/* redo that. — marketing site
   One stylesheet, system fonts, no build step. Tokens mirror src/lib/theme.ts.
   Restraint is the brand: two neutrals, one warm accent, no gradients. */

:root {
  /* Brand */
  --ink: #141210;
  --ink-soft: #221f1b;
  --paper: #faf7f2;
  --sand: #f0eae0;
  --line: #e3dcd1;
  --ember: #c8683c;

  /* Applied roles (light) */
  --bg: var(--paper);
  --bg-alt: var(--sand);
  --fg: #1c1916;
  /* Deeper than brand `stone` (#8A8378, 3.4:1) so muted copy clears AA. */
  --fg-muted: #6b645a;
  /* Ember itself is only 3.6:1 on paper — fine for rules and dots, not for
     text, so small accent type uses a deepened variant. */
  --accent-text: #a9552e;
  --rule: var(--line);
  --frame: #e8e1d6;
  /* The one inverted block; flips with the scheme so it always stands out. */
  --invert-bg: var(--ink);
  --invert-fg: var(--paper);
  --invert-muted: rgba(250, 247, 242, 0.64);
  --invert-rule: rgba(250, 247, 242, 0.16);
  --chrome: rgba(250, 247, 242, 0.78);
  --shadow: 0 1px 2px rgba(20, 18, 16, 0.05), 0 12px 32px rgba(20, 18, 16, 0.08);

  --gutter: 1.25rem;
  --measure: 34rem;
  --radius: 14px;
  --section: clamp(3.5rem, 9vw, 6.5rem);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: var(--ink);
    --bg-alt: var(--ink-soft);
    --fg: var(--paper);
    --fg-muted: rgba(250, 247, 242, 0.64);
    --accent-text: var(--ember);
    --rule: rgba(250, 247, 242, 0.14);
    --frame: #2b2721;
    --invert-bg: var(--paper);
    --invert-fg: var(--ink);
    --invert-muted: #6b645a;
    --invert-rule: #e3dcd1;
    --chrome: rgba(20, 18, 16, 0.78);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
  }
}

/* Explicit choice wins in both directions (media queries can't be overridden
   by a later selector, so the dark case is repeated outside the query). */
:root[data-theme='dark'] {
  --bg: var(--ink);
  --bg-alt: var(--ink-soft);
  --fg: var(--paper);
  --fg-muted: rgba(250, 247, 242, 0.64);
  --accent-text: var(--ember);
  --rule: rgba(250, 247, 242, 0.14);
  --frame: #2b2721;
  --invert-bg: var(--paper);
  --invert-fg: var(--ink);
  --invert-muted: #6b645a;
  --invert-rule: #e3dcd1;
  --chrome: rgba(20, 18, 16, 0.78);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
    'Noto Sans', sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

/* ---- Type -------------------------------------------------------------- */
/* Tracking is size-specific: display tightens, body sits near zero. */

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.375rem, 8.5vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.038em;
}

h2 {
  font-size: clamp(1.75rem, 5vw, 2.625rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

h3 {
  font-size: 1.1875rem;
  line-height: 1.35;
  letter-spacing: -0.016em;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

.lede {
  font-size: clamp(1.125rem, 2.4vw, 1.375rem);
  line-height: 1.5;
  letter-spacing: -0.011em;
  color: var(--fg-muted);
  max-width: var(--measure);
}

.muted {
  color: var(--fg-muted);
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* ---- Layout ------------------------------------------------------------ */

.wrap {
  width: 100%;
  max-width: 68rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section {
  padding-block: var(--section);
}

.band {
  background: var(--bg-alt);
}

.stack > * + * {
  margin-top: 1rem;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--invert-bg);
  color: var(--invert-fg);
  padding: 0.75rem 1rem;
  border-radius: 0 0 var(--radius) 0;
  z-index: 20;
}

.skip:focus {
  left: 0;
}

/* ---- Focus ------------------------------------------------------------- */

:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Header ------------------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--chrome);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--rule);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.75rem;
}

.wordmark {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.028em;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9375rem;
}

.site-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  padding-block: 0.5rem;
}

.site-nav a:hover {
  color: var(--fg);
}

/* ---- Hero -------------------------------------------------------------- */

.hero {
  padding-top: clamp(2.75rem, 7vw, 5rem);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
}

.hero h1 {
  max-width: 15ch;
}

.hero .lede {
  margin-top: 1.25rem;
}

/* ---- Buttons + pills --------------------------------------------------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.5rem;
  border: 0;
  border-radius: 999px;
  background: var(--invert-bg);
  color: var(--invert-fg);
  font: inherit;
  font-weight: 600;
  letter-spacing: -0.012em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 120ms ease-out, opacity 120ms ease-out;
}

.btn:hover {
  opacity: 0.88;
}

.btn:active {
  transform: scale(0.98);
}

.btn-quiet {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--rule);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-top: 1.75rem;
  padding: 0;
  list-style: none;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0 1.125rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 0.9375rem;
  color: var(--fg-muted);
}

.pill::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ember);
  flex: none;
}

/* ---- Before / after pairs ---------------------------------------------- */

.pair {
  margin: 0;
}

.frames {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

.frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--frame);
  aspect-ratio: 3 / 2;
}

.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tag {
  position: absolute;
  left: 0.625rem;
  bottom: 0.625rem;
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  background: rgba(20, 18, 16, 0.62);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #faf7f2;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.pair figcaption {
  margin-top: 0.875rem;
  font-size: 0.9375rem;
  color: var(--fg-muted);
}

.hero-pair {
  margin-top: clamp(2.25rem, 5vw, 3rem);
}

.showcase {
  display: grid;
  gap: clamp(2.25rem, 5vw, 3.25rem);
  margin-top: clamp(2rem, 4vw, 3rem);
}

/* ---- Steps + phone frames ---------------------------------------------- */

.steps {
  display: grid;
  gap: clamp(2.5rem, 6vw, 3rem);
  margin-top: clamp(2rem, 4vw, 3rem);
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
}

.step-num {
  display: inline-block;
  font-variant-numeric: tabular-nums;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent-text);
}

.step h3 {
  margin-top: 0.25rem;
}

.step p {
  color: var(--fg-muted);
  max-width: 30rem;
}

.phone {
  width: min(100%, 15rem);
  padding: 0.5rem;
  border-radius: 2.25rem;
  background: var(--ink);
  box-shadow: var(--shadow);
}

.phone img {
  width: 100%;
  border-radius: 1.75rem;
  aspect-ratio: 620 / 1343;
  object-fit: cover;
}

/* ---- Feature strip ------------------------------------------------------ */

.features {
  display: grid;
  gap: 1.75rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding: 0;
  list-style: none;
}

.features li {
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
}

.features p {
  margin-top: 0.5rem;
  color: var(--fg-muted);
}

/* ---- Closing call ------------------------------------------------------- */

.call {
  background: var(--invert-bg);
  color: var(--invert-fg);
}

.call .lede,
.call .muted,
.call .pill {
  color: var(--invert-muted);
}

.call .pill {
  border-color: var(--invert-rule);
}

.call .btn {
  background: var(--invert-fg);
  color: var(--invert-bg);
}

/* ---- Long-form pages ---------------------------------------------------- */

.doc {
  max-width: 44rem;
  padding-block: clamp(2.5rem, 6vw, 4rem) var(--section);
}

.doc h1 {
  font-size: clamp(2rem, 6vw, 3rem);
}

.doc h2 {
  font-size: 1.375rem;
  letter-spacing: -0.02em;
  margin-top: 2.75rem;
}

.doc h3 {
  font-size: 1.0625rem;
  margin-top: 1.75rem;
}

.doc p,
.doc ul,
.doc ol {
  margin-top: 0.875rem;
}

.doc ul,
.doc ol {
  padding-left: 1.25rem;
}

.doc li + li {
  margin-top: 0.5rem;
}

.doc a {
  color: var(--fg);
  text-decoration-color: var(--ember);
  text-underline-offset: 3px;
}

.doc .updated {
  margin-top: 1rem;
  font-size: 0.9375rem;
  color: var(--fg-muted);
}

.doc table {
  width: 100%;
  margin-top: 1rem;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.doc th,
.doc td {
  text-align: left;
  vertical-align: top;
  padding: 0.625rem 0.75rem 0.625rem 0;
  border-bottom: 1px solid var(--rule);
}

.doc th {
  font-weight: 600;
  white-space: nowrap;
}

.scroll-x {
  overflow-x: auto;
}

/* ---- Referral ----------------------------------------------------------- */

.code-card {
  margin-top: 2rem;
  padding: clamp(1.5rem, 5vw, 2.5rem);
  border: 1px solid var(--rule);
  border-radius: 20px;
  background: var(--bg-alt);
  text-align: center;
}

.code {
  display: block;
  margin: 0.75rem 0 0;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  font-size: clamp(2.25rem, 12vw, 3.75rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.1;
  text-indent: 0.12em;
  word-break: break-all;
  /* A long-press or double-click grabs the whole code, not one character. */
  -webkit-user-select: all;
  user-select: all;
}

.copy-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.625rem;
  margin-top: 1.5rem;
}

.copy-status {
  min-height: 1.25rem;
  font-size: 0.875rem;
  color: var(--fg-muted);
}

.howto {
  counter-reset: howto;
  margin-top: 2.5rem;
  padding: 0;
  list-style: none;
}

.howto li {
  position: relative;
  padding-left: 2.25rem;
  margin-top: 1rem;
}

.howto li::before {
  counter-increment: howto;
  content: counter(howto);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 1.625rem;
  height: 1.625rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--rule);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--fg-muted);
}

/* ---- Footer ------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding-block: 2.5rem 3rem;
  font-size: 0.9375rem;
  color: var(--fg-muted);
}

.site-footer .wrap {
  display: grid;
  gap: 1.25rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

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

.site-footer a:hover {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal {
  font-size: 0.875rem;
  line-height: 1.5;
}

/* ---- Wider viewports ---------------------------------------------------- */

@media (min-width: 40em) {
  :root {
    --gutter: 2rem;
  }

  .frames {
    grid-template-columns: 1fr 1fr;
  }

  .features {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 2.5rem;
  }
}

@media (min-width: 56em) {
  /* Three abreast; `margin-top: auto` lands every phone on one baseline
     however long the copy above it runs. */
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }

  .step .phone {
    margin-top: auto;
    width: 100%;
    max-width: 15rem;
  }

  .features {
    grid-template-columns: repeat(4, 1fr);
  }

  .site-footer .wrap {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}

/* ---- User preferences --------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header,
  .tag {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .site-header {
    background: var(--bg);
  }

  .tag {
    background: #141210;
  }
}

@media (prefers-contrast: more) {
  :root {
    --fg-muted: var(--fg);
    --rule: currentColor;
  }
}