/* ============================================================================
   scVision — paper website (islamlab.org/scvision)
   Nature-journal aesthetic: elegant serif display, quiet sans UI, coral accent.
   ========================================================================== */

:root{
  --ink:        #1b1e20;
  --ink-soft:   #3a4045;
  --muted:      #71777d;
  --faint:      #9aa0a6;
  --line:       #e9e5de;
  --line-soft:  #f0ede7;
  --paper:      #ffffff;
  --paper-2:    #faf8f4;   /* warm off-white section */
  --paper-3:    #f5f2ec;
  --coral:      #c8543f;   /* deep accent  */
  --coral-2:    #e07a5f;   /* mid accent   */
  --coral-tint: #fbeee9;   /* wash         */
  --blue:       #4f7290;
  --green:      #6f9159;
  --purple:     #8e6f96;
  --gold:       #b08636;
  --ink-hero:   #16181a;

  --serif: 'Spectral', Georgia, 'Times New Roman', serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  --maxw: 1080px;
  --textw: 730px;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20,20,22,.04), 0 8px 30px -14px rgba(20,20,22,.14);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top:78px; -webkit-text-size-adjust:100%; }
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--sans); font-size:17px; line-height:1.72;
  font-feature-settings:"kern" 1, "liga" 1;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
img{ max-width:100%; display:block; }
a{ color:var(--coral); text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset:2px; }
::selection{ background:var(--coral-tint); color:var(--coral); }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 28px; }
.prose{ max-width:var(--textw); }

/* ---------- Serif display ---------- */
h1,h2,h3,.serif{ font-family:var(--serif); font-weight:600; letter-spacing:-.01em; color:var(--ink); }
h2{ font-size:clamp(1.55rem,3.1vw,2.05rem); line-height:1.18; margin:0 0 .2em; }
h3{ font-size:1.16rem; line-height:1.3; margin:0 0 .35em; font-weight:600; }
p{ margin:0 0 1.05em; }

/* ---------- Nav ---------- */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.82); backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{ display:flex; align-items:center; height:62px; gap:22px; }
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--serif); font-weight:600; font-size:1.18rem; color:var(--ink); letter-spacing:-.01em; }
.brand:hover{ text-decoration:none; }
.brand .glyph{ width:22px; height:22px; border-radius:6px; background:
   radial-gradient(circle at 30% 30%, #f2c94c 0 2px, transparent 2px),
   radial-gradient(circle at 68% 55%, var(--coral-2) 0 2px, transparent 2px),
   radial-gradient(circle at 45% 74%, var(--blue) 0 1.6px, transparent 1.6px),
   linear-gradient(150deg,#2a3550,#1c2436); box-shadow:inset 0 0 0 1px rgba(255,255,255,.12); }
.brand b{ color:var(--coral); font-weight:600; }
.nav-links{ display:flex; gap:20px; margin-left:auto; align-items:center; font-family:var(--sans); font-size:.9rem; }
.nav-links a{ color:var(--ink-soft); }
.nav-links a:hover{ color:var(--coral); text-decoration:none; }
.nav-cta{ padding:7px 15px; border:1px solid var(--ink); border-radius:999px; color:var(--ink)!important; font-weight:500; }
.nav-cta:hover{ background:var(--ink); color:#fff!important; }
@media(max-width:720px){ .nav-links a:not(.nav-cta){ display:none; } }

/* ---------- Section frame ---------- */
section{ padding:70px 0; border-top:1px solid var(--line-soft); }
section.alt{ background:var(--paper-2); }
.eyebrow{ font-family:var(--sans); font-size:.76rem; font-weight:600; letter-spacing:.16em;
  text-transform:uppercase; color:var(--coral); margin:0 0 14px; display:flex; align-items:center; gap:10px; }
.eyebrow::before{ content:""; width:26px; height:2px; background:var(--coral); border-radius:2px; }
.lead{ font-family:var(--serif); font-size:1.28rem; line-height:1.6; color:var(--ink-soft); font-weight:400; }

/* ---------- Hero ---------- */
.hero{ padding:64px 0 54px; border-top:none;
  background:
    radial-gradient(1100px 340px at 78% -8%, rgba(224,122,95,.10), transparent 60%),
    radial-gradient(760px 300px at 8% 4%, rgba(79,114,144,.07), transparent 62%),
    var(--paper); }
.hero .kicker{ font-family:var(--sans); font-size:.8rem; font-weight:600; letter-spacing:.14em;
  text-transform:uppercase; color:var(--muted); margin-bottom:20px; }
.hero .kicker b{ color:var(--coral); }
.hero h1{ font-size:clamp(2.15rem,5.2vw,3.5rem); line-height:1.08; letter-spacing:-.02em; margin:0 0 .5em; max-width:15ch; }
.hero .tagline{ font-family:var(--serif); font-size:clamp(1.15rem,2.3vw,1.42rem); font-weight:400;
  color:var(--ink-soft); max-width:60ch; line-height:1.5; margin:0 0 30px; }
.hero .tagline b{ color:var(--coral); font-weight:600; }

.authors{ font-family:var(--sans); font-size:1.03rem; line-height:2; color:var(--ink); max-width:64ch; margin:0 0 8px; }
.authors .au{ white-space:nowrap; }
.authors sup{ color:var(--coral); font-size:.66em; font-weight:600; padding-left:1px; }
.authors .corr{ color:var(--coral); }
.affils{ font-size:.83rem; line-height:1.62; color:var(--muted); max-width:70ch; margin:8px 0 0; }
.affils sup{ color:var(--coral); }
.affils .corr-note{ display:block; margin-top:8px; color:var(--ink-soft); }
.affils .corr-note a{ font-weight:500; }

.btns{ display:flex; flex-wrap:wrap; gap:12px; margin-top:32px; }
.btn{ font-family:var(--sans); font-size:.95rem; font-weight:500; display:inline-flex; align-items:center; gap:9px;
  padding:11px 20px; border-radius:999px; border:1px solid var(--ink); color:var(--ink); background:transparent; transition:.16s; }
.btn:hover{ text-decoration:none; transform:translateY(-1px); }
.btn.primary{ background:var(--ink); color:#fff; border-color:var(--ink); }
.btn.primary:hover{ background:#000; }
.btn.coral{ background:var(--coral); border-color:var(--coral); color:#fff; }
.btn.coral:hover{ background:#b0472f; }
.btn svg{ width:16px; height:16px; }
.btn.ghost{ border-color:var(--line); color:var(--ink-soft); }
.btn.ghost:hover{ border-color:var(--ink); color:var(--ink); }
.btn .soon{ font-size:.7rem; color:var(--faint); font-weight:500; }

/* ---------- Stats ---------- */
.stats{ display:grid; grid-template-columns:repeat(5,1fr); gap:0;
  border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--paper); box-shadow:var(--shadow); }
.stat{ padding:26px 22px; border-right:1px solid var(--line-soft); }
.stat:last-child{ border-right:none; }
.stat .n{ font-family:var(--serif); font-size:1.95rem; font-weight:600; line-height:1; letter-spacing:-.01em; color:var(--coral); }
.stat .n.ink{ color:var(--ink); }
.stat .l{ font-family:var(--sans); font-size:.82rem; color:var(--muted); margin-top:9px; line-height:1.4; }
@media(max-width:860px){ .stats{ grid-template-columns:repeat(2,1fr); } .stat{ border-bottom:1px solid var(--line-soft); } }
@media(max-width:460px){ .stats{ grid-template-columns:1fr; } }

/* ---------- Figure ---------- */
figure.fig{ margin:0; }
.fig .frame{ border:1px solid var(--line); border-radius:var(--radius); background:var(--paper); padding:22px; box-shadow:var(--shadow); }
.fig figcaption{ font-family:var(--sans); font-size:.9rem; color:var(--muted); margin-top:16px; max-width:80ch; line-height:1.6; }
.fig figcaption b{ color:var(--ink); font-weight:600; }

/* ---------- How it works ---------- */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; margin-top:14px; }
.step{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:26px 24px; }
.step .idx{ font-family:var(--serif); font-size:.95rem; font-weight:600; color:var(--coral);
  display:inline-flex; width:30px; height:30px; align-items:center; justify-content:center;
  border:1px solid var(--coral); border-radius:50%; margin-bottom:15px; }
.step h3{ margin-bottom:.45em; }
.step p{ font-size:.96rem; color:var(--ink-soft); margin:0; line-height:1.62; }
.step p b{ color:var(--ink); }
@media(max-width:820px){ .steps{ grid-template-columns:1fr; } }

/* ---------- Findings ---------- */
.findings{ display:grid; grid-template-columns:1fr 1fr; gap:0 44px; margin-top:8px; }
.finding{ padding:24px 0; border-top:1px solid var(--line); }
.finding h3{ display:flex; align-items:baseline; gap:10px; }
.finding h3 .tag{ font-family:var(--sans); font-size:.72rem; font-weight:600; letter-spacing:.04em; text-transform:uppercase;
  color:var(--coral); background:var(--coral-tint); padding:3px 9px; border-radius:999px; }
.finding p{ font-size:.98rem; color:var(--ink-soft); margin:0; line-height:1.64; }
@media(max-width:820px){ .findings{ grid-template-columns:1fr; gap:0; } }

/* ---------- Abstract ---------- */
.abstract p{ font-family:var(--serif); font-size:1.12rem; line-height:1.74; color:var(--ink); }
.abstract p .first{ }
.dropcap::first-letter{ float:left; font-family:var(--serif); font-weight:600; font-size:3.4rem;
  line-height:.82; padding:6px 12px 0 0; color:var(--coral); }

/* ---------- Citation ---------- */
.cite-box{ position:relative; background:#1c2024; color:#e8eaec; border-radius:var(--radius);
  padding:22px 24px; overflow:auto; box-shadow:var(--shadow); }
.cite-box pre{ margin:0; font-family:var(--mono); font-size:.82rem; line-height:1.7; white-space:pre; color:#e8eaec; }
.cite-box .k{ color:#e0a08f; }
.cite-box .f{ color:#8fb3c9; }
.copy{ position:absolute; top:14px; right:14px; font-family:var(--sans); font-size:.76rem; font-weight:500;
  color:#cfd3d6; background:rgba(255,255,255,.09); border:1px solid rgba(255,255,255,.16);
  border-radius:7px; padding:6px 12px; cursor:pointer; transition:.15s; }
.copy:hover{ background:rgba(255,255,255,.16); color:#fff; }

/* ---------- Authors block ---------- */
.author-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:2px 44px; margin-top:6px; }
.author-row{ display:flex; align-items:baseline; gap:12px; padding:12px 0; border-top:1px solid var(--line-soft); }
.author-row .name{ font-family:var(--serif); font-size:1.08rem; font-weight:500; color:var(--ink); min-width:190px; }
.author-row .name .star{ color:var(--coral); }
.author-row .role{ font-family:var(--sans); font-size:.84rem; color:var(--muted); }
.author-row.pi .name{ color:var(--coral); }
@media(max-width:720px){ .author-grid{ grid-template-columns:1fr; } }

/* ---------- Footer ---------- */
footer{ background:var(--ink-hero); color:#cdd1d4; padding:56px 0 40px; border-top:none; }
footer .wrap{ display:flex; flex-wrap:wrap; gap:36px 60px; align-items:flex-start; justify-content:space-between; }
footer .lab{ max-width:40ch; }
footer .lab .brand2{ font-family:var(--serif); font-size:1.35rem; color:#fff; margin-bottom:10px; }
footer .lab .brand2 b{ color:var(--coral-2); }
footer p{ font-size:.9rem; color:#9aa0a5; line-height:1.6; margin:0 0 .7em; }
footer a{ color:#e6b2a3; }
footer .col h4{ font-family:var(--sans); font-size:.74rem; letter-spacing:.14em; text-transform:uppercase;
  color:#8a9096; margin:0 0 14px; font-weight:600; }
footer .col a{ display:block; color:#cdd1d4; font-size:.92rem; padding:4px 0; }
footer .col a:hover{ color:#fff; text-decoration:none; }
footer .fine{ width:100%; border-top:1px solid rgba(255,255,255,.1); margin-top:34px; padding-top:22px;
  font-size:.82rem; color:#7b8187; display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between; }

/* ---------- misc ---------- */
.divider-note{ font-family:var(--sans); font-size:.86rem; color:var(--faint); margin-top:26px; }
.kbd{ font-family:var(--mono); font-size:.85em; background:var(--paper-3); border:1px solid var(--line);
  border-radius:5px; padding:1px 6px; color:var(--ink-soft); }

/* ---------- Interactive method demo ---------- */
.demo{ margin-top:28px; border:1px solid var(--line); border-radius:var(--radius); background:var(--paper);
  box-shadow:var(--shadow); overflow:hidden; }
.demo-stages{ display:flex; flex-wrap:wrap; align-items:center; gap:8px 10px; padding:15px 22px;
  border-bottom:1px solid var(--line-soft); background:var(--paper-2); }
.demo-stages .dstage{ font-family:var(--sans); font-size:.76rem; font-weight:600; letter-spacing:.01em;
  color:var(--ink-soft); background:var(--paper); border:1px solid var(--line); border-radius:999px; padding:4px 12px; }
.demo-stages i{ color:var(--faint); font-style:normal; font-size:.9rem; }
.demo-grid{ display:grid; grid-template-columns:300px 1fr; }
.demo-controls{ padding:24px 24px; border-right:1px solid var(--line-soft); }
.dc-label{ font-family:var(--sans); font-size:.76rem; font-weight:600; letter-spacing:.06em; text-transform:uppercase;
  color:var(--muted); margin-bottom:11px; display:flex; align-items:center; gap:8px; }
.dc-illus{ font-weight:500; letter-spacing:.02em; text-transform:none; color:var(--coral);
  background:var(--coral-tint); border-radius:999px; padding:2px 8px; font-size:.66rem; }
.dc-val{ margin-left:auto; color:var(--coral); font-family:var(--mono); font-size:.8rem; }
.celltypes{ display:flex; flex-wrap:wrap; gap:8px; }
.ct{ font-family:var(--sans); font-size:.86rem; font-weight:500; color:var(--ink-soft); background:var(--paper);
  border:1px solid var(--line); border-radius:999px; padding:7px 14px; cursor:pointer; transition:.14s; }
.ct:hover{ border-color:var(--ink); color:var(--ink); }
.ct.active{ background:var(--ink); border-color:var(--ink); color:#fff; }
.drange{ -webkit-appearance:none; appearance:none; width:100%; height:4px; border-radius:999px;
  background:var(--line); outline:none; margin:2px 0 0; cursor:pointer; }
.drange::-webkit-slider-thumb{ -webkit-appearance:none; appearance:none; width:18px; height:18px; border-radius:50%;
  background:var(--coral); border:2px solid #fff; box-shadow:0 1px 3px rgba(0,0,0,.22); cursor:pointer; }
.drange::-moz-range-thumb{ width:16px; height:16px; border-radius:50%; background:var(--coral);
  border:2px solid #fff; cursor:pointer; }
.dbtns{ display:flex; flex-wrap:wrap; gap:10px; margin-top:22px; }
.dbtn{ font-family:var(--sans); font-size:.84rem; font-weight:500; color:var(--ink-soft); background:var(--paper);
  border:1px solid var(--line); border-radius:999px; padding:8px 15px; cursor:pointer; transition:.14s; }
.dbtn:hover{ border-color:var(--ink); color:var(--ink); }
.dbtn.primary{ background:var(--coral); border-color:var(--coral); color:#fff; }
.dbtn.primary:hover{ background:#b0472f; }
.dc-note{ font-family:var(--sans); font-size:.79rem; color:var(--muted); line-height:1.55; margin:20px 0 0; }
.demo-canvases{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; padding:24px; align-items:start; }
.dcv{ margin:0; }
.dcv canvas{ width:100%; aspect-ratio:1/1; border-radius:8px; border:1px solid var(--line);
  background:#2a1a3a; display:block; }
.dcv figcaption{ font-family:var(--sans); font-size:.8rem; font-weight:600; color:var(--ink); margin-top:10px;
  display:flex; align-items:baseline; gap:8px; }
.dcv figcaption span{ font-weight:500; color:var(--muted); font-size:.73rem; }
@media(max-width:820px){ .demo-grid{ grid-template-columns:1fr; }
  .demo-controls{ border-right:none; border-bottom:1px solid var(--line-soft); } }
@media(max-width:560px){ .demo-canvases{ grid-template-columns:1fr; max-width:280px; margin:0 auto; } }

/* ---------- Results explorer (#benchmarks) ---------- */
.rex{ margin-top:26px; border:1px solid var(--line); border-radius:var(--radius); background:var(--paper); box-shadow:var(--shadow); overflow:hidden; }
.rex-tabs{ display:flex; flex-wrap:wrap; gap:2px; padding:8px 8px 0; background:var(--paper-2); border-bottom:1px solid var(--line-soft); }
.rtab{ font-family:var(--sans); font-size:.85rem; font-weight:500; color:var(--muted); background:transparent; border:none; border-bottom:2px solid transparent; padding:11px 15px; cursor:pointer; transition:.14s; }
.rtab:hover{ color:var(--ink); }
.rtab.active{ color:var(--coral); border-bottom-color:var(--coral); font-weight:600; }
.rex-body{ padding:24px 26px 26px; }
.rex-head{ margin-bottom:14px; }
.rex-title{ font-family:var(--serif); font-size:1.2rem; font-weight:600; color:var(--ink); }
.rex-sub{ font-family:var(--sans); font-size:.85rem; color:var(--muted); margin-top:2px; }
.rex-controls{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:18px; }
.rex-controls:empty{ display:none; }
.rseg{ font-family:var(--sans); font-size:.82rem; font-weight:500; color:var(--ink-soft); background:var(--paper); border:1px solid var(--line); border-radius:999px; padding:6px 14px; cursor:pointer; transition:.14s; }
.rseg:hover{ border-color:var(--ink); }
.rseg.on{ background:var(--ink); border-color:var(--ink); color:#fff; }
.rex-chart{ width:100%; }
.rex-chart svg{ display:block; }
.rex-legend{ display:flex; flex-wrap:wrap; gap:9px 18px; margin-top:14px; }
.rex-legend:empty{ display:none; }
.rl{ font-family:var(--sans); font-size:.82rem; color:var(--ink-soft); display:inline-flex; align-items:center; gap:7px; }
.rl i{ width:12px; height:12px; border-radius:3px; display:inline-block; }
.rex-tissues{ display:flex; flex-wrap:wrap; align-items:center; gap:7px; }
.rex-tissues span{ font-family:var(--sans); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color:var(--faint); margin-right:2px; }
.rchip{ font-family:var(--sans); font-size:.77rem; color:var(--ink-soft); background:var(--paper); border:1px solid var(--line); border-radius:999px; padding:5px 11px; cursor:pointer; transition:.14s; text-transform:capitalize; }
.rchip:hover{ border-color:var(--ink); }
.rchip.on{ background:var(--coral); border-color:var(--coral); color:#fff; }
.rex-note{ font-family:var(--sans); font-size:.83rem; color:var(--muted); line-height:1.55; margin:16px 0 0; max-width:78ch; }
.rex-err{ color:var(--muted); font-size:.9rem; }

/* ---------- scImage gallery (#gallery) ---------- */
.galwrap{ margin-top:26px; display:grid; grid-template-columns:1fr; gap:22px; }
.gal-viewer{ border:1px solid var(--line); border-radius:var(--radius); background:var(--paper); box-shadow:var(--shadow); padding:22px 24px; }
.gal-meta{ display:flex; flex-wrap:wrap; gap:28px; margin-bottom:16px; }
.gal-meta .gal-k{ display:block; font-family:var(--sans); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color:var(--faint); margin-bottom:3px; }
.gal-meta .gal-v{ font-family:var(--serif); font-size:1.05rem; color:var(--ink); }
.gal-ctl{ display:flex; align-items:center; gap:16px; flex-wrap:wrap; margin-top:20px; }
.gal-ctl .drange{ max-width:220px; }
.gal-grid{ display:flex; flex-direction:column; gap:18px; }
.ghead{ display:flex; align-items:baseline; gap:10px; margin-bottom:9px; }
.ghead b{ font-family:var(--serif); font-size:1rem; font-weight:600; color:var(--ink); }
.ghead span{ font-family:var(--sans); font-size:.8rem; color:var(--muted); }
.grow{ display:flex; flex-wrap:wrap; gap:8px; }
.gthumb{ width:56px; height:56px; border-radius:6px; border:1px solid var(--line); background:#2a1a3a; cursor:pointer; transition:.12s; }
.gthumb:hover{ transform:translateY(-2px); border-color:var(--coral-2); }
.gthumb.sel{ border-color:var(--coral); box-shadow:0 0 0 2px var(--coral-tint); }
@media(min-width:900px){ .galwrap{ grid-template-columns:minmax(0,1.02fr) minmax(0,1fr); align-items:start; } }