@font-face {
  font-family: "Caveat";
  src: url("assets/Caveat-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --paper: #f7f8fa;
  --paper-alt: #eef1f6;
  --surface: #ffffff;
  --ink: #101828;
  --muted: #667085;
  --border: #e4e9f0;
  --accent: #2196f3;
  --accent-soft: #ebf2fe;
  --pastel-yellow: #ffeb3b;
  --pastel-green: #8bc34a;
  --pastel-blue: #2196f3;
  --pastel-orange: #ff9800;
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  --font-hand: "Caveat", cursive;
  --radius: 16px;
  --radius-sm: 12px;
  --max: 1120px;
  --header-h: 56px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--ink);
  background-color: var(--paper);
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: -1px -1px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 0.75rem;
  background: var(--ink);
  color: #fff;
  border-radius: 8px;
  font-size: 0.875rem;
}

.skip-link:focus {
  top: 1rem;
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
}

.site-header__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.9375rem;
  color: var(--muted);
}

.site-nav a:hover {
  color: var(--ink);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
}

.brand__icon {
  border-radius: 8px;
  flex-shrink: 0;
}

.brand__icon--lg {
  border-radius: 16px;
}

.brand__name {
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand__name--hero {
  font-size: clamp(2.75rem, 8vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0;
}

/* —— Hero —— */
.hero {
  display: flex;
  flex-direction: column;
}

.hero__copy {
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 4rem) 1.25rem clamp(1.5rem, 4vw, 2.5rem);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.brand--hero {
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.hero__headline {
  margin: 0 0 0.75rem;
  font-size: clamp(1.25rem, 3.2vw, 1.75rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 22ch;
}

.hero__sub {
  margin: 0 0 1.75rem;
  font-size: clamp(1rem, 2.2vw, 1.125rem);
  color: var(--muted);
  max-width: 36ch;
}

.hero__visual {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem clamp(2rem, 5vw, 3rem);
  position: relative;
}

.hero__image {
  width: 100%;
  max-height: min(48vh, 420px);
  height: auto;
  object-fit: contain;
  object-position: center top;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  will-change: transform, opacity;
  transition: transform 0.6s var(--ease), opacity 0.6s var(--ease);
}

.hero-animate {
  opacity: 0;
  transform: translateY(16px);
  animation: rise-in 0.8s var(--ease) forwards;
}

.hero-animate:nth-child(1) {
  animation-delay: 0.05s;
}
.hero-animate:nth-child(2) {
  animation-delay: 0.18s;
}
.hero-animate:nth-child(3) {
  animation-delay: 0.3s;
}
.hero-animate:nth-child(4) {
  animation-delay: 0.42s;
}

@keyframes rise-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* —— Store badges (official artwork) —— */
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.75rem;
  justify-content: center;
}

.store-buttons--center {
  justify-content: center;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  line-height: 0;
  border-radius: 8px;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.store-btn:hover {
  transform: translateY(-1px);
  opacity: 0.92;
}

.store-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.store-btn__badge {
  height: 40px;
  width: auto;
}

/* Google Play badge includes extra transparent padding */
.store-btn__badge--google {
  height: 60px;
  margin: -10px -8px;
}

/* —— Features —— */
.feature {
  padding: clamp(3.5rem, 10vw, 6.5rem) 1.25rem;
}

.feature--alt {
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  border-block: 1px solid var(--border);
}

.feature__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.feature__inner--split {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (min-width: 860px) {
  .feature__inner--split {
    grid-template-columns: 1fr 1fr;
  }

  .feature__inner--reverse .feature__text {
    order: 2;
  }

  .feature__inner--reverse .feature__visual {
    order: 1;
  }
}

.feature__eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.feature h2 {
  margin: 0 0 0.875rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.feature__body {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--muted);
  max-width: 38ch;
}

.feature__body--narrow {
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
}

.feature__text--center {
  text-align: center;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.feature__text--center .feature__body {
  margin-left: auto;
  margin-right: auto;
}

.feature__handsample {
  margin: 1.25rem 0 0;
  font-family: var(--font-hand);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--ink);
  opacity: 0.85;
}

.feature__image {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

/* Write demo */
.write-demo {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.write-demo__mode {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}

.write-demo__mode--hand {
  border-top: 4px solid var(--pastel-yellow);
}

.write-demo__mode--type {
  border-top: 4px solid var(--pastel-blue);
}

.write-demo__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.write-demo__sample {
  margin: 0;
  font-family: var(--font-hand);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  line-height: 1.2;
  color: var(--ink);
}

.write-demo__typed {
  margin: 0;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

/* Detail grid — task context */
.detail-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 720px) {
  .detail-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.detail-item {
  padding: 0.25rem 0.15rem 0.5rem;
  position: relative;
}

.detail-item__accent {
  display: block;
  width: 28px;
  height: 4px;
  border-radius: 2px;
  margin-bottom: 1rem;
}

.detail-item__accent--notes {
  background: var(--pastel-green);
}

.detail-item__accent--dates {
  background: var(--pastel-orange);
}

.detail-item__accent--tags {
  background: var(--accent);
}

.detail-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.detail-item p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

/* Section views */
.section-views {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 800px) {
  .section-views {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: end;
  }
}

.section-views__item {
  margin: 0;
}

.section-views__item img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.section-views__item figcaption {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
  text-align: center;
}

/* —— Closing CTA —— */
.closing {
  padding: clamp(4rem, 12vw, 7rem) 1.25rem;
  text-align: center;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--accent-soft) 100%
  );
}

.closing__inner {
  max-width: 36rem;
  margin: 0 auto;
}

.closing h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
}

.closing p {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 1.0625rem;
}

/* —— Footer —— */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 1.75rem 1.25rem;
}

.site-footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer__copy {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.site-footer__links {
  display: flex;
  gap: 1.25rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.site-footer__links a:hover {
  color: var(--ink);
}

.site-footer__links a[aria-current="page"] {
  color: var(--ink);
  font-weight: 500;
}

/* —— Legal pages —— */
.legal {
  padding: clamp(2.5rem, 6vw, 4rem) 1.25rem clamp(4rem, 10vw, 6rem);
}

.legal__inner {
  max-width: 40rem;
  margin: 0 auto;
}

.legal__eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.legal h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.legal__updated {
  margin: 0 0 2rem;
  font-size: 0.9375rem;
  color: var(--muted);
}

.legal h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.legal h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.legal p,
.legal li {
  font-size: 1rem;
  color: var(--ink);
  line-height: 1.65;
}

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

.legal ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.legal li {
  margin-bottom: 0.4rem;
  color: var(--muted);
}

.legal a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal a:hover {
  color: var(--ink);
}

/* —— Scroll reveal —— */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .hero-animate {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__image {
    transition: none;
  }

  .store-btn:hover {
    transform: none;
  }
}

/* —— Mobile store buttons —— */
@media (max-width: 480px) {
  .store-buttons {
    width: 100%;
    flex-direction: column;
    align-items: center;
  }

  .store-btn__badge--apple {
    height: 44px;
  }

  .store-btn__badge--google {
    height: 66px;
  }

  .site-nav {
    gap: 1rem;
    font-size: 0.875rem;
  }
}