:root {
  color-scheme: light dark;
  --paper: #f7f5f0;
  --surface: #ffffff;
  --surface-2: #f1eee7;
  --ink: #1e2124;
  --muted: #5f646a;
  --line: #e0dcd2;
  --line-strong: #c8c3b6;
  --accent: #1f5d50;
  --accent-hover: #174a40;
  --accent-soft: #e2efe9;
  --on-accent: #ffffff;
  --eye: #b8381c;
  --danger: #a5331f;
  --danger-soft: #f9e7e2;
  --shadow: 0 1px 2px rgb(30 33 36 / 6%), 0 6px 20px rgb(30 33 36 / 5%);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #15171a;
    --surface: #1e2125;
    --surface-2: #272b30;
    --ink: #ecebe6;
    --muted: #a3a8ae;
    --line: #33383e;
    --line-strong: #4a5057;
    --accent: #79c7b1;
    --accent-hover: #93d6c3;
    --accent-soft: #1d3a33;
    --on-accent: #0f211c;
    --eye: #ec7a5c;
    --danger: #ef917c;
    --danger-soft: #3f231d;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 20%);
  }
}

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.55 var(--sans);
}

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }
h1, h2, h3 { line-height: 1.2; margin: 0; }
h1 { font: 600 clamp(1.7rem, 4vw, 2.3rem)/1.15 var(--serif); letter-spacing: -.01em; }
h2 { font: 600 1.25rem/1.25 var(--serif); }
h3 { font-size: .95rem; font-weight: 600; }
p { margin: 0 0 .75rem; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* Header and footer */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: .55rem 16px;
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font: 600 1.15rem var(--serif);
  color: var(--ink);
  text-decoration: none;
}
.brand-mark { width: 34px; height: 34px; overflow: hidden; border-radius: 50%; background: #fff; flex: none; }
.brand-mark img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.75) translate(1%, -3%); }
.site-nav { display: flex; flex-wrap: wrap; gap: .1rem .25rem; align-items: center; margin: 0 -.5rem; }
.site-nav a, .site-nav button {
  padding: .3rem .6rem;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--muted);
  font: inherit;
  font-size: .94rem;
  text-decoration: none;
  cursor: pointer;
}
.site-nav a:hover, .site-nav button:hover { background: var(--surface-2); color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); font-weight: 550; }
.site-nav form { display: inline; }

.site-footer {
  margin-top: auto;
  padding: 1.5rem 16px 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .875rem;
  text-align: center;
}
.site-footer a { color: inherit; }

/* Page frame */
.page { width: 100%; max-width: 1160px; margin: 0 auto; padding: 1.75rem 16px 3.5rem; }
.page-narrow { max-width: 760px; margin-inline: auto; }
.page-head { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; align-items: flex-start; justify-content: space-between; margin-bottom: 1.5rem; }
.page-head p { margin: .35rem 0 0; color: var(--muted); }
.eyebrow { font-size: .8rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--eye); margin-bottom: .35rem; }
.actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.section-head { display: flex; flex-wrap: wrap; gap: .25rem 1rem; align-items: baseline; justify-content: space-between; margin-bottom: .75rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

.flash { margin-bottom: 1.25rem; padding: .65rem .95rem; border-radius: 10px; background: var(--accent-soft); font-size: .95rem; }
.flash-alert { background: var(--danger-soft); }

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.panel h2 { margin-bottom: .75rem; }
.panel h3 { margin: 1rem 0 .3rem; }

.layout-side { display: grid; gap: 1.25rem; grid-template-columns: minmax(0, 1fr) 340px; align-items: start; }
.sticky-panel { position: sticky; top: 72px; max-height: calc(100vh - 88px); overflow-y: auto; }
@media (max-width: 880px) {
  .layout-side { grid-template-columns: minmax(0, 1fr); }
  .sticky-panel { position: static; max-height: none; overflow: visible; }
}

/* Buttons */
.button, button, input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .35rem;
  min-height: 38px;
  padding: .4rem .95rem;
  border: 1px solid var(--accent);
  border-radius: 9px;
  background: var(--accent);
  color: var(--on-accent);
  font: 550 .94rem var(--sans);
  text-decoration: none;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
}
.button:hover, button:hover, input[type="submit"]:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.button-quiet { background: var(--surface); border-color: var(--line-strong); color: var(--ink); }
.button-quiet:hover { background: var(--surface-2); border-color: var(--line-strong); color: var(--ink); }
.button-danger { background: var(--surface); border-color: var(--line-strong); color: var(--danger); }
.button-danger:hover { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
.button-wide { width: 100%; }
.button-text {
  min-height: 0;
  padding: .15rem .35rem;
  border: 0;
  background: none;
  color: var(--accent);
  font-size: .85rem;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.button-text:hover { background: none; color: var(--accent-hover); }
form.button_to { display: inline-flex; margin: 0; }

/* Forms */
label { display: block; font-size: .875rem; color: var(--muted); margin-bottom: .6rem; }
input[type="text"], input[type="email"], input[type="password"], input[type="number"], textarea, select {
  display: block;
  width: 100%;
  margin-top: .2rem;
  padding: .45rem .6rem;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font: 1rem var(--sans);
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
select { width: auto; display: inline-block; margin-right: .25rem; }
textarea { min-height: 76px; }
.field-grid { display: grid; gap: 0 .75rem; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
.hint { color: var(--muted); font-size: .85rem; margin: .2rem 0 .75rem; }
.choice { display: flex; align-items: center; gap: .45rem; color: var(--ink); font-size: .92rem; margin-bottom: .35rem; }
.website-field { position: absolute; left: -10000px; }
details.more { border-top: 1px solid var(--line); margin-top: .9rem; padding-top: .7rem; }
details.more summary { cursor: pointer; font-weight: 600; font-size: .92rem; color: var(--ink); }
details.more[open] summary { margin-bottom: .7rem; }

/* Cross: parents */
.parents {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: .75rem;
  align-items: stretch;
  margin-bottom: 1.25rem;
}
.parent {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .7rem 1rem .5rem;
  box-shadow: var(--shadow);
  min-width: 0;
}
.parent-label { font-size: .8rem; font-weight: 600; color: var(--muted); }
.parents-times { align-self: center; font: 1.5rem var(--serif); color: var(--eye); }
@media (max-width: 640px) {
  .parents { grid-template-columns: minmax(0, 1fr); gap: .35rem; }
  .parents-times { justify-self: center; }
}

.owner { display: flex; gap: .75rem; align-items: center; }
.avatar { width: 44px; height: 44px; border-radius: 50%; display: block; background: var(--surface-2); }
.avatar-small { width: 30px; height: 30px; border-radius: 50%; display: block; background: var(--surface-2); }

.tabs { display: inline-flex; flex-wrap: wrap; gap: 2px; padding: 3px; margin-bottom: 1.25rem; border-radius: 11px; background: var(--surface-2); }
.tabs a { padding: .35rem .85rem; border-radius: 8px; color: var(--muted); font-size: .92rem; font-weight: 550; text-decoration: none; }
.tabs a:hover { color: var(--ink); }
.tabs a[aria-current="page"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgb(0 0 0 / 12%); }

/* Genotypes */
.genotype { overflow-x: auto; overflow-y: hidden; max-width: 100%; }
.genotype mjx-container[display="true"] { margin: .35rem 0 !important; }
.genotype-left mjx-container[display="true"] { text-align: left !important; }
.math-pending .genotype { visibility: hidden; }

.fly-list { display: grid; gap: .6rem; grid-template-columns: repeat(auto-fill, minmax(245px, 1fr)); }
.fly {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: .35rem .8rem .55rem;
  min-width: 0;
  transition: border-color .12s, box-shadow .12s;
}
.fly:has(input:checked) { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.fly-recombinant { border-style: dashed; }
.fly-tag { color: var(--muted); font-size: .75rem; }
.fly-parent { border-color: var(--accent); background: var(--accent-soft); }
.fly-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem; margin-top: .25rem; }
.fly-actions .button-text { margin-left: auto; }

.pick { display: inline-flex; margin: 0; cursor: pointer; }
.pick input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pick span {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .12rem .6rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  font-size: .85rem;
  white-space: nowrap;
}
.pick:hover span { border-color: var(--accent); color: var(--ink); }
.pick input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.pick input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.chromosome-columns { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); margin-bottom: 1rem; }
.chromosome-columns h2 { margin-bottom: .5rem; }
.chromosome-columns .fly { margin-bottom: .5rem; }

/* Tables */
.table-wrap { overflow-x: auto; padding: 0; }
table { border-collapse: collapse; width: 100%; font-size: .94rem; }
th { font-size: .78rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); text-align: left; }
th, td { padding: .55rem .9rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: color-mix(in srgb, var(--surface-2) 45%, transparent); }
.cell-actions { display: flex; flex-direction: column; gap: .25rem; align-items: flex-start; }
.punnett { width: auto; min-width: 100%; }
.punnett th, .punnett td { text-align: center; border: 1px solid var(--line); text-transform: none; letter-spacing: 0; color: inherit; }
.punnett thead th, .punnett tbody th { background: var(--surface-2); }

/* Lists of crosses */
.month { margin: 1.5rem 0 .6rem; color: var(--muted); font: 600 1rem var(--sans); }
.cross-row {
  display: block;
  margin-bottom: .6rem;
  padding: .55rem 1.1rem .7rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: inherit;
  text-decoration: none;
  transition: border-color .12s, box-shadow .12s;
}
.cross-row:hover { border-color: var(--line-strong); box-shadow: var(--shadow); color: inherit; }
.cross-row-meta { display: flex; flex-wrap: wrap; gap: .1rem 1rem; justify-content: space-between; font-size: .9rem; }
.empty { padding: 2.5rem 1.5rem; text-align: center; border: 1px dashed var(--line-strong); border-radius: var(--radius); color: var(--muted); }
.empty p:last-child { margin: 0; }

.details { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: .35rem 1.25rem; margin: 0 0 1rem; }
.details dt { color: var(--muted); font-size: .9rem; }
.details dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 480px) {
  .details { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .details dd { margin-bottom: .55rem; }
}

/* QR */
.qr { position: relative; width: min(460px, 100%); padding: 1rem; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 1rem; }
.qr svg { display: block; width: 100%; height: auto; }
.qr img { position: absolute; inset: 1rem; width: calc(100% - 2rem); height: calc(100% - 2rem); }

/* Account pages */
.auth { max-width: 410px; margin: 2rem auto 0; }
.auth h1 { margin-bottom: 1rem; }
.auth .panel { padding: 1.4rem; }
.auth-links { margin-top: 1rem; text-align: center; font-size: .92rem; }

/* Home */
.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  overflow: hidden;
  margin: -1.75rem calc(50% - 50vw) 2.5rem;
  background: #fff;
  color: #1e2124;
  border-bottom: 1px solid var(--line);
}
.home-hero-copy { padding: clamp(2.5rem, 7vw, 5.5rem) 16px clamp(2.5rem, 7vw, 5.5rem) max(16px, calc(50vw - 564px)); align-self: center; }
.home-hero h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); margin-bottom: 1rem; color: #1e2124; }
.home-hero p { font-size: 1.1rem; color: #52575d; max-width: 34em; margin-bottom: 1.5rem; }
.home-hero .eyebrow { color: #b8381c; }
.home-hero .button-quiet { background: #fff; color: #1e2124; border-color: #c8c3b6; }
.home-hero .button { border-color: #1f5d50; }
.home-hero .button:not(.button-quiet) { background: #1f5d50; color: #fff; }
.home-hero img { display: block; width: 100%; height: 100%; min-height: 300px; max-height: 560px; object-fit: cover; object-position: 30% 45%; }
@media (max-width: 760px) {
  .home-hero { grid-template-columns: minmax(0, 1fr); }
  .home-hero-copy { padding-inline: 16px; padding-bottom: 1rem; }
  .home-hero img { min-height: 0; max-height: 300px; }
}
.features { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-bottom: 2rem; }
.feature { border-top: 2px solid var(--eye); padding-top: .8rem; }
.feature h2 { margin-bottom: .35rem; font-size: 1.15rem; }
.feature p { color: var(--muted); margin: 0; font-size: .95rem; }
.counts { display: flex; flex-wrap: wrap; gap: 1rem 3rem; justify-content: center; padding: 1.25rem; text-align: center; }
.count { display: block; font: 600 2rem/1.1 var(--serif); }