/* ============================================================
   Convergent Commerce — warm professional, editorial restraint
   ============================================================ */

:root {
  /* Palette — warm bone + muted earth tones, single clay accent */
  --bg: #F1ECDF;
  --paper: #EAE2CE;
  --ink: #1A1611;
  --ink-2: #4B4133;
  --muted: #8B7E6B;
  --rule: rgba(26, 22, 17, 0.12);
  --rule-strong: rgba(26, 22, 17, 0.22);
  --accent: #9A5736;          /* clay / terracotta */
  --accent-deep: #6E3D24;
  --accent-soft: rgba(154, 87, 54, 0.10);

  /* Type */
  --serif: "Newsreader", "Source Serif 4", Georgia, serif;
  --sans:  "Geist", "Söhne", "Helvetica Neue", Arial, sans-serif;
  --mono:  "Geist Mono", "IBM Plex Mono", ui-monospace, monospace;

  /* Spacing scale */
  --section-y: 140px;
  --container: 1120px;
  --gutter: 32px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* Density variants set via [data-density] */
:root[data-density="airy"]     { --section-y: 180px; }
:root[data-density="standard"] { --section-y: 140px; }
:root[data-density="compact"]  { --section-y: 96px;  }

/* Palette variants set via [data-palette] */
:root[data-palette="clay"]  { --accent: #9A5736; --accent-deep: #6E3D24; --accent-soft: rgba(154,87,54,0.10); }
:root[data-palette="olive"] { --accent: #5F6A3C; --accent-deep: #3E4727; --accent-soft: rgba(95,106,60,0.10); }
:root[data-palette="ink"]   { --accent: #2B2A26; --accent-deep: #1A1611; --accent-soft: rgba(26,22,17,0.06); }
:root[data-palette="ocean"] { --accent: #2F5364; --accent-deep: #1E3742; --accent-soft: rgba(47,83,100,0.10); }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

/* Subtle paper-grain background, very low opacity */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(26,22,17,0.025) 1px, transparent 1px);
  background-size: 3px 3px;
  z-index: 0;
  mix-blend-mode: multiply;
}

main, header, footer { position: relative; z-index: 1; }

/* ----- Typography ----- */

h1, h2, h3, h4 { margin: 0; font-weight: 400; letter-spacing: -0.01em; }

.display {
  font-family: var(--serif);
  font-weight: 380;
  font-size: clamp(40px, 5.6vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.022em;
  text-wrap: balance;
}

.display em {
  font-style: italic;
  font-weight: 350;
  color: var(--ink-2);
}

.h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.018em;
  text-wrap: balance;
}

.h3 {
  font-family: var(--serif);
  font-weight: 450;
  font-size: clamp(20px, 1.7vw, 24px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-marker {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

p { margin: 0; }
.lede {
  font-family: var(--serif);
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.5;
  color: var(--ink-2);
  font-weight: 380;
  letter-spacing: -0.005em;
  text-wrap: pretty;
}
.body { color: var(--ink-2); font-size: 16.5px; line-height: 1.6; text-wrap: pretty; }
.body strong { color: var(--ink); font-weight: 500; }

/* ----- Layout primitives ----- */

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section { padding: var(--section-y) 0; }
section + section { padding-top: 0; }

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 56px;
  max-width: 760px;
}

.section-head .row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.section-head .row .rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
  max-width: 80px;
}

.hairline { height: 1px; background: var(--rule); border: 0; margin: 0; }

/* ----- Header / Nav ----- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms var(--ease), background 240ms var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--rule); }

.nav {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.wordmark .mark {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 450;
  letter-spacing: -0.015em;
  line-height: 1;
}
.wordmark .mark em { font-style: italic; color: var(--accent); }
.wordmark .tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
  letter-spacing: -0.005em;
  transition: color 180ms var(--ease);
}
.nav-links a:hover { color: var(--ink); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 760px) {
  .nav-links { display: none; }
}

/* ----- Buttons ----- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  padding: 12px 20px;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 220ms var(--ease), background 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease);
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { background: var(--accent-deep); transform: translateY(-1px); }

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-strong);
}
.btn-secondary:hover { border-color: var(--ink); }

.btn-link {
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
  padding-bottom: 2px;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}
.btn-link:hover { border-color: var(--accent); color: var(--accent); }

.arrow {
  display: inline-block;
  width: 14px;
  height: 14px;
  position: relative;
  top: 1px;
}

/* ----- Hero ----- */

.hero {
  padding-top: 120px;
  padding-bottom: 140px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.hero h1 { max-width: 18ch; }
.hero .lede { max-width: 56ch; margin-top: 8px; }

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 12px;
}

.hero-proof {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px;
  align-items: center;
}
.hero-proof .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero-proof .stat {
  font-family: var(--serif);
  font-size: clamp(20px, 2.1vw, 26px);
  line-height: 1.25;
  color: var(--ink);
  font-weight: 400;
  letter-spacing: -0.012em;
  text-wrap: balance;
}
.hero-proof .stat em { color: var(--accent); font-style: italic; }

@media (max-width: 640px) {
  .hero { padding-top: 80px; padding-bottom: 100px; }
  .hero-proof { grid-template-columns: 1fr; gap: 12px; }
}

/* ----- Services (What I do) ----- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
}
.service {
  padding: 40px 0 40px 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  align-items: start;
}
.service:nth-child(odd)  { padding-right: 48px; border-right: 1px solid var(--rule); padding-left: 0; }
.service:nth-child(even) { padding-left: 48px; }

.service .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
  padding-top: 6px;
  font-variant-numeric: tabular-nums;
}
.service h3 { color: var(--ink); margin-bottom: 10px; }
.service p { color: var(--ink-2); font-size: 15.5px; line-height: 1.55; }
.service .bullets {
  margin-top: 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}
.service .bullets li {
  font-size: 14px;
  color: var(--muted);
  padding-left: 14px;
  position: relative;
}
.service .bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.6em;
  width: 6px; height: 1px;
  background: var(--muted);
}

@media (max-width: 760px) {
  .services-grid { grid-template-columns: 1fr; }
  .service, .service:nth-child(odd), .service:nth-child(even) {
    padding: 32px 0; border-right: 0;
  }
}

/* ----- Problems ----- */

.problems {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.problem {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
  align-items: start;
}
.problem:last-child { border-bottom: 1px solid var(--rule); }
.problem .marker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding-top: 12px;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}
.problem blockquote {
  margin: 0;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 380;
  font-size: clamp(20px, 2.0vw, 26px);
  line-height: 1.35;
  color: var(--ink);
  letter-spacing: -0.012em;
  text-wrap: pretty;
  max-width: 36ch;
}
.problem blockquote::before { content: "\201C"; color: var(--accent); margin-right: 2px; }
.problem blockquote::after  { content: "\201D"; color: var(--accent); margin-left: 2px; }

@media (max-width: 640px) {
  .problem { grid-template-columns: 1fr; gap: 6px; }
}

/* ----- Who I work with (ICP) ----- */

.icp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.icp-card {
  padding: 32px 28px 36px;
  background: var(--paper);
  border: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 280ms var(--ease), background 280ms var(--ease), border-color 280ms var(--ease);
}
.icp-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.icp-card .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.icp-card h3 { color: var(--ink); }
.icp-card p { color: var(--ink-2); font-size: 15px; line-height: 1.55; }

.icp-also {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
}
.icp-also .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.icp-also ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.icp-also li { color: var(--ink-2); font-size: 15px; }

@media (max-width: 760px) {
  .icp-grid { grid-template-columns: 1fr; }
  .icp-also { grid-template-columns: 1fr; gap: 12px; }
}

/* ----- How I work ----- */

.engagements {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: start;
}
.engagement-primary {
  border-top: 2px solid var(--ink);
  padding-top: 28px;
}
.engagement-primary .tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.engagement-primary h3 {
  font-family: var(--serif);
  font-size: clamp(26px, 2.4vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin-bottom: 14px;
  color: var(--ink);
}
.engagement-primary p { color: var(--ink-2); font-size: 16px; line-height: 1.6; }
.engagement-primary ul {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.engagement-primary li {
  color: var(--ink-2);
  font-size: 14.5px;
  padding-left: 18px;
  position: relative;
}
.engagement-primary li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.engagement-secondary { display: grid; gap: 28px; }
.engagement-card {
  border-top: 1px solid var(--rule);
  padding-top: 20px;
}
.engagement-card .tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.engagement-card h4 {
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.2;
  letter-spacing: -0.012em;
  color: var(--ink);
  font-weight: 450;
  margin-bottom: 8px;
}
.engagement-card p { color: var(--ink-2); font-size: 14.5px; line-height: 1.55; }

@media (max-width: 860px) {
  .engagements { grid-template-columns: 1fr; gap: 48px; }
}

/* ----- Cases ----- */

.case-primary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 48px 48px 56px;
  background: var(--paper);
  border: 1px solid var(--rule);
  position: relative;
}
.case-primary .case-label {
  display: flex;
  align-items: center;
  gap: 14px;
}
.case-primary .case-label .name {
  font-family: var(--serif);
  font-size: 32px;
  letter-spacing: -0.015em;
  font-weight: 450;
  color: var(--ink);
}
.case-primary .case-label .role {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 28px 0;
}
.case-stat .value {
  font-family: var(--serif);
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--ink);
  font-weight: 380;
}
.case-stat .value em { font-style: italic; color: var(--accent); font-weight: 360; }
.case-stat .label {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.4;
  letter-spacing: -0.005em;
  max-width: 28ch;
}

.case-narrative {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  max-width: 64ch;
}
.case-narrative p {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink-2);
}
.case-narrative .demonstrates {
  border-left: 1px solid var(--rule);
  padding-left: 32px;
}
.case-narrative .demonstrates .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.case-narrative .demonstrates ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.case-narrative .demonstrates li { font-size: 14.5px; color: var(--ink-2); padding-left: 16px; position: relative; }
.case-narrative .demonstrates li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.65em;
  width: 8px; height: 1px;
  background: var(--accent);
}

.case-secondary {
  margin-top: 40px;
  padding: 36px 40px;
  border: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
}
.case-secondary .name {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: -0.012em;
  color: var(--ink);
  font-weight: 450;
}
.case-secondary .meta {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 8px;
}
.case-secondary p { font-size: 15px; line-height: 1.6; color: var(--ink-2); }

@media (max-width: 860px) {
  .case-primary { padding: 36px 28px 40px; }
  .case-stats { grid-template-columns: 1fr; gap: 24px; padding: 24px 0; }
  .case-narrative { grid-template-columns: 1fr; gap: 28px; }
  .case-narrative .demonstrates { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 24px; }
  .case-secondary { grid-template-columns: 1fr; gap: 16px; padding: 28px; }
}

/* ----- About ----- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-bio p { font-size: 16px; line-height: 1.65; color: var(--ink-2); }
.about-bio p + p { margin-top: 16px; }
.about-bio p strong { color: var(--ink); font-weight: 500; }

.credentials {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.credential {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.credential .when {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.credential .role {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink);
  letter-spacing: -0.005em;
  font-weight: 450;
}
.credential .role .at { color: var(--ink-2); font-style: italic; font-weight: 380; }

@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* ----- Contact ----- */

.contact {
  padding: 80px 0 120px;
}
.contact-card {
  border-top: 2px solid var(--ink);
  padding-top: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: end;
}
.contact-card h2 { max-width: 16ch; }
.contact-card .lede { max-width: 44ch; }
.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}
.contact-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
  width: 100%;
}
.contact-row .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-row a {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 4px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
  letter-spacing: -0.01em;
  font-weight: 450;
}
.contact-row a:hover { color: var(--accent); border-color: var(--accent); }

@media (max-width: 860px) {
  .contact-card { grid-template-columns: 1fr; gap: 40px; }
}

/* ----- Footer ----- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 40px 0 56px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-mark {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.01em;
  font-weight: 450;
}
.footer-mark em { font-style: italic; color: var(--accent); }
.footer-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

/* ----- Motion: fade-up on scroll ----- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.reveal.delay-1 { transition-delay: 80ms; }
.reveal.delay-2 { transition-delay: 160ms; }
.reveal.delay-3 { transition-delay: 240ms; }
.reveal.delay-4 { transition-delay: 320ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}