/* ─────────────────────────────────────────────────────────────
   Quanttix — Tape & Ink
   Tape is the market's voice. Ink is the trader's hand.
   Palette, typography, and rhythm per CC-M1-VISUAL.md.
   ───────────────────────────────────────────────────────────── */

:root {
  /* Primary brand */
  --vermilion:        #e4533c;
  --vermilion-deep:   #c54530;
  --vermilion-faint:  #fbe9e3;

  /* Foundations */
  --ink:        #1a1a1a;
  --ink-soft:   #4a4a4a;
  --ink-faint:  #8a8a8a;

  --paper:        #faf6ee;
  --paper-bright: #ffffff;
  --paper-edge:   #ede6d6;

  /* Annotations */
  --cyan:       #3a5f6e;
  --cyan-faint: #d6e2e7;

  /* Typography */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body:    'Manrope', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --size-display:   clamp(2.5rem, 4.5vw, 4.5rem);
  --lh-display:     1.05;
  --ls-display:     -0.02em;
  --weight-display: 600;

  --size-beat:   clamp(3rem, 7vw, 6rem);
  --lh-beat:     1.0;
  --ls-beat:     -0.03em;
  --weight-beat: 400;

  --size-pullquote:   clamp(1.5rem, 2.5vw, 2rem);
  --lh-pullquote:     1.25;
  --ls-pullquote:     -0.01em;
  --weight-pullquote: 400;

  --size-body:   1.0625rem;
  --lh-body:     1.65;
  --weight-body: 400;
  --measure-body: 62ch;

  --size-lead:   1.25rem;
  --lh-lead:     1.55;
  --weight-lead: 500;

  --size-eyebrow:    0.8125rem;
  --lh-eyebrow:      1.2;
  --weight-eyebrow:  500;
  --ls-eyebrow:      0.08em;

  --size-mml-label:    0.6875rem;
  --weight-mml-label:  500;

  --size-annotation: 0.875rem;
  --lh-annotation:   1.4;

  /* Container */
  --max-content:    1180px;
  --pad-x-desktop:  5rem;
  --pad-x-tablet:   3rem;
  --pad-x-mobile:   1.5rem;
}

/* ─── Reset / base ─── */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: var(--lh-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--vermilion); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover, a:focus-visible { color: var(--vermilion-deep); }

p { margin: 0 0 1.1em; max-width: var(--measure-body); }

/* ─── Skip link ─── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  z-index: 100;
  border-radius: 0 0 4px 4px;
}
.skip-link:focus-visible { top: 0; }

/* ─── Container ─── */
.container {
  max-width: var(--max-content);
  margin-inline: auto;
  padding-inline: var(--pad-x-desktop);
}
.container-narrow { max-width: 720px; }

@media (max-width: 900px) { .container { padding-inline: var(--pad-x-tablet); } }
@media (max-width: 600px) { .container { padding-inline: var(--pad-x-mobile); } }

/* ─── Hero ─── */
.hero {
  padding-block: clamp(4rem, 8vw, 7rem) clamp(2rem, 4vw, 4rem);
  background: var(--paper);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 400ms ease-out, transform 400ms ease-out;
}
.hero.in-view { opacity: 1; transform: none; }
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--size-eyebrow);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--vermilion);
  margin: 0;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 5.5vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--ink);
  margin: 1.5rem 0 0;
  max-width: 22ch;
}
.hero-subhead {
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  line-height: 1.5;
  color: var(--ink-soft);
  margin: 1.5rem 0 0;
  max-width: 50ch;
}
@media (max-width: 767px) {
  .hero-headline { max-width: 18ch; }
}

/* ─── Act sections ─── */
section.act {
  padding-block: clamp(5rem, 10vw, 9rem);
  scroll-margin-top: 2rem;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 400ms ease-out, transform 400ms ease-out;
}
section.act.in-view { opacity: 1; transform: none; }

section.act + section.act { border-top: 1px solid var(--paper-edge); }

/* Act 3 floats — no dividers above or below */
section.act-3 { border-top: 0 !important; }
section.act-3 + section.act { border-top: 0 !important; }

/* ─── Eyebrow ─── */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--size-eyebrow);
  font-weight: var(--weight-eyebrow);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-soft);
  margin: 0 0 clamp(1.5rem, 3vw, 2.5rem);
}
.eyebrow-num { color: var(--vermilion); }
.eyebrow-sep { color: var(--paper-edge); margin: 0 0.5em; }

/* ─── Act heading ─── */
.act-heading {
  font-family: var(--font-display);
  font-size: var(--size-display);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  font-weight: var(--weight-display);
  color: var(--ink);
  margin: 0 0 1.5rem;
}

/* ─── Pull quote ─── */
.pull-quote {
  font-family: var(--font-display);
  font-size: var(--size-pullquote);
  line-height: var(--lh-pullquote);
  letter-spacing: var(--ls-pullquote);
  font-weight: var(--weight-pullquote);
  font-style: italic;
  color: var(--ink);
  border-left: 3px solid var(--vermilion);
  padding-left: 1.25rem;
  margin: 1.5rem 0 0;
  max-width: var(--measure-body);
}
.pull-quote-emphasis {
  background: var(--vermilion);
  color: var(--paper);
  border-left: 0;
  padding: 1.25rem 1.5rem;
  margin-top: 2rem;
  font-style: italic;
}
@media (max-width: 767px) {
  .pull-quote { font-size: 1.375rem; }
}

/* ─── Act grid (Acts 1, 2) ─── */
.act-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
.act-grid .text > p { max-width: 60ch; }
.act-grid .visual { margin: 0; }
.act-grid .visual figcaption {
  font-family: var(--font-mono);
  font-size: var(--size-annotation);
  font-style: italic;
  color: var(--ink-soft);
  margin-top: 0.75rem;
  max-width: 50ch;
}
.act-grid-reverse .visual { order: -1; }
@media (max-width: 900px) {
  .act-grid { grid-template-columns: 1fr; }
  .act-grid .visual { order: -1; }
}

/* ─── Act 3 (the beat) ─── */
.act-3-inner { text-align: center; max-width: 56ch; margin-inline: auto; }
.act-3-inner > p { margin-inline: auto; }
.act-3-inner .act-heading { text-align: center; }
.act3-beat {
  font-family: var(--font-display);
  font-size: var(--size-beat);
  line-height: var(--lh-beat);
  letter-spacing: var(--ls-beat);
  font-weight: var(--weight-beat);
  color: var(--ink);
  text-align: center;
  margin: clamp(4rem, 10vw, 8rem) auto;
  max-width: 18ch;
}

/* ─── Act 4 (stack: heading, body, triptych) ─── */
.act-4-stack > .act-heading { margin-bottom: 2rem; }
.act-4-body { max-width: var(--measure-body); }
.act4-reveal {
  font-family: var(--font-display);
  font-size: var(--size-lead);
  line-height: var(--lh-lead);
  color: var(--ink);
}
.act4-reveal strong { font-weight: 600; color: var(--vermilion); }
.reveal-phrase { font-style: italic; color: var(--ink); }
.reveal-dot {
  font-style: normal;
  font-family: var(--font-mono);
  color: var(--vermilion);
}

.triptych { margin-top: 3rem; }
.triptych-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}
.triptych .panel {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: 4px;
}
.triptych figcaption {
  font-family: var(--font-mono);
  font-size: var(--size-annotation);
  font-style: italic;
  color: var(--ink-soft);
  margin-top: 1rem;
  text-align: center;
}
@media (max-width: 900px) {
  .triptych-grid { grid-template-columns: 1fr; }
}

/* ─── Act 5 (stack: chart above, then text) ─── */
.act-5-stack > .visual { margin: 0 0 3rem; }
.annotated-reading { width: 100%; }
.annotated-reading figcaption {
  font-family: var(--font-mono);
  font-size: var(--size-annotation);
  font-style: italic;
  color: var(--ink-soft);
  margin-top: 0.75rem;
  text-align: center;
}

.lead {
  font-size: var(--size-lead);
  line-height: var(--lh-lead);
  font-weight: var(--weight-lead);
  color: var(--ink);
  max-width: var(--measure-body);
}

.how-you-read { margin: 1.5rem 0 0; padding: 0; max-width: var(--measure-body); }
.hyr-item { display: block; margin-bottom: 1.5rem; }
.how-you-read dt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--ink);
  margin-bottom: 0.25rem;
}
.how-you-read dd {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.act5-closing {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.625rem);
  line-height: 1.4;
  font-style: italic;
  color: var(--ink);
  margin-top: 3rem;
  max-width: 60ch;
}

/* ─── CTA row (Act 5) ─── */
.cta-row {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 600;
  text-align: center;
  max-width: none;
}
.cta-link {
  color: var(--vermilion);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 200ms ease;
}
.cta-link:hover,
.cta-link:focus-visible {
  border-bottom-color: var(--vermilion);
  outline: none;
}
.cta-sep {
  color: var(--ink-faint);
  margin: 0 0.5em;
  font-family: var(--font-mono);
  font-weight: 400;
}

/* ─── Pricing plates ─── */
.plates {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}
@media (max-width: 900px) { .plates { grid-template-columns: 1fr; } }

.plate {
  background: var(--paper-bright);
  border: 1px solid var(--paper-edge);
  border-radius: 8px;
  padding: clamp(1.5rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.plate-free { border-top: 3px solid var(--vermilion); }
.plate-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0;
}
.plate-divider {
  height: 1px;
  background: var(--paper-edge);
  border: 0;
  margin: 0;
}
.plate-desc {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: none;
  margin: 0;
}
.plate-meta {
  font-family: var(--font-mono);
  font-size: var(--size-eyebrow);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin: 0;
  max-width: none;
}
.plate-cta {
  margin-top: auto;
  padding: 0.875rem 1.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
  background: var(--vermilion);
  border: 0;
  border-radius: 4px;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: background 200ms ease;
}
.plate-cta:hover,
.plate-cta:focus-visible { background: var(--vermilion-deep); color: var(--paper); }

/* ─── Waitlist form ─── */
.waitlist-form { margin-top: 2rem; }
.form-row { margin-bottom: 1.25rem; }
.waitlist-form label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--size-eyebrow);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 0.5rem;
}
.waitlist-form input[type="email"],
.waitlist-form input[type="text"] {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--paper-bright);
  border: 1px solid var(--paper-edge);
  border-radius: 4px;
  color: var(--ink);
}
.waitlist-form input:focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 2px;
  border-color: var(--vermilion);
}
.waitlist-submit { width: 100%; margin-top: 0.5rem; }
.form-privacy {
  font-size: 0.8125rem;
  color: var(--ink-faint);
  margin-top: 1rem;
}
.waitlist-success,
.waitlist-already,
.waitlist-error {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  background: var(--vermilion-faint);
  color: var(--ink);
  border-left: 3px solid var(--vermilion);
}
.waitlist-error { background: #fff6f2; }
.waitlist-success p,
.waitlist-already p,
.waitlist-error p { margin: 0; max-width: none; }

/* ─── Footer ─── */
footer#footer {
  background: var(--paper);
  border-top: 1px solid var(--paper-edge);
  padding-block: 4rem 2rem;
  color: var(--ink-soft);
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}
@media (max-width: 600px) { .footer-cols { grid-template-columns: 1fr; } }
.footer-col h3 {
  font-family: var(--font-mono);
  font-size: var(--size-eyebrow);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin: 0 0 1rem;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a {
  color: var(--ink-soft);
  text-decoration: none;
}
.footer-col a:hover,
.footer-col a:focus-visible {
  color: var(--vermilion);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.icp-placeholder {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--ink-faint);
}
.footer-bottom {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--ink-faint);
  margin: 0;
  max-width: none;
}

/* ─── Reduced motion ─── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .hero, section.act { opacity: 1; transform: none; }
}