/* ============================================================
   Julius Störk — portfolio
   Shared styles for index.html and blog.html
   ============================================================ */

/* ---------- Fonts (self-hosted) ---------- */
@font-face {
  font-family: 'Noto Sans';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/noto-sans-latin-wght.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- Tokens ---------- */
:root,
[data-theme="light"] {
  --text-2xs: 0.6875rem;
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.84rem + 0.18vw, 0.9375rem);
  --text-base: clamp(1rem, 0.97rem + 0.16vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1.06rem + 0.3vw, 1.3125rem);
  --text-xl: clamp(1.375rem, 1.15rem + 0.9vw, 1.875rem);
  --text-2xl: clamp(1.75rem, 1.35rem + 1.6vw, 2.75rem);

  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --color-bg: #fdfdfc;
  --color-surface: #ffffff;
  --color-surface-2: #f5f6f7;
  --color-border: #e0e3e7;
  --color-divider: #eceff1;
  --color-text: #1b1d20;
  --color-text-muted: #5a6068;
  --color-text-faint: #868d95;
  --color-primary: #1256b8;
  --color-primary-hover: #0e4494;
  --color-primary-highlight: #e9f0fb;
  --color-text-inverse: #ffffff;
  --color-warn: #a45c00;
  --color-danger: #c5372c;
  --color-ok: #1e7a45;

  --cell-anode: rgba(56, 76, 88, .2);
  --cell-cathode: rgba(18, 86, 184, .2);
  --cell-separator: rgba(90, 110, 124, .13);
  --cell-ion: rgba(18, 86, 184, .4);
  --cell-flux: rgba(18, 86, 184, .31);
  --cell-potential: rgba(164, 92, 0, .24);

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-full: 999px;

  --shadow-sm: 0 1px 2px rgba(16, 20, 26, .05);
  --shadow-md: 0 4px 16px rgba(16, 20, 26, .07), 0 1px 3px rgba(16, 20, 26, .05);

  --font-body: 'Noto Sans', system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'Cascadia Mono', Menlo, Consolas, monospace;

  --content: 940px;
  --wide: 1120px;
}

[data-theme="dark"] {
  --color-bg: #101214;
  --color-surface: #16191b;
  --color-surface-2: #1d2124;
  --color-border: #2c3236;
  --color-divider: #23282c;
  --color-text: #e7e9ec;
  --color-text-muted: #b6bbc1;
  --color-text-faint: #8a9198;
  --color-primary: #8fb8f7;
  --color-primary-hover: #adcbfa;
  --color-primary-highlight: #17253a;
  --color-text-inverse: #101214;
  --color-warn: #f0b03a;
  --color-danger: #ef7166;
  --color-ok: #59c98a;
  --cell-anode: rgba(174, 194, 204, .18);
  --cell-cathode: rgba(143, 184, 247, .22);
  --cell-separator: rgba(174, 194, 204, .12);
  --cell-ion: rgba(143, 184, 247, .42);
  --cell-flux: rgba(143, 184, 247, .3);
  --cell-potential: rgba(240, 176, 58, .22);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-md: 0 4px 18px rgba(0, 0, 0, .45);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  isolation: isolate;
}

.microstructure-field {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .72;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: var(--color-bg);
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  text-decoration-color: color-mix(in srgb, currentColor 35%, transparent);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration-color: currentColor;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background: var(--color-primary-highlight);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: .5rem .9rem;
  border-radius: var(--radius-full);
  z-index: 30;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.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;
}

/* ---------- Layout ---------- */
.topbar-inner,
.content {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--color-divider);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 62px;
}

.site-title {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  text-decoration: none;
}

.site-title:hover {
  color: var(--color-text);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-surface) 94%, transparent);
  color: var(--color-text);
}

.nav-toggle-lines,
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  display: block;
  width: 17px;
  height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .2s, opacity .2s;
}

.nav-toggle-lines {
  position: relative;
  margin: auto;
}

.nav-toggle-lines::before,
.nav-toggle-lines::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav-toggle-lines::before { top: -5px; }
.nav-toggle-lines::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-lines { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::after { top: 0; transform: rotate(-45deg); }

.nav a {
  position: relative;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: .2rem 0;
}

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

.nav a:not(.current):hover::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: color-mix(in srgb, var(--color-primary) 45%, transparent);
}

.nav a.current {
  color: var(--color-text);
  font-weight: 600;
}

.nav a.current::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-muted);
  background: var(--color-surface);
  transition: border-color .2s, color .2s;
}

.theme-toggle:hover {
  border-color: var(--color-text-faint);
  color: var(--color-text);
}

main {
  padding: var(--space-10) 0 var(--space-16);
  position: relative;
  z-index: 1;
}

/* ---------- Typography ---------- */
h1 {
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: var(--space-3);
}

h2 {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-6);
}

h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
}

p {
  max-width: 68ch;
}

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

.article-meta {
  font-size: var(--text-sm);
}

.contact-links {
  margin-top: var(--space-4);
}

.lead {
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 60ch;
}

.eyebrow {
  font-size: var(--text-2xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--color-text-faint);
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-10);
  align-items: center;
  min-height: 410px;
  padding: var(--space-10) 0 var(--space-12);
  border-bottom: 1px solid var(--color-divider);
}

.hero h1 {
  font-size: clamp(2.25rem, 1.55rem + 2.5vw, 3.75rem);
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.hero-kicker::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

.affiliation {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

.affiliation span+span::before {
  content: '·';
  margin: 0 .5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .95rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background .18s, border-color .18s, color .18s;
}

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

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

.btn-ghost {
  border-color: var(--color-border);
  color: var(--color-text);
  background: var(--color-surface);
}

.btn-ghost:hover {
  border-color: var(--color-text-faint);
  background: var(--color-surface-2);
  color: var(--color-text);
}

.portrait-img {
  width: 176px;
  height: 176px;
  object-fit: cover;
  object-position: 50% 50%;
  border-radius: 50%;
  border: 3px solid var(--color-surface);
  outline: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  background: var(--color-surface-2);
  transition: transform .35s cubic-bezier(.34, 1.4, .64, 1);
}

.portrait-img:hover {
  transform: scale(1.04);
}

/* ---------- Sections ---------- */
.section {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-divider);
}

.section:last-of-type {
  border-bottom: none;
}

/* ---------- Research dossier ---------- */
.career-timeline {
  position: relative;
}

.career-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 146px;
  width: 1px;
  background: var(--color-border);
}

.career-entry {
  position: relative;
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: var(--space-12);
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-divider);
}

.career-entry:last-child {
  border-bottom: 1px solid var(--color-divider);
}

.career-entry::before {
  content: '';
  position: absolute;
  top: 2.15rem;
  left: 141px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  background: var(--color-bg);
}

.career-time time,
.career-time span {
  display: block;
}

.career-time time {
  margin-bottom: var(--space-1);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
}

.career-time span {
  color: var(--color-text-faint);
  font-size: var(--text-2xs);
  line-height: 1.45;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.career-body h3 {
  margin-bottom: var(--space-1);
  font-size: var(--text-base);
}

.career-body > p:last-of-type {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.career-place {
  margin-bottom: var(--space-3);
  color: var(--color-primary) !important;
}

.career-entry-featured {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.evidence-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-surface) 76%, transparent);
}

.evidence-item {
  padding: var(--space-5);
  min-width: 0;
}

.evidence-item + .evidence-item {
  border-left: 1px solid var(--color-border);
}

.evidence-item strong,
.evidence-item span {
  display: block;
}

.evidence-item strong {
  margin-bottom: var(--space-2);
  color: var(--color-primary);
  font-size: var(--text-lg);
  letter-spacing: -.025em;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.evidence-item strong sup {
  font-size: .55em;
  vertical-align: .5em;
}

.evidence-item span {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  line-height: 1.5;
}

.research-index {
  border-top: 1px solid var(--color-border);
}

.research-row {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: var(--space-8);
  align-items: start;
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
}

.research-code span,
.research-code small {
  display: block;
}

.research-code span {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  line-height: 1;
}

.research-code small {
  margin-top: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--text-2xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.research-copy {
  transition: transform .2s ease;
}

.research-row:hover .research-copy {
  transform: translateX(6px);
}

.research-copy h3 {
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
}

.research-copy p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.section-head h2 {
  margin-bottom: 0;
}

.link-more {
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.link-more:hover {
  text-decoration: underline;
}

.simple-list {
  display: grid;
  gap: var(--space-6);
}

.publication-index {
  border-top: 1px solid var(--color-border);
}

.publication-record {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: var(--space-6);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-border);
}

.publication-number {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  line-height: 1;
}

.publication-content {
  max-width: 72ch;
}

.publication-title-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.publication-title-row .badge { margin-left: 0; }

.publication-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.publication-actions .download-btn { margin-top: 0; }

.publication-note {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ---------- CV page ---------- */
.cv-profile {
  max-width: 72ch;
}

.cv-list {
  margin-top: var(--space-2);
  padding-left: 1.1rem;
  max-width: 72ch;
}

.cv-list li {
  margin-top: var(--space-1);
}

.cv-list li::marker {
  color: var(--color-text-faint);
}

.cv-list-flat {
  margin-top: 0;
}

.cv-skills {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: var(--space-2) var(--space-6);
  max-width: 72ch;
}

.cv-skills dt {
  font-weight: 600;
}

.cv-skills dd {
  margin: 0;
  color: var(--color-text-muted);
}

@media (max-width: 560px) {
  .cv-skills {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .cv-skills dd {
    margin-bottom: var(--space-3);
  }
}

/* Publication figures: static, theme-aware inline SVG. */
.pub-figure {
  margin: var(--space-4) 0 0;
}

.pub-figure svg {
  display: block;
  width: 100%;
  max-width: 480px;
  height: auto;
}

.pub-figure figcaption {
  max-width: 60ch;
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.fig-axis { stroke: var(--color-text-faint); stroke-width: 1; }
.fig-grid { stroke: var(--color-divider); stroke-width: 1; }
.fig-label {
  font-family: var(--font-body);
  font-size: 10px;
  fill: var(--color-text-muted);
}
.fig-label-primary {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 700;
  fill: var(--color-primary);
}

/* Citation disclosure below the action row. */
.bibtex {
  margin-top: var(--space-2);
}

.bibtex summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: var(--text-xs);
  font-weight: 500;
  padding: .35rem .7rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  width: fit-content;
  transition: background .18s, border-color .18s;
}

.bibtex summary::-webkit-details-marker { display: none; }

.bibtex summary:hover {
  background: var(--color-surface-2);
  border-color: var(--color-text-faint);
}

.bibtex[open] summary {
  background: var(--color-surface-2);
}

.bibtex-panel {
  position: relative;
  margin-top: var(--space-2);
  max-width: 62ch;
}

.bibtex-panel pre {
  margin: 0;
  padding: var(--space-4);
  padding-right: 4.5rem; /* keep the Copy button clear of the first lines */
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  line-height: 1.6;
  color: var(--color-text-muted);
  overflow-x: auto;
}

.bibtex-copy {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  font-size: var(--text-2xs);
  font-weight: 600;
  font-family: var(--font-body);
  padding: .2rem .55rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background .18s, border-color .18s, color .18s;
}

.bibtex-copy:hover {
  border-color: var(--color-text-faint);
  color: var(--color-text);
}

.bibtex-copy.copied {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.item {
  padding-left: var(--space-5);
  border-left: 2px solid var(--color-divider);
  transition: border-color .2s;
}

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

.item strong {
  font-weight: 600;
  color: var(--color-text);
}

.item p {
  margin-top: var(--space-1);
}

.badge {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-2xs);
  padding: .1rem .45rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  letter-spacing: .02em;
  margin-left: var(--space-2);
  display: inline-block;
  vertical-align: 2px;
  text-transform: uppercase;
}

.pub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.tag {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-2xs);
  padding: .1rem .45rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  letter-spacing: .02em;
  font-family: var(--font-mono, monospace);
}

.authors {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: var(--text-xs);
  padding: .35rem .7rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  margin-top: var(--space-3);
  text-decoration: none;
  width: fit-content;
  font-weight: 500;
  transition: background .18s, border-color .18s, color .18s, transform .12s;
}

.download-btn:hover {
  background: var(--color-primary-highlight);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.download-btn:active {
  transform: translateY(1px);
}

/* Reserved slot for links that are not live yet (e.g. arXiv pending). */
.download-btn-disabled {
  pointer-events: none;
  opacity: .55;
  border-style: dashed;
  color: var(--color-text-muted);
}

.download-btn svg {
  transition: transform .18s;
}

.download-btn:hover svg {
  transform: translateY(1px);
}

/* ---------- Journal index ---------- */
.journal-index {
  border-top: 1px solid var(--color-border);
}

.journal-entry {
  position: relative;
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) 32px;
  gap: var(--space-6);
  align-items: start;
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
}

.journal-meta time,
.journal-meta span {
  display: block;
}

.journal-meta time {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
}

.journal-meta span {
  margin-top: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--text-2xs);
  line-height: 1.45;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.journal-copy {
  transition: transform .2s ease;
}

.journal-entry:hover .journal-copy {
  transform: translateX(6px);
}

.journal-copy h3 {
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
}

.journal-copy p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.journal-arrow {
  color: var(--color-primary);
  font-size: var(--text-lg);
  transition: transform .2s ease;
}

.journal-entry:hover .journal-arrow {
  transform: translate(3px, -3px);
}

.page-head {
  padding: var(--space-2) 0 var(--space-10);
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-10);
}

.page-head h1 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

/* A post on its own page: no top rule, no scroll offset needed. */
.post {
  padding: var(--space-2) 0 var(--space-12);
}

.post-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: var(--space-2) 0 var(--space-3);
}

.post-pager {
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
}

.post-pager a {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  text-decoration: none;
}

.post-pager-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.post-pager a:hover .post-pager-title {
  color: var(--color-primary);
}

/* Whole journal row is one click target, but only the heading is a real link. */
.card-link {
  color: var(--color-text);
  text-decoration: none;
}

.card-link::after {
  content: '';
  position: absolute;
  inset: 0;
}

.journal-entry:hover .card-link {
  color: var(--color-primary);
}

/* ---------- Article (blog.html) ---------- */
.article {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-divider);
  scroll-margin-top: 84px;
}

.article:last-of-type {
  border-bottom: none;
}

.article-header {
  margin-bottom: var(--space-6);
}

.article-header h2 {
  font-size: var(--text-xl);
  margin: var(--space-2) 0 var(--space-3);
}

.prose {
  font-size: var(--text-base);
  line-height: 1.75;
}

.prose p {
  margin-bottom: var(--space-4);
  max-width: 68ch;
}

.prose h3 {
  font-size: var(--text-base);
  font-weight: 700;
  margin: var(--space-8) 0 var(--space-2);
}

.prose ul {
  margin: 0 0 var(--space-4) 1.1rem;
  max-width: 68ch;
}

.prose li {
  margin-bottom: var(--space-2);
}

.equation {
  display: block;
  text-align: center;
  margin: var(--space-6) 0;
  font-family: 'Cambria Math', 'Latin Modern Math', 'Times New Roman', serif;
  font-size: var(--text-lg);
  font-style: italic;
  background: var(--color-surface-2);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  border: 1px solid var(--color-border);
  max-width: 68ch;
}

.callout {
  max-width: 68ch;
  margin: var(--space-4) 0 var(--space-6);
  padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--color-warn);
  background: var(--color-surface-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.callout strong {
  color: var(--color-text);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: var(--text-sm);
  text-decoration: none;
  margin-bottom: var(--space-6);
}

.back-link::before {
  content: '←';
}

.back-link:hover {
  text-decoration: underline;
}

/* ---------- Interactive widgets ---------- */
.interactive {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: var(--space-6);
  background: var(--color-surface-2);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  border: 1px solid var(--color-border);
}

.widget-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  justify-content: center;
  min-width: 0;
}

.widget-title {
  font-size: var(--text-2xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--color-text-faint);
}

.widget-description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  max-width: none;
}

.widget-note {
  font-size: var(--text-2xs);
  color: var(--color-text-faint);
  line-height: 1.5;
  max-width: none;
}

.control-group {
  background: var(--color-surface);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.slider-label {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.slider-label output {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
}

/* Checkboxes in widget controls: comfortable touch target, themed. */
.slider-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.slider-input {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 2px solid var(--color-surface);
  box-shadow: 0 1px 3px rgba(0, 0, 0, .18);
  transition: transform .1s;
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider-input::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 2px solid var(--color-surface);
}

.metric-display {
  margin-top: var(--space-4);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-3);
}

.metric-item {
  font-size: var(--text-2xs);
  color: var(--color-text-muted);
  line-height: 1.4;
}

.metric-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: var(--text-xs);
  font-weight: 600;
}

.status-pill::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

.widget-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: var(--space-4);
  min-height: 320px;
  min-width: 0;
}

.widget-visual svg {
  width: 100%;
  height: auto;
}

.text-label {
  font-family: var(--font-body);
  font-size: 11px;
  fill: var(--color-text);
  font-weight: 600;
}

.text-label-faint {
  font-family: var(--font-body);
  font-size: 10px;
  fill: var(--color-text-faint);
}

.text-tick {
  font-family: var(--font-mono);
  font-size: 9px;
  fill: var(--color-text-faint);
}

.vector-arrow {
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-theme="dark"] .widget-visual {
  background: #14171a;
}

[data-theme="dark"] .control-group {
  background: #1a1e21;
}

/* ---------- Footer ---------- */
footer {
  padding: var(--space-8) 0 var(--space-12);
  border-top: 1px solid var(--color-divider);
  color: var(--color-text-faint);
  font-size: var(--text-sm);
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .interactive {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .topbar-inner {
    min-height: 58px;
    position: relative;
  }

  .nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: min(280px, calc(100vw - 40px));
    display: grid;
    gap: 0;
    padding: var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--color-surface) 96%, transparent);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(18px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .18s, visibility .18s, transform .18s;
  }

  .nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav a {
    padding: .7rem .8rem;
    border-radius: var(--radius-md);
  }

  .nav a:hover { background: var(--color-surface-2); }
  .nav a.current::after { display: none; }

  .nav-toggle {
    display: grid;
    place-items: center;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    justify-items: start;
  }

  .hero-portrait {
    order: -1;
  }

  .portrait-img {
    width: 132px;
    height: 132px;
  }

  .theme-toggle {
    margin: var(--space-2) 0 var(--space-1) var(--space-2);
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .hero { min-height: auto; }

  .microstructure-field { opacity: .3; }

  .career-timeline::before { left: 5px; }

  .career-entry {
    grid-template-columns: 1fr;
    gap: var(--space-3);
    padding-left: var(--space-6);
  }

  .career-entry::before {
    left: 0;
    top: 2rem;
  }

  .career-time {
    display: flex;
    align-items: baseline;
    gap: var(--space-3);
  }

  .evidence-strip {
    grid-template-columns: 1fr;
  }

  .evidence-item + .evidence-item {
    border-left: 0;
    border-top: 1px solid var(--color-border);
  }

  .research-row {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: var(--space-4);
  }

  .research-code span { font-size: var(--text-lg); }

  .publication-record {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: var(--space-3);
    padding: var(--space-6) 0;
  }

  .publication-number { font-size: var(--text-lg); }

  .publication-title-row strong { font-size: var(--text-base); }

  .journal-entry {
    grid-template-columns: minmax(0, 1fr) 24px;
    gap: var(--space-3);
  }

  .journal-meta {
    grid-column: 1 / -1;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-3);
  }

  .journal-meta span { margin-top: 0; text-align: right; }

  .journal-copy { grid-column: 1; }
  .journal-arrow { grid-column: 2; align-self: start; }
}

.publication-title-row strong {
  font-size: var(--text-lg);
  line-height: 1.35;
}

/* Between the desktop and phone breakpoints the evidence strip sits in a
   narrow career column; three columns get cramped, so stack early. */
@media (max-width: 1000px) {
  .evidence-strip {
    grid-template-columns: 1fr;
  }

  .evidence-item {
    padding: var(--space-4) var(--space-5);
  }

  .evidence-item + .evidence-item {
    border-left: 0;
    border-top: 1px solid var(--color-border);
  }
}

@media (max-width: 560px) {
  .publication-actions {
    gap: var(--space-2);
  }

  .publication-actions .download-btn {
    flex: 1 1 calc(50% - var(--space-2));
    justify-content: center;
    min-height: 40px;
    width: auto;
  }

  .bibtex-panel {
    max-width: 100%;
  }

  .pub-figure svg {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {

  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

@media print {

  .topbar,
  .theme-toggle,
  .interactive {
    display: none;
  }
}