/* VennDiagram.net — styles.css */

@font-face{
  font-family:"Bricolage Grotesque";
  src:url("fonts/bricolage-grotesque-latin-wght-normal.woff2") format("woff2") tech("variations"),
      url("fonts/bricolage-grotesque-latin-wght-normal.woff2") format("woff2-variations");
  font-weight:200 800;
  font-style:normal;
  font-display:swap;
}

:root{
  --ink:#17203A;
  --ink-soft:#4B5570;
  --paper:#F5F7FB;
  --grid:#E8EDF7;
  --line:#DCE2F0;
  --card:#FFFFFF;
  --blue:#3E6FE1;
  --rose:#E4527B;
  --amber:#EFAE3A;
  --mix:#7A4BD6;
  --mix-deep:#5B32B4;
  --mix-soft:#F1EBFC;
  --radius:14px;
  --shadow:0 1px 2px rgba(23,32,58,.05), 0 10px 30px -12px rgba(23,32,58,.14);
  --font-display:"Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono:ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size:28px 28px;
  font-size:16.5px;
  line-height:1.6;
}
img,svg{max-width:100%;height:auto}
a{color:var(--mix-deep)}
a:hover{color:var(--mix)}
:focus-visible{outline:3px solid var(--mix);outline-offset:2px;border-radius:4px}

.skip-link{
  position:absolute;left:-9999px;top:0;
  background:var(--mix);color:#fff;font-weight:700;
  padding:10px 16px;border-radius:0 0 10px 0;z-index:10;text-decoration:none;
}
.skip-link:focus{left:0}

.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{padding:18px 0}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.wordmark{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--font-display);font-weight:800;font-size:1.12rem;letter-spacing:-.01em}
.wordmark svg{display:block;flex:none}
.site-nav{display:flex;gap:22px;font-size:.95rem}
.site-nav a{text-decoration:none;color:var(--ink-soft);font-weight:600;padding:8px 2px}
.site-nav a:hover{color:var(--mix-deep)}
@media (max-width:560px){
  .site-header .wrap{flex-wrap:wrap}
  .site-nav{width:100%;justify-content:flex-start;gap:4px 16px;font-size:.88rem;flex-wrap:wrap}
}

/* ---------- Hero ---------- */
.hero{padding:34px 0 26px;text-align:center}
.eyebrow{font-family:var(--font-mono);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--mix-deep);background:var(--mix-soft);border:1px solid #E2D7F8;border-radius:999px;display:inline-block;padding:6px 14px}
.hero h1{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(2.3rem, 5.6vw, 3.7rem);
  line-height:1.06;
  letter-spacing:-.02em;
  margin:.55em auto .3em;
  max-width:16ch;
}
.hero h1 .u{
  background-image:linear-gradient(90deg, var(--blue), var(--mix) 50%, var(--rose));
  background-repeat:no-repeat;
  background-size:100% .14em;
  background-position:0 96%;
  padding-bottom:.06em;
}
.hero .lede{max-width:620px;margin:0 auto;color:var(--ink-soft);font-size:1.1rem}
.badges{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:20px 0 0;padding:0;list-style:none;font-size:.88rem}
.badges li{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:5px 13px;color:var(--ink-soft);font-weight:600}
.badges li::before{content:"✓";color:var(--mix);font-weight:800;margin-right:7px}

/* ---------- App ---------- */
.app-section{padding:22px 0 10px}
.noscript-note{
  display:block;background:#FFF6E5;border:1px solid #F0D9A8;border-radius:10px;
  padding:12px 16px;margin:0 0 14px;color:#6B5518;font-size:.95rem;
}
.app{
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(300px,1fr);
  gap:18px;
  align-items:start;
}
@media (max-width:880px){.app{grid-template-columns:1fr}}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.canvas-panel{padding:14px;margin:0}
#svgHost{aspect-ratio:800/570}
.canvas-panel svg{display:block;width:100%;height:auto;border-radius:8px}
.controls{padding:18px 18px 20px}
.controls h2{font-family:var(--font-display);font-size:1.05rem;margin:0 0 12px;font-weight:800;letter-spacing:-.01em}
.field{margin-bottom:14px}
.field-label{display:block;font-size:.82rem;font-weight:700;color:var(--ink-soft);margin-bottom:5px;letter-spacing:.02em}
.field-label .light{font-weight:400}
.field input[type=text],.field textarea{
  width:100%;font-family:inherit;font-size:16px;color:var(--ink);
  border:1.5px solid var(--line);border-radius:9px;padding:9px 12px;background:#FCFDFF;
}
.field textarea{resize:vertical;min-height:64px;line-height:1.45}
.field input:focus,.field textarea:focus{border-color:var(--mix);outline:none;box-shadow:0 0 0 3px rgba(122,75,214,.15)}
.seg{display:inline-flex;border:1.5px solid var(--line);border-radius:10px;overflow:hidden;background:#FCFDFF}
.seg button{font-family:inherit;font-size:.95rem;font-weight:700;border:0;background:transparent;color:var(--ink-soft);padding:11px 18px;cursor:pointer;min-height:44px;touch-action:manipulation}
.seg button[aria-pressed=true]{background:var(--mix);color:#fff}
.set-row{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.set-row input[type=color]{
  inline-size:44px;block-size:44px;padding:4px;border:1.5px solid var(--line);
  border-radius:9px;background:#FCFDFF;cursor:pointer;flex:none;
}
.set-row input[type=text]{flex:1;min-width:0}
.region-label{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.region-label .notation{font-family:var(--font-mono);font-size:.72rem;color:var(--mix-deep);background:var(--mix-soft);border-radius:5px;padding:1px 6px;white-space:nowrap}
.actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.btn{
  font-family:inherit;font-size:.95rem;font-weight:700;border-radius:10px;cursor:pointer;
  padding:12px 18px;border:1.5px solid transparent;min-height:44px;touch-action:manipulation;
}
.btn-primary{background:var(--mix);color:#fff}
.btn-primary:hover{background:var(--mix-deep)}
.btn-secondary{background:#fff;color:var(--mix-deep);border-color:var(--line)}
.btn-secondary:hover{border-color:var(--mix);color:var(--mix)}
.btn-ghost{background:transparent;color:var(--ink-soft);border-color:transparent}
.btn-ghost:hover{color:var(--ink)}
.check{display:flex;align-items:center;gap:8px;font-size:.86rem;color:var(--ink-soft);margin-top:12px;font-weight:600;min-height:24px}
.check input{inline-size:18px;block-size:18px;accent-color:var(--mix)}

/* ---------- Content sections ---------- */
.section{padding:52px 0}
.section-head{max-width:660px;margin:0 auto 30px;text-align:center}
.section-head .eyebrow{margin-bottom:12px}
.section h2{font-family:var(--font-display);font-weight:800;font-size:clamp(1.55rem,3.4vw,2.15rem);letter-spacing:-.02em;line-height:1.15;margin:.5em 0 .35em}
.section-head p{color:var(--ink-soft);margin:0}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;counter-reset:step}
@media (max-width:760px){.steps{grid-template-columns:1fr}}
.steps li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px;counter-increment:step}
.steps li::before{
  content:counter(step);
  font-family:var(--font-mono);font-weight:700;font-size:.95rem;
  display:inline-flex;align-items:center;justify-content:center;
  inline-size:34px;block-size:34px;border-radius:50%;color:#fff;margin-bottom:12px;
}
.steps li:nth-child(1)::before{background:var(--blue)}
.steps li:nth-child(2)::before{background:var(--rose)}
.steps li:nth-child(3)::before{background:var(--mix)}
.steps h3{font-family:var(--font-display);font-size:1.08rem;margin:0 0 6px;font-weight:800}
.steps p{margin:0;color:var(--ink-soft);font-size:.95rem}

.features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0;padding:0;list-style:none}
@media (max-width:860px){.features{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.features{grid-template-columns:1fr}}
.features li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.features h3{font-family:var(--font-display);font-weight:800;font-size:1.02rem;margin:0 0 6px}
.features p{margin:0;color:var(--ink-soft);font-size:.93rem}

.prose{max-width:720px;margin:0 auto;color:var(--ink)}
.prose p{margin:0 0 1em;color:var(--ink-soft)}
.prose strong{color:var(--ink)}
.prose h3{font-family:var(--font-display);font-weight:800;font-size:1.15rem;margin:1.6em 0 .4em}

.faq{max-width:720px;margin:0 auto}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:0 18px}
.faq summary{cursor:pointer;font-weight:700;font-family:var(--font-display);font-size:1rem;padding:15px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-mono);color:var(--mix);font-size:1.25rem;font-weight:600;flex:none}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0 0 16px;color:var(--ink-soft)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#C6CCE0;margin-top:60px;padding:34px 0}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;font-size:.88rem}
.site-footer .wordmark{color:#fff}
.site-footer a{color:#DDE2F2}
.site-footer p{margin:0}