/* =========================================================
   Acousmos shared components

   Reusable type, buttons, sections, cards, FAQ, and download CTA.
   Page files may position these components, but must not redefine them.
   ========================================================= */

@import url("./tokens.css?v=20260531-numbering");

.display {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.05;
}

.eyebrow,
.section-prelude {
  font-family: var(--font-serif);
  font-style: italic;
  text-transform: uppercase;
  color: var(--color-amber-deep);
  font-weight: 500;
  opacity: 0.9;
}

.eyebrow {
  font-size: 0.95rem;
  letter-spacing: 0.22em;
}

.section-prelude {
  display: inline-block;
  position: relative;
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.25em;
}

.section-prelude::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-amber) 0%, transparent 100%);
  transform: scaleX(0);
  transform-origin: 0 0;
  transition: transform 1.1s var(--ease-standard) 0.25s;
}

.section-prelude.is-visible::after,
.reveal.is-visible .section-prelude::after {
  transform: scaleX(1);
}

.section {
  padding: 5rem 0;
  position: relative;
  z-index: 1;
}

.section-head {
  max-width: 640px;
  margin-bottom: 2.6rem;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-title {
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  margin: 0.7rem 0 0.8rem;
}

.section-lede {
  font-size: 1.1rem;
  color: var(--color-ink-soft);
}

.hero-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin: 1.8rem 0 1.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: var(--font-sans);
  font-size: 0.98rem;
  font-weight: 600;
  padding: 0.85rem 1.5rem;
  border-radius: 12px;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    transform 0.12s var(--ease-standard),
    box-shadow 0.2s,
    background 0.2s,
    border-color 0.2s,
    color 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border-strong);
}

.btn-ghost:hover {
  border-color: var(--color-ink);
  transform: translateY(-2px);
}

.btn-amber {
  background: linear-gradient(135deg, #d4a24a, var(--color-amber));
  color: #fff;
  box-shadow: var(--shadow-amber);
}

.btn-amber:hover {
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 1.9rem;
  font-size: 1.05rem;
}

.btn-download {
  padding: 1rem 2rem;
  font-size: 1rem;
  border-radius: 100px;
  font-family: var(--font-sans);
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--color-ink);
  color: var(--color-paper);
  transition: all 0.3s var(--ease-standard);
  box-shadow: 0 10px 30px rgba(27, 24, 34, 0.18);
  letter-spacing: 0.01em;
  border: none;
  cursor: pointer;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 44px rgba(27, 24, 34, 0.24);
}

.download {
  padding: 7rem 2rem;
}

.download-card {
  max-width: var(--width-medium);
  margin: 0 auto;
  padding: 4rem 3rem;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.download-card > * {
  position: relative;
  z-index: 1;
}

.download-prelude {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--color-amber);
  letter-spacing: 0.25em;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  opacity: 0.85;
  display: inline-block;
  padding-bottom: 0.5rem;
  position: relative;
}

.download-prelude::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--color-amber) 50%, transparent 100%);
  transform: translateX(-50%) scaleX(0);
  transition: transform 1s var(--ease-standard) 0.3s;
}

.download-card.is-visible .download-prelude::after {
  transform: translateX(-50%) scaleX(1);
}

.download-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: var(--color-ink);
}

.download-sub {
  color: var(--color-ink-soft);
  font-size: 1.1rem;
  line-height: 1.7;
  margin: 0 auto 2.5rem;
  max-width: var(--width-prose);
}

.download-actions {
  margin-bottom: 2rem;
}

.download-meta {
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  font-size: 0.88rem;
  color: var(--color-ink-soft);
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.download-meta .dot {
  color: var(--color-ink-muted);
  opacity: 0.6;
}

.download-fineprint {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.92rem;
  color: rgba(27, 24, 34, 0.58);
  max-width: 440px;
  margin: 0 auto !important;
  line-height: 1.55;
}

.download-fineprint a,
.download-fineprint a:visited {
  color: var(--color-amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 162, 74, 0.35);
  transition: color 0.2s, border-color 0.2s;
}

.download-fineprint a:hover {
  color: var(--color-amber-deep);
  border-bottom-color: var(--color-amber-deep);
}

.step,
.feature {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.step {
  padding: 1.8rem;
}

.sequence-num,
.ordinal-mark {
  font-family: var(--font-serif);
  color: var(--color-amber);
  line-height: 1;
  display: block;
}

.sequence-num {
  font-size: 2.2rem;
  font-style: normal;
  font-variant-numeric: lining-nums;
  margin-bottom: 0.9rem;
}

.ordinal-mark {
  font-size: 1.5rem;
  font-style: italic;
  letter-spacing: 0.12em;
  margin-bottom: 1rem;
}

.step h3 {
  font-size: 1.2rem;
  margin: 0.7rem 0 0.4rem;
}

.step p {
  color: var(--color-ink-soft);
  font-size: 0.96rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.3rem;
}

.feature {
  padding: 1.4rem 1.5rem;
}

.feature h4,
.feature h3 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.feature p {
  color: var(--color-ink-soft);
  font-size: 0.92rem;
}

.feature .fi {
  color: var(--color-amber);
  font-size: 1.2rem;
}

.faq {
  max-width: 760px;
  margin: 0 auto;
}

.faq details {
  border-bottom: 1px solid var(--color-border);
  padding: 1.1rem 0;
}

.faq summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  color: var(--color-amber);
  font-size: 1.3rem;
  line-height: 1;
}

.faq details[open] summary::after {
  content: "-";
}

.faq p {
  color: var(--color-ink-soft);
  margin-top: 0.7rem;
  font-size: 0.96rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.88em;
  color: var(--color-amber-deep);
  background: rgba(184, 128, 31, 0.08);
  border: 1px solid rgba(184, 128, 31, 0.16);
  border-radius: 4px;
  padding: 0.05rem 0.28rem;
}

@media (max-width: 900px) {
  .features {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 3.8rem 0;
  }

  .download-card {
    padding: 3rem 1.5rem;
  }

  .btn-download {
    padding: 0.9rem 1.5rem;
    font-size: 0.95rem;
  }

  .download-meta {
    font-size: 0.82rem;
    gap: 0.4rem;
  }
}