/* ============================================================
   BrainFeed marketing site — pulls tokens from the Flutter app.
   Sources:
     lib/design/design_tokens.dart  (typography, spacing, radii)
     lib/design/archetype_theme.dart (archetype colors, glyphs, orbs)
   ============================================================ */

:root {
  /* Base */
  --bg: #060A12;
  --bg-deep: #03060C;

  /* Text alpha tiers (white-on-dark) */
  --text-1: #FFFFFF;
  --text-70: rgba(255, 255, 255, 0.70);
  --text-42: rgba(255, 255, 255, 0.42);
  --text-22: rgba(255, 255, 255, 0.22);

  /* Surface overlays */
  --surface-05: rgba(255, 255, 255, 0.05);
  --surface-09: rgba(255, 255, 255, 0.09);
  --surface-13: rgba(255, 255, 255, 0.13);
  --surface-17: rgba(255, 255, 255, 0.17);

  /* Archetype color: OpenLoop default. Cards override via [data-archetype]. */
  --accent: #5B8FFF;
  --accent-soft: rgba(91, 143, 255, 0.18);
  --accent-glow: rgba(91, 143, 255, 0.55);

  /* Entrance offsets (per-archetype overrides below) */
  --enter-x: 0;
  --enter-y: 12%;
  --enter-scale: 1;

  /* Spacing — mirrors design_tokens.dart */
  --card-pad-x: 26px;
  --card-pad-top: 62px;
  --card-pad-bot: 88px;
  --card-radius: 22px;
  --pill-radius: 100px;
  --callout-radius: 14px;

  /* Typography */
  --font-display: 'Syne', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'Space Mono', ui-monospace, monospace;

  /* Shadow */
  --shadow-card: 0 30px 80px rgba(0, 0, 0, 0.45);
}

/* Archetype palette swap */
[data-archetype='openloop'] {
  --accent: #5B8FFF;
  --accent-soft: rgba(91, 143, 255, 0.18);
  --accent-glow: rgba(91, 143, 255, 0.55);
  --orb-pos-x: 78%;
  --orb-pos-y: 14%;
  --enter-x: 0;
  --enter-y: 12%;
  --enter-scale: 1;
}
[data-archetype='contrarian'] {
  --accent: #FF5A7E;
  --accent-soft: rgba(255, 90, 126, 0.18);
  --accent-glow: rgba(255, 90, 126, 0.55);
  --orb-pos-x: 18%;
  --orb-pos-y: 82%;
  --enter-x: -10%;
  --enter-y: 2%;
  --enter-scale: 1;
}
[data-archetype='instantvalue'] {
  --accent: #00E8A2;
  --accent-soft: rgba(0, 232, 162, 0.18);
  --accent-glow: rgba(0, 232, 162, 0.45);
  --orb-pos-x: 50%;
  --orb-pos-y: 12%;
  --enter-x: 0;
  --enter-y: 4%;
  --enter-scale: 0.96;
}
[data-archetype='directaction'] {
  --accent: #FF7A2F;
  --accent-soft: rgba(255, 122, 47, 0.18);
  --accent-glow: rgba(255, 122, 47, 0.55);
  --orb-pos-x: 16%;
  --orb-pos-y: 12%;
  --enter-x: 12%;
  --enter-y: 0;
  --enter-scale: 1;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
}

body {
  min-width: 320px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  background: var(--text-1);
  color: var(--bg);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transform: translateY(-200%);
  z-index: 50;
  transition: transform 200ms ease;
}
.skip-link:focus {
  transform: translateY(0);
}

/* ============================================================
   Page grid shell
   ============================================================ */
.page {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  min-height: 100dvh;
}

/* Desktop: side copy on the left, feed centered ~430px */
@media (min-width: 1024px) {
  .page {
    grid-template-columns: 1fr min(430px, calc(100vw - 600px)) 1fr;
    column-gap: 0;
  }
  .feed {
    grid-column: 2;
  }
  .side-copy {
    grid-column: 1;
  }
}

/* ============================================================
   Side copy column (desktop only)
   ============================================================ */
.side-copy {
  display: none;
}

@media (min-width: 1024px) {
  .side-copy {
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding: 56px 56px 56px max(56px, calc((100vw - 1280px) / 2 + 56px));
    position: sticky;
    top: 0;
    align-self: start;
    height: 100dvh;
    overflow-y: auto;
    justify-content: center;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 22px;
    letter-spacing: -0.02em;
  }
  .brand-mark {
    color: #00E8A2;
    font-size: 26px;
    filter: drop-shadow(0 0 12px rgba(0, 232, 162, 0.5));
  }

  .side-eyebrow {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--text-42);
  }

  .side-heading {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(32px, 3.4vw, 46px);
    line-height: 1.05;
    letter-spacing: -0.025em;
    color: var(--text-1);
  }
  .side-heading span {
    display: block;
    color: var(--text-70);
    font-weight: 600;
  }

  .side-lede {
    margin: 0;
    max-width: 36ch;
    color: var(--text-70);
    line-height: 1.65;
    font-size: 16px;
  }

  .side-meta {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .side-meta li {
    display: flex;
    align-items: baseline;
    gap: 14px;
    font-size: 14px;
    color: var(--text-70);
    border-top: 1px solid var(--surface-09);
    padding-top: 12px;
  }
  .side-meta li span {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-42);
    letter-spacing: 0.15em;
  }

  .side-install {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 8px;
  }
}

/* ============================================================
   Feed — vertical scroll-snap container
   ============================================================ */
.feed {
  position: relative;
  scroll-snap-type: y mandatory;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior-y: contain;
  height: 100dvh;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  scrollbar-width: none;
}
.feed::-webkit-scrollbar {
  display: none;
}

/* On desktop, the feed becomes a centered "phone-in-a-browser-tab" */
@media (min-width: 1024px) {
  .feed {
    border-left: 1px solid var(--surface-09);
    border-right: 1px solid var(--surface-09);
    box-shadow: 0 0 120px rgba(0, 0, 0, 0.5);
  }
}

/* ============================================================
   Card
   ============================================================ */
.card {
  position: relative;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  min-height: 100vh;
  min-height: 100dvh;
  width: 100%;
  display: flex;
  flex-direction: column;
  padding: var(--card-pad-top) var(--card-pad-x) var(--card-pad-bot);
  background: var(--bg);
  overflow: hidden;
  isolation: isolate;
}

/* Archetype-tinted orb glow — behind everything */
.card-orb {
  position: absolute;
  top: var(--orb-pos-y);
  left: var(--orb-pos-x);
  transform: translate(-50%, -50%);
  width: clamp(280px, 70vw, 520px);
  height: clamp(280px, 70vw, 520px);
  background: radial-gradient(
    circle,
    var(--accent-glow) 0%,
    transparent 65%
  );
  filter: blur(12px);
  opacity: 0.55;
  z-index: 0;
  pointer-events: none;
  transition: opacity 800ms ease;
}

.card.is-active .card-orb {
  opacity: 0.75;
}

/* Subtle grain layer */
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse at top, transparent 0%, var(--bg) 90%),
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.012) 0px,
      rgba(255, 255, 255, 0.012) 1px,
      transparent 1px,
      transparent 3px
    );
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: screen;
  opacity: 0.6;
}

.card-head,
.card-body,
.card-foot {
  position: relative;
  z-index: 1;
}

/* Header */
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
}

.card-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 14px 0 12px;
  border-radius: var(--pill-radius);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 700;
}

.card-glyph {
  font-family: var(--font-display);
  font-size: 14px;
  filter: drop-shadow(0 0 6px var(--accent-glow));
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-action {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--text-70);
  background: var(--surface-05);
  border: 1px solid var(--surface-09);
  transition: background 200ms ease, color 200ms ease;
}
.card-action:hover {
  color: var(--text-1);
  background: var(--surface-13);
}

/* Body */
.card-body {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-content: center;
}

.card-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 5.4vw, 36px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--text-1);
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.5);
}

.card-sub {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--accent);
  letter-spacing: -0.01em;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.4);
}

.card-text {
  margin: 0;
  color: var(--text-70);
  line-height: 1.74;
  font-size: 16px;
  font-weight: 300;
  max-width: 38ch;
}

.card-callout {
  position: relative;
  padding: 16px 18px;
  border-radius: var(--callout-radius);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 36%, transparent);
  color: var(--text-1);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 500;
  max-width: 42ch;
}

.card-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.card-list li {
  position: relative;
  padding-left: 22px;
  color: var(--text-70);
  font-size: 15px;
  line-height: 1.55;
}
.card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Memory interval ladder (card 5 — the memory archetype card) */
.memory-ladder {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin: 2px 0 6px;
}
.memory-step {
  position: relative;
  border-radius: 12px;
  background: var(--surface-05);
  border: 1px solid var(--surface-13);
  padding: 10px 6px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 2px;
}
.memory-step span {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-42);
  line-height: 1;
}
.memory-step b {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--text-1);
  letter-spacing: -0.01em;
  line-height: 1.05;
}
.memory-step[data-int='1y'] {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 38%, transparent);
}
.memory-step[data-int='1y'] b {
  color: var(--accent);
}

/* Intensity preview row */
.intensity-row {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}
.intensity-chip {
  flex: 1;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--surface-05);
  border: 1px solid var(--surface-13);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-70);
}
.intensity-chip.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 24px var(--accent-soft);
}

/* Footer */
.card-foot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: 24px;
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 20px;
  border-radius: var(--pill-radius);
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.01em;
  box-shadow: 0 0 40px var(--accent-soft);
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.card-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 60px var(--accent-glow);
}
.card-cta:active {
  transform: translateY(0);
}

.card-foot-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-42);
}

/* ============================================================
   Card entrance animations
   ============================================================ */
.card .card-pill,
.card .card-actions,
.card .card-title,
.card .card-sub,
.card .card-text,
.card .card-callout,
.card .card-list,
.card .intensity-row,
.card .card-cta,
.card .card-foot-hint,
.card .quiz-options,
.card .install-row {
  opacity: 0;
  transform: translate(var(--enter-x), var(--enter-y))
    scale(var(--enter-scale));
  transition:
    opacity 460ms cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 460ms cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: 0ms;
}

.card.is-active .card-pill { transition-delay: 40ms; }
.card.is-active .card-actions { transition-delay: 40ms; }
.card.is-active .card-title { transition-delay: 100ms; }
.card.is-active .card-sub { transition-delay: 180ms; }
.card.is-active .card-text { transition-delay: 240ms; }
.card.is-active .card-callout { transition-delay: 300ms; }
.card.is-active .card-list { transition-delay: 300ms; }
.card.is-active .intensity-row { transition-delay: 320ms; }
.card.is-active .quiz-options { transition-delay: 280ms; }
.card.is-active .install-row { transition-delay: 320ms; }
.card.is-active .card-cta { transition-delay: 380ms; }
.card.is-active .card-foot-hint { transition-delay: 380ms; }

.card.is-active .card-pill,
.card.is-active .card-actions,
.card.is-active .card-title,
.card.is-active .card-sub,
.card.is-active .card-text,
.card.is-active .card-callout,
.card.is-active .card-list,
.card.is-active .intensity-row,
.card.is-active .card-cta,
.card.is-active .card-foot-hint,
.card.is-active .quiz-options,
.card.is-active .install-row {
  opacity: 1;
  transform: translate(0, 0) scale(1);
}

/* ============================================================
   Rabbit hole (card 4 — dive)
   ============================================================ */
.card-divable .card-dive-close {
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}
.card-divable[data-dive-state='open'] .card-dive-close {
  opacity: 1;
  pointer-events: auto;
}

.card-dive {
  margin-top: 8px;
  border-radius: var(--callout-radius);
  border: 1px solid var(--surface-13);
  background: var(--surface-05);
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transform: translateY(8px);
  transition:
    max-height 360ms cubic-bezier(0.2, 0.7, 0.2, 1),
    opacity 320ms ease,
    transform 320ms ease;
}
.card-divable[data-dive-state='open'] .card-dive {
  max-height: 460px;
  opacity: 1;
  transform: translateY(0);
}

.dive-track {
  display: flex;
  width: 100%;
  transition: transform 380ms cubic-bezier(0.2, 0.7, 0.2, 1);
  touch-action: pan-x;
}

.dive-card {
  flex: 0 0 100%;
  padding: 22px 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.dive-card .dive-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
}
.dive-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.015em;
  color: var(--text-1);
}
.dive-card p {
  margin: 0;
  color: var(--text-70);
  font-size: 14px;
  line-height: 1.6;
}

.dive-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px 16px;
  border-top: 1px solid var(--surface-09);
}

.dive-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border-radius: var(--pill-radius);
  background: var(--surface-09);
  color: var(--text-1);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  transition: background 180ms ease, opacity 180ms ease;
}
.dive-pill:hover {
  background: var(--surface-17);
}
.dive-pill[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
}

.dive-progress {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-42);
}

.card-divable[data-dive-state='open'] .card-cta[data-dive-open] {
  opacity: 0;
  pointer-events: none;
}

/* ============================================================
   Quiz card
   ============================================================ */
.quiz-options {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.quiz-option {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  text-align: left;
  border-radius: 14px;
  background: var(--surface-05);
  border: 1px solid var(--surface-13);
  color: var(--text-1);
  font-size: 15px;
  line-height: 1.4;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    transform 180ms ease,
    opacity 240ms ease;
}
.quiz-option:hover {
  background: var(--surface-09);
  border-color: var(--surface-17);
}
.quiz-option:active {
  transform: scale(0.99);
}

.quiz-letter {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--surface-13);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-70);
  transition: background 200ms ease, color 200ms ease;
}

.card-quiz[data-state='answered'] .quiz-option {
  pointer-events: none;
  opacity: 0.45;
}
.card-quiz[data-state='answered'] .quiz-option.is-correct {
  opacity: 1;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-color: var(--accent);
}
.card-quiz[data-state='answered'] .quiz-option.is-correct .quiz-letter {
  background: var(--accent);
  color: var(--bg);
}
.card-quiz[data-state='answered'] .quiz-option.is-wrong {
  opacity: 1;
  background: rgba(255, 90, 126, 0.10);
  border-color: rgba(255, 90, 126, 0.55);
}
.card-quiz[data-state='answered'] .quiz-option.is-wrong .quiz-letter {
  background: rgba(255, 90, 126, 0.85);
  color: var(--bg);
}

.quiz-reveal {
  margin-top: 4px;
  padding: 14px 16px;
  border-radius: var(--callout-radius);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 36%, transparent);
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 260ms ease 80ms, transform 260ms ease 80ms;
}
.card-quiz[data-state='answered'] .quiz-reveal {
  opacity: 1;
  transform: none;
}
.quiz-reveal[hidden] { display: none; }

.quiz-reveal-line {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--text-1);
  letter-spacing: -0.01em;
}
.quiz-reveal-meta {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-70);
}
.quiz-reveal-meta strong {
  color: var(--accent);
  font-weight: 700;
}
.quiz-reveal-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* ============================================================
   Install card / store badges
   ============================================================ */
.install-row,
.below-cta,
.side-install {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.store-badge {
  flex: 1 1 160px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  min-height: 54px;
  padding: 8px 16px;
  border-radius: 12px;
  background: var(--text-1);
  color: var(--bg);
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.store-badge:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(255, 255, 255, 0.12);
}
.store-kicker {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  opacity: 0.65;
  line-height: 1;
}
.store-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  margin-top: 2px;
}

.store-badge-play {
  background: linear-gradient(135deg, #ffffff 0%, #e6ecff 100%);
}

/* ============================================================
   Below-fold — multi-section marketing site
   ============================================================ */
.below-fold {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  border-top: 1px solid var(--surface-09);
  isolation: isolate;
  position: relative;
}

/* Reset body archetype on entering below-fold so accent tinting is stable */
.below-fold {
  --accent: #5B8FFF;
  --accent-soft: rgba(91, 143, 255, 0.16);
  --accent-glow: rgba(91, 143, 255, 0.45);
}

.block {
  padding: 96px 24px 72px;
  border-bottom: 1px solid var(--surface-05);
}
.block:last-of-type {
  border-bottom: 0;
}

@media (max-width: 640px) {
  .block { padding: 64px 20px 56px; }
}

.block-inner {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.block-inner-split {
  max-width: 1080px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}
@media (min-width: 900px) {
  .block-inner-split {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 64px;
  }
}

.block-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.block-heading {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 44px);
  letter-spacing: -0.025em;
  line-height: 1.08;
  color: var(--text-1);
  max-width: 22ch;
}

.block-text {
  margin: 0;
  color: var(--text-70);
  font-size: 17px;
  line-height: 1.72;
  font-weight: 300;
  max-width: 60ch;
}
.block-text em {
  color: var(--text-1);
  font-style: italic;
  font-weight: 400;
}

.block-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.block-list li {
  position: relative;
  padding: 10px 0 10px 22px;
  color: var(--text-70);
  font-size: 15.5px;
  border-top: 1px solid var(--surface-05);
}
.block-list li:first-child { border-top: 0; padding-top: 0; }
.block-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.block-list li:first-child::before { top: 7px; }
.block-list b {
  color: var(--text-1);
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  margin-right: 6px;
}

.block-foot {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-70);
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.block-foot-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--pill-radius);
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
}
.block-foot-bright {
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text-1);
  font-weight: 600;
  line-height: 1.4;
  max-width: 52ch;
}
.block-foot-bright i {
  color: var(--accent);
  font-style: italic;
  font-weight: 700;
}

/* ----- A. Memory engine ----- */
.block-memory {
  --accent: #5B8FFF;
  --accent-soft: rgba(91, 143, 255, 0.16);
  --accent-glow: rgba(91, 143, 255, 0.45);
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 4px;
}
@media (min-width: 720px) {
  .metric-row { grid-template-columns: repeat(3, 1fr); }
}
.metric {
  padding: 18px 18px;
  border-radius: var(--callout-radius);
  background: var(--surface-05);
  border: 1px solid var(--surface-09);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.metric-kicker {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-42);
}
.metric strong {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--text-1);
  line-height: 1.2;
}
.metric-strike {
  color: var(--text-42) !important;
  text-decoration: line-through;
  text-decoration-color: rgba(255,90,126,0.5);
  text-decoration-thickness: 2px;
}
.metric-bright {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 36%, transparent);
}
.metric-bright strong {
  color: var(--accent);
}

.ladder {
  position: relative;
  margin-top: 12px;
  padding: 18px 0 4px;
}
.ladder-rail {
  position: absolute;
  left: 4%;
  right: 4%;
  top: 36px;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--surface-13) 0%,
    var(--accent) 20%,
    var(--accent) 80%,
    var(--surface-13) 100%
  );
  border-radius: 999px;
  z-index: 0;
}
.ladder-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  position: relative;
  z-index: 1;
}
.ladder-steps li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}
.ladder-steps li b {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(14px, 1.6vw, 18px);
  color: var(--text-1);
  letter-spacing: -0.01em;
  background: var(--bg);
  padding: 4px 8px;
  border-radius: 100px;
  border: 1px solid var(--accent);
  min-width: 40px;
  position: relative;
}
.ladder-steps li b::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 100px;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
}
.ladder-steps li span {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-42);
  line-height: 1.2;
}
.ladder-steps li.is-end b {
  background: var(--accent);
  color: var(--bg);
}

@media (max-width: 540px) {
  .ladder-steps { grid-template-columns: repeat(4, 1fr); gap: 12px 4px; }
  .ladder-steps li:nth-child(n+5) { display: none; }
  .ladder-steps li:nth-child(4) { /* keep 4 */ }
  .ladder-rail { display: none; }
}

/* ----- B. Inside the app — 5-tab grid ----- */
.tabs-grid {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 640px) {
  .tabs-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .tabs-grid .tab-card:first-child { grid-column: 1 / -1; }
}
@media (min-width: 1000px) {
  .tabs-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
  }
  .tabs-grid .tab-card:first-child { grid-column: auto; }
}

.tab-card {
  position: relative;
  padding: 18px 18px 22px;
  border-radius: 18px;
  background: var(--surface-05);
  border: 1px solid var(--surface-09);
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
  isolation: isolate;
}
.tab-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 110% -20%,
    color-mix(in srgb, var(--accent) 22%, transparent) 0%,
    transparent 55%
  );
  pointer-events: none;
  opacity: 0.4;
  z-index: 0;
}
.tab-card > * { position: relative; z-index: 1; }

.tab-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-42);
}
.tab-shot {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--surface-13);
  background: #02050b;
  aspect-ratio: 9 / 19;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}
.tab-shot img {
  width: 100%;
  height: auto;
  display: block;
}
.tab-card h3 {
  margin: 4px 0 -4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--text-1);
}
.tab-card p {
  margin: 0;
  color: var(--text-70);
  font-size: 13.5px;
  line-height: 1.55;
}

/* ----- C. Goals ----- */
.block-goals {
  --accent: #FF7A2F;
  --accent-soft: rgba(255, 122, 47, 0.16);
  --accent-glow: rgba(255, 122, 47, 0.45);
}
.block-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.block-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.video-frame {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--surface-13);
  background: #02050b;
  box-shadow: var(--shadow-card);
  width: 100%;
  max-width: 360px;
}
.video-frame video {
  width: 100%;
  height: auto;
  display: block;
}
.video-frame-wide {
  max-width: 760px;
  margin: 16px auto 0;
}

/* ----- D. What this isn't ----- */
.block-isnt {
  --accent: #FF5A7E;
  --accent-soft: rgba(255, 90, 126, 0.16);
  --accent-glow: rgba(255, 90, 126, 0.45);
}
.contrast-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 8px;
}
@media (min-width: 720px) {
  .contrast-grid { grid-template-columns: repeat(3, 1fr); }
}
.contrast-card {
  padding: 22px;
  border-radius: var(--callout-radius);
  background: var(--surface-05);
  border: 1px solid var(--surface-09);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 200ms ease, background 200ms ease;
}
.contrast-card:hover {
  border-color: color-mix(in srgb, var(--accent) 38%, transparent);
  background: var(--accent-soft);
}
.contrast-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  font-weight: 700;
}
.contrast-card p {
  margin: 0;
  color: var(--text-70);
  font-size: 14.5px;
  line-height: 1.6;
}

/* ----- E. Watch (60s) ----- */
.block-watch {
  --accent: #00E8A2;
  --accent-soft: rgba(0, 232, 162, 0.16);
  --accent-glow: rgba(0, 232, 162, 0.42);
}

/* ----- F. Install ----- */
.block-get {
  --accent: #FF7A2F;
  --accent-soft: rgba(255, 122, 47, 0.16);
  --accent-glow: rgba(255, 122, 47, 0.42);
}
.get-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
  max-width: 460px;
}

/* ----- G. Footer ----- */
.site-foot {
  padding: 56px 24px 64px;
  border-top: 1px solid var(--surface-09);
}
.site-foot-inner {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.site-foot-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--text-1);
}
.site-foot-brand .brand-mark {
  color: #00E8A2;
  font-size: 22px;
}
.site-foot-nav {
  display: inline-flex;
  align-items: center;
  gap: 22px;
}
.site-foot-nav a {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-70);
  transition: color 160ms ease;
}
.site-foot-nav a:hover { color: var(--text-1); }
.site-foot-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-42);
  width: 100%;
  text-align: center;
  padding-top: 18px;
  border-top: 1px solid var(--surface-05);
  margin-top: 8px;
}

/* ============================================================
   Legal / Support shell (privacy.html, support.html)
   ============================================================ */
.legal-page {
  background: var(--bg);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.legal-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--surface-09);
}
.legal-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--text-1);
}
.legal-header .brand .brand-mark {
  color: #00E8A2;
  font-size: 22px;
  filter: drop-shadow(0 0 10px rgba(0, 232, 162, 0.5));
}
.legal-header nav a {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-70);
  transition: color 160ms ease;
}
.legal-header nav a:hover { color: var(--text-1); }

.legal-shell {
  max-width: min(720px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 64px 0 96px;
  flex: 1;
}
.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-42);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 36px;
  transition: color 160ms ease;
}
.legal-back:hover { color: var(--text-1); }

.legal-eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #5B8FFF;
}
.legal-heading {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--text-1);
}
.legal-subheading {
  margin: 0 0 48px;
  color: var(--text-70);
  font-size: 17px;
  line-height: 1.7;
  max-width: 56ch;
}
.legal-updated {
  margin: 0 0 48px;
  color: var(--text-42);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.legal-section {
  margin-bottom: 40px;
}
.legal-section h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.015em;
  color: var(--text-1);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--surface-09);
}
.legal-section p,
.legal-section li {
  color: var(--text-70);
  font-size: 15.5px;
  line-height: 1.74;
}
.legal-section p {
  margin: 0 0 14px;
}
.legal-section p:last-child { margin-bottom: 0; }
.legal-section ul {
  margin: 0 0 14px;
  padding-left: 22px;
}
.legal-section li {
  margin-bottom: 8px;
}
.legal-section strong {
  color: var(--text-1);
  font-weight: 600;
}

.faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--surface-05);
  border: 1px solid var(--surface-09);
  border-radius: var(--callout-radius);
  padding: 22px 24px;
}
.faq-q {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  color: var(--text-1);
  letter-spacing: -0.005em;
}
.faq-a {
  margin: 0;
  color: var(--text-70);
  font-size: 14.5px;
  line-height: 1.7;
}

.contact-card {
  background: var(--surface-05);
  border: 1px solid var(--surface-09);
  border-radius: 18px;
  padding: 28px 30px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.contact-card p {
  margin: 0;
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  color: #5B8FFF;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: color 160ms ease;
}
.contact-link:hover { color: var(--text-1); }

/* ============================================================
   Focus visible
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .card .card-pill,
  .card .card-actions,
  .card .card-title,
  .card .card-sub,
  .card .card-text,
  .card .card-callout,
  .card .card-list,
  .card .intensity-row,
  .card .card-cta,
  .card .card-foot-hint,
  .card .quiz-options,
  .card .install-row {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .card-orb { opacity: 0.4 !important; transition: none !important; }

  .card-dive,
  .dive-track,
  .quiz-reveal,
  .card-cta,
  .store-badge {
    transition: none !important;
  }
}

/* ============================================================
   Very small screens — keep readable
   ============================================================ */
@media (max-width: 380px) {
  :root {
    --card-pad-x: 20px;
    --card-pad-top: 48px;
    --card-pad-bot: 64px;
  }
  .card-title {
    font-size: clamp(24px, 6vw, 32px);
  }
}