/* verlynfischer.com — one stylesheet for every page.
   Palette follows the summary deck: navy, cream, light-blue accent, amber second accent. */

:root {
  --bg: #f6f3ec;
  --surface: #fffdf8;
  --surface-2: #efebe2;
  --ink: #1d1d1f;
  --muted: #5b5b60;
  --rule: #ddd7cb;
  --accent: #2f5d8a;          /* links and buttons on light backgrounds */
  --accent-ink: #ffffff;
  --navy: #18222f;            /* header, hero, footer: the same in both themes */
  --navy-2: #223043;
  --on-navy: #f3efe6;
  --on-navy-muted: #b9c2cf;
  --sky: #8fb4d9;             /* accent on navy */
  --amber: #e0a96d;
  --shadow: 0 1px 2px rgba(24, 34, 47, 0.06), 0 8px 24px rgba(24, 34, 47, 0.08);
  --serif: "Source Serif 4", Charter, Georgia, serif;
  --sans: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121820;
    --surface: #1b232e;
    --surface-2: #222c39;
    --ink: #ece9e2;
    --muted: #a3abb6;
    --rule: #2e3846;
    --accent: #8fb4d9;
    --accent-ink: #121820;
    --navy: #0d131a;
    --navy-2: #1b2633;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #121820;
  --surface: #1b232e;
  --surface-2: #222c39;
  --ink: #ece9e2;
  --muted: #a3abb6;
  --rule: #2e3846;
  --accent: #8fb4d9;
  --accent-ink: #121820;
  --navy: #0d131a;
  --navy-2: #1b2633;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.6;
}

a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 2px; }
img { max-width: 100%; display: block; }

.wrap { max-width: 68rem; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.wrap.narrow > * { max-width: 44rem; }   /* reading column, aligned with the hero text */
@media (min-width: 48rem) { .wrap { padding-left: 32px; padding-right: 32px; } }

/* ---------- Header with pull-down menu ---------- */
.site-header { background: var(--navy); color: var(--on-navy); position: relative; z-index: 10; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4rem; }
.site-name {
  font-family: var(--sans); font-weight: 600; font-size: 1.05rem; letter-spacing: 0.01em;
  color: var(--on-navy); text-decoration: none; display: flex; align-items: center; gap: 0.6rem;
}
.site-name img { width: 26px; height: 26px; }

.menu { position: relative; font-family: var(--sans); }
.menu > summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.45rem 0.85rem; border: 1px solid rgba(243, 239, 230, 0.28); border-radius: 999px;
  font-size: 0.95rem; color: var(--on-navy);
}
.menu > summary::-webkit-details-marker { display: none; }
.menu > summary:hover { border-color: var(--sky); }
.menu > summary .chev { width: 10px; height: 10px; transition: transform 0.15s ease; }
.menu[open] > summary .chev { transform: rotate(180deg); }
.menu-panel {
  position: absolute; right: 0; top: calc(100% + 10px);
  width: min(20rem, calc(100vw - 32px));
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--rule); border-radius: 10px; box-shadow: var(--shadow);
  padding: 0.5rem;
}
.menu-panel a {
  display: block; padding: 0.55rem 0.75rem; border-radius: 6px;
  color: var(--ink); text-decoration: none; font-size: 0.95rem;
}
.menu-panel a:hover, .menu-panel a:focus-visible { background: var(--surface-2); }
.menu-panel a[aria-current="page"] { font-weight: 600; }
.menu-panel a .sub { display: block; font-size: 0.8rem; color: var(--muted); }
.menu-label {
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); padding: 0.75rem 0.75rem 0.25rem; margin: 0;
}
.menu-panel hr { border: 0; border-top: 1px solid var(--rule); margin: 0.4rem 0.25rem; }

/* ---------- Inverted hero ---------- */
.hero { background: var(--navy); color: var(--on-navy); position: relative; overflow: hidden; }
.hero .art {
  position: absolute; top: 0; height: 100%; left: calc(50% - 4rem); width: max(52rem, 66%);
  object-fit: cover; object-position: left center; pointer-events: none;
  -webkit-mask-image: linear-gradient(to right, transparent 8%, #000 38%);
  mask-image: linear-gradient(to right, transparent 8%, #000 38%);
}
.hero .wrap { position: relative; padding-top: 4.5rem; padding-bottom: 5rem; }
.hero-text { max-width: 34rem; }
.eyebrow {
  font-family: var(--sans); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--sky); margin: 0 0 1rem;
}
.hero h1 {
  font-family: var(--serif); font-weight: 600; font-size: clamp(2.3rem, 6.5vw, 3.9rem);
  line-height: 1.06; letter-spacing: -0.015em; margin: 0;
}
.hero h1 em { font-style: italic; color: var(--sky); }
.hero .lede { color: var(--on-navy-muted); font-size: clamp(1.1rem, 2.4vw, 1.3rem); line-height: 1.5; margin: 1.25rem 0 0; }
.hero .actions { margin-top: 2rem; }
.hero.compact .wrap { padding-top: 3.25rem; padding-bottom: 3.5rem; }
.hero.compact h1 { font-size: clamp(2.1rem, 6vw, 3.3rem); }
.hero.compact .art { opacity: 0.55; }

@media (max-width: 48rem) {
  .hero .art { left: 0; width: 140%; opacity: 0.3; -webkit-mask-image: none; mask-image: none; }
  .hero.compact .art { opacity: 0.25; }
  .hero .wrap { padding-top: 3rem; padding-bottom: 3.5rem; }
}

/* ---------- Buttons ---------- */
.actions { display: flex; flex-wrap: wrap; gap: 0.65rem; }
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--sans); font-size: 0.92rem; font-weight: 600;
  padding: 0.6rem 1.05rem; border-radius: 999px; text-decoration: none;
  border: 1px solid var(--accent); color: var(--accent); background: transparent;
}
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.on-navy .btn { border-color: rgba(243, 239, 230, 0.4); color: var(--on-navy); }
.on-navy .btn.primary { background: var(--sky); border-color: var(--sky); color: var(--navy); }

/* ---------- Principles strip (home) ---------- */
.strip { background: var(--surface-2); border-bottom: 1px solid var(--rule); }
.strip ul {
  list-style: none; margin: 0; padding: 1.5rem 0;
  display: grid; gap: 1rem 2rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
}
.strip li { display: flex; gap: 0.8rem; align-items: flex-start; font-family: var(--sans); font-size: 0.92rem; color: var(--muted); line-height: 1.45; }
.strip li strong { display: block; color: var(--ink); font-size: 0.98rem; }
.strip .dot { flex: none; width: 10px; height: 10px; border-radius: 50%; margin-top: 0.4rem; background: #c98a45; }

/* ---------- Sections ---------- */
main { display: block; }
.section { padding-top: 3.5rem; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
h1, h2, h3 { line-height: 1.15; margin: 0; }
h2 { font-family: var(--serif); font-size: clamp(1.6rem, 4vw, 2.1rem); font-weight: 600; letter-spacing: -0.01em; }
h3 { font-family: var(--sans); font-size: 1.15rem; font-weight: 600; }
.section-note { font-family: var(--sans); font-size: 0.9rem; color: var(--muted); margin: 0; }
p { margin: 0.9rem 0; }
.small { font-family: var(--sans); font-size: 0.9rem; color: var(--muted); }

/* ---------- Work cards (home) ---------- */
.works { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 22rem), 1fr)); }
.work {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 4px 12px 12px 4px; overflow: hidden;
  padding-left: 5px;
  box-shadow: var(--shadow); transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.work::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--sky); z-index: 1; }   /* ties image and text together */
.work:hover { transform: translateY(-3px); }
.work .thumb { aspect-ratio: 16 / 9; background: var(--surface-2); }
.work .thumb img { width: 100%; height: 100%; object-fit: cover; }
.work .thumb.figure { background: #ffffff; display: flex; align-items: center; }   /* charts: never crop */
.work .thumb.figure img { object-fit: contain; height: auto; }
.work .body { padding: 1.25rem 1.35rem 1.4rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.tag {
  align-self: flex-start; font-family: var(--sans); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent);
  padding: 0.2rem 0.55rem; border-radius: 999px;
}
.work h3 { font-family: var(--serif); font-size: 1.45rem; }
.work h3 a { color: var(--ink); text-decoration: none; }
.work h3 a::after { content: ""; position: absolute; inset: 0; }   /* whole card is the link */
.work p { margin: 0; font-size: 1.02rem; }
.work .includes { font-family: var(--sans); font-size: 0.85rem; color: var(--muted); margin-top: auto; padding-top: 0.6rem; }
.work .more { font-family: var(--sans); font-size: 0.92rem; font-weight: 600; color: var(--accent); }
@media (min-width: 60rem) {
  .work.featured { grid-column: 1 / -1; flex-direction: row; }
  .work.featured .thumb { flex: 0 0 55%; aspect-ratio: auto; border-bottom: 0; }
  .work.featured .body { padding: 2rem 2.25rem; justify-content: center; }
  .work.featured h3 { font-size: 1.9rem; }
}

/* ---------- Project page ---------- */
.findings { padding-left: 1.4rem; }
.findings li { margin: 0.7rem 0; padding-left: 0.25rem; }
.docs { display: grid; gap: 1rem; margin-top: 1.25rem; }
.doc { background: var(--surface); border: 1px solid var(--rule); border-left: 5px solid var(--sky); padding: 1.3rem 1.35rem 1.2rem; border-radius: 4px 10px 10px 4px; box-shadow: var(--shadow); }
.doc .type { font-family: var(--sans); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.doc h3 { font-family: var(--serif); font-size: 1.3rem; margin: 0.3rem 0 0.2rem; }
.doc .meta { font-family: var(--sans); font-size: 0.85rem; color: var(--muted); margin: 0 0 0.6rem; }
.doc p { margin: 0.5rem 0 1rem; font-size: 1.05rem; }
.cite { font-size: 1rem; background: var(--surface); border: 1px solid var(--rule); padding: 0.9rem 1rem; border-radius: 8px; overflow-wrap: anywhere; }
details.bib { margin-top: 0.75rem; font-family: var(--sans); font-size: 0.9rem; }
details.bib summary { cursor: pointer; color: var(--accent); }
pre { font-family: var(--mono); font-size: 0.8rem; line-height: 1.45; background: var(--surface); border: 1px solid var(--rule); padding: 0.9rem 1rem; border-radius: 8px; overflow-x: auto; white-space: pre; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: var(--on-navy-muted); margin-top: 5rem; }
.site-footer .wrap { padding-top: 2rem; padding-bottom: 2.25rem; font-family: var(--sans); font-size: 0.875rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; }
.site-footer p { margin: 0; }
.site-footer a { color: var(--on-navy); }

@media (max-width: 30rem) {
  body { font-size: 1.05rem; }
  .section { padding-top: 2.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  .work, .menu > summary .chev { transition: none; }
  .work:hover { transform: none; }
}