/* Ustaad HQ — replace .mark later with a final logo asset. */
:root {
  --paper: #f4f1ea;
  --paper-2: #ebe6dc;
  --ink: #161815;
  --muted: #5e635c;
  --line: #d8d2c6;
  --pine: #1c3b33;
  --pine-deep: #10241f;
  --brass: #6a4e22;
  --white: #fbfaf7;
  --focus: #1c3b33;
  --max: 1120px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Segoe UI", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.6;
}
img { max-width: 100%; }
a { color: inherit; }
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}
.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: var(--white);
  padding: 0.5rem 0.8rem;
  z-index: 10;
}
.skip:focus { top: 0.5rem; }

.wrap { width: min(var(--max), calc(100% - 2.4rem)); margin-inline: auto; }
.wrap-wide { width: min(1200px, calc(100% - 2.4rem)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
  gap: 1rem;
}
.mark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.mark-name {
  font-family: var(--serif);
  font-size: 1.25rem;
  letter-spacing: 0.14em;
  font-weight: 600;
}
.mark-hq {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--brass);
  font-weight: 650;
}
.nav-toggle { position: absolute; opacity: 0; pointer-events: none; }
.nav-button {
  border: 1px solid var(--line);
  background: var(--white);
  padding: 0.4rem 0.7rem;
  font: inherit;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}
.site-nav {
  display: none;
  gap: 1.25rem;
}
.site-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}
.site-nav a[aria-current="page"] { box-shadow: inset 0 -1px 0 var(--ink); }
.nav-toggle:checked ~ .site-nav {
  display: flex;
  flex-direction: column;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 0.8rem 1.2rem 1.1rem;
}
@media (min-width: 800px) {
  .nav-button { display: none; }
  .site-nav,
  .nav-toggle:checked ~ .site-nav {
    display: flex;
    position: static;
    flex-direction: row;
    padding: 0;
    border: 0;
    background: none;
  }
}

.hero { padding: 4.5rem 0 3.5rem; }
.hero-grid { display: grid; gap: 2.5rem; }
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.4fr 0.8fr; align-items: end; }
}
.hero-index {
  border-top: 1px solid var(--ink);
  padding-top: 1rem;
}
.hero-index ol { list-style: none; margin: 0; padding: 0; }
.hero-index li { border-bottom: 1px solid var(--line); }
.hero-index a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  text-decoration: none;
  font-family: var(--serif);
  font-size: 1.35rem;
}
.hero-index span { font-family: var(--sans); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); align-self: center; }
.band-line { background: var(--paper-2); }
.future { font-family: var(--serif); font-size: 1.35rem; }
.kicker {
  margin: 0 0 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--brass);
  font-weight: 650;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 560; letter-spacing: -0.02em; line-height: 1.08; }
h1 { font-size: clamp(2.7rem, 7vw, 5.4rem); margin: 0 0 1.2rem; max-width: 14ch; }
.lede { font-size: 1.2rem; max-width: 38rem; color: var(--ink); margin: 0 0 1.8rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.8rem;
  padding: 0.55rem 1.1rem;
  text-decoration: none;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--white);
}
.btn.secondary { background: transparent; color: var(--ink); }
.btn:hover { background: var(--pine); border-color: var(--pine); color: var(--white); }

.band { padding: 4.2rem 0; }
.band-dark { background: var(--pine-deep); color: #f3efe6; }
.band-dark .muted, .band-dark p { color: #d9d3c6; }
.section-head { max-width: 36rem; margin-bottom: 2rem; }
.section-head h2 { font-size: clamp(2rem, 4vw, 3rem); margin: 0 0 0.7rem; }
.muted { color: var(--muted); }

.family {
  display: grid;
  gap: 1rem;
}
@media (min-width: 860px) {
  .family { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
}
.product {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.4rem 1.3rem 1.3rem;
  border: 1px solid color-mix(in srgb, #f3efe6 22%, transparent);
  background: color-mix(in srgb, #fff 4%, transparent);
  text-decoration: none;
}
.product:hover { border-color: #f3efe6; }
.product .eyebrow { letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.72rem; color: var(--brass); margin: 0 0 0.7rem; }
.product h3 { margin: 0 0 0.6rem; font-size: 1.8rem; color: #f7f3ea; }
.product p { margin: 0; flex: 1; }
.soon { display: inline-block; margin-top: 1rem; letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.72rem; }

.split { display: grid; gap: 2rem; }
@media (min-width: 860px) {
  .split { grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
}
.principles { display: grid; gap: 1.2rem; }
@media (min-width: 700px) { .principles { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .principles { grid-template-columns: 1fr 1fr 1fr; } }
.principle { border-top: 1px solid var(--line); padding-top: 0.9rem; }
.principle h3 { margin: 0 0 0.4rem; font-size: 1.35rem; }
.principle p { margin: 0; color: var(--muted); }

.tree { list-style: none; margin: 0; padding: 0; }
.tree-root {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.2rem;
}
.tree-items { display: grid; gap: 0.7rem; border-left: 1px solid var(--line); margin-left: 0.4rem; padding-left: 1.2rem; }
.tree-items li { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding: 0.35rem 0; }
.tree-items a { text-decoration: none; font-family: var(--serif); font-size: 1.35rem; }
.tree-items span { color: var(--muted); font-size: 0.92rem; }

.note { max-width: 40rem; }
.contact-strip { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; align-items: end; }
.email { font-family: var(--serif); font-size: clamp(1.4rem, 3vw, 2rem); text-underline-offset: 0.18em; }

.site-footer { border-top: 1px solid var(--line); padding: 1.6rem 0 2rem; color: var(--muted); font-size: 0.92rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.8rem; }
.site-footer a { color: var(--ink); }

.page-hero { padding: 3.2rem 0 1rem; }
.page-hero h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
.prose { max-width: 42rem; }
.prose p { margin: 0 0 1rem; }
.stack { display: grid; gap: 2.2rem; padding-bottom: 3rem; }
.block { border-top: 1px solid var(--line); padding-top: 1.4rem; }
.block h2 { margin: 0 0 0.6rem; font-size: 2rem; }
.list { margin: 0.4rem 0 0; padding-left: 1.1rem; color: var(--muted); }
.list li { margin: 0.25rem 0; }

@media (max-width: 700px) {
  .hero { padding-top: 2.6rem; }
  .band { padding: 3rem 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}