/* Details — compound workspace. Shared parts come from design-system.css.
   Element IDs and classes here are read by js/details-v2.js; rename nothing. */

.details-workspace {
  flex: 1 0 auto;
  padding-top: calc(var(--nav-height) + var(--space-6));
  padding-bottom: var(--space-12);
}

.v2-container {
  width: 100%;
  max-width: calc(var(--container-max) + 2 * var(--gutter));
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.details-v2-page .oa-breadcrumb {
  margin-bottom: var(--space-5);
}

#crumbName {
  max-width: 40ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- Header ----------------------------------------------- */
.compound-header {
  display: block;
  margin-bottom: var(--space-8);
}

.compound-header h1 {
  margin: var(--space-2) 0 var(--space-3);
  font-size: clamp(2rem, 1.5rem + 2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  overflow-wrap: anywhere;
}

.compound-header h1::first-letter {
  text-transform: uppercase;
}

.header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

.compound-meta-label {
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--oa-text-3);
}

.compound-iupac {
  color: var(--oa-text-2);
  font-size: 1rem;
  overflow-wrap: anywhere;
}

.compound-formula {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 0.6rem;
  border-radius: 6px;
  border: 1px solid rgba(34, 211, 238, 0.32);
  background: rgba(34, 211, 238, 0.09);
  color: #9eeaf8;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
}

/* --- Workspace grid --------------------------------------- */
.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 1fr);
  grid-template-areas:
    'viewer info'
    'profile profile';
  gap: var(--space-6);
  align-items: start;
  margin-bottom: var(--space-12);
}

.viewer-column {
  grid-area: viewer;
  position: sticky;
}

.info-column {
  grid-area: info;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.profile-grid {
  grid-area: profile;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  align-items: start;
}

/* --- Cards ------------------------------------------------ */
.premium-card {
  border-radius: var(--radius-xl);
  border: 1px solid var(--oa-line);
  background: var(--oa-card-gradient);
  box-shadow: var(--oa-shadow-card);
}

.info-card {
  padding: var(--space-6);
}

.info-card h2 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--oa-line);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--oa-text);
}

.info-card h2::before {
  content: '';
  width: 3px;
  height: 16px;
  border-radius: 2px;
  background: var(--oa-cyan);
  box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
}

/* --- Viewer ----------------------------------------------- */
.viewer-shell {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-color: var(--oa-line-strong);
}

.viewer-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--oa-line);
}

.viewer-title {
  font-size: 1.02rem;
  font-weight: 600;
  margin-right: auto;
}

.viewer-tabs {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--oa-line);
  background: rgba(3, 10, 22, 0.6);
}

.mode-btn {
  min-height: 36px;
  min-width: 56px;
  padding: 0 0.9rem;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: var(--oa-text-2);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.mode-btn:hover {
  color: var(--oa-text);
  background: rgba(56, 189, 248, 0.07);
}

.mode-btn.active {
  border-color: rgba(34, 211, 238, 0.45);
  background: rgba(34, 211, 238, 0.14);
  color: #b8f3fc;
  font-weight: 600;
}

.reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 38px;
  padding: 0 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--oa-line);
  background: rgba(12, 27, 54, 0.6);
  color: var(--oa-text-2);
  font-size: 0.88rem;
  font-weight: 500;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.reset-btn:hover {
  color: var(--oa-text);
  border-color: var(--oa-line-strong);
}

.reset-btn svg,
.controls-2d svg,
.copy-btn svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.viewer-stage {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 45%, rgba(34, 140, 200, 0.12), transparent 55%),
    linear-gradient(rgba(56, 189, 248, 0.035) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, rgba(56, 189, 248, 0.035) 1px, transparent 1px) 0 0 / 32px 32px,
    #050e1c;
}

.viewer-layer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 150ms var(--ease);
}

.viewer-layer.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.engine-container {
  width: 100%;
  height: 100%;
}

.placeholder-text {
  color: var(--oa-text-2);
  font-size: 0.95rem;
  text-align: center;
}

.placeholder-text.is-error {
  color: var(--oa-danger);
  font-style: normal;
}

.viewer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 56px;
  padding: var(--space-2) var(--space-5);
  border-top: 1px solid var(--oa-line);
  background: rgba(3, 10, 22, 0.55);
}

#viewerCaption {
  font-size: var(--fs-meta);
  font-weight: 500;
  color: var(--oa-text-2);
}

.controls-2d {
  display: flex;
  gap: 6px;
}

.controls-2d.hidden {
  display: none;
}

.controls-2d button {
  display: inline-grid;
  place-items: center;
  min-width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--oa-line);
  background: rgba(12, 27, 54, 0.75);
  color: var(--oa-text);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.controls-2d button:hover {
  border-color: var(--oa-line-strong);
  background: var(--oa-bg-3);
}

.controls-2d #zoomFit2d {
  padding: 0 0.85rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* --- Data lists ------------------------------------------- */
.data-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.data-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(80, 160, 230, 0.08);
  line-height: 1.4;
}

.data-list li:last-child {
  border-bottom: 0;
}

.data-list .label {
  flex-shrink: 0;
  color: var(--oa-text-2);
  font-size: 0.9rem;
}

.data-list .value {
  color: var(--oa-text);
  font-size: 0.92rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  text-align: right;
  overflow-wrap: anywhere;
}

.ident-list .value {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 400;
  color: #c9f4fb;
  word-break: break-all;
}

.copyable-value {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem;
  min-width: 0;
  text-align: right;
}

.copy-btn {
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: var(--oa-text-3);
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.copy-btn:hover {
  color: var(--oa-cyan);
  border-color: var(--oa-line);
  background: rgba(34, 211, 238, 0.06);
}

.copy-feedback {
  margin-left: 0.25rem;
  font-size: 0.75rem;
  color: var(--oa-success);
  animation: oa-fade-out 2s forwards;
}

@keyframes oa-fade-out {
  0%, 70% { opacity: 1; }
  100% { opacity: 0; }
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags-list .tag {
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.08);
  color: #9eeaf8;
  font-size: 0.8rem;
  font-weight: 500;
}

.text-content {
  color: var(--oa-text-2);
  font-size: 0.93rem;
  line-height: 1.65;
}

.text-content ul {
  margin-left: 1.1rem !important;
  columns: 2 180px;
  column-gap: var(--space-6);
}

.text-content ul:not(.isomers-list) li {
  break-inside: avoid;
  padding: 0.1rem 0;
}

.text-content ul:not(.isomers-list) li::marker {
  color: var(--oa-cyan);
}

.text-content em {
  color: var(--oa-text-3) !important;
}

.expand-btn {
  margin-top: var(--space-4);
}

/* --- Isomers ---------------------------------------------- */
.isomers-list {
  list-style: none;
  display: grid;
  gap: 2px;
}

.text-content .isomers-list {
  margin-left: 0 !important;
  columns: auto;
}

.isomer-item {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  padding: 0.6rem 0.75rem 0.6rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.isomer-item::before {
  content: '';
  position: absolute;
  left: 0.2rem;
  top: 50%;
  width: 2px;
  height: 16px;
  border-radius: 2px;
  background: rgba(34, 211, 238, 0.5);
  transform: translateY(-50%);
  transition: height var(--transition-fast), background-color var(--transition-fast);
}

.isomer-item:hover,
.isomer-item:focus-visible {
  background: rgba(34, 211, 238, 0.07);
}

.isomer-item:hover::before,
.isomer-item:focus-visible::before {
  height: 24px;
  background: var(--oa-cyan);
}

.isomer-name {
  color: var(--oa-text);
  font-weight: 500;
  overflow-wrap: anywhere;
}

.isomer-cid {
  flex-shrink: 0;
  color: var(--oa-text-3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

/* --- Request CTA ------------------------------------------ */
.request-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-8) 0 0;
  border-top: 1px solid var(--oa-line);
  text-align: center;
}

.request-cta p {
  color: var(--oa-text-2);
}

.error-card {
  margin-bottom: var(--space-10);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

/* --- Responsive ------------------------------------------- */
@media (max-width: 1024px) {
  .workspace-grid {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      'viewer'
      'info'
      'profile';
  }

  .viewer-column {
    position: static;
  }

  .info-column {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .viewer-stage {
    min-height: 440px;
  }
}

@media (max-width: 768px) {
  .info-column,
  .profile-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 600px) {
  .viewer-header {
    padding: var(--space-3) var(--space-4);
  }

  .viewer-title {
    flex-basis: 100%;
  }

  .viewer-tabs {
    flex: 1;
  }

  .mode-btn {
    flex: 1;
    min-width: 0;
    min-height: 40px;
    padding: 0 0.4rem;
  }

  .viewer-stage {
    min-height: 340px;
  }

  .viewer-footer {
    padding: var(--space-2) var(--space-4);
  }

  .info-card {
    padding: var(--space-5);
  }

  .data-list li {
    flex-direction: column;
    gap: 0.15rem;
  }

  .data-list .value {
    text-align: left;
  }

  .copyable-value {
    justify-content: space-between;
    width: 100%;
    text-align: left;
  }

  .text-content ul {
    columns: 1;
  }
}