/* ten studio — landing page
 * Tokens locked in os/memory/library/apps/ten/DESIGN.md
 * Spec at os/memory/library/apps/ten/specs/landing-page-spec.md
 */

:root {
  --bg: #100E0A;
  --fg: #EEE6D3;
  --mute: #948A77;
  --rule: #221D17;

  --font-wordmark: 'Big Caslon', 'Big Caslon CC', 'BigCaslon-Medium', 'Libre Caslon Display', 'Libre Caslon Text', Georgia, serif;
  --font-body: 'Crimson Pro', Georgia, serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --col-max: 640px;
  --pad-x: 56px;
  --pad-y: 80px;

  --gap-nav-wordmark: 56px;
  --gap-wordmark-prose: 40px;
  --gap-section: 32px;
  --gap-label-prose: 24px;
  --gap-para: 20px;
  --gap-page-bottom: 96px;

  --transition: 120ms cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 720px) {
  :root {
    --pad-x: 24px;
    --pad-y: 48px;
    --gap-nav-wordmark: 32px;
    --gap-wordmark-prose: 28px;
    --gap-section: 24px;
    --gap-page-bottom: 64px;
  }
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* page container */
.page {
  min-height: 100vh;
  padding: var(--pad-y) var(--pad-x);
  display: flex;
  flex-direction: column;
}

/* top-right nav */
.nav {
  display: flex;
  justify-content: flex-end;
  gap: 1.75rem;
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--mute);
}
@media (max-width: 720px) {
  .nav { gap: 1.125rem; font-size: 0.75rem; }
}
.nav a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
  padding: 0.5rem 0;
}
.nav a:hover,
.nav a:focus-visible { color: var(--fg); }

/* main reading column */
main {
  max-width: var(--col-max);
  width: 100%;
  margin: 0 auto;
  flex: 1;
}

/* wordmark */
.wordmark {
  font-family: var(--font-wordmark);
  font-weight: 400;
  font-size: 3.25rem;      /* 52px */
  line-height: 1;
  letter-spacing: -0.01em;
  text-align: center;
  margin: var(--gap-nav-wordmark) 0 var(--gap-wordmark-prose);
  color: var(--fg);
}
@media (max-width: 720px) {
  .wordmark { font-size: 2.375rem; }  /* 38px */
}

/* section label */
.section-label {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 0.75rem;      /* 12px */
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
  margin: var(--gap-section) 0 var(--gap-label-prose);
  line-height: 1.2;
}

/* body prose */
p {
  font-family: var(--font-body);
  font-size: 1.25rem;      /* 20px */
  line-height: 1.65;
  letter-spacing: 0;
  margin: 0 0 var(--gap-para);
  color: var(--fg);
}
@media (max-width: 720px) {
  p { font-size: 1.15rem; }  /* 18.4px */
}

em, i { font-style: italic; }

/* lists */
ul {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--gap-para);
}
ul li {
  font-family: var(--font-body);
  font-size: 1.25rem;
  line-height: 1.65;
  color: var(--fg);
  position: relative;
  padding-left: 1.25rem;
  margin: 0 0 0.5rem;
}
ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--mute);
}
@media (max-width: 720px) {
  ul li { font-size: 1.15rem; }
}

/* inline links */
a {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-thickness var(--transition);
}
a:hover,
a:focus-visible {
  text-decoration-thickness: 2px;
}

/* CTA — same as inline link but slightly larger */
.cta {
  display: inline-block;
  font-size: 1.3rem;       /* 21px */
}
@media (max-width: 720px) {
  .cta { font-size: 1.19rem; }  /* 19px */
}

/* focus ring */
:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
  border-radius: 2px;
}

/* signature line */
.signature {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--mute);
  text-align: center;
  margin: var(--gap-page-bottom) 0 0;
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
}

/* /join — mailto layout (same column, same tokens) */
.join-link {
  font-family: var(--font-body);
  font-size: 1.22rem;
}

/* legal pages — "Last updated" line under wordmark */
.legal-meta {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute);
  text-align: center;
  margin: -16px 0 var(--gap-section);
}

/* footer — present on every page; required by store reviewers */
.footer {
  max-width: var(--col-max);
  width: 100%;
  margin: var(--gap-page-bottom) auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.75rem;
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--mute);
}
@media (max-width: 720px) {
  .footer { gap: 1.125rem; font-size: 0.75rem; }
}
.footer a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
  padding: 0.5rem 0;
}
.footer a:hover,
.footer a:focus-visible { color: var(--fg); }