/* Spxtacular — visual language aligned with protein.tacular.dev / peptide / fasta viewers */

:root {
  --bg: #f6f7fb;
  --bg-elev: #ffffff;
  --fg: #0f172a;
  --fg-soft: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --accent: #4f46e5;
  --accent-2: #7c3aed;
  --accent-soft: #eef2ff;
  --row-hover: #f1f5f9;
  --row-active: #e0e7ff;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 6px 16px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.10);
  --gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 55%, #ec4899 100%);

  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 22px;
  position: sticky;
  top: 0;
  background: var(--gradient);
  color: white;
  z-index: 10;
  box-shadow: var(--shadow);
}
.topbar h1 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.topbar h1::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.95), rgba(255,255,255,0.55) 35%, rgba(255,255,255,0) 70%),
    conic-gradient(from 200deg, #fcd34d, #f472b6, #60a5fa, #34d399, #fcd34d);
  box-shadow: 0 0 0 2px rgba(255,255,255,0.18), inset 0 0 6px rgba(0,0,0,0.25);
}
.topbar .subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  flex: 1;
  font-weight: 400;
  letter-spacing: 0.01em;
}

/* ---------- Container ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 20px 24px 60px; }

/* ---------- Cards (controls / panels) ---------- */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  margin-top: 14px;
}
.card:first-of-type { margin-top: 0; }
#process-panel { display: none; }
#process-panel.visible { display: block; }
.card h2 {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--fg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.card h2 .hint {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  text-transform: none;
  letter-spacing: normal;
}

.subsection-title {
  margin: 18px 0 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  font-weight: 700;
  color: var(--fg);
  display: flex;
  align-items: center;
  gap: 12px;
}
.subsection-title .hint {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
}
.control-group { display: flex; flex-direction: column; gap: 5px; flex: 0 0 auto; }
.control-group label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
}
.control-group.usi-group { flex: 1 1 320px; min-width: 280px; }

/* ---------- Inputs ---------- */
input[type="text"],
input[type="number"],
select,
textarea {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  background: white;
  color: var(--fg);
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input[type="text"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}
.controls .usi-group input[type="text"] { font-family: var(--mono); width: 100%; }
select { cursor: pointer; }

/* ---------- Buttons ---------- */
.btn {
  border: 1px solid var(--border);
  background: white;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  color: var(--fg-soft);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: border-color 0.15s, color 0.15s, background 0.15s, box-shadow 0.15s, transform 0.05s;
}
.btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn.primary {
  background: var(--gradient);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
  font-weight: 600;
}
.btn.primary:hover:not(:disabled) {
  filter: brightness(1.06);
  color: white;
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
}
.btn[disabled], .btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.copied {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}

/* ---------- Status ---------- */
#status {
  margin-top: 14px;
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 13px;
  display: none;
  border: 1px solid transparent;
}
#status.info { display: block; background: var(--accent-soft); color: var(--accent); border-color: rgba(79, 70, 229, 0.2); }
#status.error { display: block; background: #fef2f2; color: #991b1b; border-color: #fecaca; }
#status.success { display: block; background: #f0fdf4; color: #166534; border-color: #bbf7d0; }

/* ---------- Spectrum info row ---------- */
#spectrum-info {
  margin-top: 12px;
  display: none;
  gap: 8px;
  flex-wrap: wrap;
}
#spectrum-info.visible { display: flex; }
.info-chip {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 11px;
  font-size: 12px;
  background: var(--bg-elev);
  color: var(--muted);
  transition: border-color 0.15s, background 0.15s;
}
.info-chip:hover { border-color: var(--border-strong); background: var(--bg); }
.info-chip span {
  font-weight: 700;
  color: var(--fg);
  margin-left: 4px;
  font-variant-numeric: tabular-nums;
}

/* ---------- Pipeline steps ---------- */
.row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: stretch;
}
.row + .row { margin-top: 10px; }

.step {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  flex: 1;
  min-width: 280px;
  background: var(--bg);
  transition: border-color 0.15s, background 0.15s;
}
.step:hover { border-color: var(--border-strong); }
.step:has(.step-toggle > input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.step .step-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  white-space: nowrap;
  cursor: pointer;
}
.step .step-toggle input { accent-color: var(--accent); }
.step input[type="number"],
.step input[type="text"],
.step select {
  padding: 5px 9px;
  font-size: 12px;
  border-radius: 6px;
  background: white;
}
.step .num-input { width: 6.5rem; }
.step .tiny-label {
  font-size: 10px;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.5px;
  font-weight: 600;
}
.step .hint {
  font-size: 11px;
  color: var(--muted);
  font-style: italic;
}

.iontypes {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}
.iontypes label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  background: white;
  font-family: var(--mono);
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.iontypes label:hover { border-color: var(--accent); color: var(--accent); }
.iontypes label:has(input:checked) {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.iontypes input { accent-color: var(--accent); }

.pipeline-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 12px;
}
#process-hint, #match-summary {
  font-size: 12px;
  color: var(--muted);
  margin-left: auto;
}

/* ---------- Plot ---------- */
#plot-container {
  margin-top: 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  min-height: 500px;
  padding: 6px;
}

/* ---------- Fragment ion match table ---------- */
#match-table:empty { display: none; }
#match-table {
  margin-top: 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.frag-title {
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 700;
  color: var(--fg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.frag-legend {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}
.frag-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}
.frag-table th,
.frag-table td {
  padding: 6px 12px;
  text-align: center;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
.frag-table tbody tr:last-child td { border-bottom: none; }
.frag-table thead th {
  position: sticky;
  top: 0;
  background: var(--bg);
  font-weight: 700;
  font-size: 11px;
  z-index: 1;
}
.frag-table th.pos,
.frag-table td.pos {
  color: var(--muted);
  font-size: 11px;
  width: 2.5em;
}
.frag-table th.res,
.frag-table td.res {
  font-weight: 700;
  color: var(--fg);
  background: var(--bg);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  width: 2.5em;
}
.frag-table td.frag-cell { color: var(--fg-soft); }
.frag-table td.frag-cell.empty { color: var(--border-strong); }
.frag-table td.frag-cell.matched {
  color: #1e1b4b;
  font-weight: 700;
}
.frag-table td.frag-cell.matched sup {
  font-size: 0.72em;
  font-weight: 600;
  opacity: 0.85;
  margin-left: 1px;
}
.frag-table tbody tr:hover td:not(.matched):not(.res) { background: var(--row-hover); }

/* ---------- Spinner ---------- */
.spinner {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .container { padding: 14px 14px 40px; }
  .control-group.usi-group { flex-basis: 100%; }
  .step { min-width: 100%; }
}