/* Postpone It website. Tokens mirror the app's "Calm paper" palette (DESIGN.md §3). */
:root {
  color-scheme: light dark;
  --canvas: #F7F3EC;
  --wash: #FBF3E7;
  --surface: #FFFFFF;
  --text: #201C18;
  --text-2: #6C6863;
  --separator: #DBD7D0;
  --accent: #B25F00;
  --accent-text: #944E00;
  --accent-tint: #FFE8D7;
  --orb-1: #FFE8D7;
  --orb-2: #FFD2AC;
  --shadow: 0 2px 8px rgba(40, 24, 8, 0.06), 0 8px 24px rgba(40, 24, 8, 0.04);
  --icon-shadow: 0 2px 8px rgba(40, 24, 8, 0.08), 0 18px 40px rgba(40, 24, 8, 0.14);
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #100E0B;
    --wash: #1A1410;
    --surface: #1B1916;
    --text: #F0ECE8;
    --text-2: #B4B0AC;
    --separator: #54514D;
    --accent: #F5A15E;
    --accent-text: #FEB073;
    --accent-tint: #3E2005;
    --orb-1: #3E2005;
    --orb-2: #5C3410;
    --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 24px rgba(0, 0, 0, 0.35);
    --icon-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
  }
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(to bottom, var(--wash), var(--canvas) 24rem) no-repeat, var(--canvas);
  color: var(--text);
  font: 400 1.0625rem/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent-text); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }

h1, h2, h3, .subtitle, .availability { text-wrap: balance; }
p, li { text-wrap: pretty; }

/* Japanese and Chinese: no line may start with a closing mark or a long-vowel sign; Japanese wraps at phrases. */
:lang(ja), :lang(zh-Hans), :lang(zh-Hant) { line-break: strict; }
:lang(ja) { word-break: auto-phrase; }

a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* ---------- Landing ---------- */

.hero {
  position: relative;
  isolation: isolate;
  max-width: 40rem;
  margin: 0 auto;
  padding: clamp(2rem, 8vh, 5rem) 1.25rem 2.5rem;
  text-align: center;
}

.orb {
  position: absolute;
  z-index: -1;
  left: 50%;
  top: clamp(1rem, 6vh, 3.5rem);
  width: min(26rem, 90vw);
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, var(--orb-2), var(--orb-1) 55%, transparent);
  opacity: 0.6;
  filter: blur(28px);
  pointer-events: none;
}

.app-icon {
  display: block;
  width: 128px;
  height: 128px;
  margin: 0 auto;
  border-radius: 28.5px;
  box-shadow: var(--icon-shadow);
}

.hero h1 {
  margin: 1.75rem 0 0.5rem;
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
}

.subtitle {
  margin: 0 0 1.25rem;
  font-size: clamp(1.25rem, 3.6vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--accent-text);
}

.lead {
  max-width: 32rem;
  margin: 0 auto;
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--text-2);
}

.availability {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.6rem 1.15rem;
  border-radius: 999px;
  background: var(--accent-tint);
  color: var(--accent-text);
  font-size: 0.9375rem;
  font-weight: 600;
}

.contrast {
  max-width: 38rem;
  margin: 0.5rem auto 2.5rem;
  padding: 0 1.25rem;
  text-align: center;
}
.contrast h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.375rem, 4.4vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
}
.contrast p { margin: 0; color: var(--text-2); font-size: 1.0625rem; line-height: 1.6; }

.points {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  max-width: 60rem;
  width: 100%;
  margin: 0.5rem auto 0;
  padding: 0 1.25rem;
}

.point {
  padding: 1.5rem;
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.point h2 { margin: 0 0 0.4rem; font-size: 1.125rem; letter-spacing: -0.01em; }
.point p { margin: 0; font-size: 1rem; line-height: 1.5; color: var(--text-2); }

.promise {
  max-width: 36rem;
  margin: 3rem auto 0;
  padding: 0 1.25rem;
  text-align: center;
  color: var(--text-2);
}
.promise strong { color: var(--text); font-weight: 600; }

/* ---------- Documents: privacy, support ---------- */

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  width: 100%;
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}
.brand img { width: 28px; height: 28px; border-radius: 7px; }

.lang { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; font-size: 0.9375rem; }
.lang a { color: var(--text-2); text-decoration: none; }
.lang a:hover { color: var(--text); }
.lang a[aria-current="page"] { color: var(--text); font-weight: 600; }

.doc {
  width: 100%;
  max-width: 44rem;
  margin: 0 auto;
  padding: 2.25rem 1.25rem 0;
}

.doc h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(2rem, 6.5vw, 2.75rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.meta { margin: 0 0 1.75rem; color: var(--text-2); }

.doc h2 { margin: 2.25rem 0 0.5rem; font-size: 1.25rem; line-height: 1.3; letter-spacing: -0.01em; }
.doc h3 { margin: 1.75rem 0 0.35rem; font-size: 1.0625rem; line-height: 1.4; }
.doc p { margin: 0 0 0.9rem; }
.doc ul { margin: 0 0 0.9rem; padding-inline-start: 1.25rem; }
.doc li { margin: 0.35rem 0; }

.card {
  margin: 0 0 1rem;
  padding: 1.25rem 1.5rem;
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.card h2 { margin-top: 0; }
.card ul { margin-bottom: 0; }

.contact-mail { font-size: 1.1875rem; font-weight: 600; }

.note {
  margin: -1rem 0 1.5rem;
  font-size: 0.9375rem;
  color: var(--text-2);
}

/* ---------- Language menu (no script: <details>) ---------- */

.landing-header {
  display: flex;
  justify-content: flex-end;
  width: 100%;
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 0;
}

.lang-menu { position: relative; }

.lang-menu summary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--separator);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 0.9375rem;
  list-style: none;
  cursor: pointer;
  user-select: none;
}
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover, .lang-menu[open] summary { color: var(--text); }

.lang-menu ul {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + 0.5rem);
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr));
  gap: 0.125rem;
  width: min(34rem, calc(100vw - 2.5rem));
  max-height: min(70vh, 32rem);
  overflow-y: auto;
  margin: 0;
  padding: 0.5rem;
  list-style: none;
  border: 1px solid var(--separator);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: 0 12px 40px rgba(40, 24, 8, 0.16);
}

.lang-menu a {
  display: block;
  padding: 0.45rem 0.7rem;
  border-radius: 10px;
  color: var(--text);
  font-size: 0.9375rem;
  text-decoration: none;
}
.lang-menu a:hover { background: var(--accent-tint); }
.lang-menu a[aria-current="page"] { background: var(--accent-tint); color: var(--accent-text); font-weight: 600; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Footer ---------- */

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  width: 100%;
  max-width: 44rem;
  margin: auto auto 0;
  padding: 2rem 1.25rem 2.5rem;
  font-size: 0.9375rem;
  color: var(--text-2);
}
.site-footer::before {
  content: "";
  flex-basis: 100%;
  height: 1px;
  margin-bottom: 1.25rem;
  background: var(--separator);
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }
.site-footer p { margin: 0; }

.landing .site-footer { max-width: 60rem; margin-top: auto; padding-top: 4rem; }
.landing main { width: 100%; }