:root {
    --bg: #0b0f17;
    --bg-elevated: #111827;
    --bg-card: #161f30;
    --border: #1e293b;
    --border-accent: #334155;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --heading: #f8fafc;
    --accent: #38bdf8;
    --accent-hover: #7dd3fc;
    --accent-secondary: #a855f7;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --code-bg: #090d16;
    --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #f8fafc;
        --bg-elevated: #ffffff;
        --bg-card: #ffffff;
        --border: #e2e8f0;
        --border-accent: #cbd5e1;
        --text: #1e293b;
        --text-muted: #64748b;
        --heading: #0f172a;
        --accent: #0284c7;
        --accent-hover: #0369a1;
        --accent-secondary: #7e22ce;
        --code-bg: #0f172a;
    }
}

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

html {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text);
    font-size: clamp(96%, 46% + 0.45vw, 126%);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.container {
    width: min(92vw, 90rem);
    margin-inline: auto;
    padding-inline: clamp(1rem, 2.5vw, 2.5rem);
}

/* Header & Navigation */
.site-header {
    border-bottom: 1px solid var(--border);
    background: var(--bg-elevated);
    position: sticky;
    top: 0;
    z-index: 20;
}

.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 4rem;
    padding: 0.5rem 0;
    flex-wrap: wrap;
    gap: 1rem;
}

.brand {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--heading);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.brand:hover {
    text-decoration: none;
    color: var(--accent);
}

.brand-dot {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    display: inline-block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.4rem;
    font-size: 1rem;
    font-weight: 500;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-muted);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--heading);
    text-decoration: none;
}

.nav-badge {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    border: 1px solid var(--border-accent);
    color: var(--accent);
    background: rgba(56, 189, 248, 0.08);
}

/* Hero Section */
.hero {
    padding: 3.5rem 0 2.75rem;
    border-bottom: 1px solid var(--border);
}

.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 0.75rem;
    display: inline-block;
}

.hero h1 {
    font-size: clamp(1.85rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--heading);
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.hero-lead {
    font-size: 1.12rem;
    color: var(--text-muted);
    max-width: 88ch;
    margin-bottom: 1.5rem;
}

.hero-pillars {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.pillar-pill {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: 0.35rem 0.75rem;
    border-radius: 0.375rem;
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
    color: var(--text);
}

/* Sections */
.section-block {
    padding: 2.75rem 0;
}

.section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.section-title {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--heading);
    letter-spacing: -0.02em;
}

.section-link {
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

/* Project Cards Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 21rem), 1fr));
    gap: clamp(1.1rem, 1.6vw, 1.8rem);
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.625rem;
    padding: 1.4rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
    border-color: var(--accent);
    transform: translateY(-0.125rem);
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.65rem;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    color: var(--text-muted);
}

.status-badge {
    padding: 0.15rem 0.5rem;
    border-radius: 0.25rem;
    background: rgba(52, 211, 153, 0.12);
    color: var(--success);
    border: 1px solid rgba(52, 211, 153, 0.3);
    font-weight: 600;
}

.card h3 {
    font-size: 1.25rem;
    line-height: 1.35;
    margin-bottom: 0.65rem;
    color: var(--heading);
}

.card h3 a {
    color: inherit;
}

.card h3 a:hover {
    color: var(--accent);
    text-decoration: none;
}

.card-summary {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 1.1rem;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    padding: 0.18rem 0.5rem;
    border-radius: 0.25rem;
    background: rgba(148, 163, 184, 0.1);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.tag:hover {
    color: var(--accent);
    border-color: var(--accent);
    text-decoration: none;
}

/* Blog Post List */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.post-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.625rem;
    padding: 1.35rem 1.5rem;
    transition: border-color 0.15s ease;
}

.post-item:hover {
    border-color: var(--border-accent);
}

.post-meta {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-bottom: 0.4rem;
}

.post-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.45rem;
    color: var(--heading);
}

.post-title a {
    color: inherit;
}

.post-title a:hover {
    color: var(--accent);
    text-decoration: none;
}

/* Article / Page View */
.article-container {
    width: min(90vw, 68rem);
    margin-inline: auto;
    padding-block: clamp(2rem, 4vh, 4rem);
}

.article-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

.article-header h1 {
    font-size: clamp(1.75rem, 3.5vw, 2.4rem);
    font-weight: 800;
    color: var(--heading);
    line-height: 1.25;
    letter-spacing: -0.025em;
    margin: 0.5rem 0 1rem;
}

.article-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
}

.btn-repo {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: 0.4rem 0.85rem;
    border-radius: 0.375rem;
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid var(--accent);
    color: var(--accent);
    font-weight: 600;
}

.btn-repo:hover {
    background: rgba(56, 189, 248, 0.22);
    text-decoration: none;
}

/* Prose Content */
.prose h2 {
    font-size: clamp(1.45rem, 1.2rem + 0.6vw, 1.85rem);
    color: var(--heading);
    margin: 2.2rem 0 0.85rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid var(--border);
}

.prose h3 {
    font-size: clamp(1.2rem, 1.05rem + 0.4vw, 1.45rem);
    color: var(--heading);
    margin: 1.75rem 0 0.65rem;
}

.prose p {
    font-size: 1.05rem;
    margin-bottom: 1.25rem;
}

.prose ul, .prose ol {
    margin: 0 0 1.25rem 1.5rem;
}

.prose li {
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
}

.prose code {
    font-family: var(--font-mono);
    font-size: 0.92em;
    background: rgba(148, 163, 184, 0.14);
    padding: 0.15rem 0.38rem;
    border-radius: 0.25rem;
}

.prose pre {
    background: var(--code-bg) !important;
    border: 1px solid var(--border-accent);
    border-radius: 0.5rem;
    padding: 1.1rem 1.25rem;
    overflow-x: auto;
    margin: 1.35rem 0;
    line-height: 1.55;
}

.prose pre code {
    background: transparent;
    padding: 0;
    font-size: 0.92rem;
    color: #e2e8f0;
}

/* Media Figures (Images, Video, Audio, SVGs break out to full container width) */
.media-figure {
    width: min(90vw, 72rem);
    margin: 2.25rem auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.625rem;
    overflow: hidden;
    padding: 0.5rem;
}

.media-figure img, .media-figure video {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 0.375rem;
    margin: 0 auto;
}

.media-figure audio {
    width: 100%;
    margin: 0.5rem 0;
}

.media-figure figcaption {
    font-size: 0.94rem;
    color: var(--text-muted);
    text-align: center;
    padding: 0.65rem 0.5rem 0.25rem;
    font-family: var(--font-mono);
}

.video-embed {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 0.625rem;
    border: 1px solid var(--border);
    margin: 1.75rem 0;
}

.video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* Obsidian Callouts */
.callout {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    border-radius: 0.5rem;
    border-left: 0.25rem solid var(--accent);
    background: var(--bg-card);
}

.callout-title {
    font-weight: 700;
    font-size: 1.02rem;
    color: var(--heading);
    margin-bottom: 0.35rem;
    font-family: var(--font-mono);
}

.callout-body p:last-child {
    margin-bottom: 0;
}

.callout-tip {
    border-left-color: var(--success);
}

.callout-important {
    border-left-color: var(--accent-secondary);
}

.callout-warning, .callout-caution {
    border-left-color: var(--warning);
}

/* Footer */
.site-footer {
    margin-top: auto;
    border-top: 1px solid var(--border);
    background: var(--bg-elevated);
    padding: 2rem 0;
    font-size: 0.94rem;
    color: var(--text-muted);
}

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

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

/* Inline Vector SVG Diagrams & Zero-JS Mermaid Flowcharts */
.svg-figure .svg-inline-wrap {
    width: 100%;
    overflow-x: auto;
    border-radius: 0.75rem;
    border: 1px solid rgba(148, 163, 184, 0.16);
    background: #0b0f17;
}
.svg-figure .svg-inline-wrap svg {
    display: block;
    width: 100%;
    height: auto;
}
.flow-diagram {
    margin: 1.75rem 0;
    padding: 1.1rem;
    border-radius: 0.75rem;
    background: #0b0f17;
    border: 1px solid rgba(56, 189, 248, 0.25);
}
.flow-track {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
}
.flow-step {
    flex: 1 1 11rem;
    background: #111827;
    border: 1px solid rgba(168, 85, 247, 0.4);
    border-radius: 0.625rem;
    padding: 0.75rem 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.flow-step strong {
    color: #38bdf8;
    font-size: 0.88rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
.flow-step span {
    color: #cbd5e1;
    font-size: 0.88rem;
}
.flow-arrow {
    color: #38bdf8;
    display: flex;
    align-items: center;
    justify-content: center;
}
@media (max-width: 48rem) {
    .flow-track {
        flex-direction: column;
        align-items: stretch;
    }
    .flow-arrow svg {
        transform: rotate(90deg);
    }
}