/*
 * Terminal Editorial Theme
 * A warm, personable tech blog aesthetic
 */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Crimson+Pro:ital,wght@0,400;0,500;0,600;1,400&display=swap');

:root {
    /* Warm dark palette */
    --bg-primary: #0d0f0e;
    --bg-secondary: #151918;
    --bg-elevated: #1a1f1d;
    --bg-card: #1e2422;

    /* Text colors */
    --text-primary: #e8e4df;
    --text-secondary: #9a958e;
    --text-muted: #5c5955;

    /* Accent - warm amber/copper */
    --accent: #e09f5c;
    --accent-dim: #b07d48;
    --accent-glow: rgba(224, 159, 92, 0.15);
    --accent-bright: #f4b76e;

    /* Terminal green for code */
    --code-green: #7ec699;
    --code-bg: #0a0c0b;

    /* Borders and lines */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-accent: rgba(224, 159, 92, 0.3);

    /* Typography */
    --font-display: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --font-body: 'Crimson Pro', 'Georgia', 'Times New Roman', serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --max-width: 720px;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
}

/* Light mode override */
@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #faf8f5;
        --bg-secondary: #f0ede8;
        --bg-elevated: #ffffff;
        --bg-card: #ffffff;

        --text-primary: #1a1918;
        --text-secondary: #5c5955;
        --text-muted: #9a958e;

        --accent: #c4793a;
        --accent-dim: #a06430;
        --accent-glow: rgba(196, 121, 58, 0.1);
        --accent-bright: #d98b4a;

        --code-green: #2d7a4d;
        --code-bg: #f5f2ed;

        --border-subtle: rgba(0, 0, 0, 0.08);
        --border-accent: rgba(196, 121, 58, 0.3);
    }
}

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

/* Base */
html {
    scroll-behavior: smooth;
}

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

/* Subtle grain texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.03;
    z-index: 1000;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Selection */
::selection {
    background: var(--accent);
    color: var(--bg-primary);
}

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo with terminal cursor */
.logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    letter-spacing: -0.02em;
}

.logo::after {
    content: '_';
    color: var(--accent);
    animation: blink 1s step-end infinite;
}

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

.logo:hover {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav-links a {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-decoration: none;
    letter-spacing: 0.02em;
    position: relative;
    padding: var(--space-xs) 0;
}

.nav-links a::before {
    content: '>';
    position: absolute;
    left: -1rem;
    opacity: 0;
    color: var(--accent);
    transform: translateX(-4px);
    transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
    color: var(--text-primary);
}

.nav-links a:hover::before,
.nav-links a[aria-current="page"]::before {
    opacity: 1;
    transform: translateX(0);
}

/* Main content */
main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    min-height: calc(100vh - 200px);
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

h1 .accent-dot {
    color: var(--accent);
}

h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

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

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

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

/* Blog section */
.blog-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.section-header h1 {
    margin-bottom: 0;
}

.section-header::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-accent), transparent);
}

/* Post cards */
.post-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: var(--space-lg);
    text-decoration: none;
    color: inherit;
    position: relative;
    transition: all var(--transition-medium);
    overflow: hidden;
}

.post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform var(--transition-medium);
}

.post-card:hover {
    border-color: var(--border-accent);
    transform: translateX(4px);
    box-shadow: -4px 0 20px var(--accent-glow);
}

.post-card:hover::before {
    transform: scaleY(1);
}

.post-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.post-card:hover .post-title {
    color: var(--accent);
}

.post-meta {
    font-family: var(--font-display);
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.post-meta time {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.post-meta time::before {
    content: '//';
    color: var(--accent-dim);
}

/* Tags */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.tag {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 400;
    padding: 0.2rem 0.6rem;
    background: var(--accent-glow);
    color: var(--accent);
    border-radius: 4px;
    border: 1px solid var(--border-accent);
    letter-spacing: 0.02em;
}

.post-excerpt {
    color: var(--text-secondary);
    margin-top: var(--space-md);
    font-size: 1.0625rem;
    line-height: 1.65;
}

/* Post content */
.post-content {
    background: transparent;
}

.post-content h1 {
    margin-bottom: var(--space-sm);
}

.post-content > .post-meta {
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--space-xl);
}

.post-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.post-content h2 {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-subtle);
}

.post-content h3 {
    font-size: 1.25rem;
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-lg);
}

.post-content li {
    margin-bottom: var(--space-sm);
    line-height: 1.7;
}

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

/* Inline code */
.post-content code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--code-bg);
    color: var(--code-green);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    border: 1px solid var(--border-subtle);
}

/* Code blocks */
.post-content pre {
    background: var(--code-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: var(--space-lg);
    overflow-x: auto;
    margin-bottom: var(--space-lg);
    position: relative;
}

.post-content pre::before {
    content: '>';
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    opacity: 0.5;
}

.post-content pre code {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Blockquotes */
.post-content blockquote {
    border-left: 3px solid var(--accent);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    background: var(--accent-glow);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-secondary);
}

.post-content blockquote p:last-child {
    margin-bottom: 0;
}

/* Post footer */
.post-footer {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-subtle);
}

.back-link {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    transition: all var(--transition-fast);
}

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

/* About section */
.about-section {
    margin-bottom: var(--space-xl);
}

.about-section h1 {
    display: inline-block;
    position: relative;
}

.about-section h1::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    border-radius: 2px;
}

.about-text {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    position: relative;
}

.about-text::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: var(--space-md);
    font-family: var(--font-body);
    font-size: 4rem;
    color: var(--accent);
    opacity: 0.3;
    line-height: 1;
}

.about-text p {
    font-size: 1.125rem;
    line-height: 1.8;
}

.about-text p + p {
    margin-top: var(--space-md);
}

/* Social links */
.social-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.social-link {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 400;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-medium);
    letter-spacing: 0.01em;
}

.social-link::before {
    content: '~';
    color: var(--accent);
    transition: transform var(--transition-fast);
}

.social-link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.social-link:hover::before {
    transform: translateX(-2px);
    color: var(--bg-primary);
}

/* GitHub activity */
.github-activity {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
}

.github-activity h2 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.github-activity h2::before {
    content: '$';
    color: var(--accent);
    font-weight: 400;
}

.github-calendar img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    opacity: 0.9;
    filter: saturate(0.8);
    transition: all var(--transition-medium);
}

.github-calendar img:hover {
    opacity: 1;
    filter: saturate(1);
}

/* Footer */
footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    color: var(--text-muted);
    font-family: var(--font-display);
    font-size: 0.8125rem;
    border-top: 1px solid var(--border-subtle);
}

footer p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

footer p::before {
    content: '/*';
    color: var(--accent-dim);
}

footer p::after {
    content: '*/';
    color: var(--accent-dim);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--text-muted);
    font-family: var(--font-display);
    font-size: 0.9375rem;
}

.empty-state::before {
    content: '// ';
    color: var(--accent);
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Responsive */
@media (max-width: 640px) {
    :root {
        --space-lg: 1.5rem;
        --space-xl: 2.5rem;
    }

    body {
        font-size: 1rem;
    }

    nav {
        padding: var(--space-md);
    }

    .logo {
        font-size: 1.125rem;
    }

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

    .nav-links a::before {
        display: none;
    }

    h1 {
        font-size: 1.875rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    main {
        padding: var(--space-lg) var(--space-md);
    }

    .post-card {
        padding: var(--space-md);
    }

    .post-title {
        font-size: 1.125rem;
    }

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

    .social-link {
        justify-content: center;
    }

    .about-text::before {
        font-size: 3rem;
        top: -8px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}