/* dance-system.com — product one-pager.
   Brand: docs/brand/README.md (Ink / Paper / Spotlight, Bricolage Grotesque + Inter).
   Fonts are self-hosted (no Google Fonts link), same GDPR reasoning as the apps. */

@font-face {
  font-family: "Bricolage Grotesque";
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url("fonts/bricolage-grotesque-latin-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Bricolage Grotesque";
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url("fonts/bricolage-grotesque-latin-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("fonts/inter-latin-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("fonts/inter-latin-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --ink: #161a23;
  --paper: #fafbfc;
  --surface: #ffffff;
  --text: #161a23;
  --muted: #555c6b;
  --line: #e3e5eb;
  --wash: #f2f3f6;
  --spot: #e8356a;
  --spot-text: #c21f52;
  --spot-soft: rgba(232, 53, 106, 0.1);
  --ok: #1d7a4a;
  --ok-soft: rgba(29, 122, 74, 0.12);
  --warn: #9a5b00;
  --warn-soft: rgba(196, 122, 0, 0.14);
  --band-bg: #161a23;
  --band-text: #fafbfc;
  --band-muted: #b4b9c6;

  --display: "Bricolage Grotesque", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --maxw: 1120px;
  --radius: 14px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1218;
    --surface: #171b24;
    --text: #eef0f4;
    --muted: #a3a9b7;
    --line: #2a303c;
    --wash: #1c212b;
    --spot: #ff5c8a;
    --spot-text: #ff7aa0;
    --spot-soft: rgba(255, 92, 138, 0.14);
    --ok: #5fd197;
    --ok-soft: rgba(95, 209, 151, 0.14);
    --warn: #f0b458;
    --warn-soft: rgba(240, 180, 88, 0.14);
    --band-bg: #1c212b;
    color-scheme: dark;
  }
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--spot);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 20px;
}

h1, h2, h3 {
  font-family: var(--display);
  line-height: 1.08;
  letter-spacing: -0.022em;
  text-wrap: balance;
  margin: 0;
}
h1 { font-size: clamp(2.3rem, 6vw, 4rem); font-weight: 720; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.18rem; font-weight: 650; letter-spacing: -0.01em; line-height: 1.25; }
p { margin: 0; }

.eyebrow {
  font: 600 0.78rem/1.2 var(--body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--spot-text);
}
.lead { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }
.section-head { display: grid; gap: 14px; max-width: 720px; }
.section-head p { color: var(--muted); }

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

.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-family: var(--display);
  font-size: 1.3rem;
  letter-spacing: -0.022em;
  min-height: 44px;
}
.brand svg { width: 30px; height: 30px; flex: none; }
.brand .w1 { font-weight: 720; }
.brand .w2 { font-weight: 420; }
.mark-ink { fill: currentColor; }
.mark-ink-stroke { stroke: currentColor; }
.mark-spot { fill: var(--spot); }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 12px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--muted);
  border-radius: 10px;
}
.nav a:hover { color: var(--text); background: var(--wash); }
.nav .lang {
  color: var(--text);
  font-weight: 600;
  border: 1px solid var(--line);
  min-width: 44px;
  justify-content: center;
}
@media (max-width: 640px) {
  .nav .nav-link { display: none; }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font: 600 1rem/1 var(--body);
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: transform 0.15s ease, background-color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--text); color: var(--paper); }
.btn-primary:hover { background: var(--spot); color: #fff; }
.btn-outline { border-color: var(--line); color: var(--text); background: var(--surface); }
.btn-outline:hover { border-color: var(--text); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- hero ---------- */

.hero { padding-block: clamp(40px, 7vw, 88px) clamp(48px, 7vw, 96px); }
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.hero-copy { display: grid; gap: 22px; }
.hero h1 .spot { color: var(--spot); }
.hero-note { font-size: 0.9rem; color: var(--muted); }
@media (max-width: 880px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); }
}

/* product preview: a slice of the real reception "today" screen */
.preview {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 1px 2px rgba(22, 26, 35, 0.04), 0 24px 48px -24px rgba(22, 26, 35, 0.25);
  overflow: hidden;
}
.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding: 18px 20px 12px;
  border-bottom: 1px solid var(--line);
}
.preview-head strong { font-family: var(--display); font-size: 1.1rem; font-weight: 650; }
.preview-head span { font-size: 0.85rem; color: var(--muted); }
.preview ul { list-style: none; margin: 0; padding: 4px 0; }
.preview li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 20px;
}
.preview li + li { border-top: 1px solid var(--line); }
.row-main { display: flex; gap: 12px; align-items: flex-start; min-width: 0; }
.dot { width: 10px; height: 10px; border-radius: 50%; margin-top: 7px; flex: none; }
.row-title { font-weight: 600; font-size: 0.98rem; line-height: 1.35; }
.row-sub { font-size: 0.84rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  background: var(--wash);
  color: var(--muted);
}
.chip-ok { background: var(--ok-soft); color: var(--ok); }
.chip-warn { background: var(--warn-soft); color: var(--warn); }
.chip-spot { background: var(--spot-soft); color: var(--spot-text); }
.preview-foot {
  padding: 12px 20px 16px;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--wash);
}

/* ---------- answer block (AEO: the one-paragraph definition) ---------- */

.answer { padding-block: 0 clamp(56px, 8vw, 96px); }
.answer-box {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 24px 48px;
  padding-block: 32px;
  border-top: 2px solid var(--text);
}
.answer-box p { font-size: 1.12rem; }
.answer-box dl {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 8px 20px;
  margin: 20px 0 0;
  font-size: 0.95rem;
}
.answer-box dt { color: var(--muted); }
.answer-box dd { margin: 0; font-weight: 500; }
@media (max-width: 760px) {
  .answer-box { grid-template-columns: minmax(0, 1fr); }
  .answer-box dl { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .answer-box dd { margin-bottom: 10px; }
}

/* ---------- features ---------- */

.features { padding-block: clamp(56px, 8vw, 96px); background: var(--wash); }
.features .wrap { display: grid; gap: 40px; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.feature {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 26px 24px 28px;
  background: var(--surface);
}
.feature p { color: var(--muted); font-size: 0.97rem; }
.feature .tag { justify-self: start; }

/* ---------- count-in (how it works) ---------- */

.countin { padding-block: clamp(56px, 8vw, 96px); }
.countin .wrap { display: grid; gap: 40px; }
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}
.steps li { display: grid; gap: 10px; align-content: start; }
.count {
  font-family: var(--display);
  font-weight: 760;
  font-size: 3.4rem;
  line-height: 1;
  color: var(--spot);
  letter-spacing: -0.04em;
}
.steps p { color: var(--muted); font-size: 0.97rem; }
@media (max-width: 880px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .steps { grid-template-columns: minmax(0, 1fr); } }

/* ---------- audiences ---------- */

.styles { padding-block: 0 clamp(56px, 8vw, 96px); }
.styles .wrap { display: grid; gap: 20px; }
.style-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.style-list li {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  background: var(--surface);
}

/* ---------- FAQ ---------- */

.faq { padding-block: clamp(56px, 8vw, 96px); border-top: 1px solid var(--line); }
.faq .wrap { display: grid; gap: 36px; }
.faq-list { display: grid; gap: 0; margin: 0; max-width: 820px; }
.faq-item { padding-block: 22px; border-bottom: 1px solid var(--line); display: grid; gap: 8px; }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-item h3 { font-size: 1.12rem; }
.faq-item p { color: var(--muted); }

/* ---------- closing band + footer ---------- */

.band { background: var(--band-bg); color: var(--band-text); padding-block: clamp(56px, 8vw, 88px); }
.band .wrap { display: grid; gap: 20px; justify-items: start; }
.band p { color: var(--band-muted); max-width: 60ch; }
.band .btn-primary { background: var(--band-text); color: var(--band-bg); }
.band .btn-primary:hover { background: var(--spot); color: #fff; }
.band .btn-outline { background: transparent; color: var(--band-text); border-color: rgba(250, 251, 252, 0.3); }
.band .btn-outline:hover { border-color: var(--band-text); }

.site-footer { padding-block: 32px 40px; font-size: 0.9rem; color: var(--muted); }
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  align-items: center;
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 4px 20px; }
.site-footer a { text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; }
.site-footer a:hover { color: var(--text); }