/* phyloseek — v3 aesthetic redesign: paper & forest, refined */

:root {
  --paper: #f6f3ea;
  --paper-2: #efeadd;
  --cream: #fffdf7;
  --ink: #14211a;
  --ink-2: #3d4a42;
  --ink-3: #77816f;
  --line: #ddd6c6;
  --line-light: #e6e1d4;
  --forest: #1a7f4b;
  --forest-deep: #0d3b26;
  --forest-glow: #15683e;
  --amber: #b45309;
  --amber-light: #f5e7d3;
  --teal: #0f766e;
  --shadow-sm: 0 1px 3px rgba(20, 33, 26, .06);
  --shadow-md: 0 4px 14px rgba(20, 33, 26, .08);
  --shadow-lg: 0 10px 40px -12px rgba(20, 33, 26, .15);
  --radius: 12px;
  --radius-lg: 14px;
  --radius-full: 99px;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.mono, code { font-family: var(--mono); }
a { color: var(--forest); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: rgba(26, 127, 75, .18); color: var(--ink); }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 2rem;
  padding: .75rem 2rem;
  background: rgba(246, 243, 234, .88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s;
}
@supports (background: color-mix(in srgb, red, transparent)) {
  .nav { background: color-mix(in srgb, var(--paper) 88%, transparent); }
}
.nav.scrolled { box-shadow: 0 1px 8px rgba(20, 33, 26, .06); }

.brand {
  display: flex; align-items: center; gap: .55rem;
  font-family: var(--serif); font-weight: 600; font-size: 1.3rem;
  color: var(--ink);
  transition: opacity .2s;
}
.brand:hover { text-decoration: none; opacity: .82; }
.brand-mark { width: 26px; height: 26px; color: var(--forest); }

.nav-links { display: flex; gap: 1.4rem; margin-left: auto; }
.nav-links a {
  color: var(--ink-2); font-size: .88rem; font-weight: 500;
  position: relative;
  transition: color .2s;
}
.nav-links a::after {
  content: ""; position: absolute; bottom: -3px; left: 0;
  width: 0; height: 1.5px; background: var(--forest);
  transition: width .25s ease;
}
.nav-links a:hover { color: var(--forest); text-decoration: none; }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--forest); }
.nav-links a.active::after { width: 100%; }

.nav-cta {
  font-size: .85rem; font-weight: 600; color: var(--paper);
  background: var(--forest-deep); border-radius: var(--radius-full);
  padding: .45rem 1.1rem;
  transition: background .2s, transform .15s, box-shadow .2s;
  flex-shrink: 0;
}
.nav-cta:hover { background: var(--forest-glow); text-decoration: none;
  box-shadow: 0 2px 10px rgba(21, 104, 62, .3); }

/* taxonomy view switcher */
.tax-view-wrap {
  display: flex; align-items: center; gap: .5rem;
  margin-left: 1rem;
}
.tax-view-lbl {
  font-size: .68rem; color: var(--ink-3); text-transform: uppercase;
  letter-spacing: .06em;
}
.tax-pills {
  display: inline-flex; background: rgba(230, 226, 215, 0.6);
  border: 1px solid var(--line); border-radius: var(--radius-full);
  padding: 2px; gap: 2px;
}
.tax-pill {
  font-family: var(--mono); font-size: .68rem; font-weight: 500;
  border: 0; background: transparent; color: var(--ink-2);
  padding: .2rem .55rem; border-radius: var(--radius-full);
  cursor: pointer; transition: all .15s ease;
}
.tax-pill:hover { color: var(--forest-deep); }
.tax-pill.on {
  background: var(--forest-deep); color: #f4f8f4;
  box-shadow: 0 1px 3px rgba(21, 104, 62, 0.25);
}

/* tip info & psid badges */
.tip-info-box {
  margin-top: .6rem; display: flex; flex-direction: column; gap: .35rem;
}
.tip-pill-item {
  display: flex; align-items: center; gap: .5rem;
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 6px; padding: .25rem .5rem; font-size: .75rem;
}
.psid-badge {
  font-family: var(--mono); font-size: .66rem; font-weight: 600;
  color: var(--forest-deep); background: #e1edd8;
  padding: .1rem .4rem; border-radius: 4px; letter-spacing: .04em;
}
.tip-name-span {
  font-family: var(--mono); font-size: .75rem; color: var(--ink);
}
.tip-tax-span {
  font-size: .7rem; color: var(--ink-3); margin-left: auto;
}

/* hamburger */
.nav-toggle {
  display: none; flex-direction: column; gap: 4px;
  background: none; border: none; cursor: pointer;
  padding: 4px; margin-left: auto;
}
.nav-toggle span {
  display: block; width: 20px; height: 2px;
  background: var(--ink-2); border-radius: 2px;
  transition: transform .25s ease, opacity .2s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem;
  max-width: 1280px; margin: 0 auto;
  padding: 4.5rem 2rem 4rem;
  align-items: center;
  animation: fadeUp .7s ease-out;
}

.eyebrow {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--forest); margin-bottom: 1.4rem;
}
.hero h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.6rem, 5.2vw, 4.2rem);
  line-height: 1.02; letter-spacing: -.02em;
}
.hero h1 em { font-style: italic; color: var(--forest); }
.lede {
  margin-top: 1.6rem; max-width: 44ch;
  color: var(--ink-2); font-size: 1.05rem;
  line-height: 1.65;
}
.hero-stats {
  display: flex; gap: 2.4rem; margin-top: 2.4rem;
  border-top: 1px solid var(--line); padding-top: 1.4rem;
}
.hero-stats b {
  display: block; font-family: var(--serif); font-weight: 500;
  font-size: 1.7rem; color: var(--forest-deep);
}
.hero-stats span {
  font-family: var(--mono); font-size: .68rem;
  letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3);
}

.hero-forest {
  position: relative; border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(1200px 400px at 70% -10%, #e7ead8 0%, transparent 55%),
    var(--paper-2);
  padding: 1rem; overflow: hidden;
  transition: box-shadow .3s;
}
.hero-forest:hover { box-shadow: var(--shadow-md); }
.hero-forest::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  opacity: .5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.13 0 0 0 0 0.09 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero-controls {
  position: absolute; top: .9rem; right: .9rem; left: .9rem;
  display: flex; justify-content: space-between; align-items: center;
  z-index: 2; pointer-events: auto;
}
.hero-pills {
  display: inline-flex; background: rgba(246, 244, 238, 0.85);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line); border-radius: var(--radius-full);
  padding: 3px; gap: 2px; box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}
.hero-pill {
  font-family: var(--mono); font-size: .7rem; font-weight: 500;
  border: 0; background: transparent; color: var(--ink-2);
  padding: .25rem .65rem; border-radius: var(--radius-full);
  cursor: pointer; transition: all .15s ease;
}
.hero-pill:hover { color: var(--forest-deep); }
.hero-pill.on {
  background: var(--forest-deep); color: #f4f8f4;
  box-shadow: 0 1px 3px rgba(21, 104, 62, 0.25);
}
.hero-select {
  font-family: var(--mono); font-size: .72rem; color: var(--forest-deep);
  background: rgba(246, 244, 238, 0.85); backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line); border-radius: 8px;
  padding: .28rem .6rem; cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
  transition: border-color .15s, box-shadow .15s;
}
.hero-select:focus {
  outline: none; border-color: var(--forest);
  box-shadow: 0 0 0 2px rgba(26,127,75,0.15);
}

#forest { width: 100%; height: auto; display: block; border-radius: 8px; }
.forest-caption {
  position: absolute; bottom: .8rem; left: 1.2rem;
  font-size: .72rem; color: var(--ink-3); letter-spacing: .05em;
  background: rgba(246, 244, 238, 0.7); backdrop-filter: blur(4px);
  padding: 2px 6px; border-radius: 4px;
}

/* ---------- sections ---------- */
.section {
  max-width: 1280px; margin: 0 auto;
  padding: 4rem 2rem 2.5rem;
}

.section h2 {
  font-family: var(--serif); font-weight: 400; font-size: 2rem;
  letter-spacing: -.01em; margin-bottom: .9rem;
  display: flex; align-items: baseline; gap: .9rem;
}
.sec-no {
  font-family: var(--mono); font-size: .85rem; color: var(--forest);
  border: 1px solid var(--line); border-radius: 6px;
  padding: .1rem .5rem;
  transition: background .2s, border-color .2s;
}
.section:hover .sec-no { border-color: var(--forest); background: rgba(26,127,75,.05); }
.section-lede { color: var(--ink-2); max-width: 64ch; margin-bottom: 1.8rem; }

/* set cards */
.set-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.set-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.2rem 1.3rem; background: var(--cream);
  transition: transform .2s ease, box-shadow .25s ease, border-color .2s;
}
.set-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--forest);
}
.set-card h3 { font-family: var(--mono); font-size: 1rem; font-weight: 500; }
.set-card .badge {
  display: inline-block; font-family: var(--mono); font-size: .65rem;
  padding: .15rem .5rem; border-radius: var(--radius-full); margin-top: .4rem;
  letter-spacing: .05em; text-transform: uppercase;
}
.badge-lsd2 { background: #e4efd9; color: var(--forest-deep); }
.badge-mcmc { background: var(--amber-light); color: var(--amber); }
.set-card .num { font-family: var(--serif); font-size: 1.9rem; margin-top: .7rem; }
.set-card .lbl { font-family: var(--mono); font-size: .66rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }
.set-card .desc { font-size: .85rem; color: var(--ink-2); margin-top: .6rem; line-height: 1.5; }

/* panels (explorer + ages) */
.panel {
  display: grid; grid-template-columns: 330px 1fr; gap: 1.4rem;
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--cream); padding: 1.4rem;
  transition: box-shadow .3s;
}
.panel:hover { box-shadow: var(--shadow-sm); }

.ctl-label {
  display: block; font-family: var(--mono); font-size: .68rem;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink-3); margin: .9rem 0 .4rem;
}
.chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.chips-scroll { max-height: 132px; overflow-y: auto; padding-right: .3rem;
  scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
.chip {
  font-family: var(--mono); font-size: .74rem;
  border: 1px solid var(--line); border-radius: var(--radius-full);
  padding: .28rem .7rem; cursor: pointer; color: var(--ink-2);
  background: transparent; transition: all .15s;
}
.chip:hover { border-color: var(--forest); color: var(--forest); background: rgba(26,127,75,.04); }
.chip.on { background: var(--forest-deep); border-color: var(--forest-deep); color: #e9f3ec; }
.chip.on:hover { background: var(--forest-glow); border-color: var(--forest-glow); }
.chip .cnt { opacity: .55; font-size: .65rem; }

.ctl-row { display: flex; align-items: center; gap: .8rem; margin-top: 1rem; font-size: .85rem; color: var(--ink-2); }
.ctl-row input[type=range] { flex: 1; accent-color: var(--forest); cursor: pointer; }
.ctl-row input[type=number] {
  width: 4.5rem; border: 1px solid var(--line); border-radius: 8px;
  padding: .3rem .5rem; background: var(--paper); font-size: .8rem;
  transition: border-color .2s;
}
.ctl-row input[type=number]:focus { outline: none; border-color: var(--forest); box-shadow: 0 0 0 2px rgba(26,127,75,.15); }
.ctl-actions { margin-top: 1.3rem; }

.btn {
  font-family: var(--sans); font-weight: 600; font-size: .85rem;
  background: var(--forest-deep); color: #eef4ef;
  border: 0; border-radius: 9px; padding: .6rem 1.2rem;
  cursor: pointer; transition: background .2s, transform .1s, box-shadow .2s;
}
.btn:hover { background: var(--forest-glow); box-shadow: 0 2px 8px rgba(21, 104, 62, .25); }
.btn:active { transform: scale(.97); }
.btn-ghost { background: transparent; color: var(--forest-deep); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--forest); color: var(--forest); background: rgba(26,127,75,.04); box-shadow: none; }
.btn:disabled { opacity: .45; cursor: wait; }

.stat-line {
  margin-top: 1.1rem; font-size: .72rem; color: var(--ink-3);
  border-top: 1px dashed var(--line-light); padding-top: .8rem;
  word-break: break-word;
}

.canvas-wrap {
  min-height: 420px; border-radius: 10px;
  background: var(--paper); border: 1px solid var(--line);
  position: relative; overflow: hidden;
}
.canvas-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.canvas-wrap.loading::before {
  content: "loading...";
  position: absolute; inset: 0; display: flex;
  align-items: center; justify-content: center;
  font-family: var(--mono); font-size: .75rem;
  color: var(--ink-3); letter-spacing: .06em;
  animation: pulse 1.6s infinite;
}

.text-input {
  width: 100%; border: 1px solid var(--line); border-radius: 9px;
  background: var(--paper); padding: .55rem .8rem; font-size: .82rem;
  transition: border-color .2s, box-shadow .2s;
}
.text-input:focus { outline: none; border-color: var(--forest); box-shadow: 0 0 0 2px rgba(26,127,75,.15); }

/* ---------- data ---------- */
.files { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--cream); }
.file-row {
  display: grid; grid-template-columns: 1fr auto auto; gap: 1rem;
  align-items: center; padding: .7rem 1.1rem;
  border-bottom: 1px solid var(--line); font-size: .86rem;
  transition: background .15s;
}
.file-row:last-child { border-bottom: 0; }
.file-row:hover { background: var(--paper); }
.file-row .fname { font-family: var(--mono); font-size: .8rem; }
.file-row .fsize { font-family: var(--mono); font-size: .72rem; color: var(--ink-3); }
.file-row a.fget {
  font-family: var(--mono); font-size: .7rem; color: var(--forest);
  border: 1px solid var(--line); border-radius: 6px; padding: .18rem .6rem;
  transition: border-color .2s, background .2s;
}
.file-row a.fget:hover { border-color: var(--forest); background: rgba(26,127,75,.04); text-decoration: none; }
.file-row.fhead { background: var(--paper-2); font-family: var(--mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); }
.fine { font-size: .8rem; color: var(--ink-3); margin-top: .8rem; }
.fine a { color: var(--forest); text-decoration: underline 1px var(--line); text-underline-offset: 2px; }

/* ---------- api ---------- */
.api-table { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--cream); }
.api-row {
  display: grid; grid-template-columns: minmax(280px, 1.1fr) 1fr; gap: 1rem;
  padding: .75rem 1.1rem; border-bottom: 1px solid var(--line);
  align-items: baseline; transition: background .15s;
}
.api-row:last-child { border-bottom: 0; }
.api-row:hover { background: var(--paper); }
.api-row code { font-size: .78rem; color: var(--forest-deep); cursor: copy; }
.api-row code:hover { color: var(--forest); }
.api-row span { font-size: .82rem; color: var(--ink-2); }

/* ---------- footer ---------- */
.footer {
  max-width: 1280px; margin: 5rem auto 0; padding: 2rem;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 2rem;
  font-size: .85rem; color: var(--ink-2);
}
.footer-meta { font-size: .72rem; color: var(--ink-3); }

/* ---------- animations ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .6; }
}

/* ---------- responsive ---------- */
/* responsive */
@media (max-width: 940px) {
  .hero { grid-template-columns: 1fr; padding-top: 3rem; }
  .panel { grid-template-columns: 1fr; }
  .nav-links {
    display: flex; flex-direction: column; gap: 0;
    position: fixed; top: 57px; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: .5rem 0; transform: translateY(-110%); opacity: 0;
    transition: transform .3s ease, opacity .25s ease;
    pointer-events: none;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: .7rem 2rem; font-size: 1rem; }
  .nav-links a::after { display: none; }
  .nav-toggle { display: flex; }
  .hero-stats { flex-wrap: wrap; gap: 1.4rem; }
  .section { padding: 3rem 1.5rem 1.5rem; }
  .hero { padding: 3rem 1.5rem 2.5rem; }
  .nav { padding: .75rem 1.2rem; }
}

@media (max-width: 540px) {
  .set-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1rem; }
  .hero h1 { font-size: clamp(2rem, 7vw, 2.6rem); }
  .api-row { grid-template-columns: 1fr; gap: .3rem; }
  .footer { flex-direction: column; gap: .5rem; }
}