/* ============================================================
   Rexo Systems — direction: "Quiet confidence"
   Anthropic-quiet. Warm paper, enormous whitespace, understated
   type, near-monochrome with one sparing accent. Nothing shouts.
   ============================================================ */

:root {
  --paper:   #F5F3EC;
  --paper-2: #FBFAF6;
  --ink:     #0E1B2C;
  --ink-2:   #3A4759;
  --ink-3:   #566270;
  --accent:  #1F5FD6;

  --hair:    rgba(14, 27, 44, 0.12);   /* whisper-thin dividers */
  --hair-2:  rgba(14, 27, 44, 0.07);

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* generous measure + margins are the whole point of this feel */
  --wrap:   1160px;
  --gutter: clamp(1.5rem, 6vw, 8rem);
  --measure: 62ch;
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(1.0625rem, 0.98rem + 0.35vw, 1.1875rem);
  line-height: 1.62;
  letter-spacing: 0.001em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }

::selection { background: rgba(31, 95, 214, 0.14); color: var(--ink); }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: 0.6rem 1rem; border-radius: 0 0 4px 0;
  font: 500 0.85rem/1 var(--sans); z-index: 50;
}
.skip:focus { left: 0; }

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

/* ---------- layout scaffold ---------- */
.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.rule {
  height: 1px;
  background: var(--hair);
  border: 0;
  width: 100%;
}
.rule--accent {
  /* the single, disciplined use of accent up top: a hairline of blue
     that fades to nothing — a signature, not a banner */
  height: 1px;
  background: linear-gradient(90deg, var(--accent) 0, var(--accent) 88px, var(--hair) 88px, var(--hair) 100%);
}

/* mono micro-labels — the "letterhead / dossier" cue */
.idx {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.72em;
  letter-spacing: 0.02em;
  color: var(--accent);
  font-feature-settings: "tnum" 1;
}

/* ============================================================
   MASTHEAD
   ============================================================ */
.masthead {
  padding-top: clamp(1.6rem, 3vw, 2.4rem);
}
.masthead-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: clamp(1.5rem, 3vw, 2.2rem);
}
.brand { display: inline-flex; line-height: 0; }
.brand-mark {
  /* logo is 562x267; keep pixel integrity, just scale it small + calm */
  width: auto;
  height: clamp(30px, 3.4vw, 40px);
}
.masthead-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.4rem, 2.6vw, 2.6rem);
  font-size: 0.95rem;
}
.masthead-nav a {
  text-decoration: none;
  color: var(--ink-2);
  transition: color 160ms ease;
  padding-block: 0.25rem;
}
.masthead-nav a:hover { color: var(--ink); }
.nav-contact {
  color: var(--ink) !important;
  border-bottom: 1px solid var(--hair);
  padding-bottom: 2px;
}
.nav-contact:hover { border-color: var(--accent); }

/* ============================================================
   HERO  — the confidence of saying very little
   ============================================================ */
.hero {
  padding-top: clamp(4.5rem, 12vw, 10.5rem);
  padding-bottom: clamp(4.5rem, 11vw, 9.5rem);
}
.eyebrow {
  margin: 0 0 clamp(2.2rem, 5vw, 3.4rem);
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.eyebrow .idx { letter-spacing: 0.02em; }

.hero-title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--serif);
  font-weight: 340;
  font-size: clamp(2.35rem, 1.1rem + 5vw, 5.25rem);
  line-height: 1.03;
  letter-spacing: -0.018em;
  font-optical-sizing: auto;
  color: var(--ink);
  text-wrap: balance;
  overflow-wrap: break-word;
}
.hero-tagline {
  margin: clamp(1.6rem, 3.5vw, 2.6rem) 0 0;
  font-family: var(--serif);
  font-weight: 380;
  font-style: italic;
  font-size: clamp(1.25rem, 1rem + 0.9vw, 1.7rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink-2);
}
.hero-sub {
  margin: clamp(1.8rem, 3vw, 2.4rem) 0 0;
  max-width: var(--measure);
  font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.2rem);
  line-height: 1.68;
  color: var(--ink-2);
}

/* actions — quiet buttons, no fill except the one primary text-link */
.actions {
  margin-top: clamp(2.6rem, 4.5vw, 3.6rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(1.4rem, 3vw, 2.4rem);
}
.btn {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  line-height: 1;
  transition: color 160ms ease, border-color 160ms ease, gap 200ms ease;
}
.btn-arrow {
  font-family: var(--sans);
  font-weight: 400;
  transition: transform 220ms cubic-bezier(0.2, 0.7, 0.2, 1);
  display: inline-block;
}
.btn--primary {
  color: var(--ink);
  padding-bottom: 6px;
  border-bottom: 1.5px solid var(--ink);
}
.btn--primary:hover { color: var(--accent); border-color: var(--accent); }
.btn--primary:hover .btn-arrow { transform: translateX(4px); }
.btn--quiet {
  color: var(--ink-3);
  padding-bottom: 6px;
  border-bottom: 1px solid transparent;
}
.btn--quiet:hover { color: var(--ink); border-color: var(--hair); }

/* ============================================================
   SECTION GRID  — editorial column with marginalia
   ============================================================ */
.section-grid {
  display: grid;
  grid-template-columns: 12.5rem minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding-top: clamp(4rem, 8vw, 7rem);
  padding-bottom: clamp(4rem, 8vw, 7rem);
}
.section-aside {
  position: sticky;
  top: 2.5rem;
  align-self: start;
}
.marker {
  margin: 0 0 0.5rem;
  font-family: var(--mono);
  font-size: 0.95rem;
}
.marker-label {
  margin: 0;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.section-body { max-width: var(--measure); }
.section-title {
  margin: 0 0 clamp(1.8rem, 3.5vw, 2.6rem);
  font-family: var(--serif);
  font-weight: 360;
  font-size: clamp(1.7rem, 1.2rem + 1.8vw, 2.85rem);
  line-height: 1.1;
  letter-spacing: -0.014em;
  color: var(--ink);
  text-wrap: balance;
}

/* ---------- About / the letter ---------- */
.letter {
  margin: 0;
  border: 0;
  padding: 0;
}
.letter p {
  margin: 0 0 1.35rem;
  font-size: clamp(1.1rem, 1rem + 0.4vw, 1.3rem);
  line-height: 1.66;
  color: var(--ink-2);
}
.letter p:first-child::first-letter {
  /* a single restrained flourish: a serif drop-cap */
  font-family: var(--serif);
  font-weight: 360;
  font-size: 3.1em;
  line-height: 0.78;
  float: left;
  padding: 0.06em 0.14em 0 0;
  color: var(--ink);
}
.signature {
  margin-top: 2rem;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.15rem;
  color: var(--ink);
}

/* ---------- Beliefs / the creed ---------- */
.creed {
  list-style: none;
  margin: 0;
  padding: 0;
}
.creed-item {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 1.2rem;
  padding: clamp(1.6rem, 3vw, 2.2rem) 0;
  border-top: 1px solid var(--hair-2);
}
.creed-item:first-child { border-top: 0; padding-top: 0; }
.creed-no {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--accent);
  padding-top: 0.35rem;
  letter-spacing: 0.04em;
}
.creed-text h3 {
  margin: 0 0 0.5rem;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.2rem, 1rem + 0.7vw, 1.5rem);
  line-height: 1.2;
  letter-spacing: -0.008em;
  color: var(--ink);
}
.creed-text p {
  margin: 0;
  color: var(--ink-2);
  line-height: 1.62;
}

/* ---------- What we build / roster ---------- */
.roster-item {
  padding: clamp(1.8rem, 3vw, 2.4rem) 0;
  border-top: 1px solid var(--hair-2);
}
.roster-item:first-of-type { border-top: 0; padding-top: 0; }
.roster-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.9rem;
}
.roster-name {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.4rem, 1.1rem + 1vw, 1.9rem);
  letter-spacing: -0.01em;
  color: var(--ink);
}
.tag {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.28em 0.6em;
  border: 1px solid var(--hair);
  border-radius: 999px;
  color: var(--ink-3);
  white-space: nowrap;
  transform: translateY(-0.12em);
}
.tag--live {
  color: var(--accent);
  border-color: rgba(31, 95, 214, 0.28);
}
.tag--live::before {
  content: "";
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 0.5em;
  transform: translateY(-1px);
}
.roster-desc {
  margin: 0 0 1rem;
  max-width: 54ch;
  color: var(--ink-2);
  line-height: 1.62;
}
.roster-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--hair);
  padding-bottom: 3px;
  transition: color 160ms ease, border-color 160ms ease, gap 200ms ease;
}
.roster-link:hover { color: var(--accent); border-color: var(--accent); }
.roster-link:hover .btn-arrow { transform: translateX(3px); }
.roster-link--muted {
  color: var(--ink-3);
  border-bottom-style: dashed;
  cursor: default;
}
.roster-link--muted:hover { color: var(--ink-3); border-color: var(--hair); }

/* ---------- Close / contact ---------- */
.close-title { margin-bottom: 1.2rem; }
.close-line {
  margin: 0 0 1.6rem;
  color: var(--ink-2);
  max-width: 46ch;
}
.contact-address {
  display: inline-block;
  font-family: var(--serif);
  font-weight: 360;
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.6rem);
  letter-spacing: -0.014em;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1.5px solid var(--hair);
  padding-bottom: 4px;
  transition: color 160ms ease, border-color 160ms ease;
}
.contact-address:hover { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   COLOPHON / FOOTER — stays on paper, whisper quiet
   ============================================================ */
.colophon {
  padding-top: clamp(3rem, 6vw, 5rem);
  padding-bottom: clamp(2.4rem, 5vw, 4rem);
}
.colophon-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem 2.4rem;
  padding-top: clamp(1.6rem, 3vw, 2.2rem);
}
.colophon-brand {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.colophon-note {
  margin: 0;
  color: var(--ink-3);
  font-size: 0.92rem;
}
.colophon-mail {
  margin: 0 0 0 auto;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.colophon-mail a {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid var(--hair);
  padding-bottom: 2px;
  transition: color 160ms ease, border-color 160ms ease;
}
.colophon-mail a:hover { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .section-grid {
    grid-template-columns: 1fr;
    gap: clamp(1.4rem, 4vw, 2.2rem);
  }
  .section-aside {
    position: static;
    display: flex;
    align-items: baseline;
    gap: 0.9rem;
    top: auto;
  }
  .marker { margin: 0; }
  .marker::after {
    content: "·";
    margin-left: 0.9rem;
    color: var(--ink-3);
  }
}

@media (max-width: 620px) {
  .masthead-nav { gap: 1.1rem; font-size: 0.9rem; }
  .masthead-nav a:not(.nav-contact) { display: none; }
  .creed-item { grid-template-columns: 2.4rem 1fr; gap: 0.9rem; }
  .actions { gap: 1.4rem; }
}

@media (max-width: 400px) {
  .masthead-row { gap: 1rem; }
}