/* ═══════════════════════════════════════════════════════
   Protein Viewer (AlphaFold) — styles
   ═══════════════════════════════════════════════════════ */

.pv-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.pv-header {
  margin-bottom: 1.5rem;
}

.pv-header-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: #e6edf3;
}

.pv-header-sub {
  margin-top: 0.25rem;
  font-size: 0.8rem;
  color: #8b949e;
}

/* ── Search row ── */
.pv-search-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.pv-search-input {
  flex: 1;
  padding: 0.55rem 0.85rem;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 6px;
  color: #e6edf3;
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
  min-width: 0;
}

.pv-gene-input {
  flex: 0 0 180px;
}

.pv-search-input:focus {
  border-color: #58a6ff;
}

.pv-search-input::placeholder {
  color: #484f58;
}

.pv-search-btn {
  padding: 0.55rem 1.1rem;
  background: #238636;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}

.pv-search-btn:hover {
  background: #2ea043;
}

/* ── Pre-loaded proteins ── */
.pv-preloaded {
  margin-bottom: 1.5rem;
}

.pv-preloaded-label {
  font-size: 0.75rem;
  color: #484f58;
  margin-bottom: 0.5rem;
}

.pv-preloaded-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pv-protein-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.35rem 0.7rem;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  font-family: inherit;
}

.pv-protein-chip:hover {
  background: rgba(88, 166, 255, 0.07);
  border-color: #58a6ff;
}

.pv-chip-gene {
  font-size: 0.78rem;
  font-weight: 700;
  color: #58a6ff;
}

.pv-chip-acc {
  font-size: 0.66rem;
  color: #484f58;
  font-family: 'Cascadia Code', 'Fira Mono', monospace;
}

/* ── Protein card ── */
.pv-protein-card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 10px;
  overflow: hidden;
}

.pv-protein-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid #21262d;
  gap: 1rem;
}

.pv-protein-name {
  font-size: 1rem;
  font-weight: 700;
  color: #e6edf3;
  line-height: 1.4;
}

.pv-protein-gene {
  font-size: 0.8rem;
  color: #8b949e;
  margin-top: 0.2rem;
}

.pv-protein-gene strong {
  color: #3fb950;
}

.pv-protein-meta {
  font-size: 0.75rem;
  color: #484f58;
  margin-top: 0.3rem;
}

.pv-protein-meta span + span {
  margin-left: 0;
}

.pv-af-link {
  padding: 0.35rem 0.8rem;
  background: rgba(88, 166, 255, 0.08);
  border: 1px solid rgba(88, 166, 255, 0.3);
  border-radius: 6px;
  font-size: 0.75rem;
  color: #58a6ff;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.15s;
}

.pv-af-link:hover {
  background: rgba(88, 166, 255, 0.16);
}

.pv-function {
  padding: 0.75rem 1.25rem;
  font-size: 0.8rem;
  color: #8b949e;
  line-height: 1.65;
  border-bottom: 1px solid #21262d;
}

/* ── pLDDT chart ── */
.pv-chart-wrap {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #21262d;
}

.pv-chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
  font-size: 0.8rem;
  color: #e6edf3;
  font-weight: 600;
}

.pv-avg-score {
  font-size: 0.75rem;
  color: #8b949e;
  font-weight: 400;
}

.pv-avg-score strong {
  color: #e6edf3;
}

.pv-chart-svg {
  display: block;
  width: 100%;
  height: 120px;
  border-radius: 6px;
  overflow: hidden;
}

.pv-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.6rem;
}

.pv-no-chart {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: #484f58;
}

/* ── 3D viewer ── */
.pv-3d-section {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #21262d;
}

.pv-3d-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: #e6edf3;
  margin-bottom: 0.75rem;
}

.pv-3d-frame-wrap {
  width: 100%;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #30363d;
  background: #0d1117;
}

.pv-3d-frame {
  display: block;
  width: 100%;
  height: 460px;
  border: none;
}

.pv-3d-note {
  font-size: 0.72rem;
  color: #484f58;
  margin-top: 0.5rem;
}

/* ── Downloads ── */
.pv-download-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.9rem 1.25rem;
}

.pv-dl-btn {
  padding: 0.38rem 0.85rem;
  background: #238636;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
}

.pv-dl-btn:hover {
  background: #2ea043;
}

.pv-dl-btn.pv-dl-secondary {
  background: #21262d;
  color: #8b949e;
  border: 1px solid #30363d;
}

.pv-dl-btn.pv-dl-secondary:hover {
  color: #e6edf3;
  border-color: #58a6ff;
}

/* ── States ── */
.pv-loading,
.pv-empty,
.pv-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 3rem 1rem;
  font-size: 0.85rem;
  color: #484f58;
  text-align: center;
}

.pv-error {
  flex-direction: row;
  color: #ff6b6b;
  font-size: 0.82rem;
}

.pv-spinner {
  width: 22px;
  height: 22px;
  border: 2px solid #30363d;
  border-top-color: #58a6ff;
  border-radius: 50%;
  animation: pv-spin 0.7s linear infinite;
}

@keyframes pv-spin {
  to { transform: rotate(360deg); }
}

/* ── Responsive ── */
@media (max-width: 650px) {
  .pv-search-row {
    flex-wrap: wrap;
  }

  .pv-gene-input {
    flex: 1 0 120px;
  }

  .pv-search-btn {
    width: 100%;
  }

  .pv-protein-header {
    flex-direction: column;
  }

  .pv-3d-frame {
    height: 320px;
  }

  .pv-chart-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}