/* =========================================================
   mambaykanu.com
   Monochrome and bone, built around the mK mark and the
   anvil. Archivo for display, Inter for reading.
   ========================================================= */

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

:root {
  --ink:       #121415;
  --charcoal:  #2e3233;
  --slate:     #4a4f52;
  --bone:      #ece7dd;
  --paper:     #f7f6f4;
  --white:     #ffffff;
  --rule:      #e0dcd4;
  --rule-dark: rgba(236, 231, 221, 0.16);

  --text:      #16191a;
  --text-soft: #51575a;
  --on-dark:       #f2efe9;
  --on-dark-soft:  rgba(242, 239, 233, 0.72);

  --accent:      #c2342b;
  --accent-deep: #9e2820;

  --shell: 1180px;
  --display: 'Archivo', 'Helvetica Neue', Arial, sans-serif;
  --body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --band: clamp(4rem, 8vw, 7.5rem);
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; height: auto; }
picture { display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 0.55em;
}
h1 { font-size: clamp(2.6rem, 7vw, 5.4rem); }
h2 { font-size: clamp(1.9rem, 4vw, 3.1rem); }
h3 { font-size: 1.15rem; letter-spacing: -0.012em; line-height: 1.3; }
p  { margin: 0 0 1.1em; color: var(--text-soft); max-width: 68ch; }
p:last-child { margin-bottom: 0; }

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--ink); color: #fff; padding: 0.75rem 1.25rem; font-size: 0.9rem;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.lede { font-size: clamp(1.08rem, 1.5vw, 1.25rem); max-width: 56ch; }

/* Small structural label. Used where it marks a real section, not as decoration. */
.kicker {
  font-family: var(--display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent);
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.kicker::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--accent);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--body);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1;
  padding: 1.05rem 1.8rem;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn svg { width: 16px; height: 16px; flex: none; }
.btn-solid { background: var(--ink); color: var(--white); }
.btn-solid:hover { background: var(--accent); }
.btn-accent { background: var(--accent); color: var(--white); }
.btn-accent:hover { background: var(--accent-deep); }
.btn-line { background: transparent; color: var(--text); border-color: #c8c3b9; }
.btn-line:hover { border-color: var(--ink); }
.btn-ghost-dark { background: transparent; color: var(--on-dark); border-color: var(--rule-dark); }
.btn-ghost-dark:hover { background: rgba(242,239,233,0.08); border-color: rgba(242,239,233,0.5); }
.btn[disabled] { opacity: 0.55; cursor: progress; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.93);
  backdrop-filter: saturate(170%) blur(12px);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 74px;
}
.brand { display: inline-flex; align-items: center; }
.brand-mark { height: 30px; width: auto; }

.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a {
  font-size: 0.93rem; font-weight: 500; color: var(--text);
  transition: color 0.18s ease;
}
.site-nav a:hover { color: var(--accent); }
.site-nav .nav-cta {
  background: var(--ink); color: var(--white);
  padding: 0.72rem 1.3rem; border-radius: 2px;
}
.site-nav .nav-cta:hover { background: var(--accent); color: var(--white); }

/* Burger */
.nav-toggle {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; margin-right: -0.6rem;
  background: none; border: 0; cursor: pointer; padding: 0 10px;
}
.nav-toggle span {
  display: block; width: 100%; height: 2px; background: var(--ink);
  transition: transform 0.22s ease, opacity 0.18s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(3rem, 6vw, 5.5rem) 0; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero h1 { margin-bottom: 1.5rem; }
.hero-sub { font-size: clamp(1.05rem, 1.4vw, 1.2rem); max-width: 44ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.25rem; }
.hero-figure { position: relative; }
.hero-figure img {
  width: 100%;
  filter: grayscale(100%) contrast(1.04);
}
.hero-tag {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem;
  margin-top: 1.75rem; padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-size: 0.88rem; color: var(--text-soft);
}
.hero-tag span { display: inline-flex; align-items: center; gap: 0.45rem; }
.hero-tag svg { width: 15px; height: 15px; color: var(--accent); flex: none; }

/* ---------- Facets: technologist, entrepreneur, philanthropist ----------
   Sits between the hero and the proof strip, so it carries its own top rule
   rather than a band of padding. */
.facets { padding-block: clamp(2.75rem, 5vw, 4.25rem); }
.facets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(1.75rem, 3.5vw, 3rem);
  padding-top: clamp(2.5rem, 4vw, 3.5rem);
  border-top: 1px solid var(--rule);
}
.facet h2 {
  font-size: clamp(1.25rem, 1.8vw, 1.55rem);
  margin-bottom: 0.65rem;
}
.facet p { font-size: 0.97rem; margin: 0; }
.facet-ico {
  width: 34px; height: 34px; margin-bottom: 1.1rem;
  color: var(--accent);
}
.facet-ico svg { width: 100%; height: 100%; }

/* ---------- Proof strip ---------- */
.proof {
  background: var(--ink);
  color: var(--on-dark);
  padding-block: clamp(2.25rem, 4vw, 3.25rem);
}
.proof-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 2rem;
}
.proof-item { display: flex; flex-direction: column; gap: 0.3rem; }
.proof-n {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(2rem, 3.4vw, 2.9rem); line-height: 1;
  letter-spacing: -0.03em;
}
.proof-l { font-size: 0.88rem; color: var(--on-dark-soft); }

/* ---------- Bands ---------- */
.band { padding-block: var(--band); }
.band-paper { background: var(--paper); }
.band-bone  { background: var(--bone); }
.band-dark  { background: var(--charcoal); color: var(--on-dark); }
.band-ink   { background: var(--ink); color: var(--on-dark); }
.band-dark h2, .band-ink h2, .band-dark h3, .band-ink h3 { color: var(--on-dark); }
.band-dark p, .band-ink p { color: var(--on-dark-soft); }
.band-dark .kicker, .band-ink .kicker { color: #e98b82; }
.band-dark .kicker::before, .band-ink .kicker::before { background: #e98b82; }

.band-head { max-width: 46rem; margin-bottom: clamp(2.5rem, 4vw, 3.5rem); }
.band-head h2 { max-width: 20ch; }

/* ---------- What I do ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.pillar {
  padding: 2rem 1.75rem;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 3px;
}
.pillar-ico {
  width: 40px; height: 40px; margin-bottom: 1.4rem;
  color: var(--accent);
}
.pillar-ico svg { width: 100%; height: 100%; }
.pillar h3 { margin-bottom: 0.6rem; }
.pillar p { font-size: 0.96rem; margin: 0; }

/* ---------- Ventures ---------- */
.ventures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}
.venture {
  display: flex; flex-direction: column;
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.venture:hover { border-color: var(--ink); transform: translateY(-2px); }
.venture-art {
  display: flex; align-items: center; justify-content: center;
  height: 150px; padding: 1.5rem;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.venture-art img { max-height: 100%; width: auto; }
.venture-art--dark { background: var(--charcoal); }
.venture-body { padding: 1.5rem; display: flex; flex-direction: column; flex: 1; gap: 0.55rem; }
.venture-body h3 { margin: 0; }
.venture-body p { font-size: 0.95rem; margin: 0; }
.venture-role {
  margin-top: auto; padding-top: 1rem;
  font-size: 0.78rem; font-weight: 500; color: var(--text-soft);
}
.venture-role::before {
  content: ""; display: block; width: 24px; height: 2px;
  background: var(--accent); margin-bottom: 0.7rem;
}

/* ---------- Tools ---------- */
.tools {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}
.tool > a {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas: "ico name" "desc desc";
  column-gap: 0.9rem; row-gap: 0.65rem;
  align-items: center; height: 100%;
  padding: 1.35rem;
  background: rgba(242, 239, 233, 0.045);
  border: 1px solid var(--rule-dark);
  border-radius: 3px;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}
.tool > a:hover {
  border-color: rgba(242,239,233,0.45);
  background: rgba(242, 239, 233, 0.08);
}
.tool img {
  grid-area: ico; width: 44px; height: 44px; border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(242,239,233,0.14);
}
.tool-name { grid-area: name; font-family: var(--display); font-weight: 600; font-size: 1.02rem; color: var(--on-dark); }
.tool-desc { grid-area: desc; font-size: 0.9rem; color: var(--on-dark-soft); line-height: 1.5; }

/* ---------- Story ---------- */
.story {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.story-figure img { width: 100%; }
.story-body p { font-size: 1.04rem; }
.pullquote {
  margin: 2rem 0 0;
  padding-left: 1.5rem;
  border-left: 3px solid var(--accent);
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--text);
  max-width: 42ch;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem); align-items: start;
}
.contact-intro h2 { max-width: 16ch; }
.contact-direct { font-size: 0.97rem; margin-top: 1.5rem; }
.contact-direct a { color: #e98b82; border-bottom: 1px solid rgba(233,139,130,0.4); }
.contact-direct a:hover { border-bottom-color: #e98b82; }

.form { display: grid; gap: 1.05rem; }
.field { display: grid; gap: 0.42rem; }
.field label { font-size: 0.87rem; font-weight: 500; color: var(--on-dark); }
.field .optional { color: rgba(242,239,233,0.5); font-weight: 400; }
.field input, .field textarea, .field select {
  width: 100%; font: inherit; font-size: 0.96rem; color: var(--on-dark);
  background: rgba(242,239,233,0.06);
  border: 1px solid rgba(242,239,233,0.18);
  border-radius: 2px; padding: 0.82rem 0.9rem;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}
.field select {
  appearance: none; cursor: pointer; padding-right: 2.5rem;
  background-image: linear-gradient(45deg, transparent 50%, var(--on-dark-soft) 50%),
                    linear-gradient(135deg, var(--on-dark-soft) 50%, transparent 50%);
  background-position: calc(100% - 20px) calc(50% + 2px), calc(100% - 15px) calc(50% + 2px);
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.field select option { background: var(--ink); color: var(--on-dark); }
.field textarea { resize: vertical; min-height: 118px; line-height: 1.6; }
.field input:hover, .field textarea:hover, .field select:hover { border-color: rgba(242,239,233,0.32); }
/* background-color, not the shorthand: the select arrow is a background-image. */
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  background-color: rgba(242,239,233,0.1);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(194,52,43,0.25);
}
.field input[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color: #e98b82; }
.field-error { margin: 0; font-size: 0.83rem; color: #f0a79f; max-width: none; }

.trap { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.form-status {
  margin: 0.2rem 0 0; font-size: 0.92rem; padding: 0.85rem 1rem;
  border-radius: 2px; border: 1px solid transparent; max-width: none;
}
.form-status[data-tone="ok"] {
  color: #bfe3c6; background: rgba(93,173,118,0.12); border-color: rgba(93,173,118,0.35);
}
.form-status[data-tone="error"] {
  color: #f2b3aa; background: rgba(194,52,43,0.14); border-color: rgba(194,52,43,0.4);
}
.form-status a { color: inherit; text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: var(--on-dark-soft); padding-block: 3rem 1.75rem; }
.footer-inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 1.5rem; padding-bottom: 1.75rem; border-bottom: 1px solid var(--rule-dark);
}
.footer-mark { height: 28px; width: auto; filter: invert(1); }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1.6rem; }
.footer-nav a { font-size: 0.9rem; color: var(--on-dark-soft); transition: color 0.18s ease; }
.footer-nav a:hover { color: var(--on-dark); }
.colophon {
  margin: 1.5rem 0 0; font-size: 0.83rem;
  color: rgba(242,239,233,0.45); max-width: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .hero-grid, .story, .contact-grid { grid-template-columns: 1fr; }
  .hero-figure { order: -1; }
  .story-figure { max-width: 420px; }
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .header-inner { flex-wrap: wrap; }
  .site-nav {
    display: none; order: 3; width: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    padding-bottom: 0.75rem;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 0.9rem 0; border-top: 1px solid var(--rule); }
  .site-nav .nav-cta { margin-top: 0.85rem; text-align: center; border-top: 0; }
  .footer-inner { justify-content: center; text-align: center; }
  .colophon { text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Contextual note under the pillars */
.work-note {
  display: flex; align-items: flex-start; gap: 0.7rem;
  margin-top: 2rem; font-size: 0.93rem; color: var(--text-soft);
  max-width: 60ch;
}
.work-note svg { width: 17px; height: 17px; color: var(--accent); flex: none; margin-top: 0.2rem; }
.work-note a { color: var(--text); border-bottom: 1px solid var(--accent); padding-bottom: 1px; }
.work-note a:hover { color: var(--accent); }

/* The note's text lives in one span so the flex row does not split the sentence. */
.work-note > span { display: block; }

/* ---------- The Anvil signup ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap;
}

.anvil { background: var(--white); }
.anvil-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  padding: clamp(2rem, 4vw, 3.25rem);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
}
.anvil-art {
  width: 128px; height: 128px;
  margin-top: 0.4rem;
  border-radius: 20px; overflow: hidden;
  box-shadow: 0 0 0 1px rgba(22,25,26,0.1);
}
.anvil-art img { width: 100%; height: 100%; object-fit: cover; }
.anvil-body h2 { max-width: 18ch; }
.anvil-body > p { max-width: 62ch; }

.subscribe { margin-top: 1.75rem; }
.subscribe-row { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.subscribe-row input {
  flex: 1 1 260px;
  font: inherit; font-size: 0.97rem; color: var(--text);
  background: var(--white);
  border: 1px solid #cfcac1;
  border-radius: 2px; padding: 1rem 1rem;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.subscribe-row input::placeholder { color: #9b968d; }
.subscribe-row input:hover { border-color: #ada89e; }
.subscribe-row input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(194,52,43,0.18);
}
.subscribe-row input[aria-invalid="true"] { border-color: var(--accent); }
.subscribe-row .btn { flex: 0 0 auto; }
.subscribe-note { margin: 0.85rem 0 0; font-size: 0.85rem; color: var(--text-soft); }
/* The shared status block is styled for dark bands; this one sits on paper. */
.anvil .form-status[data-tone="ok"] {
  color: #2f6b45; background: rgba(93,173,118,0.14); border-color: rgba(93,173,118,0.45);
}
.anvil .form-status[data-tone="error"] {
  color: #93261e; background: rgba(194,52,43,0.08); border-color: rgba(194,52,43,0.35);
}

@media (max-width: 760px) {
  .anvil-inner { grid-template-columns: 1fr; }
  .anvil-art { width: 96px; height: 96px; }
}

/* ---------- Portfolio band ---------- */
.pf-band {
  display: grid; grid-template-columns: 1.35fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem); align-items: start;
}
.pf-band h2 { max-width: 18ch; }
.pf-actions { margin-top: 2rem; }
.pf-sectors { list-style: none; margin: 0; padding: 0; }
.pf-sectors li {
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(22,25,26,0.12);
  font-size: 1rem; color: var(--text);
}
.pf-sectors li:first-child { border-top: 2px solid var(--accent); }
.pf-sectors .pf-more { color: var(--text-soft); font-style: italic; border-bottom: 0; }

/* ---------- Book library ---------- */
.books {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1px;
  /* White, not the rule colour: the row rarely divides evenly and a tinted
     container would show the leftover cells as a block. */
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow: hidden;
}
.book {
  display: grid; gap: 0.3rem;
  padding: 1.35rem 1.4rem;
  background: var(--white);
  box-shadow: 0 0 0 1px var(--rule);
}
.book-title { font-family: var(--display); font-weight: 600; font-size: 1rem; color: var(--text); line-height: 1.3; }
.book-author { font-size: 0.82rem; color: var(--accent-deep); font-weight: 500; }
.book-note { font-size: 0.9rem; color: var(--text-soft); line-height: 1.5; margin-top: 0.25rem; }

@media (max-width: 940px) {
  .pf-band { grid-template-columns: 1fr; }
}

/* Preview shelf + read-more links */
.more-link { margin-top: 2.25rem; }
.shelf--preview { grid-template-columns: repeat(auto-fill, minmax(165px, 1fr)); }