/* ===== Layout ===== */
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #2a2a2a;
  background: #f3f4f6;
  overflow: hidden;
}

#app {
  display: grid;
  grid-template-columns: 410px 1fr;
  height: 100vh;
}

#controls {
  background: #fff;
  border-right: 1px solid #d8dbe0;
  padding: 16px;
  overflow-y: auto;
}
#controls h1 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 12px 0;
  color: #1a2a44;
}

/* ===== Tab bar ===== */
#tab-bar {
  display: flex;
  gap: 2px;
  margin-bottom: 12px;
  border-bottom: 1px solid #d8dbe0;
}
#tab-bar .tab-btn {
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  padding: 6px 14px;
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  color: #5677a8;
  border-radius: 4px 4px 0 0;
  margin-bottom: -1px;
}
#tab-bar .tab-btn:hover { background: #eef2f7; }
#tab-bar .tab-btn.active {
  background: #fff;
  border-color: #d8dbe0;
  color: #1a2a44;
  font-weight: 600;
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

#plot-area {
  position: relative;
  overflow: hidden;
  background: #fafafa;
}
#canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

#plot-overlay {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 6px;
  background: rgba(255,255,255,0.85);
  border: 1px solid #d8dbe0;
  border-radius: 6px;
  padding: 4px 6px;
  font-size: 12px;
  user-select: none;
}
#plot-overlay button {
  background: transparent;
  border: 1px solid transparent;
  padding: 4px 8px;
  font: inherit;
  cursor: pointer;
  border-radius: 4px;
  color: #1a3e7a;
}
#plot-overlay button:hover { background: #eef2f7; }

#plot-readout {
  position: absolute;
  bottom: 8px;
  left: 12px;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 11px;
  color: #555;
  background: rgba(255,255,255,0.75);
  padding: 2px 6px;
  border-radius: 4px;
  pointer-events: none;
}

/* ===== Cards ===== */
.card {
  background: #fff;
  border: 1px solid #e3e5ea;
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 12px;
}
.card h2 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #5677a8;
  margin: 0 0 8px 0;
}
.card .hint {
  font-size: 11px;
  color: #777;
  margin-bottom: 6px;
}

/* ===== Inputs ===== */
input[type="text"], input[type="number"], select {
  font: inherit;
  font-size: 13px;
  padding: 4px 6px;
  border: 1px solid #c5c9d2;
  border-radius: 4px;
  background: #fff;
  color: #1a2a44;
}
input[type="text"]:focus, input[type="number"]:focus, select:focus {
  outline: none;
  border-color: #5677a8;
  box-shadow: 0 0 0 2px rgba(86, 119, 168, 0.18);
}
input.invalid { border-color: #b53030; background: #fcf2f2; }
input[type="text"].cnum { width: 100px; font-family: ui-monospace, "SF Mono", Consolas, monospace; }

/* 1-D sliders (magnitude / argument) attached to residue inputs */
.residue-block {
  margin: 4px 0;
  padding: 4px 0;
  border-top: 1px dashed #e8eaef;
}
.residue-block:first-child { border-top: none; padding-top: 0; }

.slider1d-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 2px 0 2px 12px;
}
.slider1d-row > label {
  width: 28px;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 11px;
  color: #5677a8;
}
.slider1d {
  flex: 1 1 auto;
  min-width: 80px;
  height: 16px;
  margin: 0;
  accent-color: #5677a8;
}
.slider1d-val {
  font-family: ui-monospace, monospace;
  font-size: 10px;
  width: 56px;
  text-align: right;
  color: #555;
}

label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  margin: 3px 0;
}
.row { display: flex; align-items: center; gap: 8px; margin: 4px 0; flex-wrap: wrap; }

button {
  font: inherit;
  font-size: 13px;
  padding: 5px 10px;
  border: 1px solid #c5c9d2;
  background: #fff;
  border-radius: 4px;
  cursor: pointer;
  color: #1a2a44;
}
button:hover { background: #eef2f7; border-color: #5677a8; }
button.primary { background: #5677a8; color: #fff; border-color: #5677a8; }
button.primary:hover { background: #4a6792; }
button.small { padding: 2px 7px; font-size: 12px; }
button.danger { color: #b53030; border-color: #e2c4c4; }
button.danger:hover { background: #fceeee; }

/* ===== Pole entries ===== */
.pole {
  border: 1px solid #e3e5ea;
  border-radius: 5px;
  padding: 8px 10px;
  margin-bottom: 8px;
  background: #fbfcfd;
}
.pole-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.pole-num {
  font-weight: 600;
  font-size: 12px;
  color: #5677a8;
}
.residues { margin-top: 5px; }
.residue-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 3px 0;
  font-size: 13px;
}
.residue-row .label-fixed {
  width: 38px;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  color: #5677a8;
}

/* ===== Status ===== */
#status {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 12px;
  line-height: 1.55;
}
#status .ok    { color: #2a8f2a; font-weight: 600; }
#status .warn  { color: #b8860b; font-weight: 600; }
#status .err   { color: #b53030; font-weight: 600; }
#status .key   { color: #777; }

#alternates-card .alt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0;
  font-size: 13px;
  border-bottom: 1px dashed #eee;
}
#alternates-card .alt:last-child { border-bottom: none; }

/* ===== Riemann map formula card (KaTeX-typeset) ===== */
.rm-sym {
  background: #f4f6fb;
  border-left: 3px solid #5677a8;
  padding: 6px 10px;
  margin: 4px 0 10px 0;
  overflow-x: auto;
}
.rm-sym .katex { font-size: 0.88em; }

.rm-section { margin-top: 8px; }
.rm-section > summary {
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  color: #5677a8;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  user-select: none;
  padding: 2px 0;
}
.rm-section > summary:hover { color: #3a5680; }

.rm-numer {
  padding: 4px 0 4px 4px;
  overflow-x: auto;
}
.rm-numer .katex { font-size: 0.85em; }
.rm-numer .katex-display { margin: 4px 0; }

table.rm-params {
  width: 100%;
  border-collapse: collapse;
  margin-top: 6px;
  font-size: 12px;
}
table.rm-params td {
  padding: 4px 8px;
  border-bottom: 1px solid #eef0f4;
  vertical-align: middle;
}
table.rm-params tr:last-child td { border-bottom: none; }
table.rm-params td.rm-name {
  width: 1%;            /* shrink-to-fit */
  white-space: nowrap;
  text-align: right;
  color: #1a3e7a;
  background: #f7f9fc;
}
table.rm-params td.rm-value {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  color: #1a2a44;
  word-break: break-word;
}
table.rm-params td.rm-name .katex { font-size: 1em; }

.hidden { display: none !important; }

.search-spinner {
  display: inline-block;
  width: 10px; height: 10px;
  border: 2px solid #c5c9d2;
  border-top-color: #5677a8;
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  vertical-align: middle;
  margin-right: 4px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Search options (advanced) panel ===== */
.search-opt-group {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed #d8dbe0;
}
.search-opt-group-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #555;
  margin-bottom: 6px;
}
input.so-num {
  width: 100px;
  font-family: inherit;
  font-size: 12px;
}

/* Domain-type sub-grouping (Classical QD vs Log-weighted QD) */
.domain-mode-group {
  margin-bottom: 8px;
}
.domain-mode-group:last-of-type {
  margin-bottom: 0;
}
.domain-mode-group-label {
  font-size: 10px;
  color: #777;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 3px;
  font-weight: 500;
}