/* Meowltiverse landing page. Palette and radii follow docs/visual-style.md
   (client/assets/themes/worldlines/tokens.json): one same-hue shade per colour,
   no outlines, no gradient highlights, warm orange only on things that can be tapped. */

:root {
  --grass: #a8d460;
  --grass-art: #9ecd59;       /* the launch art's own background */
  --grass-art-shade: #86b14a;
  --paper: #fcf0d8;
  --paper-shade: #e6cc9e;
  --white: #fffcf3;
  --ink: #3d2b1f;
  --ink-soft: #735a3f;        /* only on paper */
  --orange: #f99a2a;
  --orange-shade: #de6c24;
  --overlay: rgb(61 43 31 / 0.7);
  --r-panel: 32px;
  --r-button: 48px;
  --r-chip: 20px;
  --press: 6px;
  --font: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "PingFang SC",
    "HarmonyOS Sans SC", "HarmonyOS Sans", "MiSans", "Noto Sans SC", "Noto Sans CJK SC",
    "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--grass);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1,
h2,
h3,
p,
ul,
figure {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 4px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left));
  padding-right: max(16px, env(safe-area-inset-right));
}

@media (min-width: 420px) {
  .wrap {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
  }
}

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  justify-content: flex-end;
  padding-top: max(12px, env(safe-area-inset-top));
  padding-bottom: 4px;
}

.lang {
  display: flex;
  gap: 2px;
  padding: 4px;
  border-radius: var(--r-chip);
  background: var(--paper);
}

.lang-btn {
  min-width: 44px;
  min-height: 32px;
  padding: 0 12px;
  border: 0;
  border-radius: 16px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.lang-btn[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
  cursor: default;
}

/* ---------- hero ---------- */

.hero {
  display: grid;
  grid-template-areas:
    "title"
    "art"
    "dl";
  gap: 20px;
  padding-top: 8px;
  padding-bottom: 32px;
}

.hero-title {
  grid-area: title;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.app-icon {
  flex: none;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  box-shadow: 0 4px 0 var(--grass-art-shade);
}

h1 {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

h1 .name {
  font-size: clamp(32px, 9vw, 56px);
  font-weight: 900;
  letter-spacing: 0.02em;
}

/* "Meowltiverse" is one long word that cannot wrap; keep it inside 320px screens. */
html[lang="en"] h1 .name {
  font-size: clamp(26px, 7.2vw, 52px);
  letter-spacing: 0;
}

.hero-title > div {
  min-width: 0;
  overflow-wrap: break-word;
}

h1 .name-alt {
  margin-top: 4px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.lead {
  margin-top: 10px;
  max-width: 30em;
  font-size: 16px;
  font-weight: 600;
}

.hero-art {
  grid-area: art;
  justify-self: center;
  width: min(100%, 42vh);
  width: min(100%, 38svh);
  min-width: min(100%, 200px);
}

.hero-art img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  border-radius: var(--r-panel);
  background: var(--grass-art);
  box-shadow: 0 8px 0 var(--grass-art-shade);
}

.hero-art figcaption {
  margin-top: 14px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
}

/* ---------- downloads ---------- */

.downloads {
  grid-area: dl;
}

.dl-main {
  display: grid;
  gap: 16px;
}

@media (min-width: 560px) {
  .dl-main.is-pair {
    grid-template-columns: 1fr 1fr;
  }
}

.dl-meta,
.dl-hint {
  margin: 8px 16px 0;
  font-size: 13px;
  line-height: 1.5;
}

.dl-meta {
  margin-top: 12px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.dl-meta + .dl-hint {
  margin-top: 2px;
}

.dl-item > .btn + .dl-hint,
.dl-meta[hidden] + .dl-hint {
  margin-top: 18px;
}

.dl-stores {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- buttons ---------- */

.btn {
  --bg: var(--paper);
  --shade: var(--paper-shade);
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding: 10px 24px 10px 20px;
  border: 0;
  border-radius: var(--r-button);
  background: var(--bg);
  box-shadow: 0 var(--press) 0 var(--shade);
  color: var(--ink);
  font: inherit;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: transform 80ms ease-out, box-shadow 80ms ease-out;
}

.btn--primary {
  --bg: var(--orange);
  --shade: var(--orange-shade);
}

.btn--secondary {
  --bg: var(--paper);
  --shade: var(--paper-shade);
}

.btn:not(.is-disabled):active {
  transform: translateY(var(--press));
  box-shadow: 0 0 0 var(--shade);
}

.btn-icon {
  flex: none;
  width: 26px;
  height: 26px;
  fill: var(--ink);
}

.btn-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.25;
}

.btn-label {
  font-size: 17px;
  font-weight: 900;
}

.btn-sub {
  margin-top: 2px;
  font-size: 13px;
  font-weight: 700;
}

.btn--small {
  min-height: 54px;
  padding: 8px 16px 8px 14px;
  gap: 10px;
}

.btn--small .btn-icon {
  width: 20px;
  height: 20px;
}

.btn--small .btn-label {
  font-size: 15px;
}

.btn--small .btn-sub {
  font-size: 12px;
}

/* Not clickable yet: flat, no orange, no shade, a dark chip says why. */
.btn.is-disabled {
  background: rgb(252 240 216 / 0.5);
  box-shadow: none;
  cursor: not-allowed;
}

.btn.is-disabled .btn-sub {
  align-self: flex-start;
  margin-top: 4px;
  padding: 1px 10px;
  border-radius: var(--r-chip);
  background: var(--ink);
  color: var(--paper);
}

@media (hover: hover) {
  .btn:not(.is-disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 calc(var(--press) + 2px) 0 var(--shade);
  }

  .btn:not(.is-disabled):active {
    transform: translateY(var(--press));
    box-shadow: 0 0 0 var(--shade);
  }

  .lang-btn[aria-pressed="false"]:hover {
    background: var(--paper-shade);
  }
}

/* ---------- sections ---------- */

.section {
  padding-top: 40px;
  padding-bottom: 40px;
}

.section h2 {
  max-width: 20em;
  font-size: clamp(24px, 6.4vw, 36px);
  font-weight: 900;
  line-height: 1.3;
}

.section-lead {
  margin-top: 10px;
  max-width: 34em;
  font-weight: 600;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 24px;
  margin-top: 28px;
}

.card {
  padding: 24px 24px 28px;
  border-radius: var(--r-panel);
  background: var(--paper);
  box-shadow: 0 8px 0 var(--paper-shade);
}

.card-art {
  width: 160px;
  height: 96px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 20px;
  font-weight: 900;
  line-height: 1.35;
}

.card p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

/* A marble bouncing down the pegs into the jackpot pocket. */
.marble {
  animation: marble-drop 3.2s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

@keyframes marble-drop {
  0% { transform: translate(0, -16px); opacity: 0; }
  8% { transform: translate(0, 0); opacity: 1; }
  22% { transform: translate(-12px, 24px); }
  36% { transform: translate(0, 42px); }
  50% { transform: translate(10px, 50px); }
  62%, 86% { transform: translate(4px, 66px); opacity: 1; }
  100% { transform: translate(4px, 66px); opacity: 0; }
}

.buddies {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 28px;
}

.buddy {
  width: calc((100% - 32px) / 3);
  padding: 14px 10px 18px;
  border-radius: var(--r-panel);
  background: var(--paper);
  box-shadow: 0 6px 0 var(--paper-shade);
  text-align: center;
}

@media (min-width: 720px) {
  .buddies {
    gap: 20px;
    flex-wrap: nowrap;
  }

  .buddy {
    width: auto;
    flex: 1 1 0;
    padding: 20px 14px 22px;
  }
}

.portrait {
  width: 88%;
  margin: 0 auto 10px;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 50%;
  background: var(--el);
  box-shadow: 0 5px 0 var(--el-shade);
}

.portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translateY(6%);
}

.buddy h3 {
  font-size: 17px;
  font-weight: 900;
  line-height: 1.3;
}

.buddy p {
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
}

/* ---------- footer ---------- */

.footer {
  margin-top: 24px;
  padding-top: 36px;
  padding-bottom: max(36px, env(safe-area-inset-bottom));
  border-radius: var(--r-panel) var(--r-panel) 0 0;
  background: var(--ink);
  color: var(--paper);
  font-size: 13px;
  line-height: 1.7;
}

.footer-note {
  max-width: 40em;
}

.footer-copy {
  margin-top: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

/* ---------- WeChat / QQ hint ---------- */

.wx-tip {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding: max(8px, env(safe-area-inset-top)) 16px 16px;
  background: var(--overlay);
}

.wx-tip[hidden] {
  display: none;
}

.wx-arrow {
  width: 80px;
  height: 80px;
  margin-right: 4px;
}

.wx-panel {
  align-self: stretch;
  max-width: 420px;
  margin: 8px 0 0 auto;
  padding: 24px;
  border-radius: var(--r-panel);
  background: var(--paper);
}

.wx-title {
  font-size: 19px;
  font-weight: 900;
  line-height: 1.4;
}

.wx-body {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 14px;
}

.wx-close {
  justify-content: center;
  width: 100%;
  margin-top: 20px;
  font-size: 16px;
  font-weight: 900;
}

/* ---------- wider screens ---------- */

@media (min-width: 880px) {
  .topbar {
    padding-top: 20px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 440px);
    grid-template-areas:
      "title art"
      "dl art";
    grid-template-rows: auto 1fr;
    column-gap: 64px;
    row-gap: 32px;
    padding-top: 24px;
    padding-bottom: 56px;
  }

  .app-icon {
    width: 88px;
    height: 88px;
    border-radius: 22px;
    box-shadow: 0 6px 0 var(--grass-art-shade);
  }

  .hero-title {
    gap: 20px;
    padding-top: 24px;
  }

  .lead {
    font-size: 19px;
  }

  .hero-art {
    width: 100%;
    min-width: 0;
    align-self: start;
  }

  .section {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .footer {
    margin-top: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .marble {
    animation: none;
    transform: translate(4px, 66px);
  }

  .btn {
    transition: none;
  }
}