/* Landing page only. The app's palette (themes.css) and base rules (style.css)
 * come first; everything here is layout for the marketing page and never loads
 * inside the trainer itself.
 *
 * Motion is opt-out: every animation below is disabled wholesale by the
 * prefers-reduced-motion block at the bottom, and the reveal script marks the
 * document so nothing starts hidden when JavaScript never runs. */

.landing {
  --gutter: clamp(1rem, 4vw, 2rem);
  display: block;
}

.wrap {
  width: min(100% - 2rem, var(--wrap));
  margin: 0 auto;
}

.landing section { scroll-margin-top: 5rem; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--main);
}

.section-head { margin-bottom: 2rem; }
.section-head h2 {
  color: var(--text);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  letter-spacing: -0.02em;
  margin-top: 0.4rem;
}
.section-head p {
  margin-top: 0.6rem;
  max-width: 60ch;
  color: var(--sub);
}

/* ── buttons ───────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 999px;
  padding: 0.7rem 1.35rem;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: transform 140ms ease, background 140ms ease,
              border-color 140ms ease, color 140ms ease;
}
.btn:hover { transform: translateY(-2px); border-color: var(--sub-alt); }

.btn-primary {
  background: var(--main);
  border-color: var(--main);
  color: var(--bg);
  font-weight: 600;
}
.btn-primary:hover { background: var(--main); filter: brightness(1.08); }
.btn-primary .arrow { transition: transform 140ms ease; }
.btn-primary:hover .arrow { transform: translateX(3px); }

.btn-ghost { color: var(--sub); }
.btn-ghost:hover { color: var(--text); }
.btn svg { display: block; }

.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.88rem; }

/* ── hero ──────────────────────────────────────────────────────────── */

.hero {
  position: relative;
  padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(2rem, 5vw, 3.5rem);
  overflow: hidden;
}

/* A single soft accent wash behind the hero. Painted with the theme accent so
 * it re-tints for free when the palette changes. */
.hero::before {
  content: '';
  position: absolute;
  inset: -30% 0 auto 50%;
  width: min(900px, 120vw);
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, color-mix(in srgb, var(--main) 16%, transparent) 0%, transparent 62%);
  pointer-events: none;
  z-index: 0;
}

.hero > .wrap { position: relative; z-index: 1; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}

.hero h1 {
  color: var(--text);
  font-size: clamp(2.1rem, 5.4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0.8rem 0 0;
}
.hero h1 em {
  font-style: normal;
  color: var(--main);
}

.hero-sub {
  margin-top: 1.1rem;
  font-size: 1.08rem;
  max-width: 46ch;
  color: var(--sub);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.8rem;
}

.hero-note {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--sub-alt);
}

/* ── the live demo ─────────────────────────────────────────────────── */

.demo {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem 1.2rem 1.3rem;
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.75);
}

.demo-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--sub-alt);
}
.demo-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--surface-2);
}
.demo-url { margin-left: auto; }

.demo-live {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin: 1rem 0 0.6rem;
  font-family: var(--mono);
}
.demo-count { color: var(--main); font-size: 1.6rem; font-weight: 600; }
.demo-meta { color: var(--sub); font-size: 0.85rem; }

.demo-text {
  font-family: var(--mono);
  font-size: clamp(1rem, 2.1vw, 1.2rem);
  line-height: 1.75;
  color: var(--sub);
  min-height: 5.25em;
  word-break: break-word;
}
.demo-text .ok { color: var(--text); }
.demo-text .bad {
  color: var(--error);
  text-decoration: underline;
  text-decoration-color: var(--error);
}
.demo-caret {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  margin: 0 -1px;
  vertical-align: text-bottom;
  background: var(--main);
  animation: demo-blink 1s steps(1) infinite;
}
@keyframes demo-blink { 50% { opacity: 0; } }

.demo-kb {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 1.1rem;
  align-items: center;
}
.demo-kb-row { display: flex; gap: 5px; }
.demo-key {
  width: clamp(20px, 2.6vw, 28px);
  height: clamp(20px, 2.6vw, 28px);
  display: grid;
  place-items: center;
  border-radius: 5px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--sub);
  transition: background 90ms ease, color 90ms ease, transform 90ms ease;
}
.demo-key.wide { width: clamp(74px, 12vw, 130px); }
.demo-key.is-hit {
  background: var(--main);
  border-color: var(--main);
  color: var(--bg);
  transform: translateY(1px);
}

/* ── numbers strip ─────────────────────────────────────────────────── */

.figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.figure {
  background: var(--bg);
  padding: 1.2rem 1.1rem;
}
.figure-value {
  font-family: var(--mono);
  font-size: 1.75rem;
  color: var(--main);
  line-height: 1.1;
}
.figure-label {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--sub);
}

/* ── generic sections ──────────────────────────────────────────────── */

.band { padding: clamp(3rem, 8vw, 5.5rem) 0; }
.band-alt {
  background: var(--surface);
  border-block: 1px solid var(--border);
}

/* ── steps ─────────────────────────────────────────────────────────── */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  counter-reset: step;
}
.step {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem;
  position: relative;
  overflow: hidden;
  transition: border-color 160ms ease, transform 160ms ease;
}
.band-alt .step { background: var(--bg); }
.step:hover { border-color: var(--sub-alt); transform: translateY(-3px); }
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--main);
}
.step h3 {
  margin: 0.6rem 0 0.45rem;
  color: var(--text);
  font-size: 1.05rem;
}
.step p { font-size: 0.94rem; }

.step-visual {
  height: 7rem;
  margin-bottom: 1rem;
  border-radius: calc(var(--radius) - 2px);
  background: var(--surface-2);
}
.mini-keys {
  display: grid;
  grid-template-columns: repeat(4, 2rem);
  place-content: center;
  gap: 0.4rem;
}
.mini-keys span {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-bottom: 3px solid var(--main);
  border-radius: 5px;
  color: var(--text);
  font-family: var(--mono);
  animation: key-pop 2.4s ease-in-out infinite;
}
.mini-keys span:nth-child(2n) { animation-delay: 300ms; }
.mini-stats {
  display: grid;
  grid-template-columns: auto 1fr;
  align-content: center;
  gap: 0 0.45rem;
  padding: 1rem 1.4rem;
}
.mini-stats strong { color: var(--main); font: 2rem var(--mono); }
.mini-stats span { align-self: end; padding-bottom: 0.3rem; }
.mini-stats i {
  grid-column: 1 / -1;
  height: 4px;
  margin-top: 0.45rem;
  border-radius: 999px;
  background: var(--main);
  transform-origin: left;
  animation: meter-scan 2.4s ease-in-out infinite alternate;
}
.mini-stats i:nth-of-type(2) { width: 78%; animation-delay: 180ms; }
.mini-stats i:nth-of-type(3) { width: 55%; animation-delay: 360ms; }
.mini-drill {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  padding: 1rem;
}
.mini-drill span {
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--sub);
  font-family: var(--mono);
  font-size: 0.8rem;
  animation: chip-float 2.6s ease-in-out infinite;
}
.mini-drill span:nth-child(2) { color: var(--main); border-color: var(--main); animation-delay: 250ms; }
.mini-drill span:nth-child(3) { animation-delay: 500ms; }

@keyframes key-pop { 50% { color: var(--bg); background: var(--main); transform: translateY(2px); } }
@keyframes meter-scan { from { transform: scaleX(0.25); opacity: 0.4; } to { transform: scaleX(1); opacity: 1; } }
@keyframes chip-float { 50% { transform: translateY(-4px); } }

/* ── previews ──────────────────────────────────────────────────────── */

.shots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.shot {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: transform 180ms ease, border-color 180ms ease;
}
.shot:hover { transform: translateY(-4px); border-color: var(--main); }
/* The files themselves are cropped to the interesting part of the capture, so
 * this only has to scale them. */
.shot img {
  display: block;
  width: 100%;
  height: auto;
  border-bottom: 1px solid var(--border);
  transition: transform 320ms ease;
}
.shot:hover img { transform: scale(1.015); }
.shot figcaption {
  padding: 0.9rem 1.1rem;
  font-size: 0.9rem;
  color: var(--sub);
}
.shot figcaption b { color: var(--text); font-weight: 600; display: block; }

/* The heatmap card is built from markup rather than a screenshot: a real one
 * needs somebody's accumulated history to look like anything. */
.heatcard {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.heatgrid {
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  margin: auto 0;
}
.heatgrid .demo-key { color: var(--text); }
.heat-scale {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--sub);
}
.heat-bar {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--main), var(--error));
}

/* ── features ──────────────────────────────────────────────────────── */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
}
.feature {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  background: var(--surface);
  text-align: center;
  transition: border-color 160ms ease, transform 160ms ease;
}
.band-alt .feature { background: var(--bg); }
.feature:hover { border-color: var(--sub-alt); transform: translateY(-3px); }
.feature-icon { font-size: 2rem; line-height: 1; }
.feature h3 {
  margin: 0.6rem 0 0.4rem;
  font-size: 1rem;
  color: var(--text);
}
/* ── quotes ────────────────────────────────────────────────────────── */

.quotes-title {
  color: var(--text);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  letter-spacing: -0.02em;
  margin: 0.4rem 0 1rem;
}

.quote-rotator {
  font-family: var(--mono);
  font-size: clamp(1rem, 2.4vw, 1.3rem);
  line-height: 1.7;
  color: var(--text);
  min-height: 4.5em;
  max-width: 50ch;
  margin: 0 auto;
}
.quote-band { text-align: center; }
.quote-band .section-head { margin-bottom: 1rem; }
.quote-rotator .who {
  display: block;
  margin-top: 0.7rem;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.85rem;
  color: var(--sub);
}

/* ── faq ───────────────────────────────────────────────────────────── */

.faq { display: grid; gap: 0.6rem; }
.faq details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 0.9rem 1.1rem;
}
.band-alt .faq details { background: var(--bg); }
.faq summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 500;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  color: var(--main);
  font-family: var(--mono);
}
.faq details[open] summary::after { content: '−'; }
.faq details p { margin-top: 0.7rem; font-size: 0.94rem; max-width: 70ch; }

/* ── closing call to action ────────────────────────────────────────── */

.closing {
  text-align: center;
  padding: clamp(3rem, 8vw, 5.5rem) 0;
}
.closing h2 {
  color: var(--text);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
}
.closing p { margin: 0.8rem auto 0; max-width: 48ch; }
.closing .hero-actions { justify-content: center; }

/* ── reveal-on-scroll ──────────────────────────────────────────────── */

/* Only applied once the script has confirmed it can undo it. */
.js-reveal .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 520ms ease, transform 520ms ease;
}
.js-reveal .reveal.is-in { opacity: 1; transform: none; }

/* ── responsive ────────────────────────────────────────────────────── */

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .demo { order: 2; }
}

@media (prefers-reduced-motion: reduce) {
  .js-reveal .reveal { opacity: 1; transform: none; transition: none; }
  .demo-caret { animation: none; }
  .btn:hover, .step:hover, .feature:hover, .shot:hover { transform: none; }
  .demo-key { transition: none; }
  .mini-keys span, .mini-stats i, .mini-drill span { animation: none; }
  .shot img { transition: none; }
}