/* Dervo landing, pristine directions: the site layer every direction shares.
   Colours, type and shape are the app's tokens (app/evidence/design-system/tokens.css), so the site and the app are
   one material. The site adds only display sizes and page spacing on top. Fonts are served from shared/fonts so a
   port keeps the live site's font-src 'self'. */
@font-face { font-family: 'Instrument Serif'; src: url('fonts/InstrumentSerif-latin.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Instrument Sans'; src: url('fonts/InstrumentSans-latin.woff2') format('woff2'); font-weight: 400 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('fonts/JetBrainsMono-latin-400.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }

:root, [data-theme="light"] {
  color-scheme: light;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-text: 'Instrument Sans', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* App sizes, in rem, exactly as tokens.css */
  --fs-caption: 0.75rem; --fs-small: 0.8125rem; --fs-body: 0.875rem; --fs-read: 0.9375rem; --fs-title: 1.0625rem;
  --fs-h2: 1.625rem; --fs-h1: 2.125rem; --fs-hero: 3rem;
  --lh-tight: 1.2; --lh-ui: 1.45; --lh-read: 1.62;

  /* Colours: the 8 Oct 2026 whole-app mockup (restrained pass). Keep this block in step with the app's tokens;
     scripts/check-tokens.mjs compares the two. */
  --paper: #f7f6f3; --canvas: #fdfdfc; --raised: #ffffff; --sunk: #f2f1ed;
  --hover: color-mix(in srgb, var(--ink) 5%, transparent); --press: color-mix(in srgb, var(--ink) 8%, transparent);
  --ink: #1b1b19; --ink-2: #3c3c38; --muted: #6d6c66; --faint: #777570;
  --line: #ebeae5; --line-strong: #dcdbd4;
  --pine: #22382b; --pine-ink: #f8f8f5;
  --sage: #5e7351; --sage-wash: #eef0e8;
  --live: #2f7844; --live-wash: #e6f1e8;
  --rust: #b0461f; --rust-wash: #f8ebe4; --rust-ink: #ffffff;
  --add: #e9f3ea; --add-ink: #24603a; --del: #f9ebe7; --del-ink: #8f3a1c;
  --pop: 0 0 0 1px rgb(28 41 33 / .07), 0 16px 48px -12px rgb(28 41 33 / .28);

  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px; --s7: 48px;
  --r1: 6px; --r2: 10px; --r3: 14px; --r-pill: 999px;
  --hairline: 1px solid var(--line);
  --lift: 0 0 0 1px rgb(20 30 24 / .05), 0 1px 2px rgb(20 30 24 / .05), 0 4px 10px -4px rgb(20 30 24 / .08), 0 18px 36px -18px rgb(34 56 43 / .22);
  --glass: rgb(251 250 245 / .70);
  --glass-blur: blur(22px) saturate(1.15);
  --wash: .3;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --fast: 140ms; --calm: 220ms;

  /* Site layer: display sizes step up, never get bolder (Instrument Serif has one weight) */
  --gutter: clamp(20px, 4.2vw, 64px);
  --max: 1200px;
  --d-hero: clamp(2.75rem, 5.6vw, 5.125rem);
  --d-1: clamp(2.5rem, 4.8vw, 4.5rem);
  --d-2: clamp(2.125rem, 1.4rem + 2.2vw, 3.25rem);
  --t-lead: clamp(1.125rem, 1.4vw, 1.3125rem);
  --t-body: 1.0625rem;
  --window-shadow: 0 0 0 1px rgb(0 0 0 / .07), 0 2px 4px rgb(20 30 24 / .04), 0 40px 90px -40px rgb(20 30 24 / .42);
}
[data-theme="dark"] {
  color-scheme: dark;
  --paper: #141312; --canvas: #1b1a18; --raised: #242220; --sunk: #2e2c29;
  --hover: color-mix(in srgb, var(--ink) 6%, transparent); --press: color-mix(in srgb, var(--ink) 10%, transparent);
  --ink: #eeece7; --ink-2: #cdc9c1; --muted: #a19d94; --faint: #8f8b82;
  --line: #2d2b28; --line-strong: #433f3a;
  --pine: #dfe8d6; --pine-ink: #161a14;
  --sage: #adc19b; --sage-wash: #242a20;
  --live: #80c993; --live-wash: #1a2e20;
  --rust: #e0845b; --rust-wash: #38251c; --rust-ink: #1b1a18;
  --add: #1f3326; --add-ink: #9ad3a8; --del: #3b241c; --del-ink: #f0a689;
  --pop: 0 0 0 1px rgb(255 255 255 / .06), 0 18px 50px -12px rgb(0 0 0 / .7);
  --lift: 0 1px 2px rgb(0 0 0 / .35), 0 12px 30px -14px rgb(0 0 0 / .7);
  --glass: rgb(27 26 24 / .72);
  --wash: .16;
  --window-shadow: 0 0 0 1px rgb(255 255 255 / .06), 0 40px 90px -40px rgb(0 0 0 / .8);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; 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: 400 var(--t-body)/1.55 var(--font-text);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; letter-spacing: .002em; overflow-x: clip; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; }
img, svg { display: block; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--pine); outline-offset: 3px; border-radius: var(--r1); }
code { font-family: var(--font-mono); font-size: .9em; }
.skip { position: absolute; left: 12px; top: -120px; z-index: 50; padding: 10px 14px; border-radius: var(--r2); background: var(--raised);
  box-shadow: var(--lift); font-size: 14px; font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; }
/* Pause motion sits below the nav on focus, so it never covers the logo */
.skip[data-motion-pause]:focus { top: 68px; }
.wrap { width: min(var(--max), 100% - 2 * var(--gutter)); margin-inline: auto; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* ---------- Type roles ---------- */
.d-hero { font: 400 var(--d-hero)/.96 var(--font-display); letter-spacing: -.022em; }
.d-1 { font: 400 var(--d-1)/1 var(--font-display); letter-spacing: -.02em; }
.d-2 { font: 400 var(--d-2)/1.05 var(--font-display); letter-spacing: -.014em; }
.d-2 .ln { display: block; }
/* A and C keep the display sizes they were drawn with; the new scale above is B's. */
body.a, body.c { --d-hero: clamp(3.4rem, 7.6vw, 7.25rem); --d-2: clamp(2rem, 3.3vw, 3.1rem); }
.a .d-hero, .c .d-hero { line-height: .94; letter-spacing: -.028em; }
.a .d-1, .c .d-1 { letter-spacing: -.022em; }
.a .d-2, .c .d-2 { line-height: 1.04; letter-spacing: -.016em; }
.lead { font-size: var(--t-lead); line-height: 1.5; color: var(--ink-2); letter-spacing: -.004em; }
.kicker { font-size: 13px; font-weight: 600; color: var(--muted); letter-spacing: .01em; }
.fine { font-size: 13px; color: var(--muted); }
.d-hero .indent, .d-1 .indent { display: block; padding-left: 1.1em; }
h1, h2 { text-wrap: balance; }
p, .lead, #signup-context { text-wrap: pretty; }

/* ---------- The mark: the forest pebble. Calm, never animated in the chrome ---------- */
.pebble { width: 26px; height: 26px; flex: none; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand .word { font: 400 28px/1 var(--font-display); letter-spacing: -.01em; transform: translateY(-1px); }

/* ---------- Nav ---------- */
.nav { display: flex; align-items: center; justify-content: space-between; height: 76px; position: relative; z-index: 5; }
.nav-end { display: flex; align-items: center; gap: var(--s5); }
.nav-link { font-size: 14px; font-weight: 500; color: var(--ink-2); text-decoration: none; }
.nav-link:hover { color: var(--ink); }

/* ---------- Buttons, the app's pills at site size ---------- */
.button { display: inline-flex; align-items: center; justify-content: center; gap: var(--s2); height: 44px; padding: 0 20px;
  border-radius: var(--r-pill); font-size: 15px; font-weight: 600; letter-spacing: -.004em; white-space: nowrap; text-decoration: none;
  transition: background var(--fast), box-shadow var(--calm) var(--ease), color var(--fast), transform var(--calm) var(--ease); }
.button-primary { background: var(--pine); color: var(--pine-ink); }
.button-primary:hover { background: color-mix(in srgb, var(--pine) 86%, var(--canvas)); }
.button-ghost { background: var(--raised); color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-strong); }
.button-ghost:hover { background: var(--sunk); }
/* A button lifts a pixel under a mouse and gives a little when pressed. No lift on touch, and none with reduced motion. */
@media (hover: hover) {
  .button-primary:hover { box-shadow: 0 10px 20px -12px rgb(34 56 43 / .6); transform: translateY(-1px); }
  .button-ghost:hover { box-shadow: inset 0 0 0 1px var(--line-strong), 0 8px 16px -12px rgb(28 41 33 / .35); transform: translateY(-1px); }
}
.button:active { transform: scale(.97); transition-duration: 80ms; }
.button[disabled] { transform: none; box-shadow: none; }
@media (prefers-reduced-motion: reduce) { .button:hover, .button:active { transform: none; } }
.button-sm { height: 36px; padding: 0 16px; font-size: 14px; }
.works { font-size: 14px; color: var(--muted); }

/* ---------- Waitlist: ids, names and the button are the live site's contract (waitlist.js) ---------- */
.signup { display: flex; flex-direction: column; gap: var(--s3); width: min(100%, 520px); }
.signup label { font-size: 13px; font-weight: 600; color: var(--muted); }
.email-row { display: flex; gap: var(--s2); padding: 5px; border-radius: var(--r-pill); background: var(--raised);
  box-shadow: 0 0 0 1px var(--line-strong), 0 12px 30px -20px rgb(0 0 0 / .25); }
.email-row:focus-within { box-shadow: 0 0 0 2px var(--pine), 0 12px 30px -20px rgb(0 0 0 / .25); }
.email-row input { flex: 1; min-width: 0; height: 42px; padding: 0 16px; border: 0; outline: 0; background: none; font: inherit;
  font-size: 16px; color: var(--ink); }
.email-row input::placeholder { color: var(--faint); }
.email-row button { height: 42px; }
.email-row button[disabled] { opacity: .6; cursor: progress; }
#signup-context { font-size: 13px; line-height: 1.5; color: var(--muted); }
#signup-context a { color: var(--ink-2); }
#signup-next { margin: 6px 0 0; font-size: 13px; line-height: 1.5; color: var(--ink-2); }
#signup-next a { color: var(--ink); }
#signup-status { font-size: 14px; font-weight: 500; color: var(--ink); }
[aria-invalid="true"] { color: var(--rust); }

/* ---------- Footer ---------- */
.footer { display: flex; align-items: center; justify-content: space-between; gap: var(--s5); padding: 28px 0 36px; font-size: 13px; color: var(--muted); }
.footer .brand .word { font-size: 22px; }
.footer .pebble { width: 20px; height: 20px; }
.footer nav { display: flex; gap: var(--s5); }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--ink); }
.noscript { padding: 12px var(--gutter); font-size: 13px; color: var(--muted); }

/* ---------- Product visuals: a real app window scaled to fit (fit.js), never redrawn ---------- */
.fit { position: relative; width: 100%; }
.fit > .app.window { transform-origin: 0 0; margin-inline: auto; }
.demo-cursor { position: absolute; left: 0; top: 0; z-index: 20; width: 19px; height: 23px; pointer-events: none; visibility: hidden;
  filter: drop-shadow(0 2px 3px rgb(20 30 24 / .25)); }
.demo-cursor svg { width: 100%; height: 100%; overflow: visible; }
.demo-cursor path { fill: #1b1b19; stroke: #fdfdfc; stroke-width: 1.5; stroke-linejoin: round; }

/* ---------- Motion: scenes stay hidden until they play; the markup is always the final state ---------- */
/* Nothing waits to arrive any more: every section is painted where it belongs, motion or not. */
html:not(.motion) [data-motion-pause] { display: none; }
.motion-paused *, .motion-paused *::before, .motion-paused *::after { animation-play-state: paused !important; }

@media (max-width: 720px) {
  body { font-size: 16px; }
  .lead { line-height: 1.48; }
  .email-row input { font-size: max(16px, 1em); }
  .nav { height: 64px; }
  .nav-link { display: none; }
  .footer { flex-direction: column; align-items: flex-start; }
  /* Stacked, the shared pill leaves the button sitting inside a white card with a rim of padding around it.
     So the pill dissolves: the field keeps it, the button stands on its own underneath. */
  .email-row { flex-direction: column; gap: 10px; padding: 0; background: none; border-radius: 0; box-shadow: none; }
  .email-row:focus-within { box-shadow: none; }
  /* flex: 1 grows along the main axis, which is the height once this is a column, so the field has to opt out
     of it or it collapses to its 20px of content. */
  .email-row input { flex: none; height: 52px; padding: 0 18px; border-radius: var(--r-pill); background: var(--raised);
    box-shadow: 0 0 0 1px var(--line-strong), 0 12px 30px -20px rgb(0 0 0 / .25); }
  .email-row input:focus { box-shadow: 0 0 0 2px var(--pine), 0 12px 30px -20px rgb(0 0 0 / .25); }
  .email-row button { width: 100%; height: 52px; }
}

/* Review pass, 11 Oct: tap targets, a readable mock placeholder, and the pricing footnote size */
.theme-toggle { min-width: 44px; min-height: 44px; }
.footer nav a, .beta .beta-questions summary { display: inline-flex; align-items: center; min-height: 44px; }
.beta .beta-questions summary { display: flex; }
.beta .beta-hero-note a, .privacy-page a { display: inline-block; padding-block: 8px; margin-block: -8px; }
@media (max-width: 480px) { .button-sm { min-height: 44px; } .ui .lbl, .ui .lbl-s, .ui .fchip { font-size: 12px; } }
.b-home .composer .field, .ui .field { color: var(--ink-2); }
.ui .pt { color: var(--muted); }
:root:not([data-theme="dark"]) .ui .pt { color: #5f5d57; }

:where(a, button, summary, input, [tabindex]):focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }