/* ─── Reset ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── Design tokens ─────────────────────────────── */
:root {
  color-scheme: dark;
  --teal:    #14b8a6;
  --teal-h:  #0d9488;
  --bg:      #0d0d14;
  --card:    #161622;
  --border:  #1f1f2e;
  --text:    #ffffff;
  --muted:   #9ca3af;
  --subtle:  #6b7280;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, monospace;
}

html  { scroll-behavior: smooth; }
body  {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: var(--sans); }

/* ─── Layout helpers ────────────────────────────── */
.container {
  max-width: 56rem;
  margin-inline: auto;
  padding-inline: 1rem;
}
.container--narrow {
  max-width: 36rem;
  margin-inline: auto;
  padding-inline: 1rem;
}
.container--mid {
  max-width: 48rem;
  margin-inline: auto;
  padding-inline: 1rem;
}

/* ─── Navbar ────────────────────────────────────── */
.nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 50;
  height: 3.5rem;
  background: rgba(13,13,20,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  max-width: 64rem;
  margin-inline: auto;
  padding-inline: 1rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-weight: 600;
  letter-spacing: -.015em;
}
.nav__by {
  font-size: .75rem;
  color: var(--subtle);
  margin-left: .25rem;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: .875rem;
  color: var(--muted);
  list-style: none;
}
.nav__links a:hover { color: var(--text); }
.nav__links .btn-ghost {
  font-size: .75rem;
  border: 1px solid var(--border);
  border-radius: .25rem;
  padding: .25rem .75rem;
  color: var(--muted);
  transition: border-color .15s, color .15s;
}
.nav__links .btn-ghost:hover { border-color: rgba(20,184,166,.4); color: var(--teal); }
.nav__hide { display: none; }

/* ─── Hero ──────────────────────────────────────── */
.hero {
  padding-top: 8rem;
  padding-bottom: 5rem;
  text-align: center;
  background: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(20,184,166,.15) 0%, transparent 60%);
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.5rem;
}
.label-mono {
  color: var(--teal);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.badge {
  font-size: .7rem;
  background: rgba(234,179,8,.12);
  color: #facc15;
  border: 1px solid rgba(234,179,8,.2);
  padding: .2rem .6rem;
  border-radius: 9999px;
  font-weight: 500;
}
.hero__title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.035em;
  margin-bottom: 1.5rem;
}
.hero__title .accent { color: var(--teal); }
.hero__body {
  color: var(--muted);
  font-size: 1.125rem;
  max-width: 36rem;
  margin-inline: auto;
  line-height: 1.65;
  margin-bottom: 1rem;
}
.hero__sub {
  color: var(--subtle);
  font-size: .95rem;
  max-width: 30rem;
  margin-inline: auto;
  margin-bottom: 2.5rem;
}
.hero__sub strong { color: #d1d5db; }
.hero__btns {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
}

/* ─── Buttons ───────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-weight: 600;
  font-size: .875rem;
  padding: .75rem 1.75rem;
  border-radius: .5rem;
  border: none;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  white-space: nowrap;
}
.btn--primary {
  background: var(--teal);
  color: #fff;
}
.btn--primary:hover { background: var(--teal-h); }
.btn--primary:disabled { opacity: .6; cursor: not-allowed; }
.btn--outline {
  background: transparent;
  border: 1px solid var(--border);
  color: #d1d5db;
  font-weight: 500;
}
.btn--outline:hover { border-color: rgba(20,184,166,.4); }

/* ─── Divider quote ─────────────────────────────── */
.quote-bar {
  padding-block: 2.5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
blockquote {
  border-left: 4px solid var(--teal);
  padding-left: 1.5rem;
  padding-block: .25rem;
}
blockquote p {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.45;
}

/* ─── Stats row ─────────────────────────────────── */
.stats {
  padding-block: 3.5rem;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: .75rem;
  padding: 1.25rem;
  text-align: center;
  transition: box-shadow .2s;
}
.stat-card:hover { box-shadow: 0 0 0 1px rgba(20,184,166,.3); }
.stat-card__value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: .25rem;
}
.stat-card__label { font-size: .75rem; color: var(--subtle); line-height: 1.3; }

/* ─── Section chrome ────────────────────────────── */
.section {
  padding-block: 4rem;
  border-top: 1px solid var(--border);
}
.section__eyebrow {
  display: block;
  color: var(--teal);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.section__eyebrow::after {
  content: '';
  display: block;
  width: 2rem;
  height: 2px;
  background: var(--teal);
  margin-top: .5rem;
}
.section__title {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 700;
  margin-bottom: 2rem;
}

/* ─── Cards (features / workflow) ──────────────── */
.card-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: .75rem;
  padding: 1.5rem;
  transition: box-shadow .2s;
}
.card:hover { box-shadow: 0 0 0 1px rgba(20,184,166,.25); }
.card__icon {
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(20,184,166,.1);
  border-radius: .5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.card__title { font-weight: 700; margin-bottom: .5rem; }
.card__body  { font-size: .875rem; color: var(--muted); line-height: 1.65; }

/* Step cards */
.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: .75rem;
  padding: 1.5rem;
  display: flex;
  gap: 1rem;
  transition: box-shadow .2s;
}
.step-card:hover { box-shadow: 0 0 0 1px rgba(20,184,166,.25); }
.step-card__num {
  color: var(--teal);
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
}
.step-card__title { font-weight: 600; margin-bottom: .25rem; }
.step-card__body  { font-size: .875rem; color: var(--muted); line-height: 1.6; }

/* Stack list */
.stack-list { list-style: none; display: flex; flex-direction: column; gap: .75rem; }
.stack-list li {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .875rem;
  color: #d1d5db;
}

/* ─── Feedback form ─────────────────────────────── */
.form { display: flex; flex-direction: column; gap: 1rem; }
.form__row { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.form__field { display: flex; flex-direction: column; gap: .375rem; }
.form__label { font-size: .875rem; color: var(--muted); }
.form__input,
.form__select,
.form__textarea {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: .5rem;
  padding: .625rem 1rem;
  font-size: .875rem;
  color: var(--text);
  font-family: var(--sans);
  outline: none;
  transition: border-color .15s;
  -webkit-appearance: none;
}
.form__input::placeholder,
.form__textarea::placeholder { color: #4b5563; }
.form__input:focus,
.form__select:focus,
.form__textarea:focus { border-color: var(--teal); }
.form__textarea { resize: none; }
.form__error { color: #f87171; font-size: .875rem; display: none; }
.form__error.visible { display: block; }
.form__success {
  display: none;
  background: var(--card);
  border: 1px solid rgba(20,184,166,.3);
  border-radius: .75rem;
  padding: 2.5rem;
  text-align: center;
}
.form__success.visible { display: block; }
.form__success-icon {
  width: 3rem;
  height: 3rem;
  background: rgba(20,184,166,.1);
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}
.form__success-title { font-weight: 700; font-size: 1.125rem; margin-bottom: .5rem; }
.form__success-body  { color: var(--muted); font-size: .875rem; }
.form.hidden { display: none; }

/* ─── Footer ────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding-block: 2.5rem;
}
.footer__inner {
  max-width: 56rem;
  margin-inline: auto;
  padding-inline: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  font-size: .875rem;
  color: var(--subtle);
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: .5rem;
}
.footer__brand a:hover { color: var(--teal); }
.footer__links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
}
.footer__links a:hover { color: var(--text); }

/* ─── Legal pages ───────────────────────────────── */
.legal-page {
  min-height: 100vh;
  padding-top: 7rem;
  padding-bottom: 5rem;
}
.legal-page h1 {
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -.025em;
  margin-bottom: .5rem;
}
.legal-page .date { font-size: .75rem; color: var(--subtle); margin-bottom: 2.5rem; }
.legal-content { display: flex; flex-direction: column; gap: 2.5rem; font-size: .875rem; color: #d1d5db; line-height: 1.7; }
.legal-content h2 { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: .75rem; }
.legal-content p + p { margin-top: .625rem; }
.legal-content strong { color: var(--text); }
.legal-content a { color: var(--teal); }
.legal-content a:hover { text-decoration: underline; }
.legal-content ul { list-style: disc; padding-left: 1.25rem; margin-top: .5rem; display: flex; flex-direction: column; gap: .25rem; }
.legal-divider { border-top: 1px solid var(--border); padding-top: 1.5rem; }
.legal-content .avv-list { list-style: none; padding: 0; margin-top: .75rem; }
.legal-content .avv-list li + li { margin-top: .5rem; }

/* ─── Responsive ────────────────────────────────── */
@media (min-width: 640px) {
  .nav__by   { display: inline; }
  .nav__hide { display: inline; }
  .nav__inner { padding-inline: 1.5rem; }

  .hero__btns { flex-direction: row; justify-content: center; }

  .stats__grid { grid-template-columns: repeat(4, 1fr); }

  .card-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

  .form__row { grid-template-columns: repeat(2, 1fr); }

  .footer__inner { flex-direction: row; justify-content: space-between; }
}