/* ============================================================
   cromatikap.dev — dark-first technical atelier
   ============================================================ */

/* ================= THEME TOKENS ================= */

:root {
  /* dark is the primary identity */
  --bg: #0e0e0c;
  --text: #e9e4da;
  --muted: #8f8c84;
  --surface: #141412;
  --border: #262622;
  --accent: #c9a26b;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  --font-sans:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  --font-serif:
    "Iowan Old Style",
    "Palatino Linotype",
    Palatino,
    Georgia,
    serif;
  --font-mono:
    ui-monospace,
    "SF Mono",
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f4ef;
    --text: #1c1b18;
    --muted: #6d6a62;
    --surface: #efece5;
    --border: #d8d4ca;
    --accent: #8a6a38;
  }
}

/* ================= BASE ================= */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: var(--space-md) 0 var(--space-xs);
}

p {
  margin: 0 0 var(--space-sm);
}

ul,
ol {
  margin: 0;
  padding: 0;
}

a {
  color: var(--text);
  text-decoration-color: var(--border);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.container {
  max-width: 62rem;
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

/* mono utility voice */
.kicker,
.hero-meta,
.section-num,
.row-index,
.tile-tag,
.work-links,
.work-note,
.offer-duration,
.booking-note,
.nav-list,
.footer-links {
  font-family: var(--font-mono);
}

/* ================= HEADER ================= */

.site-header {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-xs);
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
}

.brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.brand-tld {
  color: var(--muted);
  font-weight: 400;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  list-style: none;
  font-size: 0.8125rem;
}

.nav-list a {
  text-decoration: none;
  color: var(--muted);
}

.nav-list a:hover {
  color: var(--accent);
}

.nav-book {
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.125rem 0.625rem;
}

/* ================= HERO ================= */

.hero {
  padding: var(--space-lg) 0 var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.kicker {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.kicker::before {
  content: "// ";
  color: var(--muted);
}

.hero h1 {
  max-width: 46rem;
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  color: var(--muted);
  font-size: 1.0625rem;
  max-width: 38rem;
  margin-bottom: var(--space-md);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.text-link {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
}

.text-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---- hero pencil sketch ---- */

.hero-diagram {
  margin: 0;
}

.hero-diagram img {
  display: block;
  width: 100%;
  height: auto;
  /* sketch is graphite on white: invert to chalk on black,
     then screen-blend so the black background vanishes into the page */
  filter: invert(0.92);
  mix-blend-mode: screen;
  opacity: 0.9;
}

@media (prefers-color-scheme: light) {
  .hero-diagram img {
    /* multiply makes the white background vanish on light paper */
    filter: none;
    mix-blend-mode: multiply;
    opacity: 1;
  }
}

/* ---- icons ---- */

.sprite {
  display: none;
}

.icon {
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  color: var(--text);
}

.icon * {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.25;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon .i-dot {
  fill: currentColor;
  stroke: none;
}

/* ---- hero meta: icon row ---- */

.hero-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: var(--space-md);
  margin: 0;
}

.hero-meta li {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* ================= BUTTONS ================= */

.button {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--text);
  text-decoration: none;
}

.button-primary {
  background: var(--text);
  color: var(--bg);
}

.button-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

/* ================= SECTIONS ================= */

.section {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.section-num {
  font-size: 0.75rem;
  color: var(--accent);
}

.section-num::after {
  content: " /";
  color: var(--muted);
}

/* ================= HELP — numbered rows ================= */

.row-list {
  list-style: none;
  border-top: 1px solid var(--border);
}

.row {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0 var(--space-sm);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

.row-index {
  font-size: 0.8125rem;
  color: var(--muted);
  padding-top: 0.25rem;
}

.row h3 {
  grid-column: 2;
}

.row p {
  grid-column: 2;
  color: var(--muted);
  margin: var(--space-xs) 0 0;
  max-width: 38rem;
}

/* ================= FOCUS — hairline tile grid ================= */

.tile-grid {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.tile {
  background: var(--bg);
  padding: var(--space-md);
}

.tile-icon {
  display: block;
  width: 1.75rem;
  height: 1.75rem;
  margin-bottom: var(--space-sm);
}

.tile-tag {
  display: inline-block;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.tile h3 {
  margin-bottom: var(--space-xs);
}

.tile p {
  color: var(--muted);
  margin: 0;
}

/* ================= WORK — editorial rows ================= */

.work-list {
  list-style: none;
  border-top: 1px solid var(--border);
}

.work-item {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0 var(--space-sm);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

.work-icon {
  grid-row: 1 / span 3;
  margin-top: 0.125rem;
}

.work-item h3,
.work-item p {
  grid-column: 2;
}

.work-item p {
  color: var(--muted);
  margin: var(--space-xs) 0 0;
}

.work-links {
  font-size: 0.8125rem;
}

.work-links a {
  color: var(--muted);
  margin-right: var(--space-sm);
}

.work-note {
  color: var(--muted);
}

/* ================= CONSULTING — divided columns ================= */

.offer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.offer {
  background: var(--surface);
  padding: var(--space-md);
}

.offer-background {
  background: var(--bg);
}

.offer-duration {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.offer h3 {
  margin-bottom: var(--space-xs);
}

.offer ul {
  list-style: none;
  color: var(--muted);
  font-size: 0.9375rem;
}

.offer li::before {
  content: "· ";
  color: var(--accent);
}

/* ================= BOOKING ================= */

.section-book {
  border-bottom: none;
}

.booking-text {
  color: var(--muted);
  font-size: 1.0625rem;
  max-width: 36rem;
}

.booking-action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.booking-note {
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0;
}

/* ================= FOOTER ================= */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: var(--space-lg) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.footer-brand {
  font-family: var(--font-mono);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.footer-description {
  color: var(--muted);
  max-width: 32rem;
  font-size: 0.9375rem;
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  list-style: none;
  font-size: 0.8125rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
}

/* ================= RESPONSIVE ================= */

@media (min-width: 40rem) {
  body {
    font-size: 1.0625rem;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 1.875rem;
  }

  .hero {
    padding: var(--space-xl) 0 var(--space-lg);
  }

  .row {
    grid-template-columns: 3rem 16rem 1fr;
    align-items: baseline;
  }

  .row h3 {
    grid-column: 2;
  }

  .row p {
    grid-column: 3;
    margin: 0;
  }

  .tile-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .work-item {
    grid-template-columns: 2.25rem 14rem 1fr auto;
    align-items: baseline;
  }

  .work-icon {
    grid-row: auto;
    align-self: center;
  }

  .work-item h3 {
    grid-column: 2;
  }

  .work-item p {
    grid-column: auto;
    margin: 0;
  }
}

@media (min-width: 60rem) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 25rem);
    align-items: center;
  }

  .offer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ================= REDUCED MOTION ================= */

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none;
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}