/* =========================================================================
   Kribs Development - styles
   Design system: refined, minimalist, architectural.
   ========================================================================= */

:root {
  /* Palette */
  --paper: #F4F3EE;
  --paper-2: #ECEAE1;
  --ink: #1B1C17;
  --ink-soft: #4A4B42;
  --muted: #76766B;
  --olive: #4C5733;
  --olive-deep: #3A431F;
  --oak: #A8997E;
  --line: #D7D3C7;

  /* Type roles */
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", "Consolas", monospace;

  /* Rhythm */
  --wrap: 1120px;
  --gutter: clamp(1.25rem, 5vw, 3rem);
  --radius: 2px;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

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

a { color: inherit; }

h1, h2, h3, p, dl, dd, figure { margin: 0; }

ul { margin: 0; padding: 0; list-style: none; }

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

.visually-hidden {
  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: 1rem;
  top: -3rem;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-radius: var(--radius);
  transition: top 0.15s ease;
}
.skip-link:focus { top: 1rem; }

/* Eyebrows / mono labels */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}
.eyebrow-oak { color: var(--oak); }

/* Focus states */
:focus-visible {
  outline: 2px solid var(--olive);
  outline-offset: 3px;
  border-radius: var(--radius);
}
.model :focus-visible { outline-color: var(--oak); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease,
              border-color 0.18s ease, transform 0.18s ease;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-primary:hover { background: var(--olive-deep); border-color: var(--olive-deep); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--paper-2); }

@media (prefers-reduced-motion: no-preference) {
  .btn:active { transform: translateY(1px); }
}

/* ---- Header --------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 68px;
}
.wordmark {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  line-height: 1.1;
}
.wordmark-name {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.14em;
  color: var(--ink);
}
.wordmark-locator {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.site-nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.25rem);
}
.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink-soft);
  padding: 0.25rem 0;
  position: relative;
  transition: color 0.15s ease;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--olive);
  transition: width 0.2s ease;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after { width: 100%; }

@media (max-width: 620px) {
  .site-nav { display: none; }
}

/* ---- Hero ----------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.4;
  mask-image: radial-gradient(120% 90% at 20% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 90% at 20% 0%, #000 30%, transparent 78%);
}
.hero-inner {
  position: relative;
  padding-top: clamp(3.5rem, 9vw, 7rem);
  padding-bottom: clamp(3.5rem, 9vw, 7rem);
  max-width: 900px;
}
.hero-inner .eyebrow { margin-bottom: 1.5rem; }

.hero-h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.4rem, 6.2vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 15ch;
}
.hero-h1 .accent {
  display: block;
  font-style: italic;
  color: var(--olive);
  font-weight: 400;
}
.lead {
  margin-top: 1.75rem;
  max-width: 56ch;
  font-size: clamp(1.02rem, 1.6vw, 1.18rem);
  color: var(--ink-soft);
  line-height: 1.65;
}
.hero-cta {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}
.meta-row {
  margin-top: 2.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.9rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.meta-row span { display: inline-flex; align-items: center; }
.meta-row span:not(:last-child)::after {
  content: "·";
  margin-left: 0.9rem;
  color: var(--oak);
}

/* ---- Generic section ------------------------------------------------------ */
.section {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}
.section-head {
  max-width: 60ch;
  margin-bottom: clamp(2rem, 4vw, 3.25rem);
}
.section-head .eyebrow { margin-bottom: 0.9rem; }
.section-h {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.8rem, 3.8vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.section-sub {
  margin-top: 1rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 52ch;
}

/* ---- Cards ---------------------------------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2.5vw, 1.75rem);
}
.cards-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  display: flex;
  flex-direction: column;
}
.card-num {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--oak);
  margin-bottom: 1.25rem;
}
.card-h {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.5rem;
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 0.75rem;
}
.card-body {
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 1.6;
}
.card-aud .eyebrow { margin-bottom: 1.1rem; }
.card-aud .card-h { font-size: 1.65rem; }
.card-aud .btn { margin-top: 1.5rem; align-self: flex-start; }

@media (max-width: 820px) {
  .cards { grid-template-columns: 1fr; }
  .cards-2 { grid-template-columns: 1fr; }
}

/* ---- The Model - DARK tear-sheet ------------------------------------------ */
.model {
  background: var(--ink);
  color: var(--paper);
}
.model-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.model-lead { max-width: 44ch; }
.model-h {
  color: var(--paper);
  margin-top: 0.9rem;
}
.model-note {
  margin-top: 1.5rem;
  color: color-mix(in srgb, var(--paper) 72%, transparent);
  font-size: 1.05rem;
  line-height: 1.65;
}

.tearsheet {
  background: color-mix(in srgb, var(--ink) 78%, #000);
  border: 1px solid color-mix(in srgb, var(--oak) 45%, transparent);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.25rem);
}
.tearsheet-cap {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--oak);
  padding-bottom: 1.1rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid color-mix(in srgb, var(--oak) 30%, transparent);
}
.terms { display: block; }
.term {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: 1rem;
  align-items: baseline;
  padding: 0.95rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--paper) 12%, transparent);
}
.term:last-child { border-bottom: 0; padding-bottom: 0.35rem; }
.term dt {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--paper) 60%, transparent);
}
.term dd {
  font-family: var(--mono);
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--paper);
}
.term-sub {
  color: var(--oak);
  font-size: 0.82rem;
}

@media (max-width: 820px) {
  .model-inner { grid-template-columns: 1fr; }
}
@media (max-width: 400px) {
  .term { grid-template-columns: 1fr; gap: 0.25rem; }
}

/* ---- Where We Work - chips ------------------------------------------------ */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.chips li {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.55rem 0.95rem;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.chips li:hover { border-color: var(--oak); color: var(--ink); }

/* ---- Audiences ------------------------------------------------------------ */
.audiences { border-top: 1px solid var(--line); }

/* ---- Contact -------------------------------------------------------------- */
.contact { border-top: 1px solid var(--line); }
.contact-inner .eyebrow { margin-bottom: 1rem; }
.contact-h {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(3rem, 9vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 2.5rem;
}
.contact-list {
  display: grid;
  gap: 0;
  max-width: 34rem;
  border-top: 1px solid var(--line);
}
.contact-row {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.contact-row dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-row dd {
  font-size: 1.1rem;
  color: var(--ink);
}
.contact-row a {
  text-decoration: none;
  border-bottom: 1px solid var(--oak);
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.contact-row a:hover { color: var(--olive); border-color: var(--olive); }

@media (max-width: 460px) {
  .contact-row { grid-template-columns: 1fr; gap: 0.15rem; }
}

/* ---- Footer --------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper-2);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.75rem;
}
.footer-mark {
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
}
.footer-meta,
.footer-copy {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---- Scroll reveal -------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}