/* ==========================================================================
   MOSS — Marketing site
   Tokens from ios/MOSS/DesignSystem/MossColors.swift + MossType + MossButtons.
   Ink and paper do the work. Moss is the one chromatic accent (never a button
   fill). Ember is signal only. Light is the default appearance.
   ========================================================================== */

:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 1rem + 5.5vw, 6.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* MossColors.swift raw swatches */
  --moss-ink: #0C0D0C;
  --moss-deep: #2F4A3C;
  --moss-sage: #9DB8A4;
  --moss-glow: #D7E4C8;
  --warm-paper: #F5F5F4;
  --ember: #C97B4A;
  --moss-dusk: #1A221C;
  --moss-sage-crisp: #C5D6C7;
  --moss-surface-light: #F4F4F4;

  /* Semantic — light default (MossColors mossBackground / mossText* / mossAccent) */
  --color-bg: var(--warm-paper);
  --color-surface: #ffffff;
  --color-surface-2: var(--moss-surface-light);
  --color-text: var(--moss-ink);
  --color-text-muted: color-mix(in srgb, var(--moss-ink) 55%, transparent);
  --color-text-faint: color-mix(in srgb, var(--moss-ink) 40%, transparent);
  --color-text-inverse: #ffffff;
  --color-accent: var(--moss-deep);
  --color-border: color-mix(in srgb, var(--moss-ink) 12%, transparent);
  --color-hairline: color-mix(in srgb, var(--moss-ink) 10%, transparent);
  --color-header: color-mix(in srgb, var(--warm-paper) 86%, transparent);

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --transition-interactive: 220ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px color-mix(in srgb, var(--moss-ink) 8%, transparent);
  --shadow-md: 0 8px 24px color-mix(in srgb, var(--moss-ink) 10%, transparent);
  --shadow-lg: 0 24px 64px color-mix(in srgb, var(--moss-ink) 12%, transparent);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1180px;

  /* MossType: SF Pro throughout. Titles/headings use the rounded design. */
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  --font-display: "SF Pro Rounded", ui-rounded, "SF Pro Display", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: var(--moss-ink);
    --color-surface: var(--moss-dusk);
    --color-surface-2: var(--moss-dusk);
    --color-text: var(--warm-paper);
    --color-text-muted: var(--moss-sage-crisp);
    --color-text-faint: color-mix(in srgb, var(--warm-paper) 45%, transparent);
    --color-text-inverse: var(--moss-ink);
    --color-accent: var(--moss-glow);
    --color-border: color-mix(in srgb, #ffffff 12%, transparent);
    --color-hairline: color-mix(in srgb, var(--moss-sage) 25%, transparent);
    --color-header: color-mix(in srgb, var(--moss-ink) 86%, transparent);
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.35);
    --shadow-md: 0 8px 24px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 24px 64px rgb(0 0 0 / 0.5);
  }

  .btn-primary {
    background: var(--warm-paper);
    color: var(--moss-ink);
  }
  .btn-primary:hover { background: #ffffff; }

  .btn-ghost {
    background: color-mix(in srgb, #ffffff 8%, transparent);
  }
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
  color-scheme: light dark;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, video, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.12;
  color: var(--color-text);
  font-weight: 600;
}
p, li { text-wrap: pretty; max-width: 62ch; }

::selection { background: color-mix(in srgb, var(--moss-deep) 22%, transparent); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--moss-deep); outline-offset: 3px; border-radius: var(--radius-sm); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button { cursor: pointer; background: none; border: none; }

a, button, [role='button'], input {
  transition: color var(--transition-interactive), background var(--transition-interactive),
    border-color var(--transition-interactive), box-shadow var(--transition-interactive),
    opacity var(--transition-interactive), transform var(--transition-interactive);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--moss-ink); color: var(--warm-paper);
  padding: var(--space-2) var(--space-4); z-index: 100; border-radius: var(--radius-sm);
}
.skip-link:focus { left: var(--space-4); top: var(--space-4); }

.wrap {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-10));
}

.eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--moss-deep);
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.eyebrow.center { text-align: center; }
.center { text-align: center; margin-inline: auto; }

.section-title { font-size: var(--text-xl); max-width: 24ch; }
.section-lede { color: var(--color-text-muted); font-size: var(--text-base); max-width: 52ch; margin-top: var(--space-4); }

/* ---------------------------------------------------------------------- */
/* Buttons — MossPrimary / MossOutline: ink fill, never moss, never ember  */
/* ---------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 600; padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full); white-space: nowrap; text-decoration: none;
  min-height: 52px;
}
.btn-primary {
  background: var(--moss-ink);
  color: var(--warm-paper);
}
.btn-primary:hover { opacity: 0.88; }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost {
  color: var(--color-text);
  border: 1px solid color-mix(in srgb, var(--moss-ink) 85%, transparent);
  background: var(--color-surface);
}
.btn-ghost:hover { border-color: var(--moss-ink); }
.btn-sm { padding: var(--space-2) var(--space-5); font-size: var(--text-xs); min-height: 40px; }
.btn-block { width: 100%; }

/* ---------------------------------------------------------------------- */
/* Header                                                                  */
/* ---------------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--color-header);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.site-header.is-scrolled { border-color: var(--color-hairline); box-shadow: var(--shadow-sm); }

.header-inner { display: flex; align-items: center; justify-content: space-between; padding-block: var(--space-4); }

.brand { display: inline-flex; align-items: center; gap: var(--space-2); text-decoration: none; }
.brand-mark { border-radius: var(--radius-full); }
.brand-word {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.28em;
  color: var(--color-text);
  font-weight: 600;
  text-indent: 0.28em;
}

.site-nav { display: none; gap: var(--space-8); }
.site-nav a { color: var(--color-text-muted); font-size: var(--text-sm); text-decoration: none; }
.site-nav a:hover { color: var(--color-text); }

@media (min-width: 860px) {
  .site-nav { display: flex; }
}

/* ---------------------------------------------------------------------- */
/* Hero                                                                    */
/* ---------------------------------------------------------------------- */
.hero { padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 6vw, var(--space-20)); }
.hero-inner { display: grid; gap: var(--space-16); align-items: center; }

.hero h1 {
  font-size: var(--text-hero);
  margin-bottom: var(--space-6);
}

.hero .lede { color: var(--color-text-muted); font-size: var(--text-lg); max-width: 46ch; margin-bottom: var(--space-8); }

.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-5); }
.hero-note { font-size: var(--text-xs); color: var(--color-text-faint); }

.hero-orb { justify-self: center; width: min(100%, 480px); position: relative; }
.hero-orb::after {
  content: ''; position: absolute; inset: -6%; border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--moss-deep) 28%, transparent), transparent 68%);
  filter: blur(8px); z-index: -1;
}
.orb-media {
  width: 100%; aspect-ratio: 1/1; border-radius: 50%; object-fit: cover;
  background: var(--moss-ink);
}

@media (min-width: 920px) {
  .hero-inner { grid-template-columns: 1.1fr 1fr; }
  .hero-orb { justify-self: end; }
}

/* ---------------------------------------------------------------------- */
/* Philosophy                                                              */
/* ---------------------------------------------------------------------- */
.philosophy {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface);
  border-top: 1px solid var(--color-hairline);
  border-bottom: 1px solid var(--color-hairline);
}
.philosophy-grid { display: grid; gap: var(--space-12); align-items: center; }
.philosophy h2 { font-size: var(--text-xl); margin-bottom: var(--space-6); }
.philosophy p { color: var(--color-text-muted); margin-bottom: var(--space-4); }
.philosophy p:last-child { margin-bottom: 0; }

.philosophy-visual { display: flex; align-items: center; justify-content: center; order: -1; }
.philosophy-ring {
  width: min(60vw, 220px); aspect-ratio: 1/1; border-radius: 50%;
  border: 1px solid var(--color-border);
  background: radial-gradient(circle at 40% 35%, color-mix(in srgb, var(--moss-sage) 28%, transparent), transparent 70%);
  position: relative;
}
.philosophy-ring::before {
  content: ''; position: absolute; inset: 18%; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--moss-deep) 28%, transparent);
}

@media (min-width: 860px) {
  .philosophy-grid { grid-template-columns: 0.8fr 1.2fr; }
  .philosophy-visual { order: 0; }
}

/* ---------------------------------------------------------------------- */
/* Modes                                                                   */
/* ---------------------------------------------------------------------- */
.modes { padding-block: clamp(var(--space-20), 10vw, var(--space-32)); }
.modes .section-title { margin-inline: auto; }

.modes-layout { display: grid; gap: var(--space-16); margin-top: var(--space-16); }

.modes-orb-stage { position: relative; }
.modes-orb-frame {
  position: sticky; top: 18vh;
  width: min(100%, 420px); aspect-ratio: 1/1; margin-inline: auto;
  border-radius: 50%; overflow: hidden;
  background: var(--moss-ink);
}
.modes-orb-img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity 520ms ease;
}
.modes-orb-img.is-active { opacity: 1; }
.modes-orb-img.is-dimmed.is-active { opacity: 0.42; filter: grayscale(0.35); }

.modes-chapters { display: flex; flex-direction: column; gap: clamp(var(--space-12), 10vh, 22vh); padding-top: 4vh; padding-bottom: 4vh; }

.mode-chapter { max-width: 46ch; opacity: 0.4; transition: opacity 420ms ease; }
.mode-chapter.is-active { opacity: 1; }
.mode-chapter h3 { font-size: var(--text-xl); margin-bottom: var(--space-3); }
.mode-chapter p { color: var(--color-text-muted); }

.mode-tag {
  display: inline-flex; align-items: center; font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full); margin-bottom: var(--space-4);
}
.mode-tag--live {
  background: color-mix(in srgb, var(--moss-glow) 70%, var(--moss-sage));
  color: var(--moss-deep);
}
.mode-tag--soon {
  background: color-mix(in srgb, var(--moss-ink) 8%, transparent);
  color: var(--color-text-muted);
}

@media (min-width: 900px) {
  .modes-layout { grid-template-columns: 1fr 1fr; }
}

@media (prefers-color-scheme: dark) {
  .mode-tag--live {
    background: color-mix(in srgb, var(--moss-glow) 16%, transparent);
    color: var(--moss-glow);
  }
  .eyebrow { color: var(--moss-glow); }
}

/* ---------------------------------------------------------------------- */
/* Four laws                                                               */
/* ---------------------------------------------------------------------- */
.laws {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface);
  border-top: 1px solid var(--color-hairline);
  border-bottom: 1px solid var(--color-hairline);
}
.laws .section-lede { margin-inline: auto; }

.laws-grid { display: grid; gap: var(--space-6); margin-top: var(--space-12); }
.law-card {
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}
.law-number { font-family: var(--font-display); color: var(--moss-deep); font-size: var(--text-lg); font-weight: 600; }
.law-card h3 { font-size: var(--text-lg); margin: var(--space-3) 0 var(--space-2); }
.law-card p { color: var(--color-text-muted); font-size: var(--text-sm); }

@media (min-width: 720px) {
  .laws-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-color-scheme: dark) {
  .law-number { color: var(--moss-glow); }
}

/* ---------------------------------------------------------------------- */
/* Pricing                                                                 */
/* ---------------------------------------------------------------------- */
.pricing { padding-block: clamp(var(--space-20), 10vw, var(--space-32)); }
.pricing-grid { display: grid; gap: var(--space-12); align-items: center; }
.pricing h2 { font-size: var(--text-xl); margin-bottom: var(--space-5); }
.pricing-copy > p { color: var(--color-text-muted); margin-bottom: var(--space-6); }
.pricing-notes { display: flex; flex-direction: column; gap: var(--space-3); }
.pricing-notes li { color: var(--color-text-muted); font-size: var(--text-sm); padding-left: var(--space-6); position: relative; }
.pricing-notes li::before { content: ''; position: absolute; left: 0; top: 0.45em; width: 0.45em; height: 0.45em; border-radius: 50%; background: var(--moss-deep); }

.pricing-card {
  padding: var(--space-10); border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg); text-align: center;
}
.pricing-plan {
  font-family: var(--font-display);
  color: var(--moss-deep);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  letter-spacing: 0.28em;
  font-weight: 600;
}
.pricing-amount { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--color-text); margin-bottom: var(--space-1); font-variant-numeric: tabular-nums; }
.pricing-period { font-size: var(--text-sm); color: var(--color-text-muted); font-family: var(--font-body); font-weight: 500; }
.pricing-alt { color: var(--color-text-faint); font-size: var(--text-sm); margin-bottom: var(--space-8); }

@media (min-width: 860px) {
  .pricing-grid { grid-template-columns: 1.1fr 0.9fr; }
}

@media (prefers-color-scheme: dark) {
  .pricing-plan { color: var(--moss-glow); }
  .pricing-notes li::before { background: var(--moss-glow); }
}

/* ---------------------------------------------------------------------- */
/* Waitlist                                                                */
/* ---------------------------------------------------------------------- */
.waitlist {
  padding-block: clamp(var(--space-20), 10vw, var(--space-32));
  background: var(--color-surface);
  border-top: 1px solid var(--color-hairline);
  text-align: center;
}
.waitlist-inner { max-width: 560px; margin-inline: auto; display: flex; flex-direction: column; align-items: center; }
.waitlist-orb { margin-bottom: var(--space-6); border-radius: 50%; background: var(--moss-ink); }
.waitlist h2 { font-size: var(--text-xl); margin-bottom: var(--space-4); }
.waitlist-sub { color: var(--color-text-muted); margin-bottom: var(--space-8); }

.waitlist-form { display: flex; gap: var(--space-3); width: 100%; flex-wrap: wrap; justify-content: center; }
.waitlist-form input {
  flex: 1 1 240px; min-width: 0; padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full); border: 1px solid var(--color-border);
  background: var(--color-bg); color: var(--color-text);
  min-height: 52px;
}
.waitlist-form input::placeholder { color: var(--color-text-faint); }
.waitlist-form input:focus { border-color: var(--moss-deep); outline: none; }
.waitlist-status { margin-top: var(--space-4); font-size: var(--text-sm); color: var(--moss-deep); min-height: 1.4em; }
.waitlist-status.is-error { color: var(--ember); }

/* ---------------------------------------------------------------------- */
/* Footer                                                                  */
/* ---------------------------------------------------------------------- */
.site-footer { padding-block: var(--space-12); border-top: 1px solid var(--color-hairline); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); text-align: center; }
.footer-tagline { font-family: var(--font-body); color: var(--color-text-muted); font-size: var(--text-sm); }
.footer-meta { font-size: var(--text-xs); color: var(--color-text-faint); display: flex; gap: var(--space-2); align-items: center; }
.footer-meta a { color: var(--color-text-faint); text-decoration: underline; text-decoration-color: var(--color-hairline); }
.footer-meta a:hover { color: var(--moss-deep); }

@media (min-width: 720px) {
  .footer-inner { flex-direction: row; justify-content: space-between; text-align: left; }
}

@media (prefers-color-scheme: dark) {
  .footer-meta a:hover { color: var(--moss-glow); }
  .waitlist-status { color: var(--moss-glow); }
  .waitlist-form input:focus { border-color: var(--moss-glow); }
}