/* ÉKHO public static pages. Self-contained: no external fonts, frameworks
   or scripts. Same palette and brand as the app's landing page. */

:root {
  --bg: #0a0e1a;
  --card: #111827;
  --line: #1e293b;
  --accent: #818cf8;
  --accent-bright: #a5b4fc;
  --teal: #43e1d8;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --warn: #fbbf24;
  --radius: 18px;
  --measure: 42rem;
  --wide: 72rem;
  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  /* Thin dark document scrollbar where scrollbars take space (Windows);
     overlay scrollbars elsewhere stay native. */
  scrollbar-color: #334155 var(--bg);
  scrollbar-width: thin;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
  overflow-wrap: break-word;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent-bright);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--text);
}

:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
  border-radius: 6px;
}

h1,
h2,
h3 {
  color: var(--text);
  line-height: 1.18;
  letter-spacing: -0.015em;
}

h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2.1rem, 1.35rem + 3.2vw, 3.6rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.55rem, 1.2rem + 1.4vw, 2.25rem);
  font-weight: 800;
}

h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
}

p,
ul,
ol,
dl {
  margin: 0 0 1rem;
}

strong {
  color: var(--text);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.wrap {
  width: 100%;
  max-width: calc(var(--wide) + 2.5rem);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.measure {
  max-width: var(--measure);
}

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

/* Header with the larger brand: logo artwork plus its subtitle as real text,
   placed where it sits in the 2000 x 665 logo (x 833, y 436 at 44px). */

.site-header {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 14, 26, 0.92);
}

.header-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1.5rem;
  min-height: 5rem;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

/* Never shrinks: its width always includes the subtitle, which extends past
   the logo artwork. */
.brand {
  display: inline-grid;
  flex: none;
  margin-right: auto;
  padding: 6px 2px;
  border-radius: 8px;
  color: #cbd5e1;
  text-decoration: none;
}

.brand > * {
  grid-area: 1 / 1;
}

.brand img {
  display: block;
  width: auto;
  max-width: none;
  height: 44px;
}

.brand-tagline {
  margin: 28.85px 0 0 55.1px;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 15px;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

.brand:hover {
  color: var(--text);
}

/* On narrow screens a swipeable row below the logo; only its scrollbar is
   hidden, links stay reachable by touch and keyboard. */
.site-nav {
  order: 3;
  width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.site-nav ul {
  display: flex;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}

.site-nav a {
  display: inline-block;
  padding: 0.45rem 0;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
}

.site-nav a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--accent);
}

.header-cta {
  white-space: nowrap;
}

/* Breadcrumb */

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.875rem;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.35rem;
  color: #334155;
}

.breadcrumb a {
  color: var(--muted);
}

/* Hero */

main {
  display: block;
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 2rem 0 3.5rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 85% 20%, rgba(129, 140, 248, 0.16), rgba(10, 14, 26, 0) 45%),
    radial-gradient(circle at 10% 90%, rgba(67, 225, 216, 0.08), rgba(10, 14, 26, 0) 40%),
    var(--bg);
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding: 0.3rem 0.85rem;
  border: 1px solid rgba(251, 191, 36, 0.3);
  border-radius: 999px;
  background: rgba(251, 191, 36, 0.1);
  color: var(--warn);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.eyebrow.eyebrow-calm {
  border-color: rgba(129, 140, 248, 0.32);
  background: rgba(129, 140, 248, 0.1);
  color: var(--accent-bright);
}

.lead {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.65;
}

.byline {
  color: var(--muted);
  font-size: 0.9rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.75rem 0 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.5rem;
  border: 1px solid transparent;
  border-radius: 12px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
}

.button:hover {
  background: var(--accent-bright);
  color: var(--bg);
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.2);
  background: transparent;
  color: var(--text);
  font-weight: 500;
}

.button.secondary:hover {
  border-color: var(--accent-bright);
  color: var(--text);
}

.button.small {
  padding: 0.7rem 1.1rem;
  border-radius: 10px;
  font-size: 0.9rem;
}

.note {
  margin: 1.5rem 0 0;
  padding: 1rem 1.25rem;
  border: 1px solid rgba(251, 191, 36, 0.28);
  border-left-width: 4px;
  border-radius: 14px;
  background: rgba(251, 191, 36, 0.06);
  font-size: 0.97rem;
}

.note p:last-child {
  margin-bottom: 0;
}

/* Figures: illustrations and the artwork, always labelled */

.figure {
  margin: 0;
  padding: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  background:
    radial-gradient(circle at 20% 10%, rgba(129, 140, 248, 0.14), rgba(17, 24, 39, 0) 60%),
    var(--card);
  box-shadow: 0 24px 60px -30px rgba(129, 140, 248, 0.45);
}

.figure > img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
}

.figure .art {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--bg);
}

.figure figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.75rem;
  padding: 0.75rem 0.25rem 0.1rem;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Sections */

.section {
  padding: 3.5rem 0;
}

.section.tinted {
  border-block: 1px solid var(--line);
  background: var(--card);
}

.kicker {
  margin: 0 0 0.75rem;
  color: var(--teal);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-head {
  max-width: 46rem;
  margin-bottom: 2rem;
}

.section-head > p:last-child {
  margin-bottom: 0;
}

.split {
  display: grid;
  gap: 2rem;
  align-items: start;
}

/* Cards */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16.5rem), 1fr));
  gap: 1.25rem;
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
}

.card {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.tinted .card {
  background: var(--bg);
}

.card > :last-child {
  margin-bottom: 0;
}

.card p,
.card li {
  color: var(--muted);
}

.card h3 + p {
  margin-top: 0.25rem;
}

.icon {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: 1rem;
  border-radius: 14px;
  background: rgba(129, 140, 248, 0.14);
  color: var(--accent-bright);
}

.icon.teal {
  background: rgba(67, 225, 216, 0.12);
  color: var(--teal);
}

.icon svg {
  width: 1.4rem;
  height: 1.4rem;
}

.marks {
  margin: 0;
  padding: 0;
  list-style: none;
}

.marks li {
  position: relative;
  margin-bottom: 0.6rem;
  padding-left: 1.75rem;
}

.marks li::before {
  content: "";
  position: absolute;
  left: 0.3rem;
  top: 0.45em;
  width: 0.45rem;
  height: 0.8rem;
  border: solid var(--teal);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.marks.no li::before {
  left: 0.15rem;
  top: 0.75em;
  width: 0.8rem;
  height: 0;
  border-width: 2px 0 0;
  border-color: var(--muted);
  transform: none;
}

/* Example flow: what is said, how it is said, possible observation */

.flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0 2rem;
}

.flow figure {
  margin: 0;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.flow figure.highlight {
  border-color: rgba(129, 140, 248, 0.35);
  background:
    radial-gradient(circle at 80% 0%, rgba(129, 140, 248, 0.12), rgba(17, 24, 39, 0) 60%),
    var(--card);
}

.flow figcaption {
  margin-bottom: 0.75rem;
  color: var(--accent-bright);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.flow p {
  margin-bottom: 0.6rem;
}

.flow p:last-child {
  margin-bottom: 0;
}

.quote {
  padding-left: 0.9rem;
  border-left: 3px solid var(--accent);
  color: var(--text);
  font-style: italic;
}

.trace {
  display: block;
  width: 100%;
  margin: 0.25rem 0 0.75rem;
}

/* Artwork band */

.band {
  padding: 3rem 0;
}

.band .figure {
  max-width: 64rem;
  margin: 0 auto;
}

/* Numbered steps: vertical list, or cards with .steps-cards */

.steps {
  counter-reset: step;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.steps > li {
  position: relative;
  margin-bottom: 1rem;
  padding-left: 3.25rem;
}

.steps > li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid rgba(129, 140, 248, 0.45);
  border-radius: 999px;
  background: rgba(129, 140, 248, 0.1);
  color: var(--accent-bright);
  font-size: 0.95rem;
  font-weight: 800;
}

.steps.steps-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: 1.25rem;
}

.steps.steps-cards > li {
  margin: 0;
  padding: 4.25rem 1.5rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--muted);
}

.tinted .steps.steps-cards > li {
  background: var(--bg);
}

.steps.steps-cards > li::before {
  left: 1.5rem;
  top: 1.4rem;
}

/* Five-minute method: proportional time bar above the steps */

.timebar {
  display: flex;
  gap: 4px;
  margin: 1.5rem 0 0.5rem;
}

.timebar span {
  display: grid;
  place-items: center;
  min-width: 0;
  height: 2.6rem;
  border-radius: 8px;
  color: var(--bg);
  font-size: 0.85rem;
  font-weight: 800;
}

.timebar .t1 { flex: 1; background: #43e1d8; }
.timebar .t2 { flex: 1; background: #67d4e8; }
.timebar .t3 { flex: 4; background: #8ab4f8; }
.timebar .t4 { flex: 2; background: #a5b4fc; }
.timebar .t5 { flex: 2; background: #818cf8; }

.timescale {
  display: flex;
  justify-content: space-between;
  margin: 0 0 2rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.steps .time {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.05rem 0.5rem;
  border-radius: 999px;
  background: rgba(67, 225, 216, 0.12);
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 700;
}

/* Topic cards for the question guide */

.topics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: 1.25rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.topic {
  display: block;
  height: 100%;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 100% 0%, rgba(129, 140, 248, 0.12), rgba(17, 24, 39, 0) 55%),
    var(--card);
  color: var(--text);
  text-decoration: none;
}

.topic:hover {
  border-color: rgba(129, 140, 248, 0.5);
  color: var(--text);
}

.topic strong {
  display: block;
  font-size: 1.15rem;
}

.topic .range {
  display: block;
  margin-top: 0.25rem;
  color: var(--accent-bright);
  font-size: 0.85rem;
  font-weight: 700;
}

.topic .gist {
  display: block;
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Questions as numbered cards (numbering continues across groups) */

.questions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: 1rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.questions.from-1 { counter-reset: q 0; }
.questions.from-5 { counter-reset: q 4; }
.questions.from-9 { counter-reset: q 8; }

.questions > li {
  counter-increment: q;
  position: relative;
  padding: 4.1rem 1.4rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.questions > li::before {
  content: counter(q, decimal-leading-zero);
  position: absolute;
  left: 1.4rem;
  top: 1.25rem;
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 12px;
  background: rgba(129, 140, 248, 0.15);
  color: var(--accent-bright);
  font-size: 0.95rem;
  font-weight: 800;
}

.questions .q {
  display: block;
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 650;
  line-height: 1.45;
}

.questions .hint {
  display: block;
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* Table of contents */

.toc {
  margin: 0;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.toc h2 {
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.toc ul {
  margin: 0;
  padding-left: 1.1rem;
  columns: 2 15rem;
  column-gap: 2rem;
}

.toc li {
  margin-bottom: 0.35rem;
  break-inside: avoid;
}

/* Example: observation, interpretation, next step */

.labelled {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 1rem;
  margin: 1.25rem 0 1.5rem;
}

.labelled > div {
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.tinted .labelled > div {
  background: var(--bg);
}

.labelled > div:nth-child(2) {
  border-color: rgba(129, 140, 248, 0.35);
}

.labelled > div:nth-child(3) {
  border-color: rgba(67, 225, 216, 0.35);
}

.labelled dt {
  margin-bottom: 0.5rem;
  color: var(--accent-bright);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.labelled > div:nth-child(3) dt {
  color: var(--teal);
}

.labelled dd {
  margin: 0;
  color: var(--text);
}

/* FAQ */

.faq details {
  margin: 0 0 0.75rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
}

.faq summary {
  cursor: pointer;
  margin-left: 1rem;
  padding: 0.95rem 1.25rem;
  font-weight: 650;
  list-style-position: outside;
}

.faq summary:focus-visible {
  outline-offset: -2px;
}

.faq details > div {
  padding: 0 1.25rem 0.5rem;
  color: var(--muted);
}

/* CTA band */

.cta {
  margin: 0;
  padding: 2rem 1.5rem;
  border: 1px solid rgba(129, 140, 248, 0.3);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(129, 140, 248, 0.16), rgba(67, 225, 216, 0.06)),
    var(--card);
}

.cta h2 {
  margin-top: 0;
}

.cta p {
  max-width: 44rem;
  color: var(--muted);
}

.cta .actions {
  margin-bottom: 0;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer .wrap {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer a {
  color: var(--muted);
}

@media (max-width: 30rem) {
  .questions > li {
    padding-top: 4rem;
  }

  /* Logo and a compact CTA share the first row, the nav swipes below. */
  .header-bar {
    column-gap: 0.5rem;
  }

  .header-bar .header-cta {
    min-height: 2.5rem;
    padding: 0.6rem 0.7rem;
    border-radius: 9px;
    font-size: 0.75rem;
  }
}

/* Single column: the hero image follows the headline instead of the long
   lead. Only the visual order changes; DOM, headings and reading order stay.
   Grid items do not collapse margins, so the gaps are set explicitly. */
@media (max-width: 63.99rem) {
  .hero-grid {
    gap: 0;
  }

  .hero-grid > div:first-child {
    display: contents;
  }

  .hero-grid > div:first-child > * {
    order: 2;
  }

  .hero-grid > div:first-child > .eyebrow,
  .hero-grid > div:first-child > h1 {
    order: 0;
  }

  .hero-grid .eyebrow {
    justify-self: start;
  }

  .hero-grid > .figure {
    order: 1;
    margin: 0.25rem 0 1.75rem;
  }

  .hero-grid .lead {
    margin-bottom: 0;
  }

  .hero-grid .note {
    margin-top: 0;
  }
}

@media (min-width: 48rem) {
  body {
    font-size: 1.125rem;
  }

  .wrap {
    padding: 0 2rem;
  }

  .page-hero {
    padding: 2.5rem 0 4.5rem;
  }

  .section {
    padding: 5rem 0;
  }

  .band {
    padding: 4rem 0;
  }

  .cta {
    padding: 2.75rem 3rem;
  }

  .questions > li {
    padding: 1.5rem 1.5rem 1.5rem 4.75rem;
  }

  .questions > li::before {
    left: 1.4rem;
    top: 1.4rem;
  }

  .split {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 3rem;
  }
}

@media (min-width: 64rem) {
  .header-bar {
    column-gap: 2rem;
  }

  .site-nav {
    order: 0;
    width: auto;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 4rem;
  }

  .page-hero {
    padding: 3rem 0 5.5rem;
  }
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

@media print {
  body {
    background: #fff;
    color: #000;
  }

  .site-nav,
  .skip-link,
  .header-cta,
  .cta {
    display: none;
  }
}