/* SM DIGITAL HUB LLC — landing page styles
   Design notes (apple-design): system font with size-specific tracking/leading,
   translucent chrome with scroll-edge effect, instant press feedback,
   critically damped motion, and full reduced-motion / transparency / contrast support. */

:root {
  --bg: #fbfbfd;
  --bg-elevated: #ffffff;
  --bg-sunken: #f2f2f5;
  --text: #1d1d1f;
  --text-2: #515154;
  --text-3: #6e6e73;
  --line: rgba(0, 0, 0, 0.08);
  --accent: #2b59c3;
  --accent-strong: #1f47a3;
  --accent-soft: rgba(43, 89, 195, 0.08);
  --ok: #1f8a4c;
  --err: #c4291c;
  --chrome: rgba(251, 251, 253, 0.72);
  --chrome-edge: rgba(255, 255, 255, 0.5);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 2px 6px rgba(0, 0, 0, 0.04), 0 24px 48px -12px rgba(0, 0, 0, 0.12);
  --radius: 1.25rem;
  --radius-sm: 0.75rem;
  --wrap: 72rem;
  --gutter: clamp(1rem, 4vw, 2rem);
  /* Critically damped feel (no overshoot) — approximates a damping 1.0 / response 0.4 spring */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0d;
    --bg-elevated: #161618;
    --bg-sunken: #111113;
    --text: #f5f5f7;
    --text-2: #c7c7cc;
    --text-3: #98989d;
    --line: rgba(255, 255, 255, 0.1);
    --accent: #6e9bff;
    --accent-strong: #8fb2ff;
    --accent-soft: rgba(110, 155, 255, 0.12);
    --ok: #4cc47f;
    --err: #ff6b5e;
    --chrome: rgba(11, 11, 13, 0.7);
    --chrome-edge: rgba(255, 255, 255, 0.06);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 24px 48px -12px rgba(0, 0, 0, 0.6);
  }
}

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

html {
  font: 100%/1.5 system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 1.0625rem;
  letter-spacing: -0.003em;
  -webkit-font-smoothing: antialiased;
  font-optical-sizing: auto;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 0.18em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.skip {
  position: absolute; left: 1rem; top: -3rem; z-index: 100;
  background: var(--text); color: var(--bg); padding: 0.5rem 1rem; border-radius: 999px;
}
.skip:focus { top: 1rem; }

/* ---------- Type scale: tracking & leading tighten as size grows ---------- */
.display {
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 700;
  margin: 0;
}
.h2 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.028em;
  font-weight: 700;
  margin: 0;
}
.h3 {
  font-size: 1.3125rem;
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-weight: 600;
  margin: 0;
}
.lead {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--text-2);
  margin: 0;
}
.eyebrow {
  font-size: 0.8125rem;
  line-height: 1.3;
  letter-spacing: 0.02em;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 0.75rem;
}
.muted { color: var(--text-3); }
.small { font-size: 0.875rem; letter-spacing: 0.005em; line-height: 1.5; }

/* ---------- Translucent nav with scroll-edge effect (no hard divider) ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--chrome);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 3.5rem; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--text); font-weight: 650; letter-spacing: -0.01em; font-size: 0.975rem; }
.brand:hover { text-decoration: none; }
.brand__mark { width: 1.75rem; height: 1.75rem; flex: none; }
.nav__links { display: flex; align-items: center; gap: 0.25rem; list-style: none; margin: 0; padding: 0; }
.nav__links a:not(.btn) {
  display: block; padding: 0.4rem 0.75rem; border-radius: 999px;
  color: var(--text-2); font-size: 0.875rem; font-weight: 500; letter-spacing: 0.005em;
}
.nav__links a:not(.btn):hover { color: var(--text); background: var(--accent-soft); text-decoration: none; }
@media (max-width: 47.99em) {
  .nav__links li:not(:last-child) { display: none; }
}

/* ---------- Buttons: feedback lives on the press, instantly ---------- */
.btn {
  -webkit-appearance: none; appearance: none;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 2.75rem; padding: 0 1.35rem;
  border: 0; border-radius: 999px; cursor: pointer;
  font: inherit; font-size: 1rem; font-weight: 600; letter-spacing: -0.005em;
  background: var(--accent); color: #fff;
  transition: transform 100ms ease-out, background-color 150ms ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.btn:hover { background: var(--accent-strong); text-decoration: none; }
.btn:active { transform: scale(0.97); }
.btn--ghost { background: transparent; color: var(--accent); box-shadow: inset 0 0 0 1px var(--line); }
.btn--ghost:hover { background: var(--accent-soft); }
.btn--sm { min-height: 2.125rem; padding: 0 1rem; font-size: 0.875rem; }
.btn[disabled] { opacity: 0.6; cursor: progress; }
@media (prefers-color-scheme: dark) { .btn:not(.btn--ghost) { color: #0b0b0d; } }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(4rem, 12vw, 8.5rem) 0 clamp(3.5rem, 8vw, 6rem); overflow: hidden; }
.hero__glow {
  position: absolute; inset: -20% -10% auto; height: 70%;
  background:
    radial-gradient(40% 60% at 25% 40%, rgba(43, 89, 195, 0.16), transparent 70%),
    radial-gradient(35% 55% at 75% 30%, rgba(110, 155, 255, 0.14), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}
.hero .wrap { position: relative; }
.hero__copy { max-width: 46rem; }
.hero .lead { margin-top: 1.5rem; max-width: 38rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.25rem; }
.hero__pills { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 3rem 0 0; padding: 0; list-style: none; }
.hero__pills li {
  font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.01em; color: var(--text-2);
  padding: 0.4rem 0.85rem; border-radius: 999px; background: var(--bg-elevated); box-shadow: inset 0 0 0 1px var(--line);
}

/* ---------- Sections ---------- */
.section { padding: clamp(4rem, 10vw, 7rem) 0; }
.section--sunken { background: var(--bg-sunken); }
.section__head { max-width: 42rem; margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }
.section__head .lead { margin-top: 1rem; }

/* Services grid */
.services { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); }
.card {
  position: relative;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line);
  transition: transform 400ms var(--ease-out), box-shadow 400ms var(--ease-out);
}
@media (hover: hover) {
  .card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg), inset 0 0 0 1px var(--line); }
}
.card--feature { grid-column: 1 / -1; display: grid; gap: 1.5rem 3rem; grid-template-columns: 1fr; }
@media (min-width: 56em) { .card--feature { grid-template-columns: 1.1fr 1fr; align-items: center; padding: 2.5rem; } }
.card__icon {
  width: 2.75rem; height: 2.75rem; border-radius: 0.8rem;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  margin-bottom: 1.25rem;
}
.card__icon svg { width: 1.375rem; height: 1.375rem; }
.card p { color: var(--text-2); margin: 0.6rem 0 0; font-size: 1rem; line-height: 1.55; }
.card ul { margin: 1.1rem 0 0; padding: 0; list-style: none; display: grid; gap: 0.45rem; }
.card li { position: relative; padding-left: 1.4rem; font-size: 0.9375rem; color: var(--text-2); line-height: 1.45; }
.card li::before {
  content: ""; position: absolute; left: 0.15rem; top: 0.45em;
  width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--accent); opacity: 0.55;
}
.card--feature .h3 { font-size: clamp(1.5rem, 2.6vw, 1.875rem); letter-spacing: -0.022em; line-height: 1.15; }

/* SaaS preview panel (decorative) */
.preview {
  border-radius: var(--radius-sm);
  background: var(--bg-sunken);
  box-shadow: inset 0 0 0 1px var(--line);
  padding: 1rem;
  font-size: 0.8125rem;
}
.preview__bar { display: flex; gap: 0.35rem; margin-bottom: 0.9rem; }
.preview__bar span { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: var(--line); }
.preview__row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.7rem 0.85rem; border-radius: 0.6rem; background: var(--bg-elevated); box-shadow: var(--shadow-sm); }
.preview__row + .preview__row { margin-top: 0.5rem; }
.preview__label { color: var(--text-2); font-weight: 500; }
.preview__meter { flex: 1; max-width: 9rem; height: 0.4rem; border-radius: 999px; background: var(--accent-soft); overflow: hidden; }
.preview__meter i { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.tag { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.01em; padding: 0.2rem 0.55rem; border-radius: 999px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }

/* Approach / process */
.steps { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); counter-reset: step; list-style: none; margin: 0; padding: 0; }
.step { padding: 1.5rem 0 0; border-top: 1px solid var(--line); counter-increment: step; }
.step::before {
  content: counter(step, decimal-leading-zero);
  display: block; font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.04em; color: var(--accent); margin-bottom: 0.75rem;
  font-variant-numeric: tabular-nums;
}
.step p { margin: 0.5rem 0 0; color: var(--text-2); font-size: 0.975rem; }

/* Principles */
.principles { display: grid; gap: 2.5rem 3rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); }
.principle .h3 { font-size: 1.125rem; }
.principle p { margin: 0.5rem 0 0; color: var(--text-2); font-size: 0.975rem; }

/* ---------- Contact ---------- */
.contact { display: grid; gap: 3rem; grid-template-columns: 1fr; }
@media (min-width: 56em) { .contact { grid-template-columns: 0.85fr 1.15fr; align-items: start; } }
.contact__aside dl { margin: 2rem 0 0; display: grid; gap: 1.25rem; }
.contact__aside dt { font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.01em; color: var(--text-3); }
.contact__aside dd { margin: 0.2rem 0 0; }

.form {
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  box-shadow: var(--shadow-lg), inset 0 0 0 1px var(--line);
}
.form__grid { display: grid; gap: 1.1rem; grid-template-columns: 1fr; }
@media (min-width: 36em) { .form__grid { grid-template-columns: 1fr 1fr; } .field--full { grid-column: 1 / -1; } }
.field { display: grid; gap: 0.4rem; }
.field label { font-size: 0.875rem; font-weight: 600; letter-spacing: 0.005em; }
.field label .opt { font-weight: 400; color: var(--text-3); }
.field input, .field select, .field textarea {
  -webkit-appearance: none; appearance: none;
  width: 100%;
  font: inherit; font-size: 1rem; color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  padding: 0.75rem 0.9rem;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8' fill='none' stroke='%23888' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 0.9rem center; background-size: 0.7rem;
  padding-right: 2.25rem;
}
.field textarea { min-height: 9rem; resize: vertical; line-height: 1.5; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft);
}
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea { border-color: var(--err); }
.field__error { font-size: 0.8125rem; color: var(--err); min-height: 0; }
.field__error:empty { display: none; }
.consent { display: flex; gap: 0.7rem; align-items: flex-start; font-size: 0.875rem; color: var(--text-2); line-height: 1.45; }
.consent input { -webkit-appearance: auto; appearance: auto; width: 1.1rem; height: 1.1rem; margin: 0.1rem 0 0; flex: none; accent-color: var(--accent); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1.5rem; }
.form__status { font-size: 0.9375rem; font-weight: 500; margin: 1rem 0 0; }
.form__status:empty { display: none; }
.form__status.is-ok { color: var(--ok); }
.form__status.is-err { color: var(--err); }
.spinner { width: 1rem; height: 1rem; border-radius: 50%; border: 2px solid currentColor; border-right-color: transparent; animation: spin 700ms linear infinite; display: none; }
.btn.is-loading .spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Footer ---------- */
.footer { padding: 3rem 0 2.5rem; border-top: 1px solid var(--line); font-size: 0.875rem; color: var(--text-3); }
.footer__grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.5rem 3rem; }
.footer__links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; list-style: none; margin: 0; padding: 0; }
.footer__links a { color: var(--text-2); }
.footer p { margin: 0.25rem 0 0; }

/* ---------- Legal pages ---------- */
.legal { padding: clamp(3rem, 8vw, 5rem) 0 5rem; }
.legal .wrap { max-width: 46rem; }
.legal h1 { margin-bottom: 0.5rem; }
.legal h2 { font-size: 1.375rem; letter-spacing: -0.018em; line-height: 1.25; margin: 2.75rem 0 0.75rem; }
.legal h3 { font-size: 1.0625rem; letter-spacing: -0.01em; margin: 1.5rem 0 0.5rem; }
.legal p, .legal li { color: var(--text-2); line-height: 1.65; }
.legal ul { padding-left: 1.25rem; }
.legal table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9375rem; }
.legal th, .legal td { text-align: left; vertical-align: top; padding: 0.7rem 0.75rem 0.7rem 0; border-bottom: 1px solid var(--line); }
.legal th { width: 38%; font-weight: 600; color: var(--text); }
.legal td { color: var(--text-2); }
.legal .toc { background: var(--bg-sunken); border-radius: var(--radius-sm); padding: 1rem 1.25rem; margin: 2rem 0 0; }
.legal .toc ol { margin: 0.25rem 0 0; padding-left: 1.25rem; }
.placeholder { background: rgba(255, 196, 0, 0.18); border-radius: 4px; padding: 0 0.25em; color: var(--text); }

/* ---------- Reveal-on-scroll: rise + materialize, no overshoot ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms var(--ease-out), transform 700ms var(--ease-out); transition-delay: var(--d, 0ms); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- Accessibility preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transform: none !important; transition: opacity 200ms ease; }
  .card, .card:hover { transform: none !important; transition: box-shadow 200ms ease; }
  .btn:active { transform: none; }
  .spinner { animation-duration: 1.6s; }
}
@media (prefers-reduced-transparency: reduce) {
  .nav { background: var(--bg); -webkit-backdrop-filter: none; backdrop-filter: none; border-bottom-color: var(--line); }
  .hero__glow { display: none; }
}
@media (prefers-contrast: more) {
  :root { --line: rgba(0, 0, 0, 0.35); --text-2: #2a2a2d; --text-3: #3d3d40; }
  .nav { background: var(--bg); backdrop-filter: none; -webkit-backdrop-filter: none; border-bottom: 1px solid var(--text); }
}
@media (prefers-contrast: more) and (prefers-color-scheme: dark) {
  :root { --line: rgba(255, 255, 255, 0.4); --text-2: #e5e5ea; --text-3: #d1d1d6; }
}

/* ---------- Pricing note & footer identity ---------- */
.note {
  display: flex; gap: 1rem; align-items: flex-start;
  margin-top: 1.5rem; padding: 1.25rem 1.5rem;
  background: var(--bg-elevated); border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px var(--line);
}
.note svg { width: 1.375rem; height: 1.375rem; flex: none; color: var(--accent); margin-top: 0.1rem; }
.note p { margin: 0; color: var(--text-2); font-size: 0.975rem; line-height: 1.55; }
.footer__id a { color: var(--text-2); }
.footer__links { align-content: flex-start; }
.legal ol { color: var(--text-2); line-height: 1.65; }
@media (min-width: 48em) { .services--pricing { grid-template-columns: 1fr 1fr; } }