/* Design tokens from Paper */
:root {
  --font-family: "Google Sans Flex", "Google Sans", system-ui, sans-serif;

  --color-bg: #ffffff;
  --color-text: #000000;
  --color-text-muted: rgba(0, 0, 0, 0.702);
  --color-surface: rgba(0, 0, 0, 0.0196);
  --color-surface-card: rgba(0, 0, 0, 0.0314);
  --color-button-bg: #000000;
  --color-button-text: rgba(255, 255, 255, 0.949);
  --color-caption-bg: rgba(255, 255, 255, 0.4);
  --color-focus: #000000;

  --gradient-handoff: linear-gradient(
    180deg,
    oklab(83.4% -0.022 -0.076) 0%,
    oklab(95.3% -0.015 0.0005) 100%
  );

  --text-hero: clamp(2.5rem, 5vw, 3.5rem);
  --text-intro: clamp(1.375rem, 2.5vw, 1.75rem);
  --text-price: clamp(1.625rem, 3vw, 2rem);
  --text-label: 1.125rem;
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-caption: 0.8125rem;

  --leading-tight: 1;
  --leading-body: 1.5;
  --leading-intro: 1.286;

  --space-section-x: clamp(1rem, 2vw, 1.5rem);
  --space-panel: clamp(2rem, 6vw, 5rem);
  --space-section-y: clamp(4rem, 12vw, 6.125rem);
  --space-gap-lg: 2.5rem;
  --space-gap-md: 1.5rem;
  --space-gap-sm: 1rem;

  --radius-panel: 0.5rem;
  --radius-card: 0.25rem;
  --radius-visual: 1rem;
  --radius-pill: 1000px;

  --max-width-prose: 50rem;
  --max-width-narrow: 36rem;
  --max-width-card: 33rem;

  --height-section-full: 100dvh;

  --transition-reveal: opacity 0.85s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.85s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-interactive: background-color 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    gap 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text);
  background: var(--color-bg);
  font-synthesis: none;
  padding-inline: env(safe-area-inset-left) env(safe-area-inset-right);
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

p {
  margin: 0;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: inherit;
}

/* Section label */
.section-label {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.section-label__dot {
  flex-shrink: 0;
  width: 0.375rem;
  height: 0.375rem;
  border-radius: var(--radius-pill);
  background: var(--color-text);
}

.section-label__text {
  font-size: var(--text-label);
  font-weight: 500;
  line-height: var(--text-label);
  color: var(--color-text);
}

/* Shared body text */
.body-text {
  color: var(--color-text-muted);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  text-wrap: pretty;
}

/* Panel container */
.panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-gap-lg);
  padding: var(--space-panel);
  border-radius: var(--radius-panel);
  background: var(--color-surface);
}

.panel--flat {
  flex: 1;
  min-width: 0;
}

/* Hero */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  min-height: 100vh;
  min-height: var(--height-section-full);
  padding: var(--space-section-y) var(--space-section-x);
  text-align: center;
}

.hero__logo {
  flex-shrink: 0;
}

.hero__title {
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: var(--leading-tight);
  color: var(--color-text);
  text-wrap: balance;
}

/* Introduction */
.intro {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-gap-md);
  min-height: 100vh;
  min-height: var(--height-section-full);
  padding: var(--space-section-y) var(--space-section-x);
  text-align: center;
}

.intro__copy {
  display: flex;
  flex-direction: column;
  gap: 1.286em;
  max-width: var(--max-width-prose);
}

.intro__body {
  font-size: var(--text-intro);
  line-height: var(--leading-intro);
  color: var(--color-text);
  text-wrap: pretty;
}

/* Build section */
.build {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: var(--height-section-full);
  padding: 0 var(--space-section-x) 1.5rem;
}

.build .panel {
  align-items: center;
  flex: 1;
  min-height: 0;
  justify-content: flex-start;
  background: transparent;
}

.build .card-grid {
  align-self: stretch;
  width: 100%;
  flex: 1;
  min-height: 0;
}

.build .card-grid--two {
  grid-template-rows: 1fr;
  align-items: stretch;
}

.build .card--large {
  height: 100%;
  min-height: 12rem;
}

.card-grid {
  display: grid;
  gap: var(--space-gap-lg);
}

.card-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-grid--compact {
  gap: var(--space-gap-sm);
}

.card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-card);
  background: var(--color-surface-card);
}

.card--large {
  align-items: center;
  justify-content: center;
  gap: var(--space-gap-sm);
  padding: 2.5rem;
  text-align: center;
}

.card--large .card__list {
  text-align: left;
  width: fit-content;
  max-width: 100%;
}

.card--small {
  align-items: flex-start;
  gap: 0.5rem;
  padding: 1rem;
  max-width: var(--max-width-card);
}

.card__heading {
  font-size: var(--text-small);
  font-weight: 600;
  line-height: var(--leading-body);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text);
}

.card__heading--diamond::before {
  content: "♢ ";
}

.card__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  color: var(--color-text-muted);
  font-size: var(--text-body);
  line-height: var(--leading-body);
}

.card__list li {
  position: relative;
  padding-left: 1.125rem;
}

.card__list li::before {
  content: "•";
  position: absolute;
  left: 0;
}

/* Handoff section */
.handoff {
  padding: 0 var(--space-section-x) 1.5rem;
}

.handoff .panel {
  gap: 3.5rem;
  background: transparent;
}

.handoff__intro {
  display: flex;
  flex-direction: column;
  gap: var(--space-gap-lg);
}

.handoff__copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-gap-md);
}

.handoff__text {
  max-width: var(--max-width-card);
}

.handoff__formats {
  display: flex;
  align-items: stretch;
  align-self: stretch;
  gap: var(--space-gap-sm);
}

.handoff__format-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  width: var(--max-width-card);
  flex-shrink: 0;
  padding: 1rem;
  border-radius: var(--radius-card);
  background: var(--color-surface-card);
}

.handoff__format-title {
  font-size: var(--text-small);
  font-weight: 600;
  line-height: var(--leading-body);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text);
}

.handoff__format-card .body-text {
  font-size: var(--text-small);
  line-height: var(--leading-body);
}

.handoff__visual {
  margin: 0;
  align-self: stretch;
  width: 100%;
}

.handoff__visual-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  height: 50rem;
  padding: 0 2.5rem 1.5rem;
  border-radius: var(--radius-visual);
  background: var(--gradient-handoff);
  overflow: hidden;
}

.handoff__image {
  width: min(100%, 61.6875rem);
  height: 44.0625rem;
  flex-shrink: 0;
  object-fit: cover;
  object-position: center;
}

.handoff__caption {
  flex-shrink: 0;
  margin-top: 0;
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-pill);
  background: var(--color-caption-bg);
  font-size: var(--text-caption);
  line-height: 1.231;
  text-align: center;
  color: var(--color-text-muted);
}

/* Outcomes section */
.outcomes {
  padding: 0 var(--space-section-x) 1.5rem;
}

.outcomes__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-gap-md);
  min-height: clamp(24rem, 47.5vw, 45rem);
}

.outcomes .panel {
  align-items: center;
  justify-content: center;
}

.outcomes .section-label,
.outcomes__content,
.outcomes .timeline {
  width: min(100%, var(--max-width-card));
}

.outcomes__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-gap-md);
}

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.timeline__item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  width: 100%;
  padding: 0.5rem;
  border-radius: var(--radius-card);
  background: var(--color-surface-card);
}

.timeline__title {
  font-size: var(--text-small);
  font-weight: 600;
  line-height: var(--leading-body);
  color: var(--color-text);
}

.timeline__body {
  margin: 0;
  font-size: var(--text-small);
  line-height: var(--leading-body);
  color: var(--color-text-muted);
}

/* Investment */
.investment {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-gap-lg);
  min-height: 100vh;
  min-height: var(--height-section-full);
  padding: var(--space-section-y) var(--space-section-x);
  text-align: center;
}

.investment__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-gap-md);
}

.investment__price {
  max-width: var(--max-width-prose);
  font-size: var(--text-price);
  line-height: var(--leading-intro);
  color: var(--color-text);
  text-wrap: balance;
}

.investment__note {
  max-width: var(--max-width-narrow);
}

/* CTA button */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-pill);
  background: var(--color-button-bg);
  color: var(--color-button-text);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  text-decoration: none;
  transition: var(--transition-interactive);
}

.cta:hover {
  gap: 0.625rem;
  transform: scale(1.1);
  background: #1a1a1a;
}

.cta:active {
  transform: scale(1.05);
}

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

.cta__icon {
  flex-shrink: 0;
}

/* Reveal animations */
@media (prefers-reduced-motion: no-preference) {
  html.js .reveal-item {
    opacity: 0;
    transform: scale(0.94);
    transform-origin: center center;
    transition: var(--transition-reveal);
    transition-delay: var(--reveal-delay, 0s);
  }

  html.js .reveal.is-visible .reveal-item {
    opacity: 1;
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-item {
    opacity: 1;
    transform: none;
  }

  .cta {
    transition: none;
  }

  .cta:hover,
  .cta:active {
    transform: none;
  }
}

/* Responsive */
@media (max-width: 960px) {
  .card-grid--two,
  .outcomes__grid {
    grid-template-columns: 1fr;
  }

  .build .card-grid--two {
    grid-template-rows: none;
  }

  .build .card--large {
    height: auto;
    min-height: 0;
  }

  .card--small {
    max-width: none;
  }

  .handoff__formats {
    flex-direction: column;
    align-items: flex-start;
  }

  .handoff__format-card {
    width: 100%;
    height: auto;
  }

  .timeline__item {
    max-width: none;
  }

  .handoff__visual-inner {
    height: auto;
    min-height: 20rem;
    justify-content: flex-start;
    padding: 2rem 1.5rem 1.5rem;
  }

  .handoff__image {
    width: 100%;
    height: auto;
  }
}

@media (max-width: 640px) {
  .hero {
    gap: 2rem;
  }

  .outcomes__grid {
    min-height: auto;
  }

  .card--large {
    padding: 1.5rem;
  }

  .panel {
    gap: 2rem;
    padding: 1.5rem;
  }

  .handoff__visual-inner {
    padding: 2.5rem 1rem 1.5rem;
  }

  .handoff__caption {
    border-radius: var(--radius-card);
  }
}