:root {
   --bg: #0f1419;
   --card: #1a2332;
   --border: #2d3a4f;
   --text: #e8eef7;
   --muted: #8b9cb3;
   --accent: #3d9cf5;
   --accent-hover: #5ab0ff;
   --ok: #3dd68c;
   --err: #f07178;
   --mono: "Cascadia Code", "Consolas", monospace;
}

* {
   box-sizing: border-box;
}

body {
   margin: 0;
   min-height: 100vh;
   font-family: "Segoe UI", "Microsoft JhengHei", sans-serif;
   background: radial-gradient(ellipse at top, #1a2840 0%, var(--bg) 55%);
   color: var(--text);
   line-height: 1.5;
}

.page {
   max-width: 1080px;
   margin: 0 auto;
   padding: 2rem 1.25rem 3rem;
}

.header h1 {
   margin: 0.25rem 0 0.5rem;
   font-size: 1.75rem;
   font-weight: 600;
}

.eyebrow {
   margin: 0;
   font-size: 0.8rem;
   letter-spacing: 0.12em;
   text-transform: uppercase;
   color: var(--accent);
}

.subtitle {
   margin: 0;
   color: var(--muted);
   font-size: 0.95rem;
}

.card {
   margin-top: 1.25rem;
   padding: 1.25rem 1.35rem;
   background: var(--card);
   border: 1px solid var(--border);
   border-radius: 12px;
}

.card h2 {
   margin: 0 0 1rem;
   font-size: 1rem;
   font-weight: 600;
}

.field {
   display: flex;
   flex-direction: column;
   gap: 0.35rem;
   font-size: 0.85rem;
   color: var(--muted);
}

.field input,
.field select {
   padding: 0.6rem 0.75rem;
   border: 1px solid var(--border);
   border-radius: 8px;
   background: var(--bg);
   color: var(--text);
   font-size: 0.95rem;
}

.form-grid {
   display: grid;
   grid-template-columns: repeat(2, minmax(0, 1fr));
   gap: 0.85rem 1rem;
}

.query-mode {
   display: flex;
   flex-wrap: wrap;
   gap: 1rem 1.5rem;
   margin: 0.85rem 0;
}

.radio-field {
   display: inline-flex;
   align-items: center;
   gap: 0.4rem;
   font-size: 0.92rem;
   cursor: pointer;
}

.field-disabled {
   opacity: 0.45;
   pointer-events: none;
}

.field-disabled.enabled {
   opacity: 1;
   pointer-events: auto;
}

#dataBoundsHint {
   margin: 0.5rem 0 0;
}

.field-wide {
   grid-column: 1 / -1;
}

.checkbox-field {
   display: inline-flex;
   align-items: center;
   gap: 0.45rem;
   font-size: 0.9rem;
   color: var(--muted);
   cursor: pointer;
}

.refresh-field {
   min-width: 200px;
}

.refresh-field select {
   padding: 0.55rem 0.75rem;
   border: 1px solid var(--border);
   border-radius: 8px;
   background: var(--bg);
   color: var(--text);
   font-size: 0.9rem;
}

.actions {
   align-items: flex-end;
}

#chartStatus {
   margin: 0.85rem 0 0;
   font-size: 0.88rem;
   color: var(--muted);
}

#chartStatus.status-err {
   color: var(--err);
}

.chart-card h2 {
   margin-bottom: 0.75rem;
   font-size: 0.95rem;
   color: var(--muted);
   font-weight: 500;
}

.chart-wrap {
   position: relative;
   height: 420px;
}

.btn-ghost {
   background: transparent;
}

.series-toggles {
   display: grid;
   grid-template-columns: repeat(4, minmax(0, 1fr));
   gap: 0.55rem;
}

.series-toggle {
   display: flex;
   align-items: center;
   gap: 0.55rem;
   width: 100%;
   padding: 0.55rem 0.7rem;
   border: 1px solid var(--border);
   border-radius: 8px;
   background: var(--bg);
   color: var(--text);
   font: inherit;
   text-align: left;
   cursor: pointer;
   user-select: none;
   transition: border-color 0.15s, opacity 0.15s;
}

.series-toggle.on {
   border-color: var(--accent);
}

.series-toggle.off {
   opacity: 0.45;
}

.series-toggle .swatch {
   width: 12px;
   height: 12px;
   border-radius: 3px;
   flex-shrink: 0;
}

.series-toggle-text {
   display: flex;
   flex-direction: column;
   gap: 0.1rem;
   line-height: 1.2;
}

.series-toggle-text strong {
   font-size: 0.88rem;
}

.series-toggle-text small {
   font-size: 0.72rem;
   color: var(--muted);
}

.chart-legend-hint {
   margin: 0.75rem 0 0;
   text-align: center;
}

.diagnostics summary {
   cursor: pointer;
   font-weight: 600;
   margin-bottom: 0.75rem;
}

.diagnostics .output {
   margin-top: 0.75rem;
}

.hint {
   margin: 0.75rem 0 0;
   font-size: 0.82rem;
   color: var(--muted);
}

.hint code {
   padding: 0.1rem 0.35rem;
   border-radius: 4px;
   background: var(--bg);
   font-family: var(--mono);
   font-size: 0.8rem;
}

.actions {
   display: flex;
   flex-wrap: wrap;
   gap: 0.6rem;
}

button {
   padding: 0.55rem 1rem;
   border: 1px solid var(--border);
   border-radius: 8px;
   background: var(--bg);
   color: var(--text);
   font-size: 0.9rem;
   cursor: pointer;
   transition: border-color 0.15s, background 0.15s;
}

button:hover {
   border-color: var(--accent);
   background: #152030;
}

button.primary {
   border-color: var(--accent);
   background: var(--accent);
   color: #fff;
}

button.primary:hover {
   background: var(--accent-hover);
}

.output {
   margin: 0;
   padding: 1rem;
   min-height: 12rem;
   overflow: auto;
   border-radius: 8px;
   background: var(--bg);
   border: 1px solid var(--border);
   font-family: var(--mono);
   font-size: 0.82rem;
   white-space: pre-wrap;
   word-break: break-word;
}

.output.ok {
   border-color: var(--ok);
}

.output.err {
   border-color: var(--err);
}

@media (max-width: 900px) {
   .series-toggles {
      grid-template-columns: repeat(2, minmax(0, 1fr));
   }
}

@media (max-width: 640px) {
   .form-grid {
      grid-template-columns: 1fr;
   }

   .series-toggles {
      grid-template-columns: 1fr;
   }

   .chart-wrap {
      height: 300px;
   }
}

.footer {
   margin-top: 2rem;
   display: flex;
   flex-wrap: wrap;
   gap: 0.5rem;
   font-size: 0.8rem;
   color: var(--muted);
}