/* Demo chrome — sits above background layers */

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family:
    "Segoe UI",
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    system-ui,
    sans-serif;
  line-height: 1.6;
}

.app {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem 3rem;
}

.panel {
  width: min(560px, 100%);
  padding: 1.75rem 1.5rem 1.5rem;
  border-radius: 1.35rem;
  background: rgba(255, 252, 246, 0.72);
  border: 1px solid rgba(140, 110, 70, 0.12);
  box-shadow: 0 24px 80px rgba(60, 40, 20, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition:
    background 400ms ease,
    border-color 400ms ease,
    color 400ms ease,
    box-shadow 400ms ease;
}

body[data-home-bg="legacy"] .panel {
  background: rgba(255, 250, 242, 0.55);
  border-color: rgba(130, 100, 60, 0.16);
  box-shadow: 0 20px 60px rgba(80, 55, 30, 0.1);
}

body[data-home-bg="dusk"] .panel {
  background: rgba(40, 22, 38, 0.62);
  border-color: rgba(255, 160, 140, 0.16);
  box-shadow: 0 24px 80px rgba(10, 4, 12, 0.45);
  color: #f8eee8;
}

body[data-home-bg="night"] .panel {
  background: rgba(12, 18, 36, 0.68);
  border-color: rgba(140, 170, 255, 0.14);
  box-shadow: 0 24px 80px rgba(0, 4, 16, 0.5);
  color: #eaf0fa;
}

body[data-home-bg="firefly"] .panel {
  background: rgba(10, 18, 12, 0.68);
  border-color: rgba(160, 220, 100, 0.14);
  box-shadow: 0 24px 80px rgba(0, 8, 4, 0.5);
  color: #eaf4e4;
}

.eyebrow {
  margin: 0 0 0.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.55;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.55rem, 4vw, 1.9rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.25;
}

.lead {
  margin: 0 0 1.35rem;
  font-size: 0.95rem;
  opacity: 0.78;
}

/* Tabs — five modes along the day arc */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
  padding: 0.35rem;
  border-radius: 1.1rem;
  background: rgba(80, 55, 30, 0.06);
  transition: background 400ms ease;
}

body[data-home-bg="dusk"] .tabs,
body[data-home-bg="night"] .tabs,
body[data-home-bg="firefly"] .tabs {
  background: rgba(255, 255, 255, 0.06);
}

.tab {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 0.55rem 0.7rem;
  flex: 1 1 auto;
  min-width: 3.6rem;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  color: inherit;
  background: transparent;
  cursor: pointer;
  transition:
    background 200ms ease,
    color 200ms ease,
    transform 200ms ease,
    box-shadow 200ms ease;
}

.tab:hover {
  background: rgba(196, 90, 36, 0.1);
  color: #c45a24;
}

body[data-home-bg="dusk"] .tab:hover {
  background: rgba(255, 140, 100, 0.14);
  color: #ffc4a8;
}

body[data-home-bg="night"] .tab:hover {
  background: rgba(140, 170, 255, 0.14);
  color: #c8d8ff;
}

body[data-home-bg="firefly"] .tab:hover {
  background: rgba(160, 220, 90, 0.14);
  color: #d4f0a0;
}

.tab:focus-visible {
  outline: 2px solid #c45a24;
  outline-offset: 2px;
}

body[data-home-bg="dusk"] .tab:focus-visible {
  outline-color: #ff9a70;
}

body[data-home-bg="night"] .tab:focus-visible {
  outline-color: #8aa8ff;
}

body[data-home-bg="firefly"] .tab:focus-visible {
  outline-color: #a8d860;
}

.tab.is-active {
  background: #fffaf3;
  color: #b45309;
  box-shadow: 0 4px 16px rgba(80, 55, 30, 0.1);
}

body[data-home-bg="dusk"] .tab.is-active {
  background: rgba(255, 200, 170, 0.18);
  color: #ffd8c4;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

body[data-home-bg="night"] .tab.is-active {
  background: rgba(160, 190, 255, 0.16);
  color: #e8f0ff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

body[data-home-bg="firefly"] .tab.is-active {
  background: rgba(180, 230, 100, 0.16);
  color: #e8f8c8;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.meta {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.meta li {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  font-size: 0.88rem;
}

.meta .label {
  flex: 0 0 4.5rem;
  font-weight: 600;
  opacity: 0.55;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.meta .value {
  flex: 1;
  opacity: 0.9;
}

.hint {
  margin: 1.25rem 0 0;
  font-size: 0.8rem;
  opacity: 0.5;
}

.footer {
  margin-top: 1.5rem;
  font-size: 0.78rem;
  opacity: 0.45;
  text-align: center;
}

.footer a {
  color: inherit;
}

.footer code {
  font-size: 0.85em;
}

@media (max-width: 480px) {
  .tabs {
    border-radius: 1rem;
  }

  .tab {
    border-radius: 0.75rem;
    font-size: 0.82rem;
    padding: 0.5rem 0.45rem;
  }
}