:root {
  color-scheme: light;
  --paper: #f7f0e5;
  --paper-deep: #eee4d6;
  --ink: #3d2d24;
  --muted: #75645a;
  --line: #cdbfaf;
  --accent: #c85f37;
  --accent-dark: #a94728;
  --disabled: #d8c9ba;
  --focus: #1f607d;
  --radius-sm: 12px;
  --radius-md: 18px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --font-serif: "Songti SC", "STSong", "SimSun", serif;
  --font-sans: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scrollbar-width: none;
}

html::-webkit-scrollbar {
  display: none;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at 18% 12%, rgb(255 255 255 / 55%), transparent 28%),
    radial-gradient(circle at 88% 82%, rgb(214 173 136 / 12%), transparent 30%),
    var(--paper);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: 0.22;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.11'/%3E%3C/svg%3E");
}

button {
  color: inherit;
  font: inherit;
}

button:focus-visible,
a:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 10;
  padding: var(--space-2) var(--space-3);
  color: #fff;
  background: var(--ink);
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-shell {
  width: min(100%, 440px);
  min-height: 100svh;
  margin: 0 auto;
  background: var(--paper);
}

.screen {
  min-height: 100svh;
  padding: max(var(--space-5), env(safe-area-inset-top)) var(--space-5)
    max(var(--space-5), env(safe-area-inset-bottom));
}

.home-screen {
  overflow-x: clip;
  padding-top: max(2.25rem, env(safe-area-inset-top));
  padding-bottom: var(--space-2);
}

[hidden] {
  display: none !important;
}

.topbar,
.result-topbar {
  display: grid;
  align-items: center;
  min-height: 44px;
}

.topbar {
  position: relative;
  z-index: 1;
  grid-template-columns: 1fr auto;
}

.result-topbar {
  grid-template-columns: 44px 1fr auto;
  gap: var(--space-2);
}

.brand {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 6vw, 1.8rem);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.topbar .brand {
  font-weight: 500;
}

.result-topbar .brand {
  font-size: 1.25rem;
  text-align: center;
}

.date {
  color: var(--muted);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.hero-visual {
  position: relative;
  height: min(83vw, 365px);
  margin: -0.75rem calc(var(--space-5) * -1) -0.35rem;
  overflow: hidden;
}

.hero-reference {
  position: absolute;
  top: calc(min(100vw, 440px) * -0.2);
  left: 0;
  display: block;
  width: 100%;
  height: auto;
  mix-blend-mode: darken;
  -webkit-mask-image: radial-gradient(
    ellipse 72% 64% at 50% 50%,
    #000 64%,
    rgb(0 0 0 / 88%) 78%,
    transparent 100%
  );
  mask-image: radial-gradient(
    ellipse 72% 64% at 50% 50%,
    #000 64%,
    rgb(0 0 0 / 88%) 78%,
    transparent 100%
  );
  animation: hero-breathe 14s ease-in-out infinite alternate;
}

@keyframes hero-breathe {
  from { transform: translate3d(-1px, 1px, 0) scale(1.002); }
  to { transform: translate3d(2px, -2px, 0) scale(1.012); }
}

.home-copy {
  margin-top: var(--space-4);
  text-align: center;
}

.home-copy h2 {
  max-width: none;
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 5.6vw, 1.45rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.home-copy p {
  margin: var(--space-2) 0 0;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 0.84rem;
  line-height: 1.5;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.mood-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 7px;
  margin-top: var(--space-3);
}

.mood-button {
  position: relative;
  min-width: 0;
  min-height: 50px;
  padding: 0.4rem 0.15rem;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.04em;
  background: rgb(255 252 247 / 28%);
  border: 1px solid #d7cabb;
  border-radius: 9px;
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 38%);
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease,
    transform 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.mood-button:hover {
  border-color: #a89483;
  background: rgb(255 252 247 / 92%);
}

.mood-button:active {
  transform: scale(0.97);
}

.mood-button[aria-pressed="true"] {
  color: var(--ink);
  background: color-mix(in srgb, var(--mood-color, var(--ink)) 34%, #fffaf4);
  border-color: var(--mood-color, var(--ink));
  box-shadow: 0 3px 10px rgb(61 45 36 / 14%),
    0 0 0 2px rgb(255 250 244 / 75%);
  transform: translateY(-1px);
}

.home-actions {
  margin-top: var(--space-4);
  padding-bottom: max(var(--space-2), env(safe-area-inset-bottom));
}

.selection-status {
  min-height: 1.25rem;
  margin: 0 0 var(--space-2);
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-align: center;
}

.primary-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 56px;
  padding: 0 var(--space-5);
  color: #fffaf5;
  font-family: var(--font-serif);
  font-size: 1.22rem;
  letter-spacing: 0.08em;
  background: var(--accent);
  border: 1px solid transparent;
  border-radius: 14px;
  box-shadow: 0 6px 18px rgb(168 71 40 / 22%);
  cursor: pointer;
  transition: background-color 160ms ease, transform 160ms ease,
    box-shadow 160ms ease;
}

.primary-button:hover:not(:disabled) {
  background: var(--accent-dark);
}

.primary-button:active:not(:disabled) {
  transform: translateY(1px);
}

.primary-button:disabled {
  color: #fffaf5;
  background: var(--accent);
  border-color: transparent;
  opacity: 0.72;
  cursor: not-allowed;
}

.icon-button {
  display: inline-grid;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  font-size: 1.6rem;
  background: transparent;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}

.emotion-card {
  margin-top: var(--space-1);
}

.result-art {
  display: block;
  height: clamp(370px, 54svh, 520px);
  margin: 0 calc(var(--space-5) * -1);
  width: calc(100% + var(--space-5) * 2);
  background: transparent;
}

.result-copy {
  margin-top: calc(var(--space-3) * -1);
  text-align: center;
}

.result-copy h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 11vw, 3.25rem);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.result-copy h2:focus {
  outline: none;
}

.result-copy > p:not(.result-tags) {
  margin: var(--space-2) auto 0;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.7;
}

.result-tags {
  margin: var(--space-3) 0 0;
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.result-actions {
  margin-top: var(--space-5);
  text-align: center;
}

.text-button {
  min-height: 44px;
  padding: 0 var(--space-3);
  color: var(--ink);
  background: transparent;
  border: 0;
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 0.3em;
  cursor: pointer;
}

.secondary-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.result-closing {
  margin: var(--space-5) 0 0;
  color: var(--muted);
  font-family: var(--font-serif);
  letter-spacing: 0.05em;
}

.app-status {
  position: fixed;
  right: var(--space-4);
  bottom: max(var(--space-4), env(safe-area-inset-bottom));
  left: var(--space-4);
  z-index: 8;
  width: min(calc(100% - 2rem), 380px);
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  color: #fffaf5;
  font-size: 0.92rem;
  line-height: 1.55;
  text-align: center;
  background: rgb(61 45 36 / 94%);
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgb(61 45 36 / 18%);
}

@media (max-width: 350px) {
  .screen {
    padding-right: var(--space-4);
    padding-left: var(--space-4);
  }

  .hero-visual {
    height: min(83vw, 365px);
    margin-right: calc(var(--space-4) * -1);
    margin-left: calc(var(--space-4) * -1);
  }

  .result-art {
    width: calc(100% + var(--space-4) * 2);
    margin-right: calc(var(--space-4) * -1);
    margin-left: calc(var(--space-4) * -1);
  }

  .mood-button {
    min-height: 48px;
    font-size: 0.9rem;
    padding: 0.35rem 0.1rem;
  }
}

@media (min-width: 768px) {
  body {
    background-color: var(--paper-deep);
  }

  .app-shell {
    border-right: 1px solid rgb(106 83 67 / 10%);
    border-left: 1px solid rgb(106 83 67 / 10%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}