/* ── VIEWER SCREEN ── */
.viewer-screen {
  flex-direction: column;
  position: relative;
}
.viewer-screen.preparing {
  visibility: hidden;
}
.viewer-mobile-guard {
  display: none;
}
.viewer-mobile-card {
  width: min(520px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 24px;
  border: 1px solid var(--dim);
  border-radius: 18px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--raised) 92%, transparent), color-mix(in srgb, var(--base) 96%, transparent));
  box-shadow: 0 30px 80px rgba(0,0,0,0.24);
  text-align: center;
}
.viewer-mobile-kicker {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.viewer-mobile-title {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.08;
  font-weight: 700;
}
.viewer-mobile-copy {
  margin: 0;
  color: var(--t2);
  font-size: 15px;
  line-height: 1.6;
}
.viewer-mobile-actions {
  margin-top: 22px;
  display: flex;
  justify-content: center;
}
.viewer-mobile-btn {
  min-width: 180px;
  height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  border: 1px solid var(--dim);
  background: color-mix(in srgb, var(--accent) 16%, var(--raised));
  color: var(--accent);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.viewer-mobile-btn:hover {
  background: color-mix(in srgb, var(--accent) 24%, var(--raised));
  border-color: color-mix(in srgb, var(--accent) 40%, var(--dim));
}
.viewer-topbar {
  display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: center;
  gap: 14px;
  padding: 8px 18px; min-height: 74px;
  background: var(--base); border-bottom: 1px solid var(--dim);
  flex-shrink: 0; position: relative; z-index: 40;
}
.vtb-left { display: flex; align-items: center; gap: 14px; min-width: 0; overflow: hidden; }
.vtb-meta-stack { display: flex; flex-direction: column; justify-content: center; gap: 4px; min-width: 0; }
.vtb-center {
  display: flex; align-items: center; gap: 12px;
  min-width: 0; justify-self: center; justify-content: center;
  grid-column: 2;
}
.vtb-logo {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px; font-weight: 600;
  letter-spacing: 0.12em; color: var(--accent); cursor: pointer; white-space: nowrap;
}
.vtb-sep { width: 1px; height: 24px; background: var(--mid); flex-shrink: 0; }
.vtb-title-wrap { display: flex; align-items: center; gap: 10px; min-width: 0; }
.vtb-name { font-size: 16px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 440px; }
.vtb-structure-compact {
  display: flex; flex-direction: column; justify-content: center; gap: 3px; min-width: 0;
}
.vtb-structure-summary {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent);
  line-height: 1.35;
  padding-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.vtb-structure-title {
  font-size: 11px;
  color: var(--t3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 560px;
}
.vtb-structure-title:empty { display: none; }
.vtb-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px; font-weight: 500;
  padding: 4px 11px; border-radius: 4px;
  border: 1px solid var(--mid); color: var(--t2); background: var(--raised);
  white-space: nowrap;
}
.vtb-mode-switch {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px; border-radius: 10px; border: 1px solid var(--dim);
  background: color-mix(in srgb, var(--raised) 88%, transparent);
  flex-shrink: 0;
}
.vtb-mode-btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px; font-weight: 600;
  padding: 10px 18px; border-radius: 9px; border: none;
  background: transparent; color: var(--t3); cursor: pointer; transition: all 0.15s;
}
.vtb-mode-btn:hover { color: var(--t2); background: var(--raised); }
.vtb-mode-btn.active { color: var(--accent); background: var(--accent-g); }
.vtb-mode-btn:disabled { opacity: 0.6; cursor: wait; }
.pdb-selector { position: relative; min-width: 320px; max-width: 100%; width: 100%; font-family: 'DM Sans', sans-serif; z-index: 45; }
.sidebar-pdb-sec { padding-bottom: 14px; }
.sidebar-pdb-wrap { display: flex; flex-direction: column; gap: 10px; padding: 0 16px 14px; }
.sidebar-pdb-selector {
  min-width: 0;
  width: 100%;
  z-index: 55;
}
.sidebar-pdb-selector .pdb-selector-trigger {
  min-height: 66px;
  padding: 10px 14px 11px;
  border-radius: 12px;
}
.sidebar-pdb-selector .pdb-selector-menu {
  width: 100%;
  max-height: 380px;
  left: 0;
  right: 0;
  top: calc(100% + 8px);
}
.sidebar-action-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.sidebar-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--dim);
  background: color-mix(in srgb, var(--raised) 94%, transparent);
  color: var(--t2);
  cursor: pointer;
  transition: all 0.15s;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  font-weight: 600;
}
.sidebar-action-btn:hover {
  border-color: var(--mid);
  color: var(--t1);
  background: var(--raised);
}
.sidebar-action-icon {
  font-size: 17px;
  line-height: 1;
  color: var(--accent);
}
.pdb-selector-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.pdb-selector-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  line-height: 1.1;
  opacity: 0.82;
}
.pdb-selector-trigger {
  width: 100%; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px;
  min-height: 52px;
  padding: 9px 14px 10px; border-radius: 12px; border: 1px solid var(--dim);
  background: color-mix(in srgb, var(--raised) 92%, transparent); color: var(--t1);
  cursor: pointer; transition: all 0.15s; text-align: left;
  font-family: 'DM Sans', sans-serif;
}
.pdb-selector-trigger:hover { border-color: var(--mid); background: var(--raised); transform: translateY(-1px); }
.pdb-selector.open .pdb-selector-trigger { border-color: var(--accent); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 22%, transparent), 0 10px 20px rgba(0,0,0,0.14); }
.pdb-selector-trigger:disabled { opacity: 0.7; cursor: wait; }
.pdb-selector-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.pdb-selector-code {
  font-family: 'DM Sans', sans-serif; font-size: 14px; font-weight: 700;
  color: var(--accent); white-space: nowrap; letter-spacing: 0.01em;
}
.pdb-selector-meta {
  font-family: 'DM Sans', sans-serif; font-size: 12px; font-weight: 500; color: var(--t2);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pdb-selector-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  font-weight: 500;
  color: var(--t3);
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.pdb-selector-chevron { color: var(--t2); font-size: 26px; line-height: 1; transition: transform 0.15s, color 0.15s; transform-origin: center; }
.pdb-selector:hover .pdb-selector-chevron,
.pdb-selector.open .pdb-selector-chevron { color: var(--accent); }
.pdb-selector.open .pdb-selector-chevron { transform: rotate(180deg); }
.pdb-selector-menu {
  position: absolute; top: calc(100% + 10px); left: 0; width: min(520px, calc(100vw - 72px));
  max-height: 420px; overflow-y: auto; display: none; flex-direction: column; gap: 8px;
  padding: 10px; border-radius: 14px; border: 1px solid var(--dim);
  background: linear-gradient(180deg, color-mix(in srgb, var(--raised) 98%, transparent), var(--base));
  box-shadow: 0 24px 48px rgba(0,0,0,0.28); z-index: 120;
}
.pdb-selector.open .pdb-selector-menu { display: flex; }
.pdb-option {
  width: 100%; text-align: left; padding: 12px 13px; border-radius: 10px;
  border: 1px solid var(--dim); background: var(--raised); color: var(--t1);
  transition: all 0.15s; display: flex; flex-direction: column; gap: 6px;
  font-family: 'DM Sans', sans-serif;
}
.pdb-option:hover { border-color: var(--mid); background: var(--surface); }
.pdb-option.active { border-color: var(--accent); background: linear-gradient(180deg, var(--accent-g), transparent 78%), var(--raised); }
.pdb-option-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.pdb-option-select {
  width: 100%; padding: 0; margin: 0; border: none; background: none; color: inherit;
  text-align: left; cursor: pointer; font: inherit; font-family: 'DM Sans', sans-serif;
}
.pdb-option-select:disabled { cursor: not-allowed; }
.pdb-option-id { font-family: 'DM Sans', sans-serif; font-size: 13px; font-weight: 700; color: var(--accent); }
.pdb-option-meta { font-family: 'DM Sans', sans-serif; font-size: 12px; font-weight: 500; color: var(--t3); margin-top: 4px; }
.pdb-option-title { margin-top: 6px; font-family: 'DM Sans', sans-serif; font-size: 12px; line-height: 1.45; color: var(--t2); }
.pdb-option-links { display: flex; flex-direction: column; gap: 5px; margin-top: 4px; }
.pdb-option-publication-title {
  font-family: 'DM Sans', sans-serif; font-size: 11px; line-height: 1.45; color: var(--t2);
  text-decoration: none;
}
.pdb-option-publication-title[href] {
  color: var(--t1);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 55%, transparent);
  text-underline-offset: 2px;
}
.pdb-option-publication-title[href]:hover { color: var(--accent); }
.pdb-option-publication-link {
  display: inline-flex; align-items: center; gap: 5px; width: fit-content;
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; font-weight: 600;
  color: var(--accent); text-decoration: none; padding: 4px 8px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 42%, transparent);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
}
.pdb-option-publication-link:hover { background: color-mix(in srgb, var(--accent) 16%, transparent); }
.pdb-option-publication.empty { color: var(--t3); }
.pdb-option.loading .pdb-option-select,
.pdb-option.unavailable .pdb-option-select { cursor: not-allowed; }
.pdb-option.loading,
.pdb-option.unavailable { opacity: 0.88; }
.structure-state {
  font-family: 'DM Sans', sans-serif; font-size: 11px; font-weight: 700;
  padding: 3px 7px; border-radius: 999px; border: 1px solid var(--dim); white-space: nowrap;
}
.structure-state.loaded { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 55%, transparent); background: var(--accent-g); }
.structure-state.loading, .structure-state.rendering { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, transparent); background: color-mix(in srgb, var(--warn) 12%, transparent); }
.structure-state.pending { color: var(--t3); }
.structure-state.unavailable, .structure-state.error, .structure-state.render-failed { color: var(--error); border-color: color-mix(in srgb, var(--error) 50%, transparent); background: color-mix(in srgb, var(--error) 10%, transparent); }
.vtb-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; justify-self: end; }
.vtb-seq-search {
  display: inline-flex;
  align-items: center;
  gap: 0;
  min-width: 0;
  height: 42px;
  margin-left: 0;
  border: 1px solid var(--dim);
  border-radius: 8px;
  background: color-mix(in srgb, var(--raised) 92%, transparent);
  overflow: hidden;
}
.vtb-seq-search-label {
  height: 100%;
  display: inline-flex;
  align-items: center;
  padding: 0 13px;
  border-right: 1px solid var(--dim);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.vtb-seq-search-input {
  width: 236px;
  height: 100%;
  min-width: 0;
  padding: 0 12px;
  border: none;
  background: transparent;
  color: var(--t1);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  outline: none;
}
.vtb-seq-search-input::placeholder { color: var(--t3); }
.vtb-seq-search-input.invalid { color: var(--error); }
.vtb-seq-search-btn {
  height: 100%;
  padding: 0 13px;
  border: none;
  border-left: 1px solid var(--dim);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.vtb-seq-search-btn:hover {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
}
.vtb-search-gap {
  width: 10px;
  flex: 0 0 10px;
}
.vtb-toolbar-sep {
  width: 1px;
  height: 22px;
  background: var(--dim);
  flex-shrink: 0;
}
.vtb-btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px; font-weight: 500;
  padding: 8px 17px; border-radius: 7px;
  border: 1px solid var(--dim); background: transparent;
  color: var(--t3); cursor: pointer; transition: all 0.15s;
  display: inline-flex; align-items: center; gap: 8px;
}
.vtb-btn:hover { border-color: var(--mid); color: var(--t2); background: var(--raised); }
.vtb-btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  color: var(--accent);
  flex-shrink: 0;
}

/* ── PDB TITLE BAR ── */
.pdb-title-bar {
  padding: 5px 20px;
  background: var(--base);
  border-bottom: 1px solid var(--dim);
  flex-shrink: 0;
  font-size: 17px; color: var(--t2);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  display: none; /* shown via JS when title is available */
}

/* ── VIEWER BODY: flex-based, resizable ── */
.viewer-body {
  display: flex;
  flex-direction: row;
  flex: 1;
  overflow: hidden;
}

/* Left column: mol* + seq panel stacked */
.viewer-left {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
  min-width: 200px;
}

/* Mol* container — always dark background regardless of theme */
.viewer-mol {
  flex: 1;
  position: relative;
  background: #05070c;
  overflow: hidden;
  min-height: 100px;
}
.mol-hud {
  position: absolute; top: 12px; left: 14px; z-index: 10;
  display: flex; flex-direction: column; gap: 5px; pointer-events: none;
}
.mol-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; color: #8b9cc0;
  background: #05070cdd; backdrop-filter: blur(10px);
  padding: 4px 11px; border-radius: 4px; border: 1px solid #1a2238;
  display: flex; align-items: center; gap: 7px;
}
.mol-tag .blink {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 5px var(--accent);
  animation: pulse 2s infinite;
}
.mol-tag.info-label { color: #8b9cc0; font-size: 9px; opacity: 0.7; }

/* Color legend inside Mol* viewport */
.mol-legend {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%); z-index: 10;
  display: flex; align-items: center; gap: 12px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; color: #8b9cc0;
  background: #05070cdd; backdrop-filter: blur(10px);
  padding: 6px 14px; border-radius: 4px; border: 1px solid #1a2238;
  pointer-events: none;
}
.mol-legend-item {
  display: flex; align-items: center; gap: 5px;
}
.legend-swatch {
  width: 10px; height: 10px; border-radius: 2px; flex-shrink: 0;
}

/* ── RESIZE HANDLES ── */
.resize-h {
  height: 5px;
  flex-shrink: 0;
  cursor: row-resize;
  background: var(--dim);
  position: relative;
  transition: background 0.15s;
  user-select: none;
  z-index: 5;
}
.resize-h::after {
  content: '';
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 48px; height: 2px;
  background: var(--t3); border-radius: 1px;
  transition: background 0.15s;
}
.resize-h:hover, .resize-h.dragging { background: var(--accent-g); }
.resize-h:hover::after, .resize-h.dragging::after { background: var(--accent); }

.resize-v {
  width: 5px;
  flex-shrink: 0;
  cursor: col-resize;
  background: var(--dim);
  position: relative;
  transition: background 0.15s;
  user-select: none;
  z-index: 5;
}
.resize-v::after {
  content: '';
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 2px; height: 48px;
  background: var(--t3); border-radius: 1px;
  transition: background 0.15s;
}
.resize-v:hover, .resize-v.dragging { background: var(--accent-g); }
.resize-v:hover::after, .resize-v.dragging::after { background: var(--accent); }

/* Sidebar */
.viewer-sidebar {
  width: 340px;
  min-width: 200px;
  flex-shrink: 0;
  background: var(--base);
  border-left: 1px solid var(--dim);
  display: flex; flex-direction: column; overflow-y: auto; overflow-x: visible;
}
.sb-sec { border-bottom: 1px solid var(--dim); position: relative; }
.sb-h {
  padding: 12px 16px 8px;
  display: flex; align-items: center; justify-content: space-between;
}
.sb-t {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.1em; color: var(--t3); text-transform: uppercase;
}
.sb-c {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px; color: var(--t3);
  background: var(--surface); padding: 2px 7px; border-radius: 3px;
}
.stats-row {
  display: grid; grid-template-columns: repeat(3,1fr);
  padding: 2px 16px 12px; gap: 4px;
}
.stat { text-align: center; }
.stat-n { font-family: 'IBM Plex Mono', monospace; font-size: 17px; font-weight: 600; }
.stat-l { font-size: 11px; color: var(--t3); margin-top: 1px; }
.structure-switcher { padding: 0 16px 14px; display: none; }
.structure-switcher-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.structure-switcher-label, .structure-switcher-count {
  font-size: 11px; color: var(--t3);
}
.structure-switcher-label { font-weight: 600; letter-spacing: 0.02em; }
.structure-switcher-list { display: flex; flex-direction: column; gap: 6px; max-height: 220px; overflow-y: auto; }
.structure-switch-btn {
  width: 100%; text-align: left; padding: 10px 11px; border-radius: 8px;
  border: 1px solid var(--dim); background: var(--raised); color: var(--t1);
  cursor: pointer; transition: all 0.15s ease; font-family: 'DM Sans', sans-serif;
}
.structure-switch-btn:hover { border-color: var(--mid); background: var(--surface); }
.structure-switch-btn.active { border-color: var(--accent); background: linear-gradient(180deg, var(--accent-g), transparent 75%), var(--raised); }
.structure-switch-btn:disabled { opacity: 0.65; cursor: wait; }
.structure-switch-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.structure-switch-id { font-size: 12px; font-weight: 700; color: var(--accent); letter-spacing: 0.01em; }
.structure-switch-meta { font-size: 11px; color: var(--t3); white-space: nowrap; }
.structure-switch-title { margin-top: 4px; font-size: 12px; line-height: 1.35; color: var(--t2); font-weight: 500; }

/* Lighting */
.chip-row { padding: 2px 16px 12px; display: flex; flex-wrap: wrap; gap: 5px; }
.chip {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; font-weight: 500;
  padding: 4px 10px; border-radius: 4px;
  border: 1px solid var(--dim); background: transparent;
  color: var(--t3); cursor: pointer; transition: all 0.12s;
}
.chip:hover { border-color: var(--mid); color: var(--t2); }
.chip.on { border-color: var(--accent); color: var(--accent); background: var(--accent-g); }

/* Show All chip */
.show-all-chip {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; font-weight: 500;
  padding: 2px 8px; border-radius: 3px;
  border: 1px solid var(--accent); background: var(--accent-g);
  color: var(--accent); cursor: pointer; transition: all 0.12s;
}
.show-all-chip:hover { background: var(--accent); color: var(--void); }

/* ── Motif list ── */
.motif-scroll { flex: 1; overflow-y: auto; padding: 0 8px 10px; }

/* Motif card — base */
.motif-card {
  display: grid; grid-template-columns: 12px minmax(0, 1fr) auto;
  gap: 10px; align-items: start;
  padding: 10px 10px; border-radius: 6px;
  cursor: pointer; transition: all 0.12s;
  border: 1px solid transparent;
}
.motif-card:hover { background: var(--raised); border-color: var(--dim); }
.motif-card.active { background: var(--surface); border-color: var(--mid); }
.motif-card.unresolved {
  opacity: 1;
  border-color: color-mix(in srgb, var(--error) 55%, var(--dim));
  background: linear-gradient(180deg, color-mix(in srgb, var(--error) 10%, transparent), transparent 78%), var(--raised);
}
.motif-card.unresolved:hover { border-color: color-mix(in srgb, var(--error) 70%, var(--dim)); }
.motif-card.unresolved .motif-nm,
.motif-card.unresolved .motif-rg,
.motif-card.unresolved .motif-badge,
.motif-card.unresolved .motif-mt,
.card-motif-row.unresolved .card-motif-name,
.card-motif-row.unresolved .card-motif-rg,
.dd-motif-item.unresolved .dd-motif-name,
.dd-motif-item.unresolved .dd-motif-rg,
.dd-motif-item.unresolved .dd-motif-type {
  color: color-mix(in srgb, var(--error) 86%, var(--t1));
}
.card-motif-row.unresolved, .dd-motif-item.unresolved {
  opacity: 1;
  background: color-mix(in srgb, var(--error) 8%, transparent);
}
.motif-card.warning {
  border-color: color-mix(in srgb, var(--warn) 55%, var(--dim));
  background: linear-gradient(180deg, color-mix(in srgb, var(--warn) 10%, transparent), transparent 78%), var(--raised);
}
.motif-card.warning:hover { border-color: color-mix(in srgb, var(--warn) 70%, var(--dim)); }
.motif-card.warning .motif-nm,
.motif-card.warning .motif-rg,
.motif-card.warning .motif-badge,
.motif-card.warning .motif-mt,
.card-motif-row.warning .card-motif-name,
.card-motif-row.warning .card-motif-rg,
.dd-motif-item.warning .dd-motif-name,
.dd-motif-item.warning .dd-motif-rg,
.dd-motif-item.warning .dd-motif-type {
  color: color-mix(in srgb, var(--warn) 86%, var(--t1));
}
.card-motif-row.warning,
.dd-motif-item.warning {
  background: color-mix(in srgb, var(--warn) 8%, transparent);
}
.motif-sw { width: 12px; height: 12px; border-radius: 3px; margin-top: 3px; }
.motif-nm { display: flex; align-items: flex-start; gap: 8px; font-size: 14px; font-weight: 600; white-space: normal; overflow: visible; text-overflow: clip; line-height: 1.35; }
.motif-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 15px;
  height: 15px;
  padding: 0 3px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, transparent);
  background: color-mix(in srgb, var(--accent) 4%, transparent);
  color: color-mix(in srgb, var(--accent) 42%, var(--t3));
  font-family: 'IBM Plex Mono', monospace;
  font-size: 8px;
  font-weight: 500;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
  opacity: 0.85;
}
.motif-card.unresolved .motif-index,
.card-motif-row.unresolved .card-motif-index {
  color: var(--error);
  border-color: color-mix(in srgb, var(--error) 54%, transparent);
  background: color-mix(in srgb, var(--error) 10%, transparent);
}
.motif-card.warning .motif-index,
.card-motif-row.warning .card-motif-index {
  color: var(--warn);
  border-color: color-mix(in srgb, var(--warn) 54%, transparent);
  background: color-mix(in srgb, var(--warn) 12%, transparent);
}
.motif-name-text {
  min-width: 0;
  flex: 1;
}
.motif-mt { font-size: 11px; color: var(--t3); margin-top: 2px; line-height: 1.35; word-break: break-word; }
.motif-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px; color: color-mix(in srgb, var(--accent) 82%, var(--t2)); margin-top: 3px;
  display: flex; align-items: center; gap: 4px; flex-wrap: wrap;
}
.motif-badge .warn {
  color: var(--warn); font-size: 9px; opacity: 0.9;
}
.motif-badge .not-visible {
  color: var(--t3); font-size: 9px; font-style: italic; opacity: 0.7;
}
.motif-card.low-coverage {
  opacity: 0.55;
}
.motif-card.low-coverage:hover { opacity: 0.85; }
.motif-warn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px;
  color: var(--warn); font-size: 13px; cursor: help;
  margin-left: auto; margin-right: 4px; align-self: center;
  border-radius: 999px;
  animation: pulse-warn 1.8s ease-in-out infinite;
}
.motif-warn-icon.error { color: var(--error); }
.motif-warn-icon.error:hover,
.motif-warn-icon.error:focus-visible { color: color-mix(in srgb, var(--error) 90%, white 8%); }
.motif-warn-icon:hover,
.motif-warn-icon:focus-visible {
  color: var(--warn-strong);
}
@keyframes pulse-warn {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}
.motif-warn-icon:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--warn) 28%, transparent);
}
.warn-tooltip {
  position: fixed;
  top: 0;
  left: 0;
  display: none;
  max-width: min(280px, calc(100vw - 32px));
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--tooltip-border);
  background: var(--tooltip-bg);
  box-shadow: var(--tooltip-shadow);
  color: var(--t1);
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.01em;
  white-space: normal;
  text-align: left;
  pointer-events: none;
  z-index: 2500;
}
.warn-tooltip.visible {
  display: block;
}
.card-motifs {
  margin-top: 6px; padding-top: 5px;
  border-top: 1px solid var(--dim);
}
.card-motifs-label {
  font-size: 9px; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--t3); margin-bottom: 3px; font-weight: 600;
}
.card-motif-row {
  display: flex; align-items: flex-start; gap: 6px;
  padding: 3px 4px; border-radius: 4px; cursor: pointer;
  transition: background 0.12s;
}
.card-motif-row:hover { background: var(--raised); }
.card-motif-sw { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0; }
.card-motif-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 13px;
  height: 13px;
  padding: 0 2px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 14%, transparent);
  background: color-mix(in srgb, var(--accent) 3%, transparent);
  color: color-mix(in srgb, var(--accent) 38%, var(--t3));
  font-family: 'IBM Plex Mono', monospace;
  font-size: 7px;
  font-weight: 500;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
  opacity: 0.8;
}
.card-motif-name {
  font-size: 11px; color: var(--t2); white-space: normal;
  overflow: visible; text-overflow: clip; flex: 1; line-height: 1.3;
}
.card-motif-rg {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; color: var(--t3); white-space: nowrap; flex-shrink: 0;
}
.motif-right {
  display: flex; flex-direction: column; align-items: flex-end; gap: 4px; min-width: 78px;
}
.motif-right-top {
  display: flex; align-items: center; justify-content: flex-end; gap: 6px;
}
.motif-right-top .motif-warn-icon {
  margin-left: 0; margin-right: 0; align-self: auto;
}
.motif-rg {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px; color: var(--t2); white-space: nowrap; text-align: right;
}
.motif-chevron {
  background: none; border: none; color: var(--t3);
  font-size: 18px; cursor: pointer; padding: 3px 6px;
  border-radius: 4px; transition: all 0.12s;
  line-height: 1;
}
.motif-chevron:hover { color: var(--t1); background: var(--surface); }
.motif-chevron.open { transform: rotate(90deg); }

/* Nested motifs inside domain dropdown */
.dd-motifs-sec { margin-top: 10px; padding-top: 8px; border-top: 1px solid var(--dim); }
.dd-motifs-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px; font-weight: 600;
  letter-spacing: 0.1em; color: var(--t3);
  text-transform: uppercase; margin-bottom: 6px;
}
.dd-motif-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px; border-radius: 4px;
  cursor: pointer; transition: background 0.1s;
}
.dd-motif-item:hover { background: var(--surface); }
.dd-motif-sw { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0; }
.dd-motif-info { flex: 1; min-width: 0; }
.dd-motif-name { font-size: 12px; font-weight: 600; color: var(--t2); }
.dd-motif-type { font-size: 10px; color: var(--t3); margin-left: 6px; }
.dd-motif-rg {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; color: var(--t3); white-space: nowrap;
}
.dd-child-detail {
  margin: 2px 0 6px 16px;
  padding: 8px 10px;
  background: var(--base); border: 1px solid var(--dim);
  border-radius: 4px; font-size: 11px; color: var(--t3); line-height: 1.5;
}
.dd-child-detail .dd-row { display: flex; gap: 6px; margin-bottom: 2px; }
.dd-child-detail .dd-label { font-size: 9px; min-width: 60px; }
.dd-child-detail .dd-val { font-size: 11px; color: var(--t2); }
.dd-child-detail .dd-desc { margin-top: 4px; padding-top: 4px; border-top: 1px solid var(--dim); font-size: 11px; color: var(--t2); line-height: 1.5; }
.complex-card {
  display: grid; grid-template-columns: 12px minmax(0, 1fr) auto;
  gap: 10px; align-items: start;
  padding: 11px 10px; border-radius: 8px;
  border: 1px solid transparent; cursor: pointer; transition: all 0.12s;
}
.complex-card:hover { background: var(--raised); border-color: var(--dim); }
.complex-card.active { background: var(--surface); border-color: var(--mid); }
.complex-card.primary { border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.complex-card-sw { width: 12px; height: 12px; border-radius: 3px; margin-top: 4px; }
.complex-card-name { font-size: 14px; font-weight: 600; line-height: 1.35; }
.complex-card-meta { font-size: 11px; color: var(--t3); margin-top: 2px; line-height: 1.4; }
.complex-card-binds { font-family: 'IBM Plex Mono', monospace; font-size: 10px; color: var(--t2); margin-top: 4px; line-height: 1.5; white-space: normal; word-break: break-word; }
.complex-card-desc { margin-top: 5px; font-size: 11px; color: var(--t3); line-height: 1.45; word-break: break-word; }
.complex-card-pill {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; color: var(--t2);
  padding: 3px 8px; border-radius: 999px; border: 1px solid var(--dim); background: var(--base);
  white-space: nowrap;
}
.complex-empty {
  padding: 16px; font-size: 12px; color: var(--t3); line-height: 1.6;
}

/* Dropdown panel */
.motif-dropdown {
  margin: 0 8px 4px 28px;
  padding: 10px 14px;
  background: var(--raised);
  border: 1px solid var(--dim);
  border-radius: 6px;
  font-size: 12px; color: var(--t3);
  line-height: 1.5;
}
.motif-dropdown .dd-row {
  display: flex; gap: 8px; margin-bottom: 3px;
}
.motif-dropdown .dd-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; font-weight: 600;
  color: var(--t3); text-transform: uppercase;
  min-width: 70px; flex-shrink: 0;
}
.motif-dropdown .dd-val { font-size: 12px; color: var(--t2); }
.motif-dropdown .dd-desc {
  margin-top: 6px; padding-top: 6px;
  border-top: 1px solid var(--dim);
  font-size: 12px; color: var(--t2); line-height: 1.6;
}
.no-desc { color: var(--t3) !important; font-style: italic; }
.dd-link { color: var(--accent); text-decoration: none; border-bottom: 1px dotted var(--accent); transition: opacity 0.15s; font-weight: 600; }
.dd-link:hover { opacity: 0.75; }
.dd-link-btn { display: block; margin-top: 10px; font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 600; padding: 7px 12px; border-radius: 5px; border: 1px solid var(--accent); background: var(--accent-g); color: var(--accent); text-decoration: none; text-align: center; transition: all 0.12s; }
.dd-link-btn:hover { background: var(--accent); color: var(--void); }
.pdb-title-link { color: var(--t2); text-decoration: none; border-bottom: 1px dotted var(--t3); transition: color 0.15s, border-color 0.15s; }
.pdb-title-link:hover { color: var(--accent); border-bottom-color: var(--accent); }
.pdb-title-badge { margin-left: 10px; font-family: 'IBM Plex Mono', monospace; font-size: 10px; color: var(--accent); opacity: 0.8; border: 1px solid var(--accent); padding: 1px 6px; border-radius: 3px; white-space: nowrap; text-decoration: none; cursor: pointer; transition: all 0.15s; }
.pdb-title-badge:hover { opacity: 1; background: var(--accent-g); }
/* Hide only PDBe branding/link inside Mol* viewport — keep screenshot, state, reset buttons */
.viewer-mol .msp-viewport-controls a[target="_blank"],
.viewer-mol .msp-viewport-controls-bottom,
.viewer-mol [class*="pdbe-logo"],
.viewer-mol [class*="pdbe-link"] { display: none !important; }
/* Motif section header */
.motif-section-header {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px; font-weight: 600;
  letter-spacing: 0.12em; color: var(--t3);
  text-transform: uppercase; padding: 10px 10px 4px;
  border-bottom: 1px solid var(--dim); margin-bottom: 2px;
}

/* ── Sequence panel ── */
.seq-panel {
  height: 300px;
  min-height: 160px;
  flex-shrink: 0;
  background: var(--base);
  border-top: 1px solid var(--dim);
  padding: 8px 20px;
  display: flex; flex-direction: column; overflow: hidden;
}
.viewer-screen.complex-mode .seq-panel,
.viewer-screen.complex-mode #resize-seq {
  display: flex;
  height: 0 !important;
  min-height: 0 !important;
  padding-top: 0;
  padding-bottom: 0;
  border-top: 0;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
}
.viewer-screen.complex-mode .vtb-seq-search {
  display: none;
}
.viewer-screen.complex-mode #resize-seq {
  display: block;
  height: 0;
  opacity: 0;
  background: transparent;
}
.seq-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 6px; flex-shrink: 0;
}
.seq-head-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
  flex: 1;
}
.seq-lbl {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px; font-weight: 600;
  letter-spacing: 0.1em; color: var(--t3); text-transform: uppercase;
}
.seq-tracks { display: flex; flex-direction: column; gap: 3px; flex: 1; overflow: hidden; }
.seq-row { display: flex; align-items: center; gap: 10px; height: 48px; flex-shrink: 0; }
.seq-row-lbl {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px; color: var(--t3);
  width: 90px; text-align: right; flex-shrink: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.seq-bar {
  flex: 1; height: 100%; background: var(--raised);
  border-radius: 3px; position: relative; overflow: hidden;
}
.seq-blk {
  position: absolute; top: 2px; bottom: 2px;
  border-radius: 2px; cursor: pointer;
  transition: filter 0.12s, transform 0.12s;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.seq-blk:hover { filter: brightness(1.4); transform: scaleY(1.3); z-index: 2; }
.seq-blk.unresolved {
  background: transparent !important;
  border: 1px solid color-mix(in srgb, var(--error) 84%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--error) 42%, transparent);
}
.seq-blk.selected { box-shadow: inset 0 0 0 2px rgba(255,255,255,0.78); filter: brightness(1.08); z-index: 3; }
.seq-blk.unresolved.selected {
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--error) 92%, white 8%);
}
.seq-blk-t {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px; color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
  white-space: nowrap; padding: 0 4px;
  overflow: hidden; text-overflow: ellipsis;
  max-width: 100%; min-width: 0;
}
.seq-blk-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 6px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.22);
  background: rgba(6, 12, 28, 0.28);
  color: rgba(255,255,255,0.96);
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  opacity: 0.95;
}
[data-theme="light"] .seq-blk-t {
  color: #0f172a;
  text-shadow: none;
}
[data-theme="light"] .seq-blk-num {
  border-color: rgba(15, 23, 42, 0.2);
  background: rgba(255,255,255,0.76);
  color: rgba(15, 23, 42, 0.94);
}
.seq-blk:hover::after {
  content: attr(data-full-name);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 6px);
  transform: translateX(-50%);
  max-width: min(280px, 50vw);
  padding: 6px 9px;
  border-radius: 6px;
  border: 1px solid var(--dim);
  background: color-mix(in srgb, var(--base) 96%, transparent);
  box-shadow: 0 10px 18px rgba(0,0,0,0.18);
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--t1);
  white-space: normal;
  text-align: center;
  pointer-events: none;
  z-index: 8;
}

.viewer-mode-overlay[hidden] { display: none !important; }
.viewer-mode-overlay {
  position: absolute;
  inset: 0;
  z-index: 85;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--void) 98%, transparent);
  backdrop-filter: blur(10px);
}
.viewer-mode-card {
  width: min(520px, calc(100vw - 48px));
  padding: 28px 28px 24px;
  border-radius: 18px;
  border: 1px solid var(--dim);
  background: linear-gradient(180deg, color-mix(in srgb, var(--raised) 98%, transparent), var(--base));
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.32);
  text-align: center;
}
.viewer-mode-ring {
  width: 46px;
  height: 46px;
  margin: 0 auto 18px;
  border: 3px solid var(--dim);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.viewer-mode-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--t1);
}
.viewer-mode-subtitle {
  margin-top: 8px;
  font-size: 13px;
  color: var(--t2);
}
.viewer-mode-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

/* ── Amino acid sequence row ── */
.aa-row {
  display: flex; align-items: stretch; gap: 8px;
  min-height: 74px; flex-shrink: 0;
}
.aa-scroll-shell {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.aa-scale {
  position: relative;
  height: 14px;
  margin: 0 2px;
}
.aa-scale-mark {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  line-height: 1;
  color: color-mix(in srgb, var(--t3) 82%, transparent);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.aa-scale-mark.end {
  transform: translateX(-100%);
}
.aa-scroll {
  flex: 1; overflow-x: auto; overflow-y: hidden;
  display: flex; align-items: center;
  border-radius: 3px; background: var(--raised);
  min-height: 52px; cursor: text;
}
.aa-scroll::-webkit-scrollbar { height: 3px; }
.aa-scroll::-webkit-scrollbar-thumb { background: var(--mid); border-radius: 3px; }
.aa {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px; line-height: 52px;
  min-width: 10px; text-align: center;
  color: var(--t3); cursor: pointer;
  transition: background 0.08s;
  flex-shrink: 0;
}
.aa:hover { background: var(--hover); color: var(--t1); }
.aa.unresolved {
  background: transparent !important;
  color: color-mix(in srgb, var(--error) 90%, var(--t1));
  border-top: 1px solid color-mix(in srgb, var(--error) 62%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--error) 62%, transparent);
  box-shadow: none;
}
.aa.unresolved:hover {
  background: transparent !important;
  color: color-mix(in srgb, var(--error) 92%, var(--t1));
  outline: none;
  box-shadow: none;
}
.aa.unresolved-start {
  border-left: 1px solid color-mix(in srgb, var(--error) 82%, transparent);
  border-top-left-radius: 2px;
  border-bottom-left-radius: 2px;
}
.aa.unresolved-end {
  border-right: 1px solid color-mix(in srgb, var(--error) 82%, transparent);
  border-top-right-radius: 2px;
  border-bottom-right-radius: 2px;
}
.aa.unresolved-start.unresolved-end {
  border-left: 1px solid color-mix(in srgb, var(--error) 82%, transparent);
  border-right: 1px solid color-mix(in srgb, var(--error) 82%, transparent);
}
.aa.highlighted {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  color: #fff;
  z-index: 1;
}
.aa.selected {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--t1);
}
.aa.unresolved.selected {
  background: transparent !important;
  outline: none;
  color: color-mix(in srgb, var(--error) 92%, var(--t1));
}
.aa.unresolved.selected:hover {
  background: transparent !important;
  outline: none;
  box-shadow: none;
}
.aa.unresolved.selected-span {
  background: transparent !important;
  color: color-mix(in srgb, var(--error) 96%, var(--t1));
  border-top-color: color-mix(in srgb, var(--error) 88%, transparent);
  border-bottom-color: color-mix(in srgb, var(--error) 88%, transparent);
}
.aa.unresolved.selected-span:hover {
  background: transparent !important;
  color: color-mix(in srgb, var(--error) 98%, var(--t1));
}
.aa.unresolved.selected-span-start {
  border-left: 1px solid color-mix(in srgb, var(--error) 88%, transparent);
  border-top-left-radius: 2px;
  border-bottom-left-radius: 2px;
}
.aa.unresolved.selected-span-end {
  border-right: 1px solid color-mix(in srgb, var(--error) 88%, transparent);
  border-top-right-radius: 2px;
  border-bottom-right-radius: 2px;
}
.aa.unresolved.selected-span-start.selected-span-end {
  border-left: 1px solid color-mix(in srgb, var(--error) 88%, transparent);
  border-right: 1px solid color-mix(in srgb, var(--error) 88%, transparent);
}
@media (max-width: 1400px) {
  .viewer-topbar {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 12px;
  }
  .vtb-right { gap: 6px; }
  .vtb-btn { padding: 8px 13px; }
  .vtb-structure-title { max-width: 320px; }
  .vtb-search-gap { width: 6px; flex-basis: 6px; }
  .vtb-seq-search-label { display: none; }
  .vtb-seq-search-input { width: 148px; }
}

@media (max-width: 980px) {
  .viewer-screen {
    background:
      radial-gradient(circle at 55% 32%, color-mix(in srgb, var(--accent) 14%, transparent) 0%, transparent 34%),
      radial-gradient(circle at 84% 18%, color-mix(in srgb, var(--a2) 12%, transparent) 0%, transparent 26%),
      var(--void);
    justify-content: center;
    padding: 22px 16px;
  }
  .viewer-screen.preparing {
    visibility: visible;
  }
  .viewer-topbar,
  .pdb-title-bar,
  .viewer-body,
  .viewer-mode-overlay {
    display: none !important;
  }
  .viewer-mobile-guard {
    display: flex;
    width: 100%;
    justify-content: center;
    align-items: center;
  }
}

/* ── SCROLLBAR (improved) ── */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--raised); border-radius: 5px; }
::-webkit-scrollbar-thumb { background: var(--mid); border-radius: 5px; min-height: 40px; }
::-webkit-scrollbar-thumb:hover { background: var(--bright); }

/* Firefox scrollbar */
* {
  scrollbar-width: auto;
  scrollbar-color: var(--mid) var(--raised);
}