:root {
  --page-bg: #f6f1e8;
  --paper: rgba(255, 252, 247, 0.9);
  --text: #171411;
  --muted: #6f675f;
  --rule: #d4cabf;
  --accent: #22313f;
  --startup: #d9e4ec;
  --research: #e8e0cf;
  --product: #ece4db;
  --invention: #e2e7dc;
  --shadow: 0 18px 60px rgba(23, 20, 17, 0.06);
  --font-body: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  --font-ui: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
  --toggle-bg: rgba(255, 255, 255, 0.56);
  --toggle-text: var(--muted);
}

:root[data-theme="dark"] {
  --page-bg: #17181b;
  --paper: rgba(28, 30, 34, 0.94);
  --text: #ece5d9;
  --muted: #b9afa4;
  --rule: #3a3f45;
  --accent: #d9e4ec;
  --startup: rgba(63, 90, 111, 0.45);
  --research: rgba(111, 96, 69, 0.4);
  --product: rgba(94, 77, 69, 0.45);
  --invention: rgba(79, 99, 82, 0.42);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
  --toggle-bg: rgba(255, 255, 255, 0.04);
  --toggle-text: #d3cbc0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.2)),
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.9), transparent 42%),
    var(--page-bg);
  font-family: var(--font-body);
  line-height: 1.6;
  transition: background-color 160ms ease, color 160ms ease;
}

:root[data-theme="dark"] body {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)),
    radial-gradient(circle at top left, rgba(113, 132, 149, 0.14), transparent 42%),
    var(--page-bg);
}

a {
  color: inherit;
}

button {
  font: inherit;
}

.page-shell {
  width: min(1080px, calc(100vw - 56px));
  margin: 56px auto 120px;
  padding: 42px;
  background: var(--paper);
  border: 1px solid rgba(112, 102, 92, 0.16);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  transition: background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.site-header {
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rule);
}

.site-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--rule);
  background: var(--toggle-bg);
  color: var(--toggle-text);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  outline: none;
}

.site-header h1 {
  margin: 0;
  max-width: 10ch;
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  line-height: 0.94;
  font-weight: 500;
}

.lede {
  margin: 26px 0 0;
  max-width: 64ch;
  font-size: 1.12rem;
  color: rgba(23, 20, 17, 0.86);
}

:root[data-theme="dark"] .lede,
:root[data-theme="dark"] .project-card__details {
  color: rgba(236, 229, 217, 0.84);
}

.primary-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.primary-links a {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--rule);
  font-family: var(--font-ui);
  font-size: 0.86rem;
  text-decoration: none;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.56);
  transition: border-color 160ms ease, color 160ms ease, background-color 160ms ease;
}

:root[data-theme="dark"] .primary-links a,
:root[data-theme="dark"] .info-card,
:root[data-theme="dark"] .project-card__thumb,
:root[data-theme="dark"] .image-modal,
:root[data-theme="dark"] .image-modal__close {
  background: rgba(255, 255, 255, 0.04);
}

.primary-links a:hover,
.primary-links a:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  outline: none;
}

.section {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--rule);
}

.section:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.section-heading h2 {
  margin: 0;
  font-size: 0.9rem;
  font-family: var(--font-ui);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.section-note {
  margin: 8px 0 0;
  font-size: 0.94rem;
  color: var(--muted);
}

.stack {
  display: grid;
  gap: 18px;
}

.info-card {
  padding: 18px 20px;
  border: 1px solid var(--rule);
  background: rgba(255, 255, 255, 0.54);
  transition: background-color 160ms ease, border-color 160ms ease;
}

.info-card h3,
.project-card__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 500;
}

.info-card p,
.project-card p {
  margin: 8px 0 0;
}

.meta-line {
  margin-top: 6px;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.inline-link {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.projects-list {
  display: grid;
}

.project-card {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
}

.project-card:first-child {
  border-top: none;
  padding-top: 0;
}

.project-card__date {
  font-family: var(--font-ui);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-card__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 12px;
}

.project-type {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-type--startup {
  background: var(--startup);
}

.project-type--research {
  background: var(--research);
}

.project-type--product {
  background: var(--product);
}

.project-type--invention {
  background: var(--invention);
}

.project-card__summary {
  margin-top: 8px;
}

.project-card__details {
  font-size: 0.98rem;
  color: rgba(23, 20, 17, 0.82);
}

.project-card__footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  align-items: center;
}

.project-card__link {
  font-family: var(--font-ui);
  font-size: 0.86rem;
  text-decoration: none;
  color: var(--accent);
}

.project-card__gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.project-card__thumb {
  position: relative;
  width: 56px;
  height: 56px;
  padding: 0;
  border: 1px solid var(--rule);
  background: rgba(255, 255, 255, 0.65);
  cursor: zoom-in;
  overflow: hidden;
}

.project-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project-card__thumb:hover,
.project-card__thumb:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.image-modal {
  width: min(1100px, calc(100vw - 24px));
  padding: 0;
  border: 1px solid rgba(23, 20, 17, 0.15);
  background: rgba(250, 247, 242, 0.97);
  box-shadow: var(--shadow);
}

.image-modal::backdrop {
  background: rgba(16, 14, 12, 0.72);
  backdrop-filter: blur(4px);
}

.image-modal__frame {
  padding: 16px;
}

.image-modal__close {
  display: inline-flex;
  margin-left: auto;
  margin-bottom: 12px;
  padding: 8px 10px;
  border: 1px solid var(--rule);
  background: #fff;
  color: var(--muted);
  cursor: pointer;
}

.image-modal__close:hover,
.image-modal__close:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
}

.image-modal img {
  width: 100%;
  max-height: calc(100vh - 140px);
  object-fit: contain;
  display: block;
  background: rgba(255, 255, 255, 0.8);
}

.image-modal p {
  margin: 12px 0 0;
  color: var(--muted);
}

@media (max-width: 760px) {
  .page-shell {
    width: calc(100vw - 20px);
    margin: 10px auto 28px;
    padding: 20px;
  }

  .site-header {
    padding-bottom: 28px;
  }

  .site-header__top {
    align-items: flex-start;
    flex-direction: column;
  }

  .section,
  .project-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .section {
    padding: 26px 0;
  }

  .project-card__date {
    order: -1;
  }
}