/* Entropia marketing site — Clay design system.
   Tokens mirror src/Entropia.Mobile/Resources/Styles/Colors.xaml one-for-one so the
   site and the app cannot drift. Change a value there and here in the same commit. */

:root {
  --canvas:        #fffaf0;
  --canvas-soft:   #faf5e8;
  --canvas-card:   #f5f0e0;
  --canvas-strong: #ebe6d6;
  --ink:           #0a0a0a;
  --ink-soft:      #1f1f1f;
  --muted:         #6a6a6a;
  --hairline:      #e5e5e5;
  --teal:          #1a3a3a;
  --coral:         #ff6b5a;
  --mint:          #a4d4c5;
  --lavender:      #b8a4ed;
  --peach:         #ffb084;
  --ochre:         #e8b94a;
  --pink:          #ff4d8b;

  --radius:      16px;
  --radius-pill: 999px;
  --lift:        0 2px 8px rgba(10, 10, 10, .06);
  --wrap:        1120px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- Primitives ---------------------------------------------------------- */

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.section         { padding: 96px 0; }
.section--soft   { background: var(--canvas-soft); }
.section--teal   { background: var(--teal); color: var(--canvas); }
.section--teal .lede { color: rgba(255, 250, 240, .78); }

.display {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -.02em;
  font-weight: 700;
  margin: 0 0 20px;
}
h2 { font-size: clamp(28px, 4vw, 40px); line-height: 1.15; letter-spacing: -.01em; margin: 0 0 16px; }
h3 { font-size: 20px; line-height: 1.3; margin: 0 0 8px; }

.eyebrow {
  font-size: 13px; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 12px;
}
.lede { font-size: 19px; color: var(--muted); margin: 0 0 32px; max-width: 60ch; }

/* ---- Buttons ------------------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-pill); border: 1px solid transparent;
  font-size: 16px; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: transform .12s ease, background-color .12s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--coral); color: var(--ink); }
.btn--primary:hover { background: #ff5745; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--canvas); }
.btn[aria-disabled="true"] { opacity: .45; pointer-events: none; }

/* ---- Cards and grids ----------------------------------------------------- */

.card { border-radius: var(--radius); padding: 32px; background: var(--canvas-card); color: var(--ink); }
.card--mint { background: var(--mint); }
.card--lavender { background: var(--lavender); }
.card--peach { background: var(--peach); }
.card--ochre { background: var(--ochre); }
.card--pink { background: var(--pink); }
.card p { margin: 0; color: rgba(10, 10, 10, .72); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-3 { grid-template-columns: 1fr; } }

/* ---- Accessibility ------------------------------------------------------- */

a { color: inherit; }
:focus-visible { outline: 3px solid var(--pink); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--ink); color: var(--canvas); padding: 12px 20px; text-decoration: none;
}
.skip-link:focus { left: 8px; top: 8px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

/* ---- Nav ----------------------------------------------------------------- */

.nav { border-bottom: 1px solid var(--hairline); background: var(--canvas); position: sticky; top: 0; z-index: 50; }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav__brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 19px; }
.nav__brand img { width: 32px; height: 32px; object-fit: contain; }
.nav__links { display: flex; align-items: center; gap: 28px; margin: 0; padding: 0; list-style: none; }
.nav__links a { text-decoration: none; font-size: 16px; color: var(--ink); }
.nav__links a:hover { color: var(--muted); }
.nav__toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; font-size: 22px; color: var(--ink); }

@media (max-width: 820px) {
  .nav__toggle { display: block; }
  .nav__links {
    display: none; position: absolute; left: 0; right: 0; top: 72px;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 8px 24px 20px;
  }
  .nav__links[data-open="true"] { display: flex; }
  .nav__links li { width: 100%; padding: 12px 0; }
}

/* Signed-in nav: the admin menu is a <details>, not a scripted dropdown, so it keeps
   working with marketing.js blocked. */

.nav__menu { position: relative; }
.nav__menu > summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
  font-size: 16px; color: var(--ink);
}
.nav__menu > summary::-webkit-details-marker { display: none; }
.nav__menu > summary::after { content: "\25BE"; font-size: 11px; color: var(--muted); }
.nav__menu[open] > summary::after { content: "\25B4"; }
.nav__menu > summary:hover { color: var(--muted); }
.nav__menu-panel {
  position: absolute; top: calc(100% + 14px); left: 0; z-index: 60;
  min-width: 200px; margin: 0; padding: 8px 0; list-style: none;
  background: var(--canvas); border: 1px solid var(--hairline);
  border-radius: var(--radius); box-shadow: 0 8px 24px rgba(0, 0, 0, .10);
}
.nav__menu-panel li { padding: 0; }
.nav__menu-panel a { display: block; padding: 10px 18px; }
.nav__menu-panel a:hover { background: var(--canvas-strong); color: var(--ink); }
.nav__who { font-size: 16px; color: var(--muted); }

@media (max-width: 820px) {
  /* Inside the collapsed menu there is nowhere to float a panel, so it becomes an
     indented sub-list. These override the generic `.nav__links li` rules above. */
  .nav__menu-panel {
    position: static; min-width: 0; margin-top: 6px; padding: 0;
    background: transparent; border: 0; border-radius: 0; box-shadow: none;
  }
  .nav__menu-panel li { padding: 8px 0; }
  .nav__menu-panel a { padding: 0 0 0 16px; }
}

/* ---- Footer -------------------------------------------------------------- */

.footer { background: var(--canvas-strong); padding: 64px 0 32px; margin-top: 0; }
.footer__cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
@media (max-width: 820px) { .footer__cols { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .footer__cols { grid-template-columns: 1fr; } }
.footer h4 { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 10px; }
.footer a { text-decoration: none; font-size: 15px; }
.footer a:hover { text-decoration: underline; }
.footer__base {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--hairline);
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between;
  font-size: 14px; color: var(--muted);
}
.footer__lang a[aria-current="true"] { font-weight: 700; color: var(--ink); }

/* ---- Hero ---------------------------------------------------------------- */

.hero { padding: 96px 0 80px; }
.hero__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .hero__grid { grid-template-columns: 1fr; gap: 40px; } }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* Placeholder device frame. Sized to a 9:19.5 phone so swapping in a real
   screenshot at 900x1950 needs no layout change — see Task 11. */
.device {
  width: 100%; max-width: 300px; aspect-ratio: 9 / 19.5; margin: 0 auto;
  border-radius: 40px; background: var(--canvas-card);
  border: 10px solid var(--ink); box-shadow: var(--lift);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.device img { width: 100%; height: 100%; object-fit: cover; }
.device__empty { color: var(--muted); font-size: 13px; text-align: center; padding: 0 20px; }

/* ---- Steps --------------------------------------------------------------- */

.step__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--radius-pill);
  background: var(--ink); color: var(--canvas); font-weight: 700; margin-bottom: 16px;
}

/* ---- App band ------------------------------------------------------------ */

.app__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .app__grid { grid-template-columns: 1fr; gap: 32px; } }

.badges { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 32px; }
.badge-store {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; border-radius: 12px;
  border: 1px solid rgba(255, 250, 240, .35); color: var(--canvas);
  font-size: 15px; text-decoration: none; opacity: .55; cursor: not-allowed;
}
.badge-store small { display: block; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }

.notify { display: flex; flex-wrap: wrap; gap: 12px; max-width: 480px; }
.notify input[type="email"] {
  flex: 1 1 240px; padding: 14px 18px; font-size: 16px; font-family: inherit;
  border-radius: var(--radius-pill); border: 1px solid rgba(255, 250, 240, .35);
  background: rgba(255, 250, 240, .08); color: var(--canvas);
}
.notify input[type="email"]::placeholder { color: rgba(255, 250, 240, .5); }
.notify .btn--primary { flex: 0 0 auto; }

.form-note { font-size: 15px; margin-top: 12px; }
.form-note--error { color: #ffb4a8; }
.form-note--ok { color: var(--mint); }

/* ---- Long-form pages ----------------------------------------------------- */

.prose { max-width: 68ch; }
.prose h2 { margin-top: 48px; }
.prose h3 { margin-top: 32px; font-size: 18px; }
.prose p { margin: 0 0 18px; }
.prose ul { margin: 0 0 18px; padding-left: 22px; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--ink); text-underline-offset: 3px; }

.factbox {
  background: var(--canvas-card); border-radius: var(--radius);
  padding: 28px 32px; margin: 32px 0; max-width: 68ch;
}
.factbox dl { display: grid; grid-template-columns: 180px 1fr; gap: 12px 20px; margin: 0; }
@media (max-width: 600px) { .factbox dl { grid-template-columns: 1fr; gap: 4px 0; } }
.factbox dt { color: var(--muted); font-size: 15px; }
.factbox dd { margin: 0; }

.page-head { padding: 72px 0 24px; }

/* Draft banner for the Privacy Policy. Deliberately loud. */
.draft-banner {
  background: var(--ochre); color: var(--ink); border-radius: var(--radius);
  padding: 16px 20px; margin: 0 0 32px; max-width: 68ch; font-size: 15px;
}

/* Markdown-rendered bodies (Terms) reach .prose with elements the marketing pages
   never use themselves. */
.prose blockquote {
  margin: 0 0 18px; padding: 12px 20px;
  border-left: 3px solid var(--hairline); color: var(--muted);
}
.prose h2:first-child { margin-top: 0; }

/* ---- Forms --------------------------------------------------------------- */

.form { max-width: 560px; }
.field { margin-bottom: 22px; }
.field label { display: block; font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.field input, .field textarea {
  width: 100%; padding: 14px 16px; font-size: 16px; font-family: inherit; line-height: 1.5;
  background: #fff; color: var(--ink);
  border: 1px solid var(--hairline); border-radius: 12px;
}
.field textarea { min-height: 170px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--ink); }
.field--invalid input, .field--invalid textarea { border-color: var(--coral); }
.field__error { color: #c0392b; font-size: 14px; margin: 8px 0 0; }

.alert { border-radius: var(--radius); padding: 16px 20px; margin-bottom: 28px; max-width: 560px; }
.alert--ok { background: var(--mint); color: var(--ink); }
.alert--error { background: #ffe2dd; color: #7a1c10; }