.viewer-world {
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(255, 196, 120, 0.08), transparent 30%),
    linear-gradient(180deg, #060909 0%, #0a1211 46%, #070808 100%);
}

.viewer-mobile-download {
  display: none;
}

.viewer-main {
  min-height: 100vh;
  padding: 116px 20px 28px;
}

.viewer-shell {
  width: min(var(--content-max), 100%);
  margin: 0 auto;
  display: grid;
  gap: 20px;
}

.viewer-copy {
  display: grid;
  gap: 14px;
}

.viewer-copy h1 {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  line-height: 0.92;
  max-width: 12ch;
}

.viewer-prompt {
  margin: 0;
  max-width: 70ch;
  color: var(--paper-soft);
  line-height: 1.7;
}

.viewer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.viewer-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.viewer-materials {
  overflow: hidden;
  border: 1px solid rgba(255, 226, 184, 0.13);
  border-radius: 18px;
  background: rgba(10, 13, 12, 0.62);
}

.viewer-materials summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  color: #ffe3be;
  font-weight: 800;
  cursor: pointer;
}

.viewer-materials summary span:last-child {
  color: rgba(246, 237, 220, 0.6);
  font-size: 0.86rem;
  font-weight: 600;
}

.viewer-material-list {
  display: grid;
  max-height: 280px;
  overflow: auto;
  border-top: 1px solid rgba(255, 226, 184, 0.1);
}

.viewer-material-list > div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 9px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--paper-soft);
  font-size: 0.88rem;
}

.viewer-material-list strong {
  color: #fff0da;
  font-variant-numeric: tabular-nums;
}

.viewer-material-copy {
  min-height: 38px;
  margin: 12px 16px 14px;
}

.viewer-toolbar .button {
  min-height: 44px;
}

.viewer-view-button.is-active {
  border-color: rgba(255, 196, 120, 0.4);
  background: rgba(255, 176, 90, 0.16);
  color: #ffe2ba;
}

.viewer-panel {
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(10, 15, 14, 0.78), rgba(8, 12, 12, 0.58));
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.viewer-status {
  min-height: 1.6em;
  color: rgba(255, 214, 174, 0.88);
  font-size: 0.95rem;
}

.viewer-frame-shell {
  position: relative;
  min-height: min(74vh, 980px);
  overflow: hidden;
  overscroll-behavior: contain;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  background: #101418;
}

.viewer-frame {
  width: 100%;
  height: min(74vh, 980px);
  display: block;
  border: 0;
  background: #101418;
  overscroll-behavior: contain;
}

@media (max-width: 900px) {
  .viewer-main {
    padding: 104px 16px 20px;
  }

  .viewer-frame-shell,
  .viewer-frame {
    min-height: 58vh;
    height: 58vh;
  }
}

@media (max-width: 640px) {
  .viewer-main {
    padding-bottom: 92px;
  }

  .viewer-mobile-download:not([hidden]) {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 16px;
    z-index: 45;
    display: inline-flex;
    min-height: 56px;
    border-radius: 18px;
    border-color: rgba(255, 226, 184, 0.26);
    background: linear-gradient(180deg, #ffbd67, #db7e37);
    color: #2a1307;
    box-shadow:
      inset 0 1px 0 rgba(255, 243, 219, 0.62),
      0 18px 36px rgba(0, 0, 0, 0.38);
  }

  .viewer-toolbar {
    gap: 10px;
  }

  .viewer-toolbar .button {
    width: 100%;
  }

  .viewer-panel {
    padding: 14px;
    border-radius: 22px;
  }
}