/* ============================================================
   KAMBA — Components & layout (Direction C · Evolution)
   Depends on tokens.css. Plain, portable CSS — no framework.
   ============================================================ */

/* ---- Reset / base ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
/* The hidden attribute must win over any display rule (used by the builder wizard). */
[hidden] { display: none !important; }
::selection { background: var(--sage); color: #fff; }

/* Accessibility: visible focus (WCAG 2.1 AA) */
:focus-visible {
  outline: 3px solid var(--sage-dark);
  outline-offset: 2px;
  border-radius: 4px;
}
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 12px; top: -48px; z-index: 200;
  background: var(--kamba-green); color: #fff; padding: 10px 16px;
  border-radius: var(--r-md); font-weight: 600; text-decoration: none;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 12px; }

/* ---- Layout helpers ---- */
.container { max-width: var(--container); margin: 0 auto; padding-left: var(--sp-8); padding-right: var(--sp-8); }
.container--narrow { max-width: var(--container-narrow); }
.section { padding-top: var(--sp-22); padding-bottom: var(--sp-22); }
.section--alt { background: var(--alt); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.section--surface { background: var(--surface); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }

/* ---- Typography ---- */
.display { font-family: var(--font-display); font-weight: 400; letter-spacing: -0.01em; }
.eyebrow {
  font-size: var(--fs-eyebrow); font-weight: 600; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--sage-dark); margin-bottom: var(--sp-3);
}
.h2 { font-family: var(--font-display); font-weight: 400; font-size: var(--fs-display-l); line-height: 1.1; margin: 0; }
.lede { font-size: 17px; line-height: var(--lh-body); color: var(--ink-soft); margin: 0; }
.text-italic-green { font-style: italic; color: var(--kamba-green); }
.section-head { text-align: center; max-width: 600px; margin: 0 auto var(--sp-12); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-sans); font-weight: 600; font-size: var(--fs-body);
  padding: 15px 28px; border-radius: var(--r-md); border: 1px solid transparent;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--kamba-green); color: var(--on-green); box-shadow: 0 4px 14px -6px rgba(74,103,65,.6); }
.btn--primary:hover { background: #3F5838; }
.btn--secondary { background: var(--surface); color: var(--ink); border-color: var(--border); }
.btn--secondary:hover { background: var(--alt); }
.btn--on-dark { background: #fff; color: var(--ink); }
.btn--sm { padding: 11px 20px; font-size: var(--fs-body-s); }
.btn--block { display: flex; width: 100%; }
.link-arrow { color: var(--kamba-green); font-weight: 600; text-decoration: none; }
.link-arrow:hover { text-decoration: underline; }

/* ---- Header / nav ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 248, 0.86); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-6); padding-top: 16px; padding-bottom: 16px; }
.logo { display: flex; align-items: center; text-decoration: none; }
.logo img { height: 20px; width: auto; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: var(--fs-body-s); font-weight: 500; color: var(--ink-soft); text-decoration: none; transition: color var(--transition); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--kamba-green); }
.header-sep { font-size: var(--fs-meta); color: var(--muted); border-left: 1px solid var(--border); padding-left: 18px; }

/* ---- Cards ---- */
.card { background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--r-lg); }
.card--pad { padding: var(--sp-6); }
.card-hover { transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); border-color: #CFE0CC; }

.grid { display: grid; gap: var(--sp-5); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* Feature icon chip */
.icon-chip {
  width: 44px; height: 44px; border-radius: var(--r-md); background: var(--sage-tint);
  display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: var(--sp-4);
  color: var(--kamba-green);
}
.card-title { font-family: var(--font-display); font-weight: 400; font-size: var(--fs-display-s); margin: 0 0 var(--sp-2); }
.card-title--sm { font-size: var(--fs-h3); }
.card-text { font-size: var(--fs-body-s); line-height: 1.55; color: var(--ink-soft); margin: 0; }

/* ---- Badges / pills ---- */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 5px 11px; border-radius: var(--r-sm); }
.badge--green { color: var(--kamba-green); background: var(--sage-tint); }
.badge--wood  { color: var(--wood-deep); background: var(--sand); }
.badge--amber { color: #fff; background: var(--amber); }
.badge--muted { color: var(--muted); background: var(--surface); border: 1px solid var(--border-soft); }
.pill { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-meta); font-weight: 600; color: var(--sage-dark); background: var(--sage-tint); padding: 7px 15px; border-radius: var(--r-pill); }

/* ---- Forms ---- */
.field-label { font-size: 12.5px; font-weight: 600; color: var(--ink-soft); margin-bottom: 5px; display: block; }
.input {
  display: flex; align-items: center; gap: 8px; width: 100%;
  background: var(--surface-warm); border: 1px solid var(--border-control); border-radius: var(--r-md);
  padding: 11px 14px; font-family: var(--font-sans); font-size: 15px; color: var(--ink);
  transition: border-color var(--transition-fast);
}
.input:focus-within, .input:focus { border-color: var(--sage-dark); }
.textarea {
  width: 100%; min-height: 128px; resize: vertical;
  background: var(--surface-warm); border: 1px solid var(--border-control); border-radius: var(--r-md);
  padding: 14px; font-family: var(--font-sans); font-size: 15px; line-height: 1.55; color: var(--ink);
  transition: border-color var(--transition-fast);
}
.textarea:focus { outline: 3px solid var(--sage-dark); outline-offset: 1px; border-color: var(--sage-dark); }

/* Stepper / number control */
.stepper-btn {
  width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--surface); font-size: 18px; line-height: 1; color: var(--ink-soft);
  cursor: pointer; transition: background var(--transition-fast), border-color var(--transition-fast);
}
.stepper-btn:hover { background: var(--alt); }

/* Segmented control */
.seg {
  flex: 1; padding: 11px 8px; border-radius: var(--r-sm); border: 1px solid var(--border-control);
  background: var(--surface); color: var(--ink-soft); font-weight: 600; font-size: var(--fs-body-s);
  cursor: pointer; transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.seg[aria-pressed="true"] { background: var(--kamba-green); color: #fff; border-color: var(--kamba-green); }

/* ---- Footer ---- */
.site-footer { background: var(--ink); color: var(--on-dark); }
.site-footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: var(--sp-10); padding-top: 56px; padding-bottom: 30px; }
.site-footer img { height: 19px; width: auto; margin-bottom: var(--sp-4); }
.footer-col-title { font-size: 12px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--sage); margin-bottom: var(--sp-4); }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: var(--fs-body-s); color: var(--on-dark); text-decoration: none; transition: color var(--transition); }
.footer-links a:hover { color: #fff; }
.site-footer__bar { border-top: 1px solid #44423D; }
.site-footer__bar-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: 20px; padding-bottom: 20px; font-size: var(--fs-meta); color: #8A847A; }

/* ============================================================
   Responsive — single mobile breakpoint at 860px.
   ============================================================ */
@media (max-width: 860px) {
  :root {
    --fs-display-xl: 40px;
    --fs-display-l: 32px;
    --fs-display-m: 28px;
  }
  .container { padding-left: var(--sp-5); padding-right: var(--sp-5); }
  .section { padding-top: var(--sp-12); padding-bottom: var(--sp-12); }
  .nav { display: none; } /* replace with a menu button in implementation */
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .site-footer__grid { grid-template-columns: 1fr; gap: var(--sp-6); }
}
@media (max-width: 860px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
}
/* M9 (mobile lot #3) — below 520 the 4 "What you get" cards are ~140px each
   (~92px usable) at 360; drop them to a single column so each card gets full
   width. Desktop + tablet (≥521) keep the 2-up grid above. */
@media (max-width: 520px) {
  .grid-4 { grid-template-columns: 1fr; }
}

/* Footer links: comfortable finger targets when the footer stacks (≤768). */
@media (max-width: 768px) {
  .footer-links a { display: inline-flex; align-items: center; min-height: 40px; }
}

/* Builder number-control ± buttons: 44×44 tap target on touch widths (was 34×34).
   Applied ≤900 (coherent with the builder's 1-column fold) so the width/height/
   depth/shelves steppers meet the 44px minimum across phone + tablet portrait.
   Desktop ≥901 keeps the compact 34×34. Only used in the builder's number
   controls; direct keyboard entry is unchanged. (MOB-4) */
@media (max-width: 900px) {
  .stepper-btn { width: 44px; height: 44px; flex-shrink: 0; font-size: 20px; border-radius: 11px; }
}
@media (max-width: 430px) {
  /* Small action buttons: guarantee ≥44px tap target on phones. */
  .btn--sm { min-height: 44px; }
  /* M8 (mobile lot #2) — header language selector: bump to a 44px tap target on
     phones (was ~28px tall). The class is declared inline per page (dashboard /
     start / landing / reference / guides / legal) but every one loads this shared
     sheet, so a single min-height rule reaches them all. Desktop keeps its compact
     height (padding-driven), untouched above this breakpoint. */
  .lang-select { min-height: 44px; }
}

/* M3 (mobile lot #2) — iOS Safari zooms any focused input with font-size < 16px.
   Bump the shared text controls to 16px on mobile only; desktop keeps the 15px
   density (this rule never applies ≥769). Verified: 16px @375, 15px @1280. */
@media (max-width: 768px) {
  .input, .textarea { font-size: 16px; }
}