:root {
  --void: #07090d;
  --launch: #0f1217;
  --signal: #193ae7;
  --signal-deep: #1229a8;
  --ice: #f3f5fb;
  --mute: #9aa4b8;
  --line: rgba(243, 245, 251, 0.1);
  --line-strong: rgba(25, 58, 231, 0.55);
  --protein: #4d8bff;
  --fat: #3dcf6a;
  --carbs: #f0a33a;
  --cal: #ffffff;
  --display: "Teko", ui-sans-serif, system-ui, sans-serif;
  --body: "Barlow", ui-sans-serif, system-ui, sans-serif;
  --mono: "Roboto Mono", ui-monospace, monospace;
  --wide: 1080px;
  --prose: 68ch;
  --radius: 16px;
  --nav-h: 64px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--void);
  color: var(--ice);
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.55;
  min-height: 100dvh;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--protein);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ice);
}

:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 100;
  background: var(--ice);
  color: var(--void);
  padding: 8px 12px;
  font-weight: 700;
}

.skip:focus {
  top: 12px;
}

.wrap {
  width: 100%;
  max-width: var(--wide);
  padding-inline: 20px;
  margin-inline: auto;
  min-width: 0;
}

/* --- nav: indigo bar, like the in-app navigation --- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: var(--nav-h);
  display: flex;
  align-items: center;
  background: var(--signal);
  color: var(--ice);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ice);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--signal);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  color: rgba(243, 245, 251, 0.78);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ice);
}

/* --- hero --- */

.hero {
  position: relative;
  padding: 56px 0 28px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 82% 8%, color-mix(in srgb, var(--signal) 38%, transparent), transparent 58%),
    var(--void);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero-stage {
  position: relative;
  z-index: 1;
  min-width: 0;
  width: 100%;
}

.hero-mark {
  position: absolute;
  width: min(640px, 92vw);
  height: auto;
  left: -12%;
  top: -8%;
  opacity: 0.2;
  pointer-events: none;
  z-index: 0;
  animation: mark-spin 64s linear infinite;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--protein);
  margin: 0 0 16px;
}

.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  letter-spacing: 0.01em;
  line-height: 0.88;
  text-transform: uppercase;
  margin: 0 0 18px;
}

.lede {
  max-width: 38ch;
  color: var(--mute);
  font-size: 1.15rem;
  margin: 0;
  overflow-wrap: break-word;
}

/* --- week card (signature) --- */

.week-card {
  position: relative;
  z-index: 1;
  background: var(--launch);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 18px 16px 16px;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.45);
  min-width: 0;
  width: 100%;
  max-width: 100%;
}

.week-card .kicker {
  margin-bottom: 12px;
}

.days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
  margin: 0 0 18px;
  width: 100%;
}

.days button {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--mute);
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  min-height: 44px;
  min-width: 0;
  padding: 0;
  cursor: pointer;
  border-radius: 8px;
  touch-action: manipulation;
}

.days button:hover {
  color: var(--ice);
  border-color: var(--line-strong);
}

.days button[aria-selected="true"] {
  color: var(--ice);
  background: var(--signal);
  border-color: var(--signal);
}

.week-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 16px;
}

.week-load {
  font-family: var(--display);
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1;
  margin: 0;
}

.week-kcal {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--mute);
}

.macros {
  display: grid;
  gap: 12px;
  margin: 0;
}

.macro {
  display: grid;
  gap: 6px;
}

.macro-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mute);
}

.macro-row strong {
  color: var(--ice);
  font-weight: 500;
  flex-shrink: 0;
}

.track {
  height: 8px;
  background: rgba(243, 245, 251, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.track > i {
  display: block;
  height: 100%;
  width: var(--fill, 0%);
  border-radius: inherit;
  transform-origin: left center;
  transition: width 280ms var(--ease);
}

.track.cal > i { background: var(--cal); }
.track.protein > i { background: var(--protein); }
.track.fat > i { background: var(--fat); }
.track.carbs > i { background: var(--carbs); }

.week-note {
  margin: 14px 0 0;
  font-size: 0.82rem;
  color: color-mix(in srgb, var(--mute) 85%, transparent);
}

/* --- sections --- */

.use,
.names,
.distinct,
.stage,
.platforms {
  padding: 16px 0 72px;
}

.stage {
  padding-top: 8px;
}

.use h2,
.names h2,
.distinct h2,
.stage h2,
.platforms h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.8rem, 4.4vw, 2.7rem);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 0.95;
  margin: 0 0 12px;
}

.section-lede {
  color: var(--mute);
  max-width: 52ch;
  margin: 0 0 28px;
}

.steps {
  display: grid;
  gap: 16px;
}

.step {
  border-top: 1px solid var(--line);
  padding: 18px 0 4px;
}

.step h3 {
  font-family: var(--display);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 6px;
}

.step p {
  margin: 0;
  color: var(--mute);
}

.versus {
  display: grid;
  gap: 16px;
}

.pair {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 8px;
}

.pair-yes {
  border-color: var(--line-strong);
  background: color-mix(in srgb, var(--signal) 12%, var(--launch));
}

.pair h3 {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 12px;
  color: var(--mute);
}

.pair-yes h3 {
  color: var(--protein);
}

.pair ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.pair li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
  color: var(--ice);
}

.feature-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.feature {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.feature h3 {
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 6px;
}

.feature p {
  margin: 0;
  color: var(--mute);
  max-width: 62ch;
}

.stage-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.phones {
  display: grid;
  gap: 20px;
  justify-items: center;
}

.phone {
  margin: 0;
  width: min(280px, 100%);
}

.phone img {
  width: 100%;
  height: auto;
  border-radius: 36px;
  border: 3px solid #1a2f9c;
  box-shadow:
    0 0 0 1px #4d6dff,
    0 40px 80px rgba(0, 0, 0, 0.5);
}

.phone figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute);
  text-align: center;
}

.stage-copy p {
  color: var(--mute);
  margin: 0 0 12px;
  max-width: 46ch;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  background: color-mix(in srgb, var(--launch) 70%, transparent);
}

.panel p {
  margin: 0;
  color: var(--mute);
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.pills span {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ice);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 8px 12px;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

/* --- footer --- */

.site-foot {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--mute);
  font-size: 0.9rem;
}

.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
}

.site-foot nav {
  display: flex;
  gap: 16px;
}

.site-foot a {
  color: var(--mute);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-foot a:hover {
  color: var(--ice);
}

/* --- inner pages --- */

.page {
  padding: 48px 0 96px;
}

.page header h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.4rem, 6vw, 4rem);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 0.92;
  margin: 0 0 8px;
}

.updated {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--mute);
  margin: 0 0 32px;
}

.prose {
  max-width: min(var(--prose), 100%);
  overflow-wrap: break-word;
}

.prose h2 {
  font-family: var(--display);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 2rem 0 0.55rem;
}

.prose p,
.prose li {
  color: var(--mute);
}

.prose p {
  margin: 0 0 1rem;
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li {
  margin: 0 0 0.45rem;
}

.prose strong {
  color: var(--ice);
}

.prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  color: var(--ice);
}

/* --- 404 --- */

.lost {
  min-height: calc(100dvh - var(--nav-h) - 120px);
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
  padding: 48px 20px;
}

.lost-mark {
  width: 96px;
  height: 96px;
  opacity: 0.45;
  margin-bottom: 20px;
}

.lost h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 0.9;
  margin: 0 0 12px;
}

.lost p {
  color: var(--mute);
  margin: 0 0 24px;
}

.lost a.home {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--signal);
  color: var(--ice);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  width: max-content;
}

.lost a.home:hover {
  color: var(--ice);
  filter: brightness(1.08);
}

@keyframes mark-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (max-width: 640px) {
  .wrap {
    padding-inline: 16px;
  }

  .brand {
    font-size: 1.15rem;
    gap: 8px;
  }

  .brand img {
    width: 28px;
    height: 28px;
  }

  .nav-inpage {
    display: none;
  }

  .nav-links a {
    padding: 0 6px;
    letter-spacing: 0.04em;
  }

  .days {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .days button {
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    overflow: hidden;
  }

  .week-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .hero-mark {
    width: min(360px, 80vw);
    left: -20%;
    top: -8%;
    opacity: 0.16;
  }
}

@media (min-width: 800px) {
  .hero {
    padding: 72px 0 12px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: center;
  }

  .hero-mark {
    width: min(720px, 58vw);
    left: -10%;
    top: -14%;
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .step {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 0 0 0 20px;
  }

  .versus {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .phones {
    grid-template-columns: repeat(2, minmax(0, 300px));
    justify-content: start;
  }

  .stage-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
  }
}

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

  .track > i {
    transition: none;
  }

  .hero-mark {
    animation: none;
  }
}