro', 'Courier New', monospace;
    --font-sans: 'Source Code Pro', 'Fira Code', system-ui, sans-serif;

    /* Matrix Green Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #001100;
    --text-primary: #00ff41;
    --text-secondary: #008f11;
    --accent: #00ff41;
    --accent-hover: #00ff41;
    --border: #003b00;
    --shadow: #00ff41;
    --glow: 0 0 10px #00ff41, 0 0 20px #00ff41, 0 0 30px #00ff41;
    --scanline-color: rgba(0, 255, 65, 0.03);

    /* Animation timings */
    --cursor-blink: 1s;
    --glow-pulse: 2s;
    --scan-speed: 8s;
}

/* Cyberpunk Theme */
[data-theme="cyberpunk"] {
    --bg-primary: #0a0a0f;
    --bg-secondary: #1a1a2e;
    --text-primary: #00f3ff;
    --text-secondary: #bc13fe;
    --accent: #00f3ff;
    --accent-hover: #bc13fe;
    --border: #2d2d44;
    --shadow: #00f3ff;
    --glow: 0 0 10px #00f3ff, 0 0 20px #bc13fe;
    --scanline-color: rgba(0, 243, 255, 0.05);
}

/* Amber Terminal Theme */
[data-theme="amber"] {
    --bg-primary: #0a0500;
    --bg-secondary: #1a0f00;
    --text-primary: #ffb000;
    --text-secondary: #ff8c00;
    --accent: #ffb000;
    --accent-hover: #ff6600;
    --border: #331a00;
    --shadow: #ffb000;
    --glow: 0 0 10px #ffb000, 0 0 20px #ff6600;
    --scanline-color: rgba(255, 176, 0, 0.05);
}

/* Light Theme (Fallback) */
[data-theme="light"] {
    --bg-primary: #f0f0f0;
    --bg-secondary: #e0e0e0;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --accent: #0066cc;
    --accent-hover: #004499;
    --border: #ccc;
    --shadow: rgba(0, 0, 0, 0.2);
    --glow: none;
    --scanline-color: rgba(0, 0, 0, 0.02);
}

/* ============================================
   BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-mono);
    line-height: 1.8;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s, color 0.3s;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* ============================================
   CRT MONITOR EFFECTS
   ============================================ */

/* Scanlines Overlay */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        var(--scanline-color),
        var(--scanline-color) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 9999;
    animation: scanlines var(--scan-speed) linear infinite;
}

/* CRT Flicker Effect */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    pointer-events: none;
    z-index: 9998;
    animation: flicker 0.15s infinite;
}

@keyframes scanlines {
    0% { transform: translateY(0); }
    100% { transform: translateY(10px); }
}

@keyframes flicker {
    0% { opacity: 0.97; }
    50% { opacity: 1; }
    100% { opacity: 0.98; }
}

/* ============================================
   MATRIX RAIN BACKGROUND
   ============================================ */

#matrix-rain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
}

/* ============================================
   ASCII ART DECORATIONS
   ============================================ */

.ascii-border-top {
    white-space: pre;
    font-size: 10px;
    line-height: 1;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 1rem;
    opacity: 0.6;
}

.ascii-border-bottom {
    white-space: pre;
    font-size: 10px;
    line-height: 1;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 1rem;
    opacity: 0.6;
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* ============================================
   HEADER
   ============================================ */

.site-header {
    padding: 2rem 0;
    border-bottom: 2px solid var(--border);
    margin-bottom: 2rem;
    position: relative;
}

/* Glowing border effect */
.site-header::before {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    animation: glow-pulse var(--glow-pulse) ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.site-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.site-brand {
    position: relative;
}

.terminal-logo {
    margin-bottom: 1.5rem;
    text-align: center;
    border: 1px solid var(--border);
    padding: 1rem;
    background: var(--bg-secondary);
    position: relative;
}

.terminal-logo::before {
    content: "[ XU81 TERMINAL v1.0 ]";
    position: absolute;
    top: -0.6rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    padding: 0 0.5rem;
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.logo-line {
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    text-align: left;
}

.logo-line .prompt {
    color: var(--accent);
    text-shadow: var(--glow);
}

.logo-line .cmd {
    color: var(--text-primary);
}

.logo-line .file {
    color: var(--text-secondary);
}

.ascii-logo {
    font-size: 6px;
    line-height: 1.1;
    white-space: pre;
    color: var(--accent);
    text-shadow: var(--glow);
    animation: logo-glow 2s ease-in-out infinite;
    margin-bottom: 1rem;
    text-align: center;
    overflow-x: auto;
}

.logo-art {
    font-size: 6px;
    line-height: 1.1;
    margin: 0;
    padding: 0;
    display: inline-block;
    color: var(--accent);
    text-shadow: var(--glow);
}

@keyframes logo-glow {
    0%, 100% { text-shadow: var(--glow); }
    50% { text-shadow: 0 0 20px var(--accent), 0 0 30px var(--accent), 0 0 40px var(--accent); }
}

.site-brand a {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
    text-shadow: 0 0 5px var(--accent);
    letter-spacing: 2px;
}

.site-brand a:hover {
    color: var(--accent);
    text-shadow: var(--glow);
}

.nav-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    position: relative;
    padding: 0.5rem 0;
    font-size: 0.95rem;
    letter-spacing: 1px;
}

/* Blinking cursor effect on hover */
.nav-link::after {
    content: "_";
    animation: blink var(--cursor-blink) step-end infinite;
    opacity: 0;
}

.nav-link:hover::after {
    opacity: 1;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.nav-link:hover {
    color: var(--accent);
    text-shadow: 0 0 10px var(--accent);
}

.site-subtitle {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
    opacity: 0.8;
}

/* ============================================
   THEME SELECTOR
   ============================================ */

.theme-selector {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.theme-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.theme-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    text-shadow: 0 0 5px var(--accent);
    box-shadow: inset 0 0 10px rgba(0, 255, 65, 0.1);
}

.theme-btn.active {
    color: var(--bg-primary);
    background: var(--accent);
    border-color: var(--accent);
    text-shadow: none;
    box-shadow: var(--glow);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main {
    min-height: 60vh;
}

/* ============================================
   POSTS
   ============================================ */

.posts {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.post-summary,
.post {
    padding: 2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    position: relative;
    transition: all 0.3s;
}

/* Cyberpunk corner decorations */
.post-summary::before,
.post::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 20px;
    height: 20px;
    border-top: 2px solid var(--accent);
    border-left: 2px solid var(--accent);
}

.post-summary::after,
.post::after {
    content: "";
    position: absolute;
    bottom: 0;
    right: 0;
    width: 20px;
    height: 20px;
    border-bottom: 2px solid var(--accent);
    border-right: 2px solid var(--accent);
}

.post-summary:hover,
.post:hover {
    border-color: var(--accent);
    box-shadow: var(--glow);
    transform: translateX(5px);
}

.post-title {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.post-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
}

.post-title a:hover {
    color: var(--accent);
    text-shadow: var(--glow);
}

.post-meta {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 1rem;
    font-family: var(--font-mono);
}

.post-meta::before {
    content: "[";
    color: var(--accent);
}

.post-meta::after {
    content: "]";
    color: var(--accent);
}

.post-summary-content {
    color: var(--text-primary);
    margin-bottom: 1rem;
    opacity: 0.9;
}

.read-more {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.read-more:hover {
    text-shadow: var(--glow);
    letter-spacing: 3px;
}

.read-more::after {
    content: " >>";
}

.post-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.tag,
.category {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.75rem;
    background: transparent;
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border);
    transition: all 0.3s;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.tag:hover,
.category:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-shadow: 0 0 5px var(--accent);
    box-shadow: var(--glow);
}

.tag::before {
    content: "#";
}

/* ============================================
   SINGLE POST
   ============================================ */

.post-single {
    padding: 2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    position: relative;
}

.post-header {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.post-categories {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.post-content {
    line-height: 1.8;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--accent);
    font-weight: 600;
    letter-spacing: 1px;
    text-shadow: 0 0 5px var(--accent);
}

.post-content h1 {
    font-size: 1.8rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

.post-content h1::before {
    content: "# ";
    opacity: 0.5;
}

.post-content h2 {
    font-size: 1.5rem;
}

.post-content h2::before {
    content: "## ";
    opacity: 0.5;
}

.post-content h3 {
    font-size: 1.3rem;
}

.post-content h3::before {
    content: "### ";
    opacity: 0.5;
}

.post-content p {
    margin-bottom: 1rem;
}

.post-content a {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s;
    border-bottom: 1px dotted var(--accent);
}

.post-content a:hover {
    text-shadow: var(--glow);
    border-bottom-style: solid;
}

.post-content ul,
.post-content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.post-content li {
    margin-bottom: 0.5rem;
}

.post-content ul li::marker {
    color: var(--accent);
}

.post-content ol li::marker {
    color: var(--accent);
    font-weight: bold;
}

.post-content code {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border: 1px solid var(--border);
    color: var(--accent);
}

.post-content pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 1.5rem;
    border: 1px solid var(--border);
    overflow-x: auto;
    margin-bottom: 1.5rem;
    position: relative;
}

/* Terminal window decoration */
.post-content pre::before {
    content: "root@xu81:~# ./code.sh";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background: var(--border);
    color: var(--text-secondary);
    padding: 0.3rem 1rem;
    font-size: 0.7rem;
    font-family: var(--font-mono);
}

.post-content pre code {
    background: transparent;
    padding: 0;
    border: none;
    margin-top: 1rem;
    display: block;
}

.post-content blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
    margin-left: 0;
    color: var(--text-secondary);
    font-style: italic;
    background: rgba(0, 0, 0, 0.2);
    padding: 1rem;
}

.post-content blockquote::before {
    content: "> ";
    color: var(--accent);
    font-weight: bold;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border);
    margin: 1rem 0;
    box-shadow: var(--glow);
}

.post-footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.tags-label {
    font-weight: 600;
    margin-right: 0.5rem;
    color: var(--accent);
}

/* ============================================
   PAGE HEADER
   ============================================ */

.page-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--accent);
    text-shadow: var(--glow);
    letter-spacing: 2px;
}

.page-header h1::before {
    content: "> ";
}

.description {
    color: var(--text-secondary);
    font-style: italic;
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.pagination-prev,
.pagination-next {
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--border);
    transition: all 0.3s;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pagination-prev:hover,
.pagination-next:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-shadow: var(--glow);
    box-shadow: var(--glow);
}

.pagination-prev.disabled,
.pagination-next.disabled {
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.3;
}

.pagination-info {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.pagination-info::before {
    content: "[PAGE ";
}

.pagination-info::after {
    content: "]";
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
    margin-top: 4rem;
    padding: 3rem 0;
    border-top: 2px solid var(--border);
    position: relative;
}

/* Glowing footer border */
.site-footer::before {
    content: "";
    position: absolute;
    top: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    animation: glow-pulse var(--glow-pulse) ease-in-out infinite;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
    text-align: center;
}

.ascii-footer {
    font-size: 10px;
    line-height: 1.2;
    white-space: pre;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    opacity: 0.5;
}

.footer-content p {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.footer-links a:hover {
    color: var(--accent);
    text-shadow: 0 0 5px var(--accent);
}

.footer-links a::before {
    content: "[";
    opacity: 0.5;
}

.footer-links a::after {
    content: "]";
    opacity: 0.5;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-secondary);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
}

.social-links a:hover {
    color: var(--accent);
    border-color: var(--accent);
    text-shadow: var(--glow);
    box-shadow: var(--glow);
    transform: translateY(-3px);
}

/* ============================================
   DRAFT BADGE
   ============================================ */

.draft {
    color: #ff3366;
    font-style: italic;
    animation: blink 1s step-end infinite;
}

/* ============================================
   COMMENTS
   ============================================ */

.comments {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .site-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .nav-links {
        flex-wrap: wrap;
        gap: 1rem;
        font-size: 0.85rem;
    }

    .theme-selector {
        align-self: flex-end;
    }

    .post-single,
    .post-summary,
    .post {
        padding: 1.5rem;
    }

    .post-title {
        font-size: 1.2rem;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }

    .pagination {
        flex-direction: column;
        gap: 1rem;
    }

    .pagination-info {
        order: -1;
    }

    .ascii-logo {
        font-size: 10px;
    }
}

@media (max-width: 480px) {
    .site-brand a {
        font-size: 1.1rem;
    }

    .post-summary,
    .post,
    .post-single {
        padding: 1rem;
    }

    .post-content {
        font-size: 0.9rem;
    }

    .ascii-logo {
        font-size: 8px;
    }

    .footer-links {
        gap: 1rem;
    }

    .footer-links a {
        font-size: 0.75rem;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.pixel-corners {
    clip-path: polygon(
        0px 4px, 4px 4px, 4px 0px,
        calc(100% - 4px) 0px, calc(100% - 4px) 4px, 100% 4px,
        100% calc(100% - 4px), calc(100% - 4px) calc(100% - 4px), calc(100% - 4px) 100%,
        4px 100%, 4px calc(100% - 4px), 0px calc(100% - 4px)
    );
}

.terminal-text {
    font-family: var(--font-mono);
}

.neon-text {
    text-shadow: var(--glow);
}

/*
 * ╔═══════════════════════════════════════════════════════════════════╗
 * ║ END OF STYLESHEET - SYSTEM READY                                  ║
 * ╚═══════════════════════════════════════════════════════════════════╝
 */