/* ============================================================
   SoberSphere HQ — site stylesheet
   Direction A "Operations Desk" (CEO pick, Sep 1 2026). Light only. Mobile first.
   Rules: hairlines over shadows · square corners · one accent, used only for
   the emphasized phrase, eyebrows, pattern numbers, and the primary button ·
   cards sit on the band with dividers, no boxes · the grid motif lives in the
   hero only. Fonts are self-hosted; the site makes no external request.
   ============================================================ */

@font-face { font-family: "Familjen Grotesk"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("/fonts/FamiljenGrotesk-var.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("/fonts/IBMPlexSans-var.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/IBMPlexMono-400.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 500; font-display: swap; src: url("/fonts/IBMPlexMono-500.woff2") format("woff2"); }

:root {
  color-scheme: light;
  --bg: #F3F5F8;
  --ink: #101826;
  --body: rgba(16, 24, 38, 0.70);
  --rule: rgba(16, 24, 38, 0.12);
  --dark: #0F1B2D;
  --dark-head: #EAF0F6;
  --dark-body: rgba(234, 240, 246, 0.68);
  --dark-rule: rgba(234, 240, 246, 0.14);
  --accent: #0E8A8F;
  --accent-deep: #0A6A6E;
  --accent-dark: #4FC3C6;
  --display: "Familjen Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --max-w: 1120px;
  --band-y: 56px;
  --band-x: 20px;
}
@media (min-width: 760px) { :root { --band-y: 84px; --band-x: 40px; } }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-deep); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.band--dark :focus-visible, .band--hero :focus-visible { outline-color: var(--accent-dark); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #fff; padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* ---------- Bands ---------- */
.band { padding: var(--band-y) var(--band-x); }
.band > .inner { max-width: var(--max-w); margin: 0 auto; }
.band--light { background: var(--bg); color: var(--ink); }
.band--dark { background: var(--dark); color: var(--dark-body); }
.band--dark h1, .band--dark h2, .band--dark h3 { color: var(--dark-head); }
.band--hero { background: var(--dark); color: var(--dark-body); position: relative; overflow: hidden; padding-top: 64px; padding-bottom: 60px; }
.band--hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(90deg, var(--dark-rule) 0 1px, transparent 1px 96px),
              repeating-linear-gradient(0deg, var(--dark-rule) 0 1px, transparent 1px 96px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 80%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 80%);
}
.band--hero > .inner { position: relative; }
.band--hero h1 { color: var(--dark-head); }
.band--hero p { color: var(--dark-body); }
.band + .band--light { border-top: 1px solid var(--rule); }

/* ---------- Type ---------- */
h1, h2 { font-family: var(--display); font-weight: 600; line-height: 1.08; margin: 0 0 18px; color: var(--ink); letter-spacing: -0.02em; text-wrap: balance; }
h1 { font-size: clamp(34px, 5vw, 58px); max-width: 18ch; }
h2 { font-size: clamp(26px, 3.4vw, 40px); max-width: 26ch; }
h3 { font-family: var(--display); font-weight: 600; font-size: 20px; line-height: 1.25; margin: 0 0 8px; color: var(--ink); letter-spacing: -0.01em; }
h1 em, h2 em { font-style: normal; color: var(--accent); }
.band--dark h2 em, .band--hero h1 em { color: var(--accent-dark); }
p { margin: 0 0 16px; color: var(--body); max-width: 66ch; }
.band--dark p { color: var(--dark-body); }
ul, ol { margin: 0 0 16px; padding-left: 20px; color: var(--body); max-width: 66ch; }
.band--dark ul, .band--dark ol { color: var(--dark-body); }
li { margin: 0 0 6px; }
strong { color: inherit; font-weight: 600; }
.eyebrow { font-family: var(--mono); font-weight: 500; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin: 0 0 16px; max-width: none; }
.band--dark .eyebrow, .band--hero .eyebrow { color: var(--accent-dark); }
.lede { font-size: 17.5px; }
.tag { display: inline-block; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; border: 1px solid currentColor; padding: 3px 7px; color: var(--body); vertical-align: middle; }
.band--dark .tag { color: var(--dark-body); }
.muted { font-size: 14px; }
.mt-24 { margin-top: 24px; }
.mt-28 { margin-top: 28px; }

/* ---------- Nav ---------- */
.nav { background: var(--bg); border-bottom: 1px solid var(--rule); padding: 0 var(--band-x); }
.nav .inner { max-width: var(--max-w); margin: 0 auto; display: flex; align-items: center; flex-wrap: wrap; gap: 10px 24px; min-height: 68px; padding: 10px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 600; font-size: 16px; letter-spacing: 0.01em; color: var(--ink); margin-right: auto; }
.brand:hover { color: var(--ink); }
.brand .mk { width: 16px; height: 16px; border: 2px solid var(--accent); position: relative; flex: none; }
.brand .mk::after { content: ""; position: absolute; inset: 4px; background: var(--accent); }
.brand small { font-family: var(--mono); font-weight: 500; font-size: 11px; letter-spacing: 0.1em; color: var(--accent); }
.nav .links { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; }
.nav a.link { font-size: 14px; font-weight: 500; color: rgba(16, 24, 38, 0.72); }
.nav a.link:hover { color: var(--ink); }
.nav-toggle { font: 500 13px var(--sans); background: none; border: 1px solid var(--rule); color: var(--ink); padding: 8px 12px; cursor: pointer; }
@media (max-width: 759px) {
  .nav .inner { gap: 10px 16px; }
  .nav .links { flex-basis: 100%; flex-direction: column; align-items: flex-start; gap: 12px; padding: 6px 0 12px; }
  .js .nav .links[hidden] { display: none; }
  .js .nav-toggle { display: inline-block; }
}
.nav-toggle[hidden] { display: none; }
/* The toggle belongs to the mobile breakpoint only. JS un-hides it; this keeps
   it off the desktop nav, where the links are always visible. */
@media (min-width: 760px) { .nav-toggle { display: none; } }

/* ---------- Buttons ---------- */
.btn { display: inline-block; font-family: var(--sans); font-weight: 600; font-size: 14.5px; line-height: 1; padding: 14px 18px; text-decoration: none; border: 1px solid transparent; cursor: pointer; }
.btn-p { background: var(--accent); color: #fff; }
.btn-p:hover { background: var(--accent-deep); color: #fff; }
.btn-s { color: var(--ink); border-color: var(--rule); }
.btn-s:hover { color: var(--ink); border-color: var(--ink); }
.band--dark .btn-s, .band--hero .btn-s { color: var(--dark-head); border-color: var(--dark-rule); }
.band--dark .btn-s:hover, .band--hero .btn-s:hover { border-color: var(--dark-head); color: var(--dark-head); }
.btn-sm { padding: 10px 14px; font-size: 13.5px; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }

/* ---------- Hero extras ---------- */
.hero-p { font-size: 17px; max-width: 62ch; margin-bottom: 26px; }
.ticks { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px; margin: 40px 0 0; padding: 18px 0 0; list-style: none; max-width: none; border-top: 1px solid var(--dark-rule); }
@media (min-width: 760px) { .ticks { grid-template-columns: repeat(4, 1fr); } }
.ticks li { margin: 0; font-family: var(--mono); font-size: 11px; line-height: 1.5; letter-spacing: 0.08em; text-transform: uppercase; color: var(--dark-body); }
.ticks li b { display: block; color: var(--dark-head); font-weight: 500; }

/* ---------- Grids and cards ---------- */
.grid { display: grid; grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--rule); margin-top: 8px; }
.band--dark .grid { border-top-color: var(--dark-rule); }
@media (min-width: 760px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-2 { grid-template-columns: repeat(2, 1fr); } }
.cell { padding: 22px 0 24px; border-bottom: 1px solid var(--rule); }
.band--dark .cell { border-bottom-color: var(--dark-rule); }
@media (min-width: 760px) {
  .cell { padding: 24px 24px 26px 0; border-right: 1px solid var(--rule); }
  .band--dark .cell { border-right-color: var(--dark-rule); }
  .grid-3 .cell:nth-child(3n) , .grid-2 .cell:nth-child(2n) { border-right: 0; }
  .grid-3 .cell:not(:nth-child(3n+1)), .grid-2 .cell:not(:nth-child(2n+1)) { padding-left: 24px; }
}
.cell .n { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 12px; }
.band--dark .cell .n { color: var(--accent-dark); }
.cell h3 { font-size: 18px; }
.cell p { font-size: 15px; margin: 0; }
.cell p + p { margin-top: 10px; }
.cell a.more { display: inline-block; margin-top: 12px; font-weight: 600; font-size: 13.5px; }
.band--dark .cell a.more { color: var(--accent-dark); }
.band--dark .cell h3 { color: var(--dark-head); }
.band--dark .cell p { color: var(--dark-body); }

/* ---------- Steps (a real sequence) ---------- */
.steps { display: grid; grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--rule); margin: 8px 0 0; padding: 0; list-style: none; max-width: none; counter-reset: step; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(4, 1fr); } .steps-5 { grid-template-columns: repeat(5, 1fr); } }
.step { padding: 22px 0 24px; border-bottom: 1px solid var(--rule); counter-increment: step; }
@media (min-width: 760px) { .step { padding: 24px 22px 26px 0; border-right: 1px solid var(--rule); } .step:last-child { border-right: 0; } .step + .step { padding-left: 22px; } }
.step::before { content: "STEP " counter(step, upper-roman); display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 12px; }
.step h3 { font-size: 18px; }
.step p { font-size: 15px; margin: 0; }

/* ---------- Long-form sections (What we do / The platform / How we work / AI) ---------- */
.pattern { padding: 34px 0; border-top: 1px solid var(--rule); scroll-margin-top: 24px; }
.pattern:first-of-type { border-top: 0; padding-top: 8px; }
.pattern .n { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 10px; }
.pattern h2 { font-size: clamp(24px, 3vw, 32px); }
.pattern dl { margin: 0; max-width: 72ch; }
.pattern dt { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink); margin: 18px 0 6px; }
.pattern dd { margin: 0; color: var(--body); }
.two-col { display: grid; grid-template-columns: 1fr; gap: 28px; }
@media (min-width: 760px) { .two-col { grid-template-columns: 1fr 1fr; gap: 48px; } }
.two-col h3 { margin-bottom: 12px; }
.two-col ul { padding-left: 0; list-style: none; }
.two-col li { padding: 10px 0; border-top: 1px solid var(--rule); }
.two-col li:last-child { border-bottom: 1px solid var(--rule); }

/* ---------- Numbered beats (the loop) ---------- */
.beats { list-style: none; counter-reset: beat; margin: 8px 0 0; padding: 0; max-width: 78ch; }
.beats li { counter-increment: beat; position: relative; padding: 16px 0 16px 46px; margin: 0; border-top: 1px solid var(--rule); color: var(--body); }
.beats li:last-child { border-bottom: 1px solid var(--rule); }
.beats li::before { content: counter(beat); position: absolute; left: 0; top: 16px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--accent); }
.beats li b { color: var(--ink); font-weight: 600; }
.band--dark .beats li { border-color: var(--dark-rule); color: var(--dark-body); }
.band--dark .beats li b { color: var(--dark-head); }
.band--dark .beats li::before { color: var(--accent-dark); }

/* ---------- Plain rule-separated lists ---------- */
.plain { list-style: none; padding-left: 0; max-width: 78ch; }
.plain li { padding: 12px 0; margin: 0; border-top: 1px solid var(--rule); }
.plain li:last-child { border-bottom: 1px solid var(--rule); }
.plain li b { color: var(--ink); font-weight: 600; }
.band--dark .plain li { border-color: var(--dark-rule); }
.band--dark .plain li b { color: var(--dark-head); }

/* ---------- Founder block ---------- */
/* The photo slot is intentionally absent until a real photograph is in the
   repo (decisions/2026-09-05-founder-naming.md). No placeholder face. */
.founder { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: start; }
.founder img { width: 100%; max-width: 260px; height: auto; display: block; }
@media (min-width: 760px) { .founder:has(img) { grid-template-columns: 260px 1fr; gap: 36px; } }
.founder-body p:last-child { margin-bottom: 0; }

/* ---------- More links inside long-form blocks ---------- */
.pattern a.more, .inner > p a.more { font-weight: 600; white-space: nowrap; }

/* ---------- FAQ ---------- */
.qa { padding: 22px 0; border-top: 1px solid var(--rule); max-width: 72ch; }
.qa:first-of-type { border-top: 0; }
.qa h3 { font-size: 19px; margin-bottom: 10px; }
.qa p:last-child { margin-bottom: 0; }
.faq-more { display: inline-block; margin-top: 18px; font-weight: 600; }

/* ---------- Proof list ---------- */
.proof blockquote { margin: 28px 0 8px; padding: 0 0 0 18px; border-left: 2px solid var(--accent-dark); color: var(--dark-head); font-family: var(--display); font-size: 19px; line-height: 1.4; max-width: 52ch; }
.proof blockquote footer { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--dark-body); margin-top: 10px; }

/* ---------- Form ---------- */
.form { max-width: 620px; display: grid; gap: 18px; margin-top: 8px; }
.form label { display: grid; gap: 6px; font-weight: 500; font-size: 14px; color: var(--ink); }
.form input, .form textarea, .form select { font: 400 16px var(--sans); color: var(--ink); background: #fff; border: 1px solid rgba(16, 24, 38, 0.28); padding: 12px 12px; width: 100%; border-radius: 0; }
.form textarea { min-height: 120px; resize: vertical; }
.form input:focus, .form textarea:focus, .form select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.form .hint { font-size: 13px; color: var(--body); margin: 0; }
.form-status { margin-top: 14px; padding: 12px 14px; border: 1px solid var(--rule); font-size: 14px; color: var(--ink); max-width: 620px; }
.form-status[hidden] { display: none; }
.mailbox { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--rule); font-size: 15px; }
.mailbox a { font-weight: 600; }

/* ---------- Insights ---------- */
.post { padding: 22px 0; border-top: 1px solid var(--rule); max-width: 72ch; }
.post:first-of-type { border-top: 0; }
.post .by { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--body); margin-bottom: 8px; }
.post h3 a { color: var(--ink); }
.post h3 a:hover { color: var(--accent); }
.post a.more { display: inline-block; margin-top: 10px; font-weight: 600; font-size: 13.5px; }
.article { max-width: 68ch; }
.article h2 { font-size: clamp(22px, 2.6vw, 28px); margin-top: 30px; }

/* ---------- Footer ---------- */
.footer { background: var(--dark); color: var(--dark-body); padding: 48px var(--band-x) 28px; border-top: 1px solid var(--dark-rule); }
.footer .inner { max-width: var(--max-w); margin: 0 auto; }
.footer .brand { color: var(--dark-head); }
.footer .brand:hover { color: var(--dark-head); }
.footer .brand small { color: var(--accent-dark); }
.foot-top p { font-size: 14px; margin: 14px 0 0; color: var(--dark-body); max-width: 52ch; }
.foot-legal { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 28px; margin-top: 32px; padding-top: 18px; border-top: 1px solid var(--dark-rule); font-size: 13px; color: var(--dark-body); }
.foot-cross { margin-left: auto; }
.foot-cross a { color: var(--dark-head); font-weight: 600; }
.foot-legal a { color: var(--dark-body); }
.foot-legal a:hover { color: var(--dark-head); }