/* Serena Paints site. Colors and the layered-card look follow the app's "Paper Studio"
   design (SerenaPaints repo: docs/UI_REDESIGN.md §2.3). Light only, like the app. */

:root {
  color-scheme: light;
  --desk: #F5EBD8;
  --desk-near: #EEDDBF;
  --desk-edge: #D9C29C;
  --card: #FFF6E6;
  --card-edge: #E2CFAE;
  --ink: #3B2A2E;
  --ink-soft: #6B5458;
  --serena: #EE7656;
  --home: #FFD772;
  --home-edge: #E5B84A;
  --book: #FFC096;
  --book-edge: #E89E70;
  --draw: #A9D8F5;
  --draw-edge: #7FB8DF;
  --gallery: #A6DEC2;
  --gallery-edge: #7FC2A2;
  --font: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-zh: ui-rounded, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
}

/* Every page carries English and Chinese; lang.js picks one. Without it both show. */
html[data-lang="en"] [data-lang="zh"],
html[data-lang="zh"] [data-lang="en"] {
  display: none;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font: 17px/1.65 var(--font);
}

:lang(zh) { font-family: var(--font-zh); }

a {
  color: var(--ink);
  text-decoration-color: var(--serena);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:focus-visible {
  outline: 3px solid var(--draw-edge);
  outline-offset: 2px;
  border-radius: 6px;
}

img, svg { max-width: 100%; }

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

/* A sheet of card stock: a hard edge underneath instead of a soft shadow. */
.card {
  background: var(--card);
  border: 1.5px solid var(--card-edge);
  border-radius: 18px;
  box-shadow: 0 3px 0 var(--card-edge);
  padding: 20px;
}

.pill {
  display: inline-block;
  background: var(--card);
  border: 1.5px solid var(--card-edge);
  border-radius: 999px;
  box-shadow: 0 2px 0 var(--card-edge);
  padding: 6px 14px;
  font-weight: 600;
  line-height: 1.3;
  text-decoration: none;
  transition: transform 80ms ease-out, box-shadow 80ms ease-out;
}

/* Pressed paper goes flat, as the app's buttons do. */
a.pill:active {
  transform: translateY(2px);
  box-shadow: none;
}

/* Header */

.top-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
}

.brand { min-width: 0; }

.brand > span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 2px 0 var(--desk-edge);
}

.langs {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.langs a { font-size: 0.9rem; }

@media (max-width: 400px) {
  .brand { font-size: 1rem; gap: 8px; }
  .langs { gap: 6px; }
  .langs a { padding: 6px 10px; }
}

/* The chosen language: a different card and a check mark, not color alone. */
.langs a[aria-current="true"] {
  background: var(--home);
  border-color: var(--home-edge);
  box-shadow: 0 2px 0 var(--home-edge);
}

.langs a[aria-current="true"]::before { content: "\2713\00A0"; }

/* Home */

.hero {
  display: grid;
  gap: 20px;
  align-items: center;
  padding: 24px 0 40px;
}

.hero .mascot {
  width: 150px;
  height: auto;
  justify-self: center;
}

.wordmark {
  margin: 0;
  font-size: clamp(2.4rem, 9vw, 3.6rem);
  line-height: 1.1;
  font-weight: 700;
}

.wordmark:lang(zh) { letter-spacing: 0.06em; }

.swoosh {
  display: block;
  width: min(280px, 70%);
  height: 18px;
  margin: 6px 0 18px;
}

.tagline {
  margin: 0 0 12px;
  font-size: clamp(1.3rem, 4.5vw, 1.7rem);
  font-weight: 700;
  line-height: 1.3;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--ink-soft);
  font-weight: 600;
}

.lede { margin: 0 0 20px; max-width: 36em; }

.soon {
  display: inline-block;
  margin: 0;
  background: var(--home);
  border: 1.5px solid var(--home-edge);
  border-radius: 14px;
  box-shadow: 0 3px 0 var(--home-edge);
  padding: 8px 16px;
  font-weight: 700;
}

.cards {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}

.cards h2, .promise h2 {
  margin: 0 0 8px;
  font-size: 1.2rem;
  line-height: 1.35;
}

.cards p { margin: 0; }

.card.book { background: var(--book); border-color: var(--book-edge); box-shadow: 0 3px 0 var(--book-edge); }
.card.draw { background: var(--draw); border-color: var(--draw-edge); box-shadow: 0 3px 0 var(--draw-edge); }
.card.gallery { background: var(--gallery); border-color: var(--gallery-edge); box-shadow: 0 3px 0 var(--gallery-edge); }

.promise ul {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.promise li {
  position: relative;
  padding-left: 1.6em;
}

.promise li + li { margin-top: 8px; }

.promise li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--ink);
  font-weight: 700;
}

.promise p { margin: 0; }

@media (min-width: 720px) {
  .wrap { padding-left: 24px; padding-right: 24px; }
  .hero {
    grid-template-columns: 1fr 230px;
    gap: 40px;
    padding: 48px 0 64px;
  }
  .hero .mascot { width: 230px; order: 2; }
  .cards { grid-template-columns: repeat(3, 1fr); }
}

/* Privacy, support */

.sheet {
  max-width: 780px;
  margin: 8px auto 0;
  padding: 0 16px;
}

.legal { padding: 24px 20px 28px; }

.legal + .legal { margin-top: 24px; }

.legal h1 {
  margin: 0 0 4px;
  font-size: clamp(1.7rem, 6vw, 2.2rem);
  line-height: 1.2;
}

.legal h2 {
  margin: 28px 0 8px;
  font-size: 1.2rem;
  line-height: 1.35;
}

.legal ul { padding-left: 1.3em; margin: 0; }

.legal li + li { margin-top: 6px; }

.legal p { margin: 0 0 12px; }

.meta { color: var(--ink-soft); }

.contact {
  margin: 16px 0 8px;
  padding: 16px 18px;
  background: var(--home);
  border-color: var(--home-edge);
  box-shadow: 0 3px 0 var(--home-edge);
}

.contact p { margin: 0; }

.contact .address {
  font-size: 1.15rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

details {
  border-top: 1.5px solid var(--card-edge);
  padding: 12px 0;
}

details:last-of-type { border-bottom: 1.5px solid var(--card-edge); }

summary {
  font-weight: 700;
  cursor: pointer;
}

details > p { margin: 8px 0 0; }

@media (min-width: 720px) {
  .sheet { padding-left: 24px; padding-right: 24px; }
  .legal { padding: 36px 40px 40px; }
}

/* Footer */

.foot {
  margin-top: 48px;
  padding: 24px 0 36px;
  background: var(--desk-near);
  border-top: 1.5px solid var(--desk-edge);
  font-size: 0.95rem;
}

.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin-bottom: 8px;
}

.foot p { margin: 0; color: var(--ink-soft); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}