/* ──────────────────────────────────────────────────────────────────────
   Endured — endured.app
   Cream paper. Achromatic palette. Quiet typography.
   ────────────────────────────────────────────────────────────────────── */

:root {
  /* Palette — mirrors the app's Bone-to-Iron stages */
  --paper:        #FAF5EC;   /* page background; matches the app */
  --paper-deep:   #F0E6CB;   /* subtle inset, used for screenshot frames */
  --graphite:     #2A2926;   /* primary text */
  --slate:        #7A7567;   /* secondary text */
  --hairline:     rgba(122, 117, 103, 0.18);

  /* Type scale */
  --serif: 'Fraunces', Georgia, serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  /* Layout */
  --max-content: 720px;       /* prose pages */
  --max-wide:    1080px;      /* hero, screen grid */
  --gutter:      24px;
}

/* ───────────────────── Reset / base ───────────────────── */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--graphite);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--graphite);
  text-decoration: underline;
  text-decoration-color: var(--hairline);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s ease;
}
a:hover { text-decoration-color: var(--graphite); }

p { margin: 0 0 1.2em 0; }
em { font-style: italic; }

/* ───────────────────── Header ───────────────────── */

.site-header {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 28px var(--gutter) 0;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.brand {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--graphite);
}

.brand-tag {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--slate);
  letter-spacing: 0.01em;
}

/* ───────────────────── Main containers ───────────────────── */

main {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

main.prose {
  max-width: var(--max-content);
}

main > section {
  padding: 80px 0;
  border-bottom: 1px solid var(--hairline);
}
main > section:first-child { padding-top: 80px; }
main > section:last-child  { border-bottom: none; }

/* ───────────────────── Hero ───────────────────── */

.hero {
  text-align: left;
  padding-top: 120px !important;
  padding-bottom: 100px !important;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(48px, 8vw, 92px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 32px 0;
  max-width: 18ch;
}
.hero h1 em {
  font-style: italic;
  font-weight: 300;
}

.hero .lede {
  font-size: 20px;
  line-height: 1.55;
  color: var(--graphite);
  max-width: 56ch;
  margin: 0 0 40px 0;
}

.hero .coming-soon {
  font-size: 14px;
  color: var(--slate);
  letter-spacing: 0.02em;
  margin: 0;
}

/* ───────────────────── Section headings ───────────────────── */

main h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 0 0 32px 0;
}

main h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 12px 0;
  color: var(--graphite);
}

/* ───────────────────── The idea ───────────────────── */

.idea {
  max-width: 64ch;
}

.idea p {
  font-size: 19px;
  line-height: 1.65;
}

/* ───────────────────── The app — screen grid ───────────────────── */

.screens-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 12px;
}

.screens-grid figure {
  margin: 0;
}

.screens-grid img {
  width: 100%;
  border-radius: 28px;
  background: var(--paper-deep);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.06),
    0 12px 32px rgba(42, 41, 38, 0.08);
}

.screens-grid figcaption {
  margin-top: 18px;
  font-size: 14px;
  color: var(--slate);
  line-height: 1.5;
  font-style: normal;
}
.screens-grid figcaption em {
  font-style: italic;
  color: var(--graphite);
}

/* ───────────────────── Also — numbered features ───────────────────── */

.also-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin: 64px 0;
}
.also-item:first-of-type { margin-top: 12px; }
.also-item:nth-child(odd of .also-item) {
  /* Alternate sides — even items put image on the right */
}
.also-item:nth-of-type(even) {
  direction: rtl;
}
.also-item:nth-of-type(even) > * {
  direction: ltr;
}

.also-item img {
  width: 100%;
  border-radius: 24px;
  background: var(--paper-deep);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.06),
    0 12px 32px rgba(42, 41, 38, 0.08);
}

.also-text {
  /* the text column */
}

.also-num {
  display: block;
  font-family: var(--serif);
  font-size: 13px;
  color: var(--slate);
  letter-spacing: 0.18em;
  margin-bottom: 12px;
}

.also-text p {
  font-size: 17px;
  line-height: 1.6;
  color: var(--graphite);
  margin: 0;
}

/* ───────────────────── Made by ───────────────────── */

.madeby {
  max-width: 60ch;
}

.madeby p {
  font-size: 17px;
  line-height: 1.65;
  color: var(--graphite);
}

/* ───────────────────── Prose pages (privacy, support) ───────────────────── */

main.prose h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 80px 0 12px 0;
  color: var(--graphite);
}

main.prose .updated {
  font-size: 13px;
  color: var(--slate);
  margin-bottom: 48px;
}

main.prose h2 {
  /* override the small-caps header style for prose pages */
  font-family: var(--serif);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--graphite);
  margin: 56px 0 16px 0;
}

main.prose h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 18px;
  margin: 36px 0 8px 0;
}

main.prose p {
  font-size: 17px;
  line-height: 1.7;
  color: var(--graphite);
}

main.prose {
  padding-bottom: 100px;
}

/* ───────────────────── Footer ───────────────────── */

.site-footer {
  border-top: 1px solid var(--hairline);
  margin-top: 0;
}

.footer-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 32px var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--slate);
}

.site-footer p { margin: 0; }

.site-footer nav {
  display: flex;
  gap: 24px;
}

.site-footer a {
  color: var(--slate);
  text-decoration: none;
}
.site-footer a:hover {
  text-decoration: underline;
  text-decoration-color: var(--slate);
  text-underline-offset: 3px;
}

/* ───────────────────── Fade-in on scroll ───────────────────── */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
  /* will-change keeps the transition smooth on long pages without
     leaving compositor layers around forever; we drop it once visible. */
  will-change: opacity, transform;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
  will-change: auto;
}

@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .fade-in.visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ───────────────────── Responsive ───────────────────── */

@media (max-width: 800px) {
  body { font-size: 16px; }

  .hero {
    padding-top: 80px !important;
    padding-bottom: 64px !important;
  }
  .hero .lede { font-size: 18px; }

  main > section { padding: 56px 0; }

  .screens-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .also-item {
    grid-template-columns: 1fr;
    gap: 24px;
    margin: 56px 0;
  }
  .also-item:nth-of-type(even) { direction: ltr; }

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

@media (max-width: 520px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding-top: 20px;
  }
  .brand-tag { font-size: 12px; }
}