/* ============================================================
   GlowTech — shared stylesheet
   Concept: the page is a marked-up manuscript. Amber highlighter
   marks the borrowed text, exactly as the product marks pasted
   text inside a student's document.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,300;0,6..72,400;0,6..72,500;1,6..72,300;1,6..72,400&family=Inter+Tight:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --paper:      #FBFAF6;
  --panel:      #F2F0E8;
  --ink:        #14160F;
  --ink-soft:   #3D4236;
  --muted:      #71765F;
  --rule:       #E0DED2;
  --mark:       #FFD447;   /* highlighter — "this was pasted" */
  --mark-soft:  #FFF0BC;
  --glow:       #A9E80C;   /* brand lime */
  --glow-deep:  #5F8600;   /* lime, legible on paper */

  --display: 'Newsreader', Georgia, 'Times New Roman', serif;
  --body:    'Inter Tight', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --data:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --gutter: clamp(1.25rem, 5vw, 5rem);
  --measure: 68rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; display: block; }

a { color: inherit; }

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

.wrap {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wrap-narrow {
  max-width: 46rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- shared type ---------- */

.eyebrow {
  font-family: var(--data);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.25rem;
}

.h-display {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.4rem, 6.2vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: -0.022em;
  margin: 0;
}

.h-section {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.85rem, 3.6vw, 2.75rem);
  line-height: 1.12;
  letter-spacing: -0.018em;
  margin: 0 0 1rem;
}

.h-sub {
  font-family: var(--body);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.005em;
  margin: 0 0 0.5rem;
}

.lede {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 38rem;
}

.italic { font-style: italic; }

em.mark,
.mark {
  background: linear-gradient(180deg, transparent 12%, var(--mark) 12%, var(--mark) 88%, transparent 88%);
  font-style: inherit;
  padding: 0 0.12em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* ---------- header ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}

.masthead .bar {
  max-width: var(--measure);
  margin-inline: auto;
  padding: 0.9rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  text-decoration: none;
  font-family: var(--display);
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}

.logo > span {
    line-height: 1;
    position: relative;
    top: 3px;
}

.logo .spark {
  width: 0.6rem;
  height: 0.6rem;
  background: var(--glow);
  border-radius: 50%;
  align-self: center;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--glow) 22%, transparent);
}

.logo .co { color: var(--muted); font-size: 0.95rem; }

.nav {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 2.5vw, 2rem);
  font-size: 0.9rem;
}

.nav a { text-decoration: none; color: var(--ink-soft); }
.nav a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--body);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  border: 1px solid var(--ink);
  text-decoration: none;
  transition: transform 0.12s ease, background 0.15s ease, color 0.15s ease;
}

.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { transform: translateY(-1px); background: #000; }

.btn-quiet { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn-quiet:hover { border-color: var(--ink); }

.btn-glow { background: var(--glow); border-color: var(--glow); color: var(--ink); }
.btn-glow:hover { transform: translateY(-1px); }

/* ---------- section rhythm ---------- */

.band { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.band-rule { border-top: 1px solid var(--rule); }
.band-panel { background: var(--panel); }

.band-slab {
  background: var(--ink);
  color: var(--paper);
}
.band-slab .h-section { color: var(--paper); }
.band-slab .lede { color: #C7CCBB; }
.band-slab .eyebrow { color: var(--glow); }

/* ============================================================
   HERO — the signature: a writing session replaying itself
   ============================================================ */

.hero { padding-block: clamp(3rem, 7vw, 5.5rem) clamp(2.5rem, 6vw, 4.5rem); }

.hero-grid {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  grid-template-columns: 1fr;
  align-items: start;
}

@media (min-width: 62rem) {
  .hero-grid { grid-template-columns: 1.02fr 0.98fr; gap: clamp(3rem, 5vw, 4.5rem); }
}

.hero-copy .h-display { margin-bottom: 1.35rem; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* the replay device */

.replay {
  border: 1px solid var(--rule);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 1px 0 var(--rule), 0 22px 45px -32px rgba(20, 22, 15, 0.5);
  overflow: hidden;
}

.replay-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0.95rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--data);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.replay-head .live {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--ink);
}

.replay-head .dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--glow);
}

.replay-page {
  font-family: var(--display);
  font-size: 1.0625rem;
  line-height: 1.72;
  padding: 1.6rem 1.5rem 1.2rem;
  min-height: 12.5rem;
}

.replay-page .caret {
  display: inline-block;
  width: 1px;
  height: 1.05em;
  background: var(--ink);
  vertical-align: -0.16em;
  margin-left: 1px;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.replay-page .pasted {
  background: var(--mark);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--mark) 70%, var(--ink) 12%);
  border-radius: 2px;
}

.replay-track {
  padding: 0.9rem 0.95rem;
  border-top: 1px solid var(--rule);
  background: var(--panel);
}

.track-line {
  position: relative;
  height: 4px;
  background: var(--rule);
  border-radius: 2px;
}

.track-fill {
  position: absolute;
  inset-block: 0;
  left: 0;
  width: 0%;
  background: var(--ink);
  border-radius: 2px;
}

.track-tick {
  position: absolute;
  top: -5px;
  width: 3px;
  height: 14px;
  background: var(--mark);
  border-radius: 1px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.track-tick.on { opacity: 1; }

.replay-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.9rem;
  font-family: var(--data);
}

.replay-stats div { line-height: 1.25; }
.replay-stats b { display: block; font-size: 1.05rem; font-weight: 500; }
.replay-stats span {
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.replay-legend {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.95rem;
  border-top: 1px solid var(--rule);
  font-family: var(--data);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.replay-legend i {
  width: 0.7rem;
  height: 0.7rem;
  background: var(--mark);
  border-radius: 2px;
  display: inline-block;
}

/* ============================================================
   content blocks
   ============================================================ */

.split {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3.5rem);
  grid-template-columns: 1fr;
}

@media (min-width: 56rem) {
  .split { grid-template-columns: 0.85fr 1.15fr; }
}

.prose p { max-width: 36rem; }
.prose p + p { margin-top: 1.1rem; }

/* claim list — the case, stated plainly */

.claims {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.band-slab .claims { border-color: rgba(255,255,255,0.14); }

.claims li {
  border-bottom: 1px solid var(--rule);
  padding: 1.15rem 0;
  display: grid;
  gap: 0.35rem;
}

.band-slab .claims li { border-color: rgba(255,255,255,0.14); }

.claims .k {
  font-family: var(--data);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.band-slab .claims .k { color: var(--glow); }

.claims .v { font-size: 1.0625rem; line-height: 1.55; }
.band-slab .claims .v { color: #E4E7DC; }

/* product cards */

.cards {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
  margin-top: 2.5rem;
}

@media (min-width: 50rem) {
  .cards { grid-template-columns: 1fr 1fr; }
}

.card {
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 1.6rem 1.5rem;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.card .tag {
  font-family: var(--data);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--glow-deep);
}

.card h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.65rem;
  letter-spacing: -0.015em;
  margin: 0;
}

.card p { margin: 0; color: var(--ink-soft); font-size: 0.9875rem; }

.card .card-link {
  margin-top: auto;
  padding-top: 0.9rem;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 0;
}

.card .card-link span {
  border-bottom: 1.5px solid var(--mark);
  padding-bottom: 2px;
}

.card .card-link:hover span { border-color: var(--ink); }

/* step sequence — order genuinely matters here */

.steps {
  counter-reset: step;
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.steps li {
  counter-increment: step;
  display: grid;
  gap: 0.3rem 1.5rem;
  grid-template-columns: 3.5rem 1fr;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
}

.band-slab .steps li { border-color: rgba(255,255,255,0.14); }

.steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--data);
  font-size: 0.8125rem;
  color: var(--muted);
  grid-row: span 2;
  padding-top: 0.25rem;
}

.band-slab .steps li::before { color: var(--glow); }

.steps h3 {
  margin: 0;
  font-family: var(--body);
  font-size: 1.0625rem;
  font-weight: 600;
}

.steps p { margin: 0; color: var(--ink-soft); max-width: 40rem; font-size: 0.9875rem; }
.band-slab .steps p { color: #C7CCBB; }

/* feature grid */

.features {
  display: grid;
  gap: 1.75rem 2.5rem;
  grid-template-columns: 1fr;
  margin-top: 2.5rem;
}

@media (min-width: 44rem) { .features { grid-template-columns: 1fr 1fr; } }
@media (min-width: 68rem) { .features { grid-template-columns: repeat(3, 1fr); } }

.feature { border-top: 2px solid var(--ink); padding-top: 0.9rem; }
.feature h3 { margin: 0 0 0.35rem; font-size: 1rem; font-weight: 600; }
.feature p { margin: 0; font-size: 0.9375rem; color: var(--ink-soft); }
.feature.is-mark { border-top-color: var(--mark); }
.feature.is-glow { border-top-color: var(--glow); }

/* metric glossary */

.metrics {
  display: grid;
  gap: 0;
  margin-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,0.14);
}

.metric {
  display: grid;
  gap: 0.25rem 2rem;
  grid-template-columns: 1fr;
  padding: 1.15rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}

@media (min-width: 48rem) {
  .metric { grid-template-columns: 14rem 1fr; align-items: baseline; }
}

.metric dt {
  font-family: var(--data);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--glow);
}

.metric dd { margin: 0; color: #C7CCBB; font-size: 0.9875rem; }

/* video */

.player {
  margin-top: 2.5rem;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--rule);
  background: var(--ink);
  box-shadow: 0 30px 60px -40px rgba(20, 22, 15, 0.65);
}

.player video { width: 100%; height: auto; aspect-ratio: 16 / 9; }

.player-note {
  font-family: var(--data);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
}

/* chapter list next to the video */

.chapters {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.chapters li {
  display: grid;
  grid-template-columns: 4.25rem 1fr;
  gap: 1rem;
  font-size: 0.9375rem;
  align-items: baseline;
}

.chapters time {
  font-family: var(--data);
  font-size: 0.8125rem;
  color: var(--glow-deep);
}

/* two-audience table */

.perspectives {
  display: grid;
  gap: 0;
  margin-top: 2.5rem;
  border-top: 1px solid var(--rule);
}

@media (min-width: 52rem) {
  .perspectives { grid-template-columns: 1fr 1fr; gap: 0 3rem; }
}

.perspective { padding: 1.5rem 0 0.5rem; }
.perspective h3 { font-family: var(--display); font-weight: 400; font-size: 1.5rem; margin: 0 0 0.9rem; }
.perspective ul { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.5rem; }
.perspective li { font-size: 0.9375rem; color: var(--ink-soft); }

/* pull quote */

.pull {
  font-family: var(--display);
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
  line-height: 1.28;
  letter-spacing: -0.018em;
  margin: 0;
  max-width: 32ch;
}

/* CTA */

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* footer */

.foot {
  border-top: 1px solid var(--rule);
  padding-block: 2.5rem 3rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.foot-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  justify-content: space-between;
  align-items: flex-start;
}

.foot a { text-decoration: none; }
.foot a:hover { text-decoration: underline; text-underline-offset: 4px; }

.foot-links { display: flex; flex-wrap: wrap; gap: 1.25rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- legal / policy pages ---------- */

.legal-head { margin-bottom: 2rem; }
.legal-head .h-section { margin-bottom: 0.6rem; }

.legal-dates {
  font-family: var(--data);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}

.legal-sec {
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
}

.legal-h {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  line-height: 1.25;
  margin: 0 0 1rem;
}

.legal-text {
  margin: 0 0 1.1rem;
  color: var(--ink-soft);
}
.legal-text:last-child { margin-bottom: 0; }

.legal-callout {
  margin: 0 0 1.1rem;
  padding: 1.1rem 1.25rem;
  background: var(--mark-soft);
  border-left: 3px solid var(--mark);
  border-radius: 0 8px 8px 0;
  font-size: 0.9875rem;
}

.legal-list {
  margin: 0 0 1.1rem;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.65rem;
  color: var(--ink-soft);
}
.legal-list strong { color: var(--ink); font-weight: 600; }

.legal-defs { margin: 0; }

.legal-defs dt {
  font-family: var(--data);
  font-size: 0.6875rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink);
  margin-top: 1.5rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule);
}
.legal-defs dt:first-child { margin-top: 0; padding-top: 0; border-top: 0; }

.legal-defs dd {
  margin: 0.5rem 0 0;
  color: var(--ink-soft);
  font-size: 0.9875rem;
}

.legal-link {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--mark);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.legal-link:hover { background: var(--mark-soft); }