/* =========================================================
   Kazi — shared styles
   Warm, human, premium B2B services site.
   Palette: cream paper · warm ink · terracotta accent · espresso dark
   Type: Petrona (display serif) · Karla (humanist sans)
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* surfaces — terracotta & cream */
  --paper:        #faf5ec;   /* warm cream */
  --paper-2:      #f3e9da;   /* deeper cream for alternating sections */
  --paper-3:      #fffcf6;   /* lifted cards / inputs */
  --walnut:       #34241c;   /* warm dark section */
  --walnut-2:     #2a1c15;   /* footer */

  /* ink */
  --ink:          #2a221c;   /* warm near-black */
  --ink-soft:     #5a4d42;   /* secondary text */
  --ink-muted:    #8a7c6c;   /* tertiary / meta */
  --on-dark:      #f6ece0;   /* text on walnut */
  --on-dark-soft: #cdb9a6;   /* muted text on walnut */

  /* accent — terracotta */
  --clay:         #c2542f;   /* terracotta (clears AA for white button text) */
  --clay-deep:    #a8431f;   /* small accent text / hover / pressed */
  --clay-soft:    #e08a68;   /* accent on dark */
  --olive:        #7a6a4a;   /* quiet secondary */

  /* lines */
  --line:         #ece0cd;   /* hairline on paper */
  --line-2:       #ddcdb4;
  --line-dark:    #4a3a2c;   /* hairline on walnut */

  /* type */
  --serif: "Petrona", Georgia, "Times New Roman", serif;
  --sans:  "Karla", "Helvetica Neue", Arial, sans-serif;

  /* metrics */
  --container: 1120px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --radius: 14px;
  --radius-lg: 22px;

  /* rhythm */
  --section-y: clamp(4.5rem, 9vw, 8.5rem);

  --shadow: 0 1px 2px rgba(43, 33, 20, .04),
            0 18px 40px -28px rgba(43, 33, 20, .35);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(1.02rem, 0.97rem + 0.25vw, 1.15rem);
  line-height: 1.7;
  font-weight: 400;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

::selection { background: var(--clay); color: #fff; }

:focus-visible {
  outline: 2.5px solid var(--clay);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--ink);
  font-optical-sizing: auto;
  text-wrap: balance;
}

.display {
  font-size: clamp(2.2rem, 1.55rem + 2.7vw, 3.7rem);
  line-height: 1.07;
}

h2 { font-size: clamp(1.95rem, 1.2rem + 2.6vw, 3.25rem); }
h3 { font-size: clamp(1.25rem, 1.05rem + 0.7vw, 1.55rem); line-height: 1.2; }

.lead {
  font-size: clamp(1.12rem, 1.02rem + 0.5vw, 1.4rem);
  line-height: 1.6;
  color: var(--ink-soft);
  font-weight: 400;
  max-width: 40ch;
}

.eyebrow {
  font-family: var(--sans);
  font-size: 0.785rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--clay-deep); /* deeper clay clears AA contrast on cream at this size */
}

.serif-italic { font-style: italic; font-weight: 500; }

p { color: var(--ink-soft); }
p + p { margin-top: 1.05em; }
strong { color: var(--ink); font-weight: 700; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(3rem, 6vw, 5.5rem); }

.section--alt { background: var(--paper-2); }

.divider { border: 0; border-top: 1px solid var(--line); }

.measure { max-width: 58ch; }
.center { text-align: center; }
.center .lead { margin-inline: auto; }

/* a soft heading group: eyebrow + headline */
.heading > .eyebrow { display: block; margin-bottom: 1.15rem; }
.heading > h2 { max-width: 16ch; }
.heading.center > h2 { margin-inline: auto; }
.heading--wide > h2 { max-width: 22ch; }

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--walnut);
  --btn-fg: var(--on-dark);
  --btn-bd: var(--walnut);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--sans);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
  padding: 0.95rem 1.55rem;
  border-radius: 999px;
  border: 1.5px solid var(--btn-bd);
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  transition: transform .18s ease, background-color .2s ease,
              border-color .2s ease, color .2s ease, box-shadow .2s ease;
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--accent {
  --btn-bg: var(--clay);
  --btn-bd: var(--clay);
  --btn-fg: #fff;
  box-shadow: 0 14px 26px -16px rgba(168, 67, 31, .5);
}
.btn--accent:hover { --btn-bg: var(--clay-deep); --btn-bd: var(--clay-deep); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: var(--line-2);
}
.btn--ghost:hover { --btn-bd: var(--ink); --btn-bg: transparent; }

/* on dark sections */
.on-walnut .btn--accent { box-shadow: none; }
.on-walnut .btn--ghost { --btn-fg: var(--on-dark); --btn-bd: var(--line-dark); }
.on-walnut .btn--ghost:hover { --btn-bd: var(--on-dark); }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}
.center .btn-row { justify-content: center; }

.arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* text link with quiet underline */
.text-link {
  color: var(--clay);
  font-weight: 600;
  border-bottom: 1.5px solid color-mix(in srgb, var(--clay) 35%, transparent);
  padding-bottom: 1px;
  transition: border-color .2s ease, color .2s ease;
}
.text-link:hover { border-color: var(--clay); color: var(--clay-deep); }

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 80%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background-color .25s ease;
}
.site-header[data-scrolled="true"] {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.62rem;
  font-family: var(--serif);
  font-size: 1.42rem;
  font-weight: 520;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand__mark { flex: none; color: var(--ink); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
}
.nav__link {
  display: inline-block;
  padding: 0.55rem 0.9rem;
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--ink-soft);
  border-radius: 999px;
  transition: color .18s ease, background-color .18s ease;
}
.nav__link:hover { color: var(--ink); background: color-mix(in srgb, var(--line) 45%, transparent); }
.nav__link[aria-current="page"] { color: var(--ink); }

.nav__cta { margin-left: 0.4rem; padding: 0.7rem 1.25rem; }

/* mobile nav toggle */
.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 12px;
  cursor: pointer;
  color: var(--ink);
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  display: block;
  width: 19px; height: 1.8px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.nav__toggle span { position: relative; }
.nav__toggle span::before { position: absolute; top: -6px; }
.nav__toggle span::after  { position: absolute; top:  6px; }
.nav[data-open="true"] .nav__toggle span { background: transparent; }
.nav[data-open="true"] .nav__toggle span::before { transform: translateY(6px) rotate(45deg); }
.nav[data-open="true"] .nav__toggle span::after  { transform: translateY(-6px) rotate(-45deg); }

/* =========================================================
   Hero
   ========================================================= */
.hero { padding-block: clamp(3.5rem, 7vw, 7rem) clamp(3rem, 6vw, 6rem); }
.hero__inner { max-width: 60rem; margin-inline: auto; text-align: center; }
.hero .display { margin-bottom: 1.6rem; }
.hero .lead {
  max-width: 46ch;
  margin: 0 auto 2.3rem;
  font-size: clamp(1.08rem, 1rem + 0.42vw, 1.28rem);
}
.hero .btn-row { justify-content: center; }

.trust {
  margin-top: 2.6rem;
  font-size: 0.95rem;
  color: var(--ink-muted);
  max-width: 52ch;
  margin-inline: auto;
}
.trust::before {
  content: "";
  display: block;
  width: 34px; height: 1px;
  background: var(--line-2);
  margin: 0 auto 1.4rem;
}

/* =========================================================
   "Who we work with" — example blocks
   ========================================================= */
.examples { display: grid; gap: 0; margin-top: clamp(2.5rem, 5vw, 4rem); }
.example {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1rem, 5vw, 4rem);
  padding-block: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  align-items: start;
}
.example:last-child { border-bottom: 1px solid var(--line); }
.example__label { display: block; margin-bottom: 1rem; }
.example__pain {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 1.1rem + 1.3vw, 2rem);
  line-height: 1.14;
  color: var(--ink);
  font-style: italic;
  font-weight: 420;
}
.example__detail { margin: 0; }
.example__detail .label-inline {
  display: block;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
}

/* =========================================================
   How it works — steps
   ========================================================= */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
}
.step {
  background: var(--paper-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.4vw, 2.1rem);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.step__num {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--clay-deep);
  width: 2.4rem; height: 2.4rem;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1.5px solid color-mix(in srgb, var(--clay) 40%, transparent);
  border-radius: 50%;
}
.step h3 { margin-top: 0.2rem; }
.step p { margin: 0; }

/* =========================================================
   What we build — capability grid
   ========================================================= */
.build-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.capabilities {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.2rem 2.5rem;
}
.capabilities li {
  display: flex;
  gap: 0.8rem;
  align-items: baseline;
  padding-block: 0.85rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-weight: 500;
}
.capabilities li::before {
  content: "";
  flex: none;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--clay);
  transform: translateY(-1px) rotate(45deg);
}

/* =========================================================
   Why it works — reasons
   ========================================================= */
.reasons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: clamp(1rem, 3vw, 2rem);
}
.reason {
  padding: clamp(1.4rem, 2.2vw, 1.9rem) clamp(1.4rem, 2.5vw, 2.2rem);
  border-top: 1px solid var(--line);
}
.reason h3 {
  font-family: var(--sans);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 0.45rem;
  color: var(--ink);
}
.reason p { margin: 0; font-size: 0.99rem; }
/* keep a tidy two-column rule set */
.reason:nth-child(odd)  { border-right: 1px solid var(--line); padding-left: 0; }
.reason:nth-child(even) { padding-right: 0; }

/* =========================================================
   Engagement model
   ========================================================= */
.engage-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.engage-note {
  margin-top: 1.6rem;
  padding: 1.1rem 1.3rem;
  border-left: 2px solid var(--clay);
  background: color-mix(in srgb, var(--clay) 7%, transparent);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink);
  font-weight: 500;
}
.includes { list-style: none; padding: 0; }
.includes li {
  display: flex;
  gap: 0.85rem;
  align-items: baseline;
  padding-block: 0.9rem;
  border-bottom: 1px solid var(--line);
}
.includes li:first-child { border-top: 1px solid var(--line); }
.includes .idx {
  font-family: var(--serif);
  font-size: 0.92rem;
  color: var(--clay-deep);
  font-weight: 600;
  flex: none;
}

/* =========================================================
   Dark CTA / contact band
   ========================================================= */
.band {
  background: var(--walnut);
  color: var(--on-dark);
}
.on-walnut { color: var(--on-dark); }
.on-walnut h2, .on-walnut h1, .on-walnut h3 { color: var(--on-dark); }
.on-walnut p { color: var(--on-dark-soft); }
.on-walnut .eyebrow { color: var(--clay-soft); }

.cta-band { text-align: center; }
.cta-band h2 { max-width: 18ch; margin-inline: auto; }
.cta-band .lead {
  color: var(--on-dark-soft);
  margin: 1.4rem auto 2.3rem;
  max-width: 48ch;
}
.cta-band .btn-row { justify-content: center; }

.contact-meta {
  margin-top: 2.2rem;
  font-size: 0.95rem;
  color: var(--on-dark-soft);
}
.contact-meta a {
  color: var(--on-dark);
  border-bottom: 1px solid var(--line-dark);
  padding-bottom: 1px;
  transition: border-color .2s ease;
}
.contact-meta a:hover { border-color: var(--clay-soft); }

/* =========================================================
   About page
   ========================================================= */
.founder {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  padding-block: clamp(2.5rem, 5vw, 4rem);
  border-top: 1px solid var(--line);
  align-items: start;
}
.founder__name { margin: 0.9rem 0 0.7rem; }
.founder__meta {
  font-size: 0.94rem;
  color: var(--ink-muted);
  line-height: 1.55;
}
.founder__meta span { display: block; }
.founder__bio p { color: var(--ink-soft); }
.founder__bio p:first-child { color: var(--ink); }

.why-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: start;
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background: var(--walnut-2);
  color: var(--on-dark-soft);
  padding-block: clamp(3rem, 5vw, 4.5rem);
  border-top: 1px solid var(--line-dark);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  align-items: flex-start;
}
.footer-brand { max-width: 30ch; }
.footer-brand .brand { color: var(--on-dark); margin-bottom: 0.9rem; }
.footer-brand .brand__mark { color: var(--on-dark); }
.footer-brand p { color: var(--on-dark-soft); font-size: 0.96rem; }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  list-style: none;
  padding: 0;
}
.footer-nav a {
  color: var(--on-dark-soft);
  font-size: 0.96rem;
  transition: color .18s ease;
}
.footer-nav a:hover { color: var(--on-dark); }
.footer-bottom {
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.4rem;
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  font-size: 0.88rem;
  color: var(--on-dark-soft);
}

/* =========================================================
   Scroll reveal (progressive enhancement)
   ========================================================= */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s cubic-bezier(.2,.7,.2,1),
              transform .7s cubic-bezier(.2,.7,.2,1);
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* anchor offset under sticky header */
[id] { scroll-margin-top: 92px; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 880px) {
  .build-layout,
  .engage-layout,
  .why-layout,
  .founder { grid-template-columns: 1fr; }

  .heading--wide > h2, .heading > h2 { max-width: 26ch; }

  .steps { grid-template-columns: 1fr; }
  .reasons { grid-template-columns: 1fr; }
  .reason { padding-inline: 0 !important; border-right: 0 !important; }

  .founder { gap: 0.6rem; }
  .founder__meta { margin-bottom: 0.4rem; }
}

@media (max-width: 720px) {
  /* mobile nav */
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: absolute;
    top: 76px;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.8rem var(--gutter) 1.4rem;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform-origin: top;
    display: none;
  }
  .nav[data-open="true"] .nav__links { display: flex; }
  .nav__link { padding: 0.85rem 0.4rem; font-size: 1.05rem; border-radius: 8px; }
  .nav__cta { margin: 0.5rem 0 0; align-self: flex-start; }

  .example { grid-template-columns: 1fr; gap: 0.9rem; }
  .capabilities { grid-template-columns: 1fr; }

  .hero { padding-top: 2.5rem; }
}

@media (max-width: 420px) {
  .btn { width: 100%; justify-content: center; }
  .btn-row { width: 100%; }
  .nav__cta { width: auto; }
}

/* =========================================================
   Motion preferences
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}