/* ============================================================
   TreeLine — trade-authentic redesign
   Display: Bricolage Grotesque · Body: Hanken Grotesk
   ============================================================ */

:root {
  /* palette — OKLCH, neutrals tinted toward green/brown */
  --paper:       oklch(0.962 0.012 95);
  --paper-2:     oklch(0.935 0.016 92);
  --ink:         oklch(0.23 0.022 152);
  --ink-soft:    oklch(0.40 0.018 152);
  --forest:      oklch(0.29 0.045 156);
  --forest-deep: oklch(0.205 0.038 156);
  --line:        oklch(0.23 0.02 152 / 0.14);
  --line-on-dark: oklch(0.96 0.02 95 / 0.16);
  --accent:      oklch(0.64 0.155 52);   /* rust / sawdust amber */
  --accent-bright: oklch(0.70 0.16 58);
  --cream-on-dark: oklch(0.93 0.018 92);
  --muted-on-dark: oklch(0.86 0.02 95 / 0.92);

  /* type */
  --display: "Bricolage Grotesque", Georgia, serif;
  --body: "Hanken Grotesk", system-ui, sans-serif;

  /* spacing (4pt) */
  --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px; --s-5: 24px;
  --s-6: 32px; --s-7: 48px; --s-8: 64px; --s-9: 96px; --s-10: 128px;

  --maxw: 1240px;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

* { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: var(--paper); }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(20px, 5vw, 56px); }

/* grain overlay on dark surfaces */
.grain { position: relative; }
.grain::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: var(--grain); background-size: 180px; opacity: 0.06; mix-blend-mode: overlay;
}

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--display); font-weight: 800; line-height: 0.98; letter-spacing: -0.02em; }
.eyebrow {
  font-family: var(--body); font-weight: 700; font-size: 0.78rem;
  text-transform: uppercase; letter-spacing: 0.16em; color: var(--accent);
  display: inline-flex; align-items: center; gap: var(--s-3);
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--accent); display: inline-block; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--ink-soft); max-width: 56ch; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--s-3);
  font-family: var(--body); font-weight: 700; font-size: 1rem;
  padding: 16px 26px; border: 2px solid transparent; cursor: pointer;
  transition: transform .25s cubic-bezier(.2,.7,.3,1), background-color .25s, color .25s, border-color .25s;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--accent); color: oklch(0.18 0.02 60); }
.btn-primary:hover { background: var(--accent-bright); transform: translateY(-2px); }
.btn-ghost { background: transparent; border-color: currentColor; }
.btn-ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-ghost.on-dark:hover { background: var(--paper); color: var(--forest-deep); border-color: var(--paper); }
.link-arrow { font-weight: 700; display: inline-flex; align-items: center; gap: 8px; }
.link-arrow span { color: var(--accent); transition: transform .25s; }
.link-arrow:hover span { transform: translateX(4px); }

/* ---------- nav ---------- */
.nav { position: absolute; top: 0; left: 0; right: 0; z-index: 50; }
.nav-in { display: flex; align-items: center; justify-content: space-between; padding-block: var(--s-5); }
.brand { display: flex; flex-direction: column; line-height: 1; color: var(--paper); }
.brand b { font-family: var(--display); font-weight: 800; font-size: 1.5rem; letter-spacing: -0.01em; }
.brand b i { color: var(--accent); font-style: normal; }
.brand small { font-family: var(--body); font-weight: 600; font-size: 0.62rem; letter-spacing: 0.22em; text-transform: uppercase; opacity: 0.7; margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: var(--s-6); list-style: none; }
.nav-links a { color: var(--cream-on-dark); font-weight: 600; font-size: 0.95rem; transition: color .2s; }
.nav-links a:hover { color: var(--accent-bright); }
.nav-cta { background: var(--accent); color: oklch(0.18 0.02 60); padding: 11px 20px; font-weight: 700; }
.nav-cta:hover { background: var(--accent-bright); }
.nav-toggle { display: none; background: none; border: 0; color: var(--paper); cursor: pointer; }

/* ---------- hero ---------- */
.hero { position: relative; min-height: min(94vh, 860px); display: flex; align-items: flex-end; color: var(--paper); isolation: isolate; }
.hero-img { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; object-position: 50% 35%; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, oklch(0.15 0.03 156 / 0.45) 0%, oklch(0.15 0.03 156 / 0.2) 45%, oklch(0.15 0.03 156 / 0.55) 100%);
}
.hero-in { padding-block: clamp(var(--s-8), 14vh, 160px) var(--s-9); width: 100%; }
.hero-panel {
  background: oklch(0.155 0.032 156 / 0.9);
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
  border-top: 3px solid var(--accent);
  padding: clamp(28px, 3.4vw, 52px) clamp(24px, 3.4vw, 52px) clamp(32px, 3.4vw, 52px);
  max-width: 680px;
}
.hero-meta { display: flex; flex-wrap: wrap; gap: var(--s-4) var(--s-5); font-weight: 600; font-size: 0.88rem; color: var(--muted-on-dark); margin-bottom: var(--s-5); }
.hero-meta span { display: inline-flex; align-items: center; gap: var(--s-2); }
.hero-meta span::before { content: ""; width: 6px; height: 6px; background: var(--accent); transform: rotate(45deg); }
.hero h1 { font-size: clamp(2.7rem, 7.5vw, 6rem); max-width: 16ch; text-wrap: balance; }
.hero h1 em { font-style: normal; color: var(--accent-bright); }
.hero p { margin-top: var(--s-5); font-size: clamp(1.1rem, 1.7vw, 1.4rem); max-width: 50ch; color: var(--cream-on-dark); }
.hero-actions { margin-top: var(--s-7); display: flex; flex-wrap: wrap; gap: var(--s-4); }

/* ---------- section scaffolding ---------- */
section { padding-block: clamp(var(--s-8), 11vw, var(--s-10)); }
.section-dark { background: var(--forest-deep); color: var(--cream-on-dark); }
.section-dark h2, .section-dark h3 { color: var(--paper); }
.band-head { max-width: 60ch; margin-bottom: var(--s-8); }
.band-head h2 { font-size: clamp(2rem, 4.6vw, 3.6rem); margin-top: var(--s-4); text-wrap: balance; }

/* manifesto — asymmetric 2-col */
.manifesto { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(var(--s-6), 6vw, var(--s-9)); align-items: start; }
.manifesto h2 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); text-wrap: balance; }
.manifesto h2 em { font-style: normal; color: var(--accent); }
.manifesto .col-side { padding-top: var(--s-3); }
.checklist { list-style: none; display: grid; gap: var(--s-4); }
.checklist li { display: grid; grid-template-columns: auto 1fr; gap: var(--s-4); align-items: baseline; padding-bottom: var(--s-4); border-bottom: 1px solid var(--line); font-weight: 500; }
.checklist b { font-family: var(--display); font-weight: 800; color: var(--accent); font-size: 1.1rem; }

/* services — numbered editorial list, NOT a card grid */
.services { display: grid; gap: 0; }
.svc {
  display: grid; grid-template-columns: 72px 1fr auto; gap: var(--s-5);
  align-items: center; padding-block: clamp(var(--s-5), 3.4vw, var(--s-7));
  border-top: 1px solid var(--line); transition: padding-left .3s cubic-bezier(.2,.7,.3,1);
}
.svc:last-child { border-bottom: 1px solid var(--line); }
.svc:hover { padding-left: var(--s-4); }
.svc-no { font-family: var(--display); font-weight: 800; font-size: clamp(1.2rem,2vw,1.6rem); color: var(--accent); }
.svc-body h3 { font-size: clamp(1.4rem, 2.8vw, 2.1rem); margin-bottom: 6px; }
.svc-body p { color: var(--ink-soft); max-width: 60ch; }
.svc-go { color: var(--accent); transition: transform .25s; }
.svc:hover .svc-go { transform: translateX(6px); }

/* how-we-work — split with image */
.split { display: grid; grid-template-columns: 0.95fr 1.05fr; align-items: stretch; }
.split-img { position: relative; min-height: 460px; }
.split-img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.split-body { padding: clamp(var(--s-7), 6vw, var(--s-9)); }
.steps { display: grid; gap: var(--s-6); margin-top: var(--s-7); counter-reset: step; }
.step { display: grid; grid-template-columns: auto 1fr; gap: var(--s-5); }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--display); font-weight: 800; font-size: 1.5rem; color: var(--accent);
  border: 2px solid var(--line-on-dark); width: 56px; height: 56px; display: grid; place-items: center;
}
.step h3 { font-size: 1.3rem; margin-bottom: 4px; }
.step p { color: var(--muted-on-dark); max-width: 48ch; }

/* why-us — offset facts, no counters */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--s-6) var(--s-7); }
.fact { padding-top: var(--s-5); border-top: 2px solid var(--ink); }
.fact h3 { font-size: clamp(1.3rem, 2.2vw, 1.7rem); margin-bottom: var(--s-3); }
.fact p { color: var(--ink-soft); }

/* CTA band */
.cta { background: var(--forest-deep); color: var(--paper); text-align: left; }
.cta-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: clamp(var(--s-6), 6vw, var(--s-9)); align-items: end; }
.cta h2 { font-size: clamp(2.2rem, 5vw, 4rem); text-wrap: balance; }
.cta h2 em { font-style: normal; color: var(--accent-bright); }
.cta p { color: var(--muted-on-dark); margin-top: var(--s-5); max-width: 46ch; }

/* form */
.form { display: grid; gap: var(--s-4); background: oklch(0.96 0.012 95 / 0.06); padding: clamp(var(--s-5), 3vw, var(--s-7)); border: 1px solid var(--line-on-dark); }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-4); }
.form label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted-on-dark); display: block; margin-bottom: 6px; }
.form input, .form select, .form textarea {
  width: 100%; font-family: var(--body); font-size: 1rem; color: var(--paper);
  background: oklch(0.18 0.03 156 / 0.55); border: 1px solid var(--line-on-dark); padding: 13px 14px;
}
.form input::placeholder, .form textarea::placeholder { color: oklch(0.8 0.02 95 / 0.45); }
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.form textarea { resize: vertical; min-height: 96px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* footer */
.foot { background: oklch(0.16 0.03 156); color: var(--cream-on-dark); padding-block: var(--s-9) var(--s-6); }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--s-7); }
.foot h4, .foot .foot-h { font-family: var(--body); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--muted-on-dark); margin-bottom: var(--s-4); font-weight: 700; }
.foot ul { list-style: none; display: grid; gap: var(--s-3); }
.foot a { color: var(--cream-on-dark); opacity: 0.85; transition: opacity .2s, color .2s; }
.foot a:hover { opacity: 1; color: var(--accent-bright); }
.foot .brand { color: var(--paper); margin-bottom: var(--s-4); }
.foot-note { margin-top: var(--s-8); padding-top: var(--s-5); border-top: 1px solid var(--line-on-dark); font-size: 0.85rem; color: var(--muted-on-dark); display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--s-3); }

/* reveal on load/scroll — only hide when JS is active, so no-JS users always see content */
html.js .rv { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1); }
html.js .rv.in { opacity: 1; transform: none; }
.rv.d1 { transition-delay: .08s; } .rv.d2 { transition-delay: .16s; } .rv.d3 { transition-delay: .24s; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .manifesto, .split, .cta-grid { grid-template-columns: 1fr; }
  .split-img { min-height: 300px; order: -1; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: flex-start; gap: var(--s-4);
    position: absolute; top: 100%; left: 0; right: 0; background: var(--forest-deep);
    padding: var(--s-5) clamp(20px,5vw,56px) var(--s-6);
  }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .form .row { grid-template-columns: 1fr; }
  .svc { grid-template-columns: 48px 1fr; }
  .svc-go { display: none; }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; }
  .btn, .svc, .svc-go, .link-arrow span { transition: none; }
}

/* ============================================================
   Interior pages (service, blog, about, pricing, contact)
   ============================================================ */

/* interior hero — dark forest band */
.page-hero { position: relative; background: var(--forest-deep); color: var(--cream-on-dark); padding-block: clamp(118px, 17vh, 180px) clamp(var(--s-7), 9vw, var(--s-9)); }
.page-hero .eyebrow { color: var(--accent-bright); }
.page-hero h1 { font-size: clamp(2.4rem, 6.5vw, 4.6rem); max-width: 18ch; margin-top: var(--s-4); text-wrap: balance; }
.page-hero h1 em { font-style: normal; color: var(--accent-bright); }
.page-hero p { margin-top: var(--s-5); font-size: clamp(1.05rem, 1.7vw, 1.3rem); color: var(--cream-on-dark); max-width: 56ch; }
.page-hero .hero-actions { margin-top: var(--s-6); }
.breadcrumb { font-size: 0.82rem; font-weight: 600; color: var(--muted-on-dark); margin-bottom: var(--s-5); display: flex; gap: var(--s-2); flex-wrap: wrap; }
.breadcrumb a { color: var(--muted-on-dark); }
.breadcrumb a:hover { color: var(--accent-bright); }
.breadcrumb .sep { opacity: 0.5; }

/* generic content + prose */
.content { padding-block: clamp(var(--s-8), 10vw, var(--s-10)); }
.content.alt { background: var(--paper-2); }
.prose { max-width: 70ch; }
.prose > * + * { margin-top: var(--s-5); }
.prose h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); margin-top: var(--s-8); }
.prose h3 { font-size: clamp(1.25rem, 2.2vw, 1.6rem); margin-top: var(--s-6); }
.prose p, .prose li { color: var(--ink-soft); font-size: 1.05rem; }
.prose strong { color: var(--ink); }
.prose ul, .prose ol { padding-left: 1.25em; display: grid; gap: var(--s-3); }
.prose li { padding-left: var(--s-2); }
.prose li::marker { color: var(--accent); }
.prose a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 2px; }
.prose a:hover { color: var(--accent); }
.prose blockquote { font-family: var(--display); font-weight: 700; font-size: clamp(1.3rem, 2.6vw, 1.9rem); line-height: 1.25; color: var(--ink); padding-left: var(--s-5); border-left: 3px solid var(--accent); }
.prose table { width: 100%; border-collapse: collapse; font-size: 0.95rem; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: var(--s-3) var(--s-4); border: 1px solid var(--line); vertical-align: top; }
.prose thead th { font-family: var(--body); font-weight: 700; color: var(--ink); background: var(--paper); }
.prose td { color: var(--ink-soft); }
.prose code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; background: var(--paper); border: 1px solid var(--line); padding: 1px 5px; border-radius: 4px; }

/* two-column content (intro + aside) */
.two-col { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(var(--s-6), 6vw, var(--s-9)); align-items: start; }

/* FAQ — native details, no JS */
.faqs { display: grid; gap: 0; max-width: 80ch; }
.faq { border-top: 1px solid var(--line); }
.faqs .faq:last-child { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: var(--s-4); padding-block: var(--s-5); font-family: var(--display); font-weight: 700; font-size: clamp(1.05rem, 1.8vw, 1.3rem); color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--body); font-weight: 700; font-size: 1.5rem; color: var(--accent); transition: transform .25s; }
.faq[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--ink-soft); padding-bottom: var(--s-5); max-width: 70ch; }

/* pricing tiers */
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--s-5); align-items: stretch; }
.tier { display: flex; flex-direction: column; gap: var(--s-4); padding: clamp(var(--s-6), 3vw, var(--s-7)); border: 1px solid var(--line); background: var(--paper); }
.tier.feature { background: var(--forest-deep); color: var(--cream-on-dark); border-color: var(--forest-deep); }
.tier.feature h3, .tier.feature .price { color: var(--paper); }
.tier .kicker { font-size: 0.74rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em; color: var(--accent); }
.tier h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
.tier .price { font-family: var(--display); font-weight: 800; font-size: clamp(2rem, 4vw, 2.8rem); line-height: 1; }
.tier .price span { font-family: var(--body); font-size: 0.95rem; font-weight: 600; color: var(--ink-soft); }
.tier.feature .price span { color: var(--muted-on-dark); }
.tier ul { list-style: none; display: grid; gap: var(--s-3); margin-top: var(--s-2); }
.tier li { display: grid; grid-template-columns: auto 1fr; gap: var(--s-3); align-items: start; color: var(--ink-soft); }
.tier.feature li { color: var(--cream-on-dark); }
.tier li::before { content: ""; width: 14px; height: 14px; margin-top: 6px; background: var(--accent); clip-path: polygon(14% 52%, 0 66%, 40% 100%, 100% 16%, 86% 4%, 38% 70%); }
.tier .btn { margin-top: auto; justify-content: center; }

/* blog index — editorial list, not a card grid */
.post-list { display: grid; gap: 0; }
.post { display: grid; grid-template-columns: auto 1fr auto; gap: var(--s-5); align-items: baseline; padding-block: clamp(var(--s-5), 3vw, var(--s-6)); border-top: 1px solid var(--line); transition: padding-left .3s cubic-bezier(.2,.7,.3,1); }
.post-list .post:last-child { border-bottom: 1px solid var(--line); }
.post:hover { padding-left: var(--s-4); }
.post .tag { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); }
.post h2, .post h3 { font-size: clamp(1.3rem, 2.6vw, 1.9rem); }
.post p { color: var(--ink-soft); margin-top: 6px; max-width: 70ch; }
.post .go { color: var(--accent); }

@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; }
  .post { grid-template-columns: 1fr; gap: var(--s-2); }
  .post .go { display: none; }
}

/* ---------- nav dropdown (Services) ---------- */
.has-dd { position: relative; }
.dd-toggle { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.dd-toggle svg { width: 11px; height: 11px; transition: transform .2s; }
.has-dd:hover .dd-toggle svg, .has-dd:focus-within .dd-toggle svg { transform: rotate(180deg); }
.dd-menu {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 232px; z-index: 60;
  list-style: none; display: grid; gap: 2px; padding: 8px;
  background: var(--forest-deep); border: 1px solid var(--line-on-dark);
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .18s ease, transform .18s ease;
}
.has-dd:hover .dd-menu, .has-dd:focus-within .dd-menu { opacity: 1; visibility: visible; transform: none; }
.dd-menu a { display: block; padding: 9px 12px; color: var(--cream-on-dark); font-weight: 600; font-size: 0.9rem; }
.dd-menu a:hover { background: oklch(0.96 0.02 95 / 0.08); color: var(--accent-bright); }

@media (max-width: 900px) {
  .has-dd { width: 100%; }
  .dd-menu {
    position: static; opacity: 1; visibility: visible; transform: none;
    background: transparent; border: 0; padding: var(--s-2) 0 var(--s-2) var(--s-4); gap: var(--s-2);
  }
  .has-dd:hover .dd-toggle svg, .has-dd:focus-within .dd-toggle svg { transform: none; }
}

/* ---------- accessibility: skip link + focus ---------- */
.skip-link {
  position: absolute; left: 8px; top: -48px; z-index: 100;
  background: var(--accent); color: oklch(0.18 0.02 60); font-weight: 700;
  padding: 10px 16px; transition: top .18s ease;
}
.skip-link:focus { top: 8px; }
a:focus-visible, button:focus-visible, .btn:focus-visible,
.nav-links a:focus-visible, .dd-menu a:focus-visible, .foot a:focus-visible,
.prose a:focus-visible, summary:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--accent-bright); outline-offset: 2px; border-radius: 2px;
}