/* =========================================================
   Adesion — design system
   Theme: industrial/engineering "workflow bonding" motif.
   Slab-serif display (Roboto Slab) + Inter body, brass accent
   on a charcoal-blue ground. Dark is default; light is a
   proper second theme, not an inverted afterthought.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Roboto+Slab:wght@400;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  /* ---- dark (default) ---- */
  --bg: #10151F;
  --bg-raised: #171E2C;
  --bg-inset: #0B0F17;
  --line: #2A3345;
  --line-soft: #1E2634;
  --text: #ECE8DE;
  --text-dim: #9BA3B4;
  --text-faint: #6B7386;
  --brass: #C9873F;
  --brass-strong: #E0A05C;
  --brass-ink: #1A1206;
  --weld-green: #6E9E7B;
  --weld-red: #C96A5A;
  --focus: #E0A05C;

  --radius-s: 3px;
  --radius-m: 4px;
  --shadow-panel: 0 1px 0 rgba(0,0,0,.4);

  --font-display: 'Roboto Slab', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;

  --container: 1120px;
  --gutter: 24px;
}

html[data-theme="light"]{
  --bg: #F4F1E9;
  --bg-raised: #FFFFFF;
  --bg-inset: #EAE5D8;
  --line: #D9D2C0;
  --line-soft: #E5DFCF;
  --text: #191510;
  --text-dim: #55503E;
  --text-faint: #8A836E;
  --brass: #A8642A;
  --brass-strong: #8A4F1F;
  --brass-ink: #FBF3E6;
  --weld-green: #3F7A50;
  --weld-red: #A8402F;
  --focus: #8A4F1F;
  --shadow-panel: 0 1px 0 rgba(0,0,0,.06);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background .2s ease, color .2s ease;
}

img{ max-width:100%; display:block; }
a{ color: inherit; }
a:not(.btn){ color: var(--brass); text-decoration: none; border-bottom: 1px solid transparent; }
a:not(.btn):hover{ border-bottom-color: currentColor; }

:focus-visible{
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}
h1{ font-size: clamp(2.1rem, 1.6rem + 2.2vw, 3.4rem); }
h2{ font-size: clamp(1.6rem, 1.35rem + 1.2vw, 2.3rem); }
h3{ font-size: 1.25rem; }
h4{ font-size: 1.05rem; }
p{ margin: 0 0 1em; color: var(--text-dim); max-width: 62ch; }
p.lede{ color: var(--text); font-size: 1.15rem; }

.container{ max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
section{ padding: 88px 0; border-bottom: 1px solid var(--line-soft); }
section:last-of-type{ border-bottom: none; }
.section-tight{ padding: 56px 0; }

/* ---------------- Skip link ---------------- */
.skip-link{
  position:absolute; left:-999px; top:0; background: var(--brass); color: var(--brass-ink);
  padding: 10px 16px; z-index: 200; font-weight:600;
}
.skip-link:focus{ left: 12px; top: 12px; }

/* ---------------- Header / nav ---------------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-soft);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding: 16px var(--gutter); max-width: var(--container); margin: 0 auto;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-family: var(--font-display); font-weight:700; font-size:1.15rem;
  border-bottom: none;
}
.brand:hover{ border-bottom: none; }
.brand-mark{ width: 26px; height: 26px; flex: none; }
.nav-links{ display:flex; gap: 28px; list-style:none; margin:0; padding:0; }
.nav-links a{ color: var(--text-dim); font-weight:500; font-size:.95rem; border-bottom:none; }
.nav-links a:hover, .nav-links a[aria-current="page"]{ color: var(--text); }
.nav-links a[aria-current="page"]{ position:relative; }
.nav-links a[aria-current="page"]::after{
  content:""; position:absolute; left:0; right:0; bottom:-10px; height:2px; background: var(--brass);
}
.nav-right{ display:flex; align-items:center; gap:14px; }
.nav-toggle{
  display:none; background:none; border: 1px solid var(--line); color: var(--text);
  width:40px; height:40px; border-radius: var(--radius-s); cursor:pointer;
}
.theme-toggle{
  background: var(--bg-raised); border: 1px solid var(--line); color: var(--text);
  width: 38px; height: 38px; border-radius: var(--radius-s); cursor:pointer;
  display:flex; align-items:center; justify-content:center;
}
.theme-toggle svg{ width:18px; height:18px; }
.theme-toggle .icon-sun{ display:none; }
html[data-theme="light"] .theme-toggle .icon-moon{ display:none; }
html[data-theme="light"] .theme-toggle .icon-sun{ display:block; }

@media (max-width: 860px){
  .nav-links{
    position: fixed; inset: 65px 0 0 0; background: var(--bg);
    flex-direction: column; gap:0; padding: 10px 0; transform: translateY(-8px);
    opacity:0; pointer-events:none; transition: opacity .15s ease, transform .15s ease;
    border-top: 1px solid var(--line-soft);
  }
  .nav-links.is-open{ opacity:1; pointer-events:auto; transform: translateY(0); }
  .nav-links li{ border-bottom: 1px solid var(--line-soft); }
  .nav-links a{ display:block; padding: 16px var(--gutter); }
  .nav-toggle{ display:flex; align-items:center; justify-content:center; }
}

/* ---------------- Buttons ---------------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 12px 22px; font-family: var(--font-body); font-weight:600; font-size:.95rem;
  border-radius: var(--radius-s); border: 1px solid transparent; cursor:pointer;
  text-decoration:none; line-height:1;
}
.btn-primary{ background: var(--brass); color: var(--brass-ink); }
.btn-primary:hover{ background: var(--brass-strong); }
.btn-ghost{ background: transparent; border-color: var(--line); color: var(--text); }
.btn-ghost:hover{ border-color: var(--text-faint); }
.btn-block{ width:100%; }
.btn-sm{ padding: 9px 16px; font-size:.85rem; }

/* ---------------- Hero ---------------- */
.hero{ padding: 76px 0 96px; }
.hero-grid{ display:grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items:center; }
.hero-eyebrow{ color: var(--text-faint); font-size: .92rem; margin-bottom: 14px; }
.hero-actions{ display:flex; gap:14px; margin-top: 28px; flex-wrap:wrap; }
.hero-note{ margin-top: 18px; font-size: .87rem; color: var(--text-faint); }
.hero-diagram{ width:100%; height:auto; }

@media (max-width: 860px){
  .hero-grid{ grid-template-columns: 1fr; }
}

/* ---------------- Panels / cards ---------------- */
.panel{
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-left: 2px solid var(--brass);
  padding: 28px;
  box-shadow: var(--shadow-panel);
}
.grid{ display:grid; gap: 24px; }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px){
  .grid-3, .grid-2, .grid-4{ grid-template-columns: 1fr; }
}

.feature-num{ font-family: var(--font-mono); color: var(--text-faint); font-size:.8rem; }

/* ---------------- Section header ---------------- */
.section-head{ max-width: 640px; margin-bottom: 44px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---------------- Pricing ---------------- */
.price-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:24px; align-items:stretch; }
@media (max-width: 900px){ .price-grid{ grid-template-columns: 1fr; } }
.price-card{
  background: var(--bg-raised); border: 1px solid var(--line);
  padding: 32px 28px; display:flex; flex-direction:column;
}
.price-card.is-featured{ border-color: var(--brass); position:relative; }
.price-card.is-featured::before{
  content: "Most teams pick this"; position:absolute; top:-13px; left:28px;
  background: var(--brass); color: var(--brass-ink); font-size:.75rem; font-weight:700;
  padding: 4px 10px; border-radius: 2px;
}
.price-amount{ font-family: var(--font-display); font-size: 2.4rem; margin: 10px 0 4px; }
.price-amount span{ font-size:1rem; font-family: var(--font-body); color: var(--text-faint); font-weight:500; }
.price-list{ list-style:none; padding:0; margin: 20px 0 28px; flex:1; }
.price-list li{ padding: 9px 0; border-top: 1px solid var(--line-soft); color: var(--text-dim); font-size:.93rem; }
.price-list li:first-child{ border-top:none; }

.compare-table{ width:100%; border-collapse: collapse; margin-top: 12px; }
.compare-table caption{ text-align:left; color: var(--text-faint); font-size:.85rem; margin-bottom:10px; }
.compare-table th, .compare-table td{
  text-align:left; padding: 13px 14px; border-bottom: 1px solid var(--line-soft); font-size:.92rem;
}
.compare-table thead th{ font-family: var(--font-display); font-weight:700; color: var(--text); }
.compare-table td.yes{ color: var(--weld-green); }
.compare-table td.no{ color: var(--text-faint); }
.compare-table tbody th{ color: var(--text-dim); font-weight:500; }
.table-scroll{ overflow-x:auto; }

/* ---------------- FAQ ---------------- */
.faq-item{ border-bottom: 1px solid var(--line-soft); padding: 18px 0; }
.faq-item summary{ cursor:pointer; font-weight:600; list-style:none; display:flex; justify-content:space-between; gap:12px; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:"+"; color: var(--brass); font-size:1.3rem; line-height:1; }
.faq-item[open] summary::after{ content:"–"; }
.faq-item p{ margin-top:12px; }

/* ---------------- Forms ---------------- */
.field{ margin-bottom: 18px; }
.field label{ display:block; font-size:.88rem; font-weight:600; margin-bottom:6px; }
.field .hint{ font-size:.8rem; color: var(--text-faint); margin-top: 5px; }
input, select, textarea{
  width:100%; padding: 11px 13px; background: var(--bg-inset); border: 1px solid var(--line);
  color: var(--text); border-radius: var(--radius-s); font-family: var(--font-body); font-size: .95rem;
}
textarea{ min-height: 140px; resize: vertical; }
input:focus, select:focus, textarea:focus{ border-color: var(--brass); }
.form-status{ margin-top:14px; font-size:.9rem; }
.form-status.ok{ color: var(--weld-green); }
.form-status.err{ color: var(--weld-red); }
fieldset{ border: none; padding:0; margin:0; }

/* ---------------- Blog ---------------- */
.post-list{ display:flex; flex-direction:column; gap: 0; }
.post-row{ display:grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 26px 0; border-top: 1px solid var(--line-soft); }
.post-row:first-child{ border-top:none; }
.post-date{ font-family: var(--font-mono); font-size:.82rem; color: var(--text-faint); padding-top:4px; }
.post-tag{ display:inline-block; font-size:.78rem; color: var(--brass); margin-bottom:6px; }
@media (max-width: 640px){ .post-row{ grid-template-columns: 1fr; gap: 6px; } }

.post-body{ max-width: 68ch; }
.post-body h2{ margin-top: 1.6em; }
.post-body blockquote{
  border-left: 2px solid var(--brass); margin: 1.4em 0; padding: 4px 0 4px 20px; color: var(--text);
  font-family: var(--font-display); font-size: 1.1rem;
}
.post-meta{ color: var(--text-faint); font-size:.88rem; margin-bottom: 8px; }

/* ---------------- Docs ---------------- */
.docs-layout{ display:grid; grid-template-columns: 240px 1fr; gap: 48px; align-items:start; }
@media (max-width: 900px){ .docs-layout{ grid-template-columns: 1fr; } }
.docs-nav{ position: sticky; top: 90px; }
.docs-nav-group{ margin-bottom: 22px; }
.docs-nav-group h4{ font-size:.8rem; text-transform: none; color: var(--text-faint); margin-bottom:8px; font-family: var(--font-body); font-weight:700; }
.docs-nav-group ul{ list-style:none; margin:0; padding:0; }
.docs-nav-group a{ display:block; padding: 6px 0; color: var(--text-dim); font-size:.92rem; border-bottom:none; }
.docs-nav-group a:hover, .docs-nav-group a.active{ color: var(--brass); }
.docs-content h2{ margin-top: 1.4em; }
.docs-content h2:first-child{ margin-top:0; }
pre{
  background: var(--bg-inset); border: 1px solid var(--line); padding: 16px 18px;
  overflow-x:auto; border-radius: var(--radius-s); font-family: var(--font-mono); font-size:.85rem;
}
code{ font-family: var(--font-mono); font-size:.9em; background: var(--bg-inset); padding: 2px 5px; border-radius: 3px; }
pre code{ background:none; padding:0; }

/* ---------------- Footer ---------------- */
.site-footer{ background: var(--bg-inset); border-top: 1px solid var(--line-soft); padding: 64px 0 28px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px; }
@media (max-width: 900px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .footer-grid{ grid-template-columns: 1fr; } }
.footer-grid h4{ font-family: var(--font-body); font-size:.85rem; color: var(--text-faint); margin-bottom: 14px; font-weight:700; }
.footer-grid ul{ list-style:none; margin:0; padding:0; }
.footer-grid li{ margin-bottom: 9px; }
.footer-grid a{ color: var(--text-dim); border-bottom:none; font-size:.92rem; }
.footer-grid a:hover{ color: var(--text); }
.footer-legal{
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line-soft);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap: 12px;
  color: var(--text-faint); font-size:.82rem;
}
address{ font-style:normal; color: var(--text-faint); font-size:.85rem; line-height:1.6; }

/* ---------------- Cookie banner ---------------- */
.cookie-banner{
  position: fixed; left: 16px; right:16px; bottom: 16px; z-index: 300;
  max-width: 620px; margin:0 auto; background: var(--bg-raised); border: 1px solid var(--line);
  border-left: 2px solid var(--brass); padding: 20px 22px; box-shadow: 0 8px 28px rgba(0,0,0,.35);
  transform: translateY(140%); transition: transform .3s ease;
}
.cookie-banner.is-visible{ transform: translateY(0); }
.cookie-banner p{ font-size:.88rem; margin-bottom: 14px; }
.cookie-actions{ display:flex; gap:10px; flex-wrap:wrap; }

/* ---------------- Misc ---------------- */
.badge{ display:inline-block; font-size:.75rem; padding:3px 9px; border:1px solid var(--line); border-radius: 20px; color: var(--text-faint); }
.divider{ height:1px; background: var(--line-soft); border:none; margin: 40px 0; }
.center{ text-align:center; }
.mt-0{ margin-top:0; }
.legal-content h2{ margin-top: 1.6em; }
.legal-content h2:first-child{ margin-top:0; }
.legal-content ul{ color: var(--text-dim); }
.toc{ background: var(--bg-raised); border:1px solid var(--line); padding: 20px 22px; margin-bottom: 32px; }
.toc h4{ margin-top:0; font-family: var(--font-body); font-size:.85rem; color: var(--text-faint); font-weight:700; }
.toc ol{ margin:0; padding-left: 20px; color: var(--text-dim); font-size:.92rem; }