/* ─────────────────────────────────────────────────────────────────────
   thresholds.co — production stylesheet
   Direction B (Threshold). Hanken Grotesk + Geist Mono. White + ink + moss.
   Mobile-first. One file, no preprocessor.
   ─────────────────────────────────────────────────────────────────── */

/* Tokens ------------------------------------------------------------- */
:root {
  --bg: #ffffff;
  --panel: #f6f5f1;
  --panel-deep: #eeede6;
  --ink: #0a0a0a;
  --ink-2: #2a2a2a;
  --mute: #7c7c76;
  --rule: rgba(10, 10, 10, 0.10);
  --rule-light: rgba(10, 10, 10, 0.05);
  --accent: oklch(48% 0.06 150);
  --accent-soft: oklch(48% 0.06 150 / 0.10);

  --sans: "Hanken Grotesk", "Söhne", "Inter Tight", Helvetica, Arial, sans-serif;
  --mono: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;

  --pad-x: clamp(24px, 5vw, 64px);
  --rail: 120px;           /* left index column on desktop */
  --container-max: 1440px;

  --rad-pill: 999px;
}

/* Reset-ish ---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img, svg { display: block; max-width: 100%; }

/* Accessibility ----------------------------------------------------- */
.sr-only {
  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: -9999px; top: 0;
  background: var(--ink); color: var(--bg);
  padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 16px; top: 16px; }

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

/* Utility ------------------------------------------------------------ */
.mono { font-family: var(--mono); }
.muted { color: var(--mute); }
.accent { color: var(--accent); }
.ta-right { text-align: right; }

/* Wordmark ---------------------------------------------------------- */
/* The Slipped wordmark: "threshlds" + filled disc + "co". The disc is the
   missing 'o' AND the period in '.co' — one mark, two jobs. */
.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--ink);
}
.wordmark .wm-text { display: inline-block; }
.wordmark .wm-dot {
  display: inline-block;
  /* Sized to roughly match the x-height of a lowercase 'o' in the wordmark —
     reads as a letter, not as a tiny period. The bottom margin nudges it onto
     the baseline so it sits with the surrounding glyphs rather than floating. */
  width: 0.42em;
  height: 0.42em;
  border-radius: 50%;
  background: currentColor;
  margin: 0 0.08em 0.08em;
  align-self: center;
  flex-shrink: 0;
}
.wordmark-light { color: var(--bg); }

/* Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-pill { border-radius: var(--rad-pill); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: #1a1a1a; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn-ghost:hover { border-color: var(--ink); }
.dot-accent {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
}

/* Header / Nav ------------------------------------------------------- */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  padding: 20px var(--pad-x);
  border-bottom: 1px solid var(--rule);
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
}
.site-nav {
  display: none;       /* mobile: hidden */
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
}
.site-nav a:hover { color: var(--accent); }
.nav-toggle {
  display: inline-flex; flex-direction: column; gap: 5px;
  background: transparent; border: 0; cursor: pointer; padding: 6px;
}
.nav-toggle span { display: block; width: 22px; height: 1.6px; background: var(--ink); }
.site-header .btn { display: none; }    /* desktop only */

.mobile-nav {
  display: flex; flex-direction: column; gap: 4px;
  padding: 16px var(--pad-x) 20px;
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
}
.mobile-nav a { padding: 12px 0; font-size: 17px; font-weight: 500; border-top: 1px solid var(--rule-light); }
.mobile-nav a:first-child { border-top: 0; }

@media (min-width: 880px) {
  .site-nav { display: flex; }
  .site-header .btn { display: inline-flex; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none !important; }
}

/* Section heads ----------------------------------------------------- */
.hero-meta {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mute);
  line-height: 1.6;
}
.hero-meta .num { display: block; }
.hero-meta .num-label { color: var(--accent); }

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 0 var(--pad-x);
  margin-bottom: 40px;
}
.section-head-3col { grid-template-columns: 1fr; gap: 20px; align-items: end; }

.section-h2 {
  font-family: var(--sans);
  font-size: clamp(36px, 5.6vw, 56px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0 0 18px;
  text-wrap: pretty;
}
.section-blurb {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 640px;
}
.section-aside {
  font-size: 12px;
  color: var(--mute);
  letter-spacing: 0.04em;
  max-width: 320px;
}

@media (min-width: 980px) {
  .section-head { grid-template-columns: var(--rail) 1fr; gap: 40px; }
  .section-head-3col { grid-template-columns: var(--rail) 1fr 1fr; }
  .section-aside { text-align: right; justify-self: end; }
}

/* Hero -------------------------------------------------------------- */
.hero {
  padding: clamp(64px, 12vw, 140px) var(--pad-x) clamp(56px, 10vw, 120px);
  display: grid;
  gap: 20px;
}
.hero .hero-meta { grid-column: 1; }
.hero .kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mute);
  margin: 0 0 8px;
}
.hero-h1 {
  font-family: var(--sans);
  font-size: clamp(48px, 11vw, 124px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.92;
  text-wrap: pretty;
  margin: 8px 0 0;
}
.hero-h1 .accent { color: var(--accent); }
.hero-h1 .hero-emph {
  /* Grayscale emphasis: same hue family as the body, set apart by tone alone.
     Recedes slightly against the heavy ink of the rest of the headline. */
  color: var(--mute);
}
.hero-blurb {
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 520px;
  margin: 28px 0 0;
}
.hero-ctas {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-top: 28px;
}
.hero-ctas .btn { padding: 16px 24px; font-size: 15px; }
.hero-sub {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mute);
  margin-top: 20px;
  display: inline-flex; align-items: center; gap: 10px;
}

@media (min-width: 980px) {
  .hero {
    grid-template-columns: var(--rail) 1fr;
    grid-template-areas:
      "meta kicker"
      "meta h1"
      "meta blurb"
      "meta ctas"
      "meta sub";
    column-gap: 40px;
    row-gap: 12px;
  }
  .hero .hero-meta { grid-area: meta; }
  .hero .kicker    { grid-area: kicker; margin-bottom: 12px; }
  .hero-h1         { grid-area: h1; margin-top: 0; }
  .hero-blurb      { grid-area: blurb; max-width: 460px; }
  .hero-ctas       { grid-area: ctas; }
  .hero-sub        { grid-area: sub; }
}

/* Threshold rule ---------------------------------------------------- */
.threshold-rule {
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 12px; align-items: center;
  padding: 0 var(--pad-x);
  margin: clamp(40px, 6vw, 80px) 0;
}
.threshold-rule .t-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--accent);
  white-space: nowrap;
}
.threshold-rule .t-line { height: 1px; background: var(--accent); opacity: 0.45; }

/* Ladder ------------------------------------------------------------ */
.ladder { padding-bottom: clamp(40px, 6vw, 80px); }

.tier-list { display: block; }
.tier { border-top: 1px solid var(--rule); position: relative; }
.tier:last-child { border-bottom: 1px solid var(--rule); }
.tier-dest { background: var(--panel); }
.tier-dest::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--accent);
}

.tier details > summary {
  list-style: none;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  padding: 24px var(--pad-x);
  cursor: pointer;
  align-items: center;
}
.tier details > summary::-webkit-details-marker { display: none; }
.tier details > summary:hover { background: var(--rule-light); }

.tier-num {
  font-size: 11px; letter-spacing: 0.1em; color: var(--mute);
}
.tier-dest .tier-num { color: var(--accent); }
.tier-name-wrap {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  min-width: 0;
}
.tier-name {
  font-family: var(--sans);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1;
}
.tier-length {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute);
  align-self: center;
  display: none;
}
.tier-pill {
  display: none;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 4px 10px;
  border: 1px solid var(--accent);
  border-radius: var(--rad-pill);
  align-self: center;
}
.tier-toggle {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--ink-2);
  transition: transform .2s ease;
  text-align: right;
  width: 24px;
}
.tier-dest .tier-toggle { color: var(--accent); }
.tier details[open] .tier-toggle { transform: rotate(45deg); }

.tier-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 0 var(--pad-x) 28px;
}
.tier-body p {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 640px;
}
.tier-body aside {
  font-size: 14px; color: var(--ink-2); line-height: 1.55;
}
.tier-body .label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 6px;
}

@media (min-width: 720px) {
  .tier details > summary {
    grid-template-columns: 80px 1fr auto auto;
    column-gap: 24px;
    padding: 28px var(--pad-x);
  }
  .tier-length { display: inline; white-space: nowrap; }
  .tier-dest .tier-pill { display: inline-block; }
  .tier-body {
    grid-template-columns: 80px 1fr 280px;
    column-gap: 24px;
  }
  .tier-body > p { grid-column: 2; }
  .tier-body > aside { grid-column: 3; }
}

/* Upcoming ---------------------------------------------------------- */
.upcoming {
  padding: 0 0 clamp(60px, 8vw, 100px);
}

.upcoming-table {
  margin: 0 var(--pad-x);
  border: 1px solid var(--rule);
}

.upcoming-thead {
  display: none;       /* mobile: cards, not a table */
}

.upcoming-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px 18px;
  padding: 20px;
  border-bottom: 1px solid var(--rule);
}
.upcoming-row:last-child { border-bottom: 0; }

.up-date-block { grid-column: 1; grid-row: 1 / span 3; }
.up-date {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
}
.up-date-block .up-month {
  margin-top: 4px;
}
.up-month-col {
  display: none;     /* mobile: month sits under the date; this column hides */
}
.up-month {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--mute);
}
.up-kind {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.up-title { font-size: 15px; font-weight: 500; }
.up-title-link { color: inherit; text-decoration: none; border-bottom: 1px solid var(--rule); transition: border-color 0.15s ease; }
.up-title-link:hover { border-bottom-color: currentColor; }
.up-title-arrow { font-family: var(--mono); opacity: 0.55; }
.up-seats {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--mute);
}
.up-seats.is-open { color: var(--accent); }
.up-partner, .up-location { font-size: 12px; color: var(--mute); }

@media (min-width: 880px) {
  .upcoming-thead {
    display: grid;
    grid-template-columns: 90px 130px 160px 1fr 200px 100px;
    column-gap: 24px;
    padding: 14px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--rule);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--mute);
  }
  .upcoming-row {
    grid-template-columns: 90px 130px 160px 1fr 200px 100px;
    column-gap: 24px;
    padding: 24px;
    align-items: center;
    gap: 0;
  }
  .up-date-block { grid-row: auto; }
  .up-date-block .up-month { display: none; }   /* hide inline; use dedicated column */
  .up-month-col { display: block; }
  .up-date { font-size: 26px; }
  .up-title { font-size: 16px; }
}

/* About ------------------------------------------------------------- */
.about {
  background: var(--panel);
  padding: clamp(60px, 8vw, 100px) 0;
}

.people {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 0 var(--pad-x);
  margin-bottom: 40px;
}

.person {
  position: relative;
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: 36px 28px;
  /* Flex column so the bio expands to push the meta bar to the bottom of
     the card. Grid items already stretch to equal height, so the bars
     end up aligned horizontally across both people cards. */
  display: flex;
  flex-direction: column;
}
.person-top { position: relative; }
.person-bio { flex: 1 1 auto; }
.person-ornament {
  position: absolute;
  top: -28px; right: -28px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: var(--ink);
  opacity: 0.06;
  pointer-events: none;
}
.person-num {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.person-name {
  font-family: var(--sans);
  font-size: clamp(26px, 3.5vw, 42px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0 0 8px;
}
.person-role { font-size: 11px; letter-spacing: 0.06em; color: var(--ink-2); }
.person-sub { font-size: 11px; letter-spacing: 0.06em; color: var(--mute); margin-bottom: 22px; }
.person-bio { font-size: 15px; line-height: 1.6; color: var(--ink-2); margin: 0 0 22px; max-width: 460px; }
.person-meta {
  display: flex; flex-wrap: wrap; gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mute);
  /* Pin to the bottom of the card so the rule above this row sits at the
     same y across both person cards, even if one bio is longer than the
     other (works in tandem with .person being a flex column + grid items
     stretching to equal height). */
  margin-top: auto;
}
.person-meta > span { white-space: nowrap; }

@media (min-width: 720px) {
  .people { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (min-width: 980px) {
  .people { grid-template-columns: var(--rail) 1fr 1fr; gap: 40px; padding-left: var(--pad-x); }
  .people > .person { grid-column: auto; }
  .people::before { content: ""; }
}

.network { padding: 0 var(--pad-x); display: grid; gap: 12px; }
.network-label {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}
.network-row { display: flex; flex-wrap: wrap; gap: 10px 16px; font-size: 14px; color: var(--ink-2); }
.network-row .sep { color: var(--mute); }

@media (min-width: 980px) {
  .network { grid-template-columns: var(--rail) 1fr; gap: 40px; }
}

/* Contact ----------------------------------------------------------- */
.contact { padding: 0 0 clamp(60px, 8vw, 100px); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 0 var(--pad-x);
}

.contact-intro .section-h2 { margin-bottom: 18px; }
.contact-intro .section-blurb { max-width: 440px; margin-bottom: 24px; }
.contact-list { font-size: 12px; color: var(--mute); line-height: 1.85; letter-spacing: 0.04em; }

.contact-form {
  border: 1px solid var(--rule);
  padding: 32px;
  background: var(--panel);
}
.contact-form .label-row {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 12px;
}

.reason-fieldset {
  border: 0; padding: 0; margin: 0 0 24px;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.reason-chip {
  cursor: pointer;
  position: relative;
}
.reason-chip input {
  position: absolute; opacity: 0; pointer-events: none;
}
.reason-chip span {
  display: inline-flex;
  padding: 9px 14px;
  font-size: 13px; font-weight: 500;
  border: 1px solid var(--rule);
  color: var(--ink-2);
  border-radius: var(--rad-pill);
  background: transparent;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.reason-chip:hover span { border-color: var(--ink); }
.reason-chip input:checked + span {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
}
.reason-chip input:focus-visible + span {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.field {
  display: block;
  margin-bottom: 14px;
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: 10px 14px;
}
.field-label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 4px;
}
.field input,
.field textarea {
  width: 100%;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  padding: 4px 0 6px;
  resize: vertical;
}
.field input:focus,
.field textarea:focus { outline: none; }
.field:focus-within { border-color: var(--ink); }

.field-row { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 520px) {
  .field-row { grid-template-columns: 1fr 1fr; }
}

.form-foot {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  margin-top: 18px;
  flex-wrap: wrap;
}
.form-note { font-size: 11px; color: var(--mute); letter-spacing: 0.04em; }

@media (min-width: 980px) {
  .contact-grid { grid-template-columns: var(--rail) 1fr 1fr; gap: 40px; align-items: start; }
  .contact-intro { grid-column: 2; }
  .contact-form { grid-column: 3; padding: 40px; }
}

/* Footer ------------------------------------------------------------ */
.site-footer {
  background: var(--ink);
  color: var(--bg);
  padding: clamp(48px, 6vw, 72px) var(--pad-x) 36px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}
.footer-addr {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.8;
  letter-spacing: 0.04em;
  margin-top: 16px;
}
.footer-h {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.site-footer ul { display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: rgba(255,255,255,0.85); }
.site-footer ul a:hover { color: var(--bg); }

.footer-foot {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}

@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 48px; }
}

/* Legal pages ------------------------------------------------------- */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(48px, 7vw, 96px) var(--pad-x);
}
.legal-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.legal h1 {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.04;
}
.legal-updated {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mute);
  margin-top: 12px;
  margin-bottom: 44px;
}
.legal h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 42px;
  margin-bottom: 12px;
}
.legal p { font-size: 16px; line-height: 1.65; color: var(--ink-2); margin-bottom: 14px; }
.legal ul { list-style: disc; padding-left: 22px; margin: 4px 0 16px; }
.legal li { font-size: 16px; line-height: 1.6; color: var(--ink-2); margin: 6px 0; }
.legal a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.legal strong { color: var(--ink); font-weight: 600; }

/* Reduced motion ---------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* Print ------------------------------------------------------------- */
@media print {
  .site-header, .nav-toggle, .site-footer, .threshold-rule, .hero-ctas, .contact-form { display: none !important; }
  body { color: #000; background: #fff; }
}