/* Import Charter Font (fallback to Georgia) */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Cross-document view transitions: subtle 220ms cross-fade between pages
 * in browsers that support the View Transitions API (Chromium, Safari).
 * Other browsers fall back to instant navigation. */
@view-transition {
    navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
    animation-duration: 220ms;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

::view-transition-old(root) {
    animation-name: vt-fade-out;
}

::view-transition-new(root) {
    animation-name: vt-fade-in;
}

@keyframes vt-fade-out {
    to { opacity: 0; }
}

@keyframes vt-fade-in {
    from { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
    ::view-transition-old(root),
    ::view-transition-new(root) {
        animation-duration: 0.001ms;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes blink {
    0%, 49% {
        opacity: 1;
    }
    50%, 100% {
        opacity: 0;
    }
}

:root {
    --bg-primary: #ffffff;
    --bg-white: #ffffff;
    --text-primary: #0a0a0a;
    --text-secondary: #666666;
    --walter-green: #58a6ff;
    --border-color: #e0e0e0;
    --hover-bg: rgba(107, 140, 255, 0.03);
    --quote-bg: rgba(107, 140, 255, 0.02);
    --nav-bg: rgba(255, 255, 255, 0.98);
    --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
}

/* Dark mode overrides - will be set via JavaScript */
body.dark-mode {
    --bg-primary: #1e1e1e;
    --bg-white: #2a2a2a;
    --text-primary: #c8c8c8;
    --text-secondary: #a0a0a0;
    --walter-green: #61afef;
    --border-color: #3a3a3a;
    --quote-bg: rgba(107, 140, 255, 0.06);
    --nav-bg: rgba(30, 30, 30, 0.98);
    --hover-bg: rgba(107, 140, 255, 0.08);
    background: linear-gradient(to bottom, #0A0A0A 0%, #121212 100%);
    background-attachment: fixed;
}

body.dark-mode::before {
    opacity: 0.02;
}

body.dark-mode #navbar {
    background-color: rgba(30, 30, 30, 0.98);
}

body.dark-mode .nav-logo {
    color: #e8e8e8 !important;
}

body.dark-mode .nav-logo:hover {
    color: #ffffff !important;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
    overflow-x: hidden;
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

body {
    font-family: var(--font-sans);
    font-size: 17px;
    line-height: 1.65;
    color: var(--text-primary);
    background: linear-gradient(to bottom, #f8f7f4 0%, #e9e6e2 100%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    animation: fadeIn 0.8s ease-out;
    transition: background 0.3s ease, color 0.3s ease;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.015'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: -1;
    mix-blend-mode: multiply;
}

body.dark-mode::before {
    opacity: 0.01;
    mix-blend-mode: overlay;
}

::selection {
    background-color: rgba(107, 140, 255, 0.18);
    color: var(--text-primary);
}

*:focus-visible {
    outline: 2px solid rgba(107, 140, 255, 0.55);
    outline-offset: 1px;
    border-radius: 2px;
}

body.dark-mode *:focus-visible {
    outline-color: rgba(107, 140, 255, 0.65);
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
    padding: 0.75rem 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
}

#navbar.scrolled {
    padding: 0.6rem 0;
}

.nav-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-left {
    display: flex;
    align-items: baseline;
    gap: 0.28rem;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.nav-logo {
    font-size: 1.40rem;
    font-weight: 600;
    color: #0a0a0a;
    text-decoration: none;
    transition: color 0.2s ease;
    letter-spacing: -0.02em;
    position: relative;
}

.nav-logo::after {
    content: '\2588';
    margin-left: 4px;
    animation: blink 1.2s step-end infinite;
    font-size: 0.75em;
    transform: scaleX(0.6) translateY(-0.1em);
    display: inline-block;
    color: #000000;
}

body.dark-mode .nav-logo::after {
    color: #ffffff;
}

.nav-logo:hover {
    color: var(--walter-green);
}

.nav-links {
    display: flex;
    gap: 1.1rem;
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
    padding-bottom: 2px;
    font-weight: 600;
    line-height: 1;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--walter-green);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
}

body.dark-mode .nav-links a::after {
    background: var(--walter-green);
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

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

.nav-links a.nav-secondary {
    opacity: 0.72;
    font-weight: 500;
}

.nav-links a.nav-secondary:hover {
    opacity: 0.9;
}

.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--text-primary);
    transition: opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    align-self: baseline;
    position: relative;
    top: 2px;
}

.theme-toggle:hover {
    opacity: 1;
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
    stroke-width: 2.5;
    transition: transform 0.3s ease;
}

.theme-toggle:active svg {
    transform: scale(0.9);
}

/* Hero Section */
.hero {
    padding: 7rem 0 4rem;
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero-greeting {
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0;
    line-height: 1;
    letter-spacing: -0.045em;
    animation: fadeInScale 0.6s ease-out;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.hero-spacer {
    height: 2rem;
}

.hero-intro {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 400;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-content {
    max-width: 42rem;
}

.hero-content > * {
    animation: slideUpFade 0.6s ease-out backwards;
}

.hero-greeting {
    animation-delay: 0.1s;
}

.hero-intro {
    animation-delay: 0.2s;
}

.hero-description {
    animation-delay: 0.3s;
}

.quick-links {
    animation-delay: 0.5s;
}

.hero h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
    line-height: 1.2;
    color: var(--text-primary);
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

/* Buttons */
.quick-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 400;
    text-decoration: none;
    transition: color 0.2s ease;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 2px;
    padding-right: 1.5rem;
    border-right: 1px solid rgba(120, 120, 120, 0.3);
}

.btn:last-child {
    border-right: none;
    padding-right: 0;
}

.btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--walter-green);
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.btn:hover::after {
    transform: scaleX(1);
}

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

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

.btn-secondary {
    color: var(--text-secondary);
}

.btn-secondary:hover {
    color: var(--walter-green);
}

.btn svg {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

/* Sections */
.section {
    padding: 2.5rem 0;
    animation: slideUp 0.6s ease-out;
    scroll-margin-top: 5rem;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-white {
    background-color: var(--bg-white);
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.2;
    position: relative;
    padding-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
}

.section-kicker {
    margin-left: 1rem;
    font-size: 0.75rem;
    font-family: 'IBM Plex Sans', monospace;
    color: var(--text-secondary);
    opacity: 0.5;
    letter-spacing: 0.05em;
    font-weight: 400;
    font-style: italic;
    white-space: nowrap;
    text-transform: none;
}

.contact-section-title {
    margin: 2rem 0 1rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    font-weight: 500;
}

.section-title-kicker {
    font-size: 1.55rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.section-header {
    margin-bottom: 2.5rem;
}

.work-section {
    background-color: var(--bg-primary);
    position: relative;
}

.work-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.view-all-container {
    text-align: right;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    opacity: 0.7;
    font-size: 0.85rem;
}

.btn-view-all {
    display: inline;
    font-family: 'IBM Plex Sans', monospace;
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-decoration: none;
    opacity: 0.7;
    transition: all 0.15s ease;
    position: relative;
}

.btn-view-all::before {
    content: '';
    display: none;
}

.btn-view-all:hover::before {
    display: none;
}

.btn-view-all:hover {
    opacity: 1;
    color: var(--text-primary);
    text-decoration: underline dotted;
    text-decoration-color: var(--text-secondary);
    transform: translateX(2px);
    box-shadow: none;
}

.btn-view-all svg {
    transition: transform 0.3s ease;
}

.btn-view-all:hover svg {
    transform: translateX(4px);
}

/* Achievements */
.achievements-section {
    background-color: var(--bg-primary);
}

.achievement-timeline {
    list-style: none;
    margin: 0;
    padding: 0 0 0 2rem;
    position: relative;
    max-width: 760px;
}

.achievement-timeline::before {
    content: '';
    position: absolute;
    left: 0.55rem;
    top: 0.45rem;
    bottom: 0.45rem;
    width: 1px;
    background: var(--text-secondary);
    opacity: 0.55;
}

.achievement-item {
    display: grid;
    grid-template-columns: 4rem 1fr;
    gap: 1rem;
    position: relative;
    padding: 0 0 2.35rem;
}

.achievement-item:last-child {
    padding-bottom: 0;
}

.achievement-item::before {
    content: '';
    position: absolute;
    left: -1.83rem;
    top: 0.35rem;
    width: 0.75rem;
    height: 0.75rem;
    border: 2px solid var(--text-secondary);
    border-radius: 50%;
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px var(--bg-primary);
}

body.dark-mode .achievement-item::before {
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px var(--bg-primary);
}

.achievement-year {
    color: var(--walter-green);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.6;
    opacity: 0.82;
}

.achievement-copy h3 {
    color: var(--text-primary);
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin: 0 0 0.55rem;
}

.achievement-copy p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.65;
    margin: 0;
}

.achievement-copy p a {
    color: var(--walter-green);
    text-decoration: underline;
    text-decoration-color: rgba(107, 140, 255, 0.4);
    text-underline-offset: 4px;
    transition: all 0.2s ease;
}

body.dark-mode .achievement-copy p a {
    text-decoration-color: rgba(107, 140, 255, 0.4);
}

.achievement-copy p a:hover {
    color: var(--text-primary);
    text-decoration-color: var(--walter-green);
}

/* About Section */
.about-content {
    max-width: 720px;
}

.about-paragraph {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.75;
    font-size: 1.05rem;
}

.about-paragraph strong {
    color: var(--text-primary);
    font-weight: 500;
}

.about-details {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    align-items: flex-start;
}

.detail-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.detail-group-separator {
    width: 1px;
    background-color: var(--border-color);
    align-self: stretch;
}

.detail-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'IBM Plex Sans', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.65rem;
}

.detail-item {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-family: 'IBM Plex Sans', sans-serif;
    line-height: 1.6;
}

/* Projects */
.project-card {
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 0.25rem;
    margin-bottom: 1.75rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
    background-color: rgba(255, 255, 255, 0.4);
    position: relative;
}

body.dark-mode .project-card {
    background-color: rgba(42, 42, 42, 0.4);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: linear-gradient(180deg, var(--walter-green), var(--text-primary));
    transition: height 0.3s ease;
}

.project-card:hover::before {
    height: 100%;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-card:hover {
    border-color: var(--text-primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    gap: 1rem;
}

.project-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.25;
    flex: 1;
    transition: color 0.2s ease;
}

.project-card:hover .project-title {
    color: var(--walter-green);
}

.project-title a,
.project-title a:visited {
    color: inherit;
    text-decoration: none;
}

.project-title a:hover {
    color: var(--walter-green);
}

/* Status pill on project card header — green/blue/yellow/gray by status enum. */
.project-status {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-family: var(--font-mono);
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    white-space: nowrap;
    flex-shrink: 0;
}

.project-status.status-building {
    color: #4ade80;
    border-color: rgba(74, 222, 128, 0.45);
    background: rgba(74, 222, 128, 0.08);
}

.project-status.status-shipped {
    color: var(--walter-green);
    border-color: rgba(97, 175, 239, 0.45);
    background: rgba(97, 175, 239, 0.08);
}

.project-status.status-planning {
    color: #fcd34d;
    border-color: rgba(252, 211, 77, 0.4);
    background: rgba(252, 211, 77, 0.07);
}

.project-status.status-dormant {
    color: var(--text-secondary);
    opacity: 0.7;
}

.project-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 0.85rem;
    flex-wrap: wrap;
}

.project-signal {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
    opacity: 0.75;
    padding: 0.15rem 0.5rem;
    border: 1px dashed var(--border-color);
    border-radius: 3px;
    white-space: nowrap;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.5;
    font-size: 0.9rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: rgba(136, 136, 136, 0.9);
}

.project-tag {
    padding: 0;
    background-color: transparent;
    border: none;
    color: rgba(136, 136, 136, 0.9);
    font-size: 0.85rem;
    font-family: inherit;
    transition: color 0.2s ease;
    position: relative;
    cursor: default;
}

.project-tag:not(:last-child)::after {
    content: '·';
    position: absolute;
    right: -9px;
    color: rgba(68, 68, 68, 0.6);
}

.project-tag:hover {
    color: var(--text-primary);
}

/* GitHub */
.github-section {
    background-color: var(--bg-primary);
}

.github-heatmap {
    display: block;
    color: inherit;
    text-decoration: none;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 0 1.5rem;
}

.github-heatmap-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-end;
    margin-bottom: 1rem;
}

.github-label,
.github-open {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.86rem;
}

.github-heatmap h3 {
    font-size: 1.45rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.25;
    margin: 0.25rem 0 0;
}

.github-open {
    white-space: nowrap;
    transition: color 0.2s ease;
}

.github-heatmap:hover .github-open {
    color: var(--walter-green);
}

.github-heatmap img {
    display: block;
    width: 100%;
    max-width: 760px;
    height: auto;
    min-height: 120px;
    object-fit: contain;
    object-position: left center;
    filter: saturate(0.95);
}

/* Work Page */
.work-page {
    animation: fadeIn 0.5s ease-out;
    padding: 8rem 0 3rem;
    min-height: 100vh;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.page-subtitle a,
.page-subtitle a:visited,
.now-list a,
.now-list a:visited {
    color: var(--walter-green);
    text-decoration: underline;
    text-decoration-color: rgba(97, 175, 239, 0.55);
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    transition: text-decoration-thickness 0.15s ease, text-decoration-color 0.15s ease;
}

.page-subtitle a:hover,
.now-list a:hover {
    text-decoration-thickness: 2px;
    text-decoration-color: var(--walter-green);
}

/* Contact Page */
.contact-page {
    padding: 8rem 0 3rem;
    animation: fadeIn 0.5s ease-out;
    min-height: 100vh;
}

.contact-content-page {
    max-width: 720px;
    margin: 0 auto;
}

.copy-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.2rem;
    border-radius: 0.3rem;
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.9rem;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.copy-btn:hover {
    border-color: var(--walter-green);
    color: var(--walter-green);
}

.copy-btn.is-copied {
    border-color: var(--walter-green);
    color: var(--walter-green);
    opacity: 0.9;
}

.copy-btn--small {
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
}

.cmd-block {
    display: flex;
    align-items: stretch;
    gap: 0.5rem;
    width: 100%;
}

.cmd-block pre {
    flex: 1 1 auto;
    min-width: 0;
}

.cmd-copy {
    flex: 0 0 auto;
    align-self: center;
}

/* Vapor Link */
.vapor-link {
    opacity: 0.8;
    text-decoration: none;
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.95rem;
    transition: all 0.15s ease;
    display: inline-block;
    margin-left: 0.25rem;
}

.vapor-link:hover {
    opacity: 1;
    color: var(--text-primary);
    text-decoration: underline dotted;
    text-decoration-color: var(--text-secondary);
    transform: translateX(2px);
}

/* Env Export List */
.env-list {
    margin: 2.5rem 0;
    padding: 1rem 1.25rem;
    list-style: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 0.3rem;
    line-height: 1.5;
    max-width: 36rem;
}

.env-list li {
    margin: 0;
    padding: 0.4rem 0;
}

.env-cmd-link {
    color: inherit;
    text-decoration: none;
}

.env-cmd-link:hover {
    text-decoration: none;
}

.cmd-block pre {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 0.3rem;
    padding: 0.8rem 1rem;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    white-space: pre;
    overflow-x: auto;
}

@media (max-width: 420px) {
    .verify-steps pre,
    .cmd-block pre {
        font-size: 0.78rem;
        padding: 0.7rem 0.85rem;
    }

    .cmd-block pre {
        padding-right: 4.9rem;
    }

    .cmd-copy {
        right: 0.6rem;
    }
}

body.dark-mode .cmd-block pre {
    background: #1a1a1a;
}

.contact-note {
    margin-top: 3rem;
    padding: 1.5rem;
    background-color: var(--quote-bg);
    border-left: 3px solid var(--walter-green);
    border-radius: 0 0.3rem 0.3rem 0;
}

.contact-note p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.contact-note p + p {
    margin-top: 0.75rem;
}

/* No results message */
.no-results {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

.no-results p {
    font-size: 1.05rem;
}

/* Footer */
.footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    margin-top: 4rem;
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-family: 'IBM Plex Sans', sans-serif;
    margin-bottom: 0.5rem;
    letter-spacing: 0.01em;
}


body.dark-mode .shortcut-key {
    background: rgba(40, 40, 40, 0.9);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1.25rem;
        flex-wrap: wrap;
        row-gap: 0.5rem;
    }

    .nav-left {
        width: 100%;
        justify-content: space-between;
    }

    .nav-right {
        width: 100%;
        justify-content: flex-start;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: flex-start;
        row-gap: 0.35rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero {
        padding: 6rem 0 4rem;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    .section {
        padding: 2rem 0;
    }

    .section-title {
        display: block;
    }

    .section-kicker {
        display: block;
        margin: 0.55rem 0 0;
        white-space: normal;
    }

    .section-title-kicker {
        font-size: 1.35rem;
        letter-spacing: 0.16em;
    }

    .achievement-timeline {
        padding-left: 1.5rem;
    }

    .achievement-timeline::before {
        left: 0.45rem;
    }

    .achievement-item {
        grid-template-columns: 1fr;
        gap: 0.2rem;
        padding-bottom: 2rem;
    }

    .achievement-item::before {
        left: -1.43rem;
    }

    .achievement-year {
        font-size: 0.78rem;
    }

    .achievement-copy h3 {
        font-size: 1.16rem;
    }

    .achievement-copy p {
        font-size: 0.95rem;
    }

    .blog-workflow,
    .github-heatmap-header {
        display: block;
    }

    .workflow-link,
    .github-open {
        display: inline-block;
        margin-top: 0.9rem;
    }

    .github-heatmap img {
        min-height: 92px;
    }
    
    .project-card,
    .post-item {
        padding: 1rem;
        margin-bottom: 1.25rem;
    }
    
    .project-title,
    .post-title {
        font-size: 1.2rem;
    }
    
    .about-details {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .detail-group-separator {
        display: none;
    }
    
    .nav-links {
        gap: 1rem;
        font-size: 0.875rem;
    }
    
    .notes-grid {
        grid-template-columns: 1fr;
    }
    
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1.25rem;
    }

    .nav-logo {
        font-size: 1.15rem;
    }

    .nav-links {
        gap: 0.75rem;
        font-size: 0.8rem;
    }
    
    .container {
        padding: 0 1.25rem;
    }
    
    .hero {
        padding: 5rem 0 3rem;
    }
    
    .hero-greeting {
        font-size: 2.5rem;
    }
    
    .hero-intro,
    .hero-description {
        font-size: 0.9rem;
    }
    
    .quick-links {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .btn {
        width: auto;
        justify-content: flex-start;
    }
    
    .project-card,
    .post-item {
        padding: 0.875rem;
        margin-bottom: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }

    .section-title-kicker {
        font-size: 1.2rem;
        letter-spacing: 0.14em;
    }
    
    .footer {
        padding: 1.5rem 0;
    }
    
    .footer-colophon {
        font-size: 0.7rem;
        flex-wrap: wrap;
    }
    
    .scroll-indicator {
        display: none;
    }
}

/* ---------------------------------------------------------------------------
 * Post cards (home + blog index)
 * ------------------------------------------------------------------------- */

.post-list {
    display: grid;
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.post-card {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.25rem 1.5rem;
    background: rgba(255, 255, 255, 0.4);
    transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

body.dark-mode .post-card {
    background: rgba(42, 42, 42, 0.4);
}

.post-card:hover {
    border-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.post-card-title {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

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

.post-card-title a:hover {
    color: var(--walter-green);
}

.post-card-desc {
    color: var(--text-secondary);
    margin: 0 0 0.75rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

.post-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.post-card-sep {
    opacity: 0.5;
}

/* ---------------------------------------------------------------------------
 * Blog page + 404
 * ------------------------------------------------------------------------- */

.blog-page,
.error-page {
    padding: 7rem 0 3rem;
    min-height: 60vh;
}

.error-page .page-title {
    font-size: 4rem;
    margin-bottom: 0.5rem;
}

/* Blog page: two-column layout with tag-filter sidebar on the left. */
.blog-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 2.5rem;
    margin-top: 1.5rem;
    align-items: start;
}

.tag-filter {
    position: sticky;
    top: 6rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.4);
}

body.dark-mode .tag-filter {
    background: rgba(42, 42, 42, 0.4);
}

.tag-filter-heading {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin: 0 0 0.85rem;
}

.tag-filter-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.tag-filter-btn {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.45rem 0.7rem;
    border: 1px solid transparent;
    border-radius: 4px;
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.tag-filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.tag-filter-btn.is-active {
    color: var(--text-primary);
    border-color: var(--text-primary);
    background: rgba(74, 107, 214, 0.08);
}

.tag-filter-count {
    font-size: 0.78rem;
    opacity: 0.65;
}

.blog-empty {
    color: var(--text-secondary);
    font-style: italic;
    padding: 1rem 0;
}

@media (max-width: 720px) {
    .blog-layout {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    .tag-filter {
        position: static;
    }
    .tag-filter-list {
        flex-direction: row;
        flex-wrap: wrap;
    }
    .tag-filter-btn {
        flex: 0 0 auto;
    }
}

/* ---------------------------------------------------------------------------
 * Single-post page (post-page + post-content typography)
 * ------------------------------------------------------------------------- */

.post-page {
    padding-top: 6rem;
    padding-bottom: 4rem;
}

.post-container {
    max-width: 760px;
}

.post-back {
    display: inline-block;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

.post-back:hover {
    color: var(--walter-green);
}

.post-title {
    font-size: 2.25rem;
    line-height: 1.2;
    letter-spacing: -0.025em;
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.75rem;
    margin: 0 0 2.5rem;
    padding: 0;
    border: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.post-meta-sep {
    opacity: 0.5;
}

.post-content {
    line-height: 1.75;
    font-size: 1.05rem;
    color: var(--text-primary);
}

.post-content > * + * {
    margin-top: 1.25rem;
}

.post-content h2,
.post-content h3 {
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.post-content h2 { font-size: 1.5rem; }
.post-content h3 { font-size: 1.2rem; }

.post-content p {
    color: var(--text-primary);
}

.post-content a {
    color: var(--walter-green);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
}

.post-content a:hover {
    text-decoration-thickness: 2px;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 0.1em 0.35em;
    border-radius: 3px;
    background: rgba(107, 140, 255, 0.08);
    color: var(--text-primary);
}

body.dark-mode .post-content code {
    background: rgba(107, 140, 255, 0.14);
}

.post-content pre {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.55;
    padding: 1rem 1.25rem;
    border-radius: 6px;
    overflow-x: auto;
    background: #f6f5f2;
    border: 1px solid var(--border-color);
    margin: 1.5rem 0;
}

body.dark-mode .post-content pre {
    background: #161616;
    border-color: #2a2a2a;
}

.post-content pre code {
    padding: 0;
    background: transparent;
    font-size: inherit;
}

.post-content ul,
.post-content ol {
    padding-left: 1.5rem;
}

.post-content li + li {
    margin-top: 0.4rem;
}

.post-content blockquote {
    border-left: 3px solid var(--walter-green);
    padding: 0.25rem 0 0.25rem 1rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Pandoc highlighting wrapper */
.post-content div.sourceCode {
    margin: 1.5rem 0;
}

.post-content pre.sourceCode {
    margin: 0;
}

/* ---------------------------------------------------------------------------
 * Now page
 * ------------------------------------------------------------------------- */

.now-page {
    padding: 7rem 0 4rem;
    min-height: 60vh;
}

.now-block {
    margin: 2.5rem 0;
    max-width: 720px;
}

.now-section-title {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    border-left: 3px solid var(--walter-green);
    padding-left: 0.75rem;
}

.now-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.now-list li {
    color: var(--text-secondary);
    line-height: 1.7;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border-color);
}

.now-list li:last-child {
    border-bottom: none;
}

/* Training cards: visual stat panels for lifts + runs. */
.training-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.training-card {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem 1.1rem 1.1rem;
    background: rgba(255, 255, 255, 0.4);
}

body.dark-mode .training-card {
    background: rgba(42, 42, 42, 0.4);
}

.training-card-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.training-card-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.training-card-link {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 1px;
}

.training-card-link:hover {
    color: var(--walter-green);
    border-bottom-color: var(--walter-green);
}

.training-stats {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin: 0 0 0.85rem;
}

.training-stat {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.25rem 0;
    border-bottom: 1px dashed var(--border-color);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.training-stat:last-child {
    border-bottom: none;
}

.training-stat dt {
    color: var(--text-secondary);
    margin: 0;
}

.training-stat dd {
    margin: 0;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
}

.training-card-note {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.5;
    opacity: 0.85;
}

.training-extras {
    margin-top: 0.5rem;
}

@media (max-width: 720px) {
    .training-grid {
        grid-template-columns: 1fr;
    }
}

/* Graph panel embedded at the top of /blog.html: a bordered card containing
 * a force-directed graph of notes + tags. */
.graph-panel {
    margin: 1.5rem 0 2rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    background:
        radial-gradient(ellipse at center, rgba(74, 107, 214, 0.05) 0%, transparent 60%),
        rgba(255, 255, 255, 0.4);
}

body.dark-mode .graph-panel {
    background:
        radial-gradient(ellipse at center, rgba(97, 175, 239, 0.06) 0%, transparent 65%),
        rgba(42, 42, 42, 0.4);
}

.graph-panel-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.85rem 1.1rem;
    border-bottom: 1px solid var(--border-color);
}

.graph-panel-title {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    font-weight: 500;
}

.graph-panel-hint {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
    opacity: 0.75;
}

.graph-stage {
    position: relative;
    height: 420px;
    overflow: hidden;
    cursor: grab;
}

.graph-stage.is-dragging-bg {
    cursor: grabbing;
}

.graph-stage.is-dragging-node {
    cursor: grabbing;
}

.graph-stage svg {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
    user-select: none;
}

.graph-empty {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-style: italic;
    pointer-events: none;
}

.graph-empty[hidden] { display: none; }

.graph-empty a {
    color: var(--walter-green);
    margin-left: 0.25rem;
}

.graph-link {
    stroke: var(--border-color);
    stroke-width: 1;
    stroke-opacity: 0.55;
    transition: stroke 0.2s ease, stroke-opacity 0.2s ease, stroke-width 0.2s ease;
}

.graph-link.is-dim {
    stroke-opacity: 0.12;
}

.graph-link.is-active {
    stroke: var(--walter-green);
    stroke-opacity: 0.9;
    stroke-width: 1.5;
}

.graph-node {
    cursor: pointer;
    transition: opacity 0.25s ease;
}

.graph-node-dot {
    fill: var(--text-secondary);
    fill-opacity: 0.7;
    stroke: var(--text-primary);
    stroke-opacity: 0;
    stroke-width: 2;
    transition:
        fill 0.2s ease,
        fill-opacity 0.2s ease,
        stroke-opacity 0.2s ease,
        r 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.graph-node-tag .graph-node-dot {
    fill: var(--walter-green);
    fill-opacity: 0.55;
}

.graph-node-label {
    fill: var(--text-secondary);
    font-family: var(--font-sans, inherit);
    font-size: 11px;
    font-weight: 500;
    paint-order: stroke;
    stroke: var(--bg-primary, #0a0a0a);
    stroke-width: 3px;
    stroke-linejoin: round;
    pointer-events: none;
    transition: fill 0.2s ease, font-size 0.2s ease;
}

.graph-node-tag .graph-node-label {
    font-style: italic;
    font-size: 10px;
    opacity: 0.85;
}

.graph-stage.is-focused .graph-node.is-dim {
    opacity: 0.18;
}

.graph-node.is-active .graph-node-dot {
    fill: var(--walter-green);
    fill-opacity: 1;
    stroke-opacity: 0.4;
}

.graph-node.is-active .graph-node-label {
    fill: var(--text-primary);
    font-size: 12.5px;
}

.graph-node:hover .graph-node-dot {
    fill-opacity: 1;
}

.graph-legend {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    gap: 1rem;
    padding: 0.55rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: rgba(20, 20, 20, 0.55);
    backdrop-filter: blur(6px);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    pointer-events: none;
}

.graph-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.graph-legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-secondary);
}

.graph-legend-tag {
    background: var(--walter-green);
    opacity: 0.7;
}

@media (max-width: 720px) {
    .graph-stage {
        height: 320px;
    }
    .graph-panel-hint {
        display: none;
    }
    .graph-node-label {
        font-size: 10px;
    }
}

/* Hero status line: "Open to roles..." */
.hero-status {
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-left: 2px solid var(--walter-green);
    padding-left: 0.75rem;
}

.hero-status a {
    color: var(--walter-green);
    text-decoration: underline;
    text-decoration-color: rgba(97, 175, 239, 0.4);
    text-underline-offset: 3px;
}

.hero-status a:hover {
    color: var(--text-primary);
}

/* Footer feedback line */
.footer-feedback {
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    opacity: 0.85;
}

.footer-feedback a {
    color: var(--walter-green);
    text-decoration: underline;
    text-decoration-color: rgba(97, 175, 239, 0.35);
    text-underline-offset: 3px;
}

.footer-feedback a:hover {
    color: var(--text-primary);
}

/* "Explore as a graph" secondary CTA */
.view-all-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.btn-view-all-secondary {
    color: var(--text-secondary) !important;
}

.btn-view-all-secondary:hover {
    color: var(--text-primary) !important;
}

/* /now: two-column layout (Work / Training) + reading row beneath */
.now-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.now-updated-badge {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.3rem 0.7rem;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: rgba(97, 175, 239, 0.08);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.now-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
    margin: 2rem 0 0;
}

.now-grid .now-block {
    margin: 0;
    max-width: none;
}

.now-block-wide {
    max-width: none;
}

@media (max-width: 820px) {
    .now-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }
}

/* Tag cloud at top of /tags.html */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.85rem;
    align-items: baseline;
    margin: 1.5rem 0 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    line-height: 1.6;
}

.tag-cloud-item {
    display: inline-flex;
    align-items: baseline;
    gap: 0.25rem;
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px dashed transparent;
    transition: color 0.15s ease, border-bottom-color 0.15s ease;
}

.tag-cloud-item:hover {
    color: var(--walter-green);
    border-bottom-color: var(--walter-green);
}

.tag-cloud-count {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
    opacity: 0.7;
    margin-left: 0.15rem;
    font-weight: 400;
}

.tag-cloud-empty {
    color: var(--text-secondary);
    font-style: italic;
}

/* Anchor links on H2/H3 inside .post-content */
.post-content h2,
.post-content h3 {
    position: relative;
    scroll-margin-top: 6rem;
}

.post-content h2 .heading-anchor,
.post-content h3 .heading-anchor {
    position: absolute;
    left: -1.2rem;
    top: 0;
    color: var(--text-secondary);
    text-decoration: none;
    opacity: 0;
    transition: opacity 0.15s ease, color 0.15s ease;
    font-weight: 400;
    user-select: none;
}

.post-content h2:hover .heading-anchor,
.post-content h3:hover .heading-anchor,
.post-content h2 .heading-anchor:focus,
.post-content h3 .heading-anchor:focus {
    opacity: 0.7;
    color: var(--walter-green);
}

.post-content h2 .heading-anchor:hover,
.post-content h3 .heading-anchor:hover {
    opacity: 1;
}

/* Code block enhancements: language label + copy button */
.post-content .code-block-wrapper {
    position: relative;
    margin: 1.25rem 0;
}

.post-content .code-block-wrapper pre {
    margin: 0;
}

.code-block-toolbar {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    pointer-events: none;
}

.code-block-lang {
    pointer-events: none;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    background: rgba(97, 175, 239, 0.12);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: lowercase;
    letter-spacing: 0.04em;
}

.code-block-copy {
    pointer-events: auto;
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: rgba(20, 20, 20, 0.55);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.code-block-copy:hover {
    color: var(--text-primary);
    border-color: var(--walter-green);
}

.code-block-copy.is-copied {
    color: var(--walter-green);
    border-color: var(--walter-green);
}

/* Breadcrumbs on post pages */
.post-breadcrumbs {
    margin: 0 0 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
}

.post-breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px dashed transparent;
    transition: color 0.15s ease, border-bottom-color 0.15s ease;
}

.post-breadcrumbs a:hover {
    color: var(--walter-green);
    border-bottom-color: var(--walter-green);
}

.post-breadcrumb-sep {
    opacity: 0.5;
}

.post-breadcrumb-current {
    color: var(--text-primary);
    opacity: 0.85;
    max-width: 32ch;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 720px) {
    .post-breadcrumb-current {
        max-width: 18ch;
    }
}

/* Monospace training table — looks like an htop / training-log panel. */
.training-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin: 0 0 0.85rem;
}

.training-table thead th {
    text-align: left;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.7rem;
    padding: 0 0.5rem 0.4rem;
    border-bottom: 1px solid var(--border-color);
}

.training-table thead th:first-child { padding-left: 0; }
.training-table thead th:last-child  { padding-right: 0; text-align: right; }

.training-table tbody td {
    padding: 0.35rem 0.5rem;
    border-bottom: 1px dashed var(--border-color);
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
}

.training-table tbody td:first-child {
    color: var(--text-secondary);
    padding-left: 0;
}

.training-table tbody td:nth-child(2) {
    font-weight: 600;
}

.training-table tbody td:last-child {
    color: var(--text-secondary);
    opacity: 0.75;
    text-align: right;
    padding-right: 0;
    font-size: 0.78rem;
}

.training-table tbody tr:last-child td {
    border-bottom: none;
}

/* Status indicator dot. status-dot-active = green pulse for current items. */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-secondary);
    margin-right: 0.55rem;
    vertical-align: 2px;
    box-shadow: 0 0 0 0 rgba(74, 222, 128, 0);
    flex-shrink: 0;
}

.status-dot-active {
    background: #4ade80;
    box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
    animation: status-pulse 2.4s ease-out infinite;
}

@keyframes status-pulse {
    0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.5); }
    70% { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
    100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

@media (prefers-reduced-motion: reduce) {
    .status-dot-active { animation: none; }
}

/* Achievement timeline: highlight current items with a green pulse on the
 * existing dot, instead of an extra status-dot. */
.achievement-item.is-continuation .achievement-year {
    color: var(--text-secondary);
    opacity: 0.45;
}

.achievement-item.is-current::before {
    background: #4ade80;
    border-color: #4ade80;
    box-shadow: 0 0 0 4px var(--bg-primary), 0 0 0 6px rgba(74, 222, 128, 0.25);
    animation: status-pulse 2.4s ease-out infinite;
}

.achievement-item.is-current .achievement-year {
    color: #4ade80;
    opacity: 1;
}

/* Schematic-style notch on project cards: bottom-right corner cut out. */
.project-card {
    --notch: 16px;
    position: relative;
}

.project-card::after {
    content: '';
    position: absolute;
    right: 0;
    bottom: 0;
    width: var(--notch);
    height: var(--notch);
    background:
        linear-gradient(135deg, transparent 49.5%, var(--border-color) 50%, var(--border-color) 51%, transparent 52%);
    pointer-events: none;
}

@supports (clip-path: polygon(0 0)) {
    .project-card {
        clip-path: polygon(
            0 0,
            100% 0,
            100% calc(100% - var(--notch)),
            calc(100% - var(--notch)) 100%,
            0 100%
        );
    }
    .project-card::after { display: none; }
}

/* Tiny ephemeral toast for "copied" / "saved" feedback. */
.toast {
    position: fixed;
    left: 50%;
    bottom: 1.25rem;
    transform: translate(-50%, 8px);
    padding: 0.5rem 0.85rem;
    background: rgba(20, 20, 20, 0.92);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    pointer-events: none;
    opacity: 0;
    z-index: 200;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

@media (prefers-reduced-motion: reduce) {
    .toast { transition: none; }
}

/* Post sidebar TOC (≥1024px) */
.post-toc {
    display: none;
}

@media (min-width: 1100px) {
    .post-container {
        position: relative;
    }
    .post-toc {
        display: block;
        position: absolute;
        top: 7.5rem;
        left: calc(100% + 1.5rem);
        width: 220px;
        max-height: calc(100vh - 9rem);
        overflow-y: auto;
        font-family: var(--font-mono);
        font-size: 0.82rem;
        line-height: 1.5;
        padding-right: 0.5rem;
        position: sticky;
        align-self: start;
    }
    .post-page .post-container {
        max-width: 760px;
    }
    .post-toc {
        position: fixed;
        top: 7.5rem;
        left: calc(50% + 760px / 2 + 1.5rem);
    }
}

.post-toc-heading {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin: 0 0 0.6rem;
    font-weight: 500;
}

.post-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    border-left: 1px solid var(--border-color);
}

.post-toc-item {
    margin: 0;
}

.post-toc-item a {
    display: block;
    padding: 0.25rem 0 0.25rem 0.85rem;
    margin-left: -1px;
    color: var(--text-secondary);
    text-decoration: none;
    border-left: 1px solid transparent;
    transition: color 0.15s ease, border-left-color 0.15s ease;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.post-toc-item.is-h3 a {
    padding-left: 1.5rem;
    font-size: 0.78rem;
    opacity: 0.85;
}

.post-toc-item a:hover {
    color: var(--text-primary);
}

.post-toc-item a.is-active {
    color: var(--walter-green);
    border-left-color: var(--walter-green);
}

/* Compiler Explorer "godbolt" button on C/C++ code blocks */
.code-block-godbolt {
    pointer-events: auto;
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: rgba(20, 20, 20, 0.55);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.code-block-godbolt:hover {
    color: #4ade80;
    border-color: #4ade80;
}

/* Blog page: search input above the layout */
.blog-search {
    margin: 1.25rem 0 1rem;
}

.blog-search-input {
    width: 100%;
    max-width: 480px;
    padding: 0.55rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.4);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.88rem;
    transition: border-color 0.15s ease;
}

body.dark-mode .blog-search-input {
    background: rgba(42, 42, 42, 0.4);
}

.blog-search-input:focus {
    outline: none;
    border-color: var(--walter-green);
}

.blog-search-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Recent merged PRs widget on /work */
.recent-prs {
    margin: 1.5rem 0 2rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem 1.1rem;
    background: rgba(255, 255, 255, 0.4);
}

body.dark-mode .recent-prs {
    background: rgba(42, 42, 42, 0.4);
}

.recent-prs-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.recent-prs-title {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    font-weight: 500;
}

.recent-prs-link {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 1px;
}

.recent-prs-link:hover {
    color: var(--walter-green);
    border-bottom-color: var(--walter-green);
}

.recent-prs-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.recent-pr-link {
    display: grid;
    grid-template-columns: minmax(80px, max-content) 1fr auto;
    gap: 0.85rem;
    padding: 0.4rem 0.55rem;
    border-radius: 4px;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    transition: background 0.15s ease;
    align-items: baseline;
}

.recent-pr-link:hover {
    background: rgba(97, 175, 239, 0.06);
}

.recent-pr-repo {
    color: var(--walter-green);
    opacity: 0.85;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recent-pr-title {
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.recent-pr-meta {
    color: var(--text-secondary);
    font-size: 0.72rem;
    opacity: 0.75;
    white-space: nowrap;
}

.recent-prs-empty {
    color: var(--text-secondary);
    font-style: italic;
    margin: 0;
}

/* Optional project thumbnail */
.project-image {
    display: block;
    margin: -1px -1px 1rem;
    border-radius: 4px 4px 0 0;
    overflow: hidden;
    line-height: 0;
}

.project-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    transition: opacity 0.18s ease;
}

.project-card.has-image {
    padding-top: 0;
}

.project-card.has-image .project-image img:hover {
    opacity: 0.92;
}

/* Collapsed contact env block: three exports in one pre + one Copy button. */
.contact-env {
    position: relative;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.4);
    padding: 1rem 1.1rem;
    margin: 1rem 0 2rem;
}

body.dark-mode .contact-env {
    background: rgba(42, 42, 42, 0.4);
}

.contact-env-pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--text-primary);
    white-space: pre;
    overflow-x: auto;
}

.contact-env-line {
    display: block;
}

.contact-env-key {
    color: var(--text-secondary);
    opacity: 0.85;
}

.contact-env-pre .env-cmd-link {
    color: var(--walter-green);
    text-decoration: none;
    border-bottom: 1px dashed transparent;
    transition: border-bottom-color 0.15s ease;
}

.contact-env-pre .env-cmd-link:hover {
    border-bottom-color: var(--walter-green);
}

.contact-env-copy {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 0.2rem 0.55rem;
}

/* Reading progress bar: thin line fixed at the top of post pages,
 * width tracks scroll position through the article body. */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--walter-green);
    transform: scaleX(0);
    transform-origin: left center;
    z-index: 100;
    pointer-events: none;
    will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
    .reading-progress {
        transition: none;
    }
}

/* Back-to-top: appears once the reader is past 80% of the article body. */
.back-to-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: rgba(20, 20, 20, 0.7);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 90;
    backdrop-filter: blur(6px);
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.back-to-top.is-visible {
    opacity: 0.85;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    opacity: 1;
    border-color: var(--walter-green);
    color: var(--walter-green);
}

@media (prefers-reduced-motion: reduce) {
    .back-to-top { transition: none; }
}

/* Post meta: optional "Updated <date>" label */
.post-meta-updated {
    color: var(--walter-green);
    opacity: 0.85;
}

/* Adjacent-post navigation at the bottom of a post. */
.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 3rem 0 0;
    padding: 1.25rem 0 0;
    border-top: 1px solid var(--border-color);
}

.post-nav a {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.4);
    transition: border-color 0.18s ease, transform 0.18s ease;
    min-width: 0;
}

body.dark-mode .post-nav a {
    background: rgba(42, 42, 42, 0.4);
}

.post-nav a:hover {
    border-color: var(--walter-green);
    transform: translateY(-1px);
}

.post-nav-next {
    text-align: right;
}

.post-nav-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.post-nav-title {
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.35;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

@media (max-width: 600px) {
    .post-nav { grid-template-columns: 1fr; }
    .post-nav-next { text-align: left; }
}

/* ---------------------------------------------------------------------------
 * Tags page
 * ------------------------------------------------------------------------- */

.tags-page {
    padding: 7rem 0 4rem;
    min-height: 60vh;
}

.tag-section {
    margin: 2.5rem 0;
    max-width: 720px;
}

.tag-section-title {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    color: var(--walter-green);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.tag-section-title .tag-count {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-left: 0.5rem;
}

.tag-post-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tag-post-list li {
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    align-items: baseline;
}

.tag-post-list li:last-child {
    border-bottom: none;
}

.tag-post-list time {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-secondary);
    flex: 0 0 auto;
}

.tag-post-list a {
    color: var(--text-primary);
    text-decoration: none;
    flex: 1 1 auto;
}

.tag-post-list a:hover {
    color: var(--walter-green);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

/* ---------------------------------------------------------------------------
 * Post page header (article semantics)
 * ------------------------------------------------------------------------- */

.post-header {
    margin-bottom: 0;
}