/* GlobalVet ECG & Cardiology Academy — interactive tool styles (original code).
   Everything is scoped under .gcd-tool so the widgets can be mounted anywhere.
   Palette follows the course dark theme: ink #F3EEDD, muted #8A94A0, copper #C4A574,
   cyan #5FD3F3, green #4CC38A, amber #F2B84B, red #F26D6D, panel #0E1620, line #2A3947. */
.gcd-tool {
  --gcd-bg: #0B1118;
  --gcd-panel: #0E1620;
  --gcd-panel-2: #12202C;
  --gcd-line: #2A3947;
  --gcd-ink: #F3EEDD;
  --gcd-ink-2: #D7D2C2;
  --gcd-muted: #8A94A0;
  --gcd-copper: #C4A574;
  --gcd-copper-2: #E4C89B;
  --gcd-cyan: #5FD3F3;
  --gcd-green: #4CC38A;
  --gcd-amber: #F2B84B;
  --gcd-red: #F26D6D;
  --gcd-sans: 'Source Sans 3', 'Segoe UI', Helvetica, Arial, sans-serif;
  --gcd-serif: Georgia, 'Times New Roman', serif;
  --gcd-mono: ui-monospace, 'SF Mono', 'Cascadia Mono', Menlo, Consolas, monospace;
  color: var(--gcd-ink);
  font-family: var(--gcd-sans);
  font-size: 16px;
  line-height: 1.55;
  min-width: 0;
}
.gcd-tool *, .gcd-tool *::before, .gcd-tool *::after { box-sizing: border-box; }
.gcd-tool h2, .gcd-tool h3, .gcd-tool h4 { font-family: var(--gcd-serif); font-weight: 500; line-height: 1.25; margin: 0 0 8px; color: var(--gcd-ink); }
.gcd-tool h2 { font-size: 21px; }
.gcd-tool h3 { font-size: 18px; }
.gcd-tool h4 { font-size: 16px; }
.gcd-tool p { margin: 8px 0; overflow-wrap: anywhere; }
.gcd-tool ul { margin: 8px 0; padding-left: 20px; }
.gcd-tool li { margin: 4px 0; overflow-wrap: anywhere; }
.gcd-tool b { font-weight: 650; }
.gcd-tool .gcd-lead { color: var(--gcd-ink-2); font-size: 15px; margin: 2px 0 14px; }
.gcd-tool .gcd-muted { color: var(--gcd-muted); font-size: 14px; }
.gcd-tool .gcd-small { font-size: 13px; }

/* layout */
.gcd-tool .gcd-head { border-bottom: 1px solid var(--gcd-line); padding-bottom: 12px; margin-bottom: 16px; }
.gcd-tool .gcd-kicker { font-family: var(--gcd-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--gcd-copper); }
.gcd-tool .gcd-cols { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 18px; align-items: start; }
.gcd-tool .gcd-stack { display: grid; gap: 14px; min-width: 0; }
.gcd-tool .gcd-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.gcd-tool .gcd-field { display: grid; gap: 5px; min-width: 0; }
.gcd-tool .gcd-field.wide { grid-column: span 2; }
.gcd-tool .gcd-field > span, .gcd-tool .gcd-legend {
  font-family: var(--gcd-mono); font-size: 11px; letter-spacing: .08em;
  text-transform: uppercase; color: var(--gcd-muted);
}
.gcd-tool input[type="number"], .gcd-tool input[type="text"], .gcd-tool input[type="date"], .gcd-tool select {
  width: 100%; min-width: 0; background: var(--gcd-panel); border: 1px solid var(--gcd-line);
  color: var(--gcd-ink); border-radius: 10px; padding: 10px 12px;
  font-family: var(--gcd-sans); font-size: 16px;
}
.gcd-tool input:focus, .gcd-tool select:focus, .gcd-tool button:focus-visible {
  outline: 2px solid var(--gcd-copper); outline-offset: 1px;
}
.gcd-tool .gcd-check {
  display: flex; gap: 10px; align-items: flex-start; margin: 8px 0;
  font-size: 15px; color: var(--gcd-ink-2); text-transform: none; letter-spacing: 0;
}
.gcd-tool .gcd-check input { width: 19px; height: 19px; margin-top: 2px; flex: none; accent-color: var(--gcd-copper); }
.gcd-tool .gcd-radios { display: flex; flex-wrap: wrap; gap: 8px; }
.gcd-tool .gcd-radios label {
  display: inline-flex; gap: 7px; align-items: center; background: var(--gcd-panel);
  border: 1px solid var(--gcd-line); border-radius: 99px; padding: 7px 12px;
  font-size: 14px; color: var(--gcd-ink-2); cursor: pointer; text-transform: none; letter-spacing: 0;
}
.gcd-tool .gcd-radios input { accent-color: var(--gcd-copper); }
.gcd-tool button.gcd-btn {
  background: var(--gcd-copper); color: #14100A; border: 1px solid var(--gcd-copper);
  border-radius: 10px; padding: 10px 16px; font-size: 15px; font-weight: 650; cursor: pointer;
  font-family: var(--gcd-sans);
}
.gcd-tool button.gcd-btn.ghost { background: transparent; color: var(--gcd-ink-2); border-color: var(--gcd-line); }
.gcd-tool button.gcd-btn:hover { filter: brightness(1.06); }

/* results */
.gcd-tool .gcd-result {
  background: var(--gcd-panel); border: 1px solid var(--gcd-line); border-radius: 14px;
  padding: 16px 18px; min-width: 0;
}
.gcd-tool .gcd-result.empty { color: var(--gcd-muted); font-size: 14px; }
.gcd-tool .gcd-big {
  font-family: var(--gcd-mono); font-size: 32px; font-weight: 600; line-height: 1.1;
  color: var(--gcd-copper-2); overflow-wrap: anywhere;
}
.gcd-tool .gcd-big .gcd-unit { font-size: 15px; color: var(--gcd-muted); font-weight: 400; }
.gcd-tool .gcd-sub { font-family: var(--gcd-mono); font-size: 14px; color: var(--gcd-ink-2); margin: 6px 0 2px; }
.gcd-tool .gcd-band-row {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 4px;
}
.gcd-tool .gcd-chip {
  border: 1px solid var(--gcd-line); border-radius: 99px; padding: 4px 11px;
  font-family: var(--gcd-mono); font-size: 12px; letter-spacing: .04em; color: var(--gcd-ink-2);
}
.gcd-tool .gcd-chip.ok { border-color: rgba(76,195,138,.55); color: var(--gcd-green); }
.gcd-tool .gcd-chip.warn { border-color: rgba(242,184,75,.5); color: var(--gcd-amber); }
.gcd-tool .gcd-chip.bad { border-color: rgba(242,109,109,.5); color: var(--gcd-red); }
.gcd-tool .gcd-chip.info { border-color: rgba(95,211,234,.45); color: var(--gcd-cyan); }
.gcd-tool .gcd-callout {
  border-radius: 10px; padding: 10px 13px; margin: 10px 0; font-size: 14.5px; line-height: 1.5;
  border: 1px solid rgba(196,165,116,.42); background: rgba(196,165,116,.07); color: var(--gcd-ink-2);
}
.gcd-tool .gcd-callout.warn { border-color: rgba(242,184,75,.42); background: rgba(242,184,75,.07); }
.gcd-tool .gcd-callout.bad { border-color: rgba(242,109,109,.42); background: rgba(242,109,109,.08); color: #F6C8C8; }
.gcd-tool .gcd-callout.ok { border-color: rgba(76,195,138,.42); background: rgba(76,195,138,.07); }
.gcd-tool .gcd-dose {
  font-family: var(--gcd-mono); font-size: 13px; letter-spacing: .02em; color: var(--gcd-copper-2);
  border-top: 1px dashed var(--gcd-line); padding-top: 8px; margin-top: 10px; overflow-wrap: anywhere;
}
.gcd-tool .gcd-src {
  font-size: 12.5px; color: var(--gcd-muted); border-top: 1px solid var(--gcd-line);
  margin-top: 12px; padding-top: 9px; overflow-wrap: anywhere;
}
.gcd-tool .gcd-tbl { width: 100%; border-collapse: collapse; font-size: 14px; margin: 10px 0; }
.gcd-tool .gcd-tbl th, .gcd-tool .gcd-tbl td {
  border: 1px solid var(--gcd-line); padding: 7px 10px; text-align: left; vertical-align: top;
  overflow-wrap: anywhere;
}
.gcd-tool .gcd-tbl th { color: var(--gcd-muted); font-family: var(--gcd-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; }
.gcd-tool .gcd-tbl td.num { font-family: var(--gcd-mono); white-space: nowrap; }

/* strips + diagrams */
.gcd-tool .gcd-strip { background: var(--gcd-panel); border: 1px solid var(--gcd-line); border-radius: 12px; padding: 10px 10px 2px; overflow: hidden; }
.gcd-tool .gcd-strip svg { display: block; width: 100%; height: auto; }
.gcd-tool .gcd-strip.clickable { cursor: crosshair; position: relative; }
.gcd-tool .gcd-figcap { font-size: 12.5px; color: var(--gcd-muted); margin: 8px 2px 6px; }
.gcd-tool .gcd-diagram svg { display: block; width: 100%; max-width: 360px; height: auto; margin: 6px auto; }

/* drill */
.gcd-tool .gcd-opt {
  display: block; width: 100%; text-align: left; background: var(--gcd-panel);
  border: 1px solid var(--gcd-line); color: var(--gcd-ink); border-radius: 12px;
  padding: 11px 14px; cursor: pointer; font-size: 15px; font-family: var(--gcd-sans); line-height: 1.45;
  margin: 6px 0; overflow-wrap: anywhere;
}
.gcd-tool .gcd-opt:hover { border-color: var(--gcd-copper); }
.gcd-tool .gcd-opt.on { border-color: var(--gcd-copper); background: rgba(196,165,116,.16); }
.gcd-tool .gcd-opt.good { border-color: var(--gcd-green); background: rgba(76,195,138,.12); }
.gcd-tool .gcd-opt.bad { border-color: var(--gcd-red); background: rgba(242,109,109,.12); }
.gcd-tool .gcd-progress { font-family: var(--gcd-mono); font-size: 12px; letter-spacing: .1em; color: var(--gcd-muted); text-transform: uppercase; }

/* timeline */
.gcd-tool .gcd-timeline { list-style: none; margin: 10px 0; padding: 0; display: grid; gap: 10px; }
.gcd-tool .gcd-timeline li {
  display: grid; grid-template-columns: 128px minmax(0, 1fr); gap: 12px;
  border-left: 2px solid var(--gcd-copper); padding: 8px 12px;
  background: rgba(196,165,116,.05); border-radius: 0 10px 10px 0;
}
.gcd-tool .gcd-timeline .gcd-when { font-family: var(--gcd-mono); font-size: 12.5px; color: var(--gcd-copper-2); }
.gcd-tool .gcd-timeline .gcd-what b { display: block; }
.gcd-tool .gcd-timeline .gcd-what span { font-size: 13.5px; color: var(--gcd-ink-2); }

@media (max-width: 860px) {
  .gcd-tool .gcd-cols { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 520px) {
  .gcd-tool { font-size: 15px; }
  .gcd-tool .gcd-big { font-size: 26px; }
  .gcd-tool .gcd-fields { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
  .gcd-tool .gcd-timeline li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}
@media print {
  .gcd-tool .gcd-no-print, .gcd-tool .gcd-fields, .gcd-tool .gcd-radios, .gcd-tool button { display: none !important; }
  .gcd-tool { color: #000; }
  .gcd-tool .gcd-result { border-color: #999; background: #fff; }
  .gcd-tool .gcd-big, .gcd-tool .gcd-dose, .gcd-tool .gcd-timeline .gcd-when { color: #000; }
  .gcd-tool .gcd-print-only { display: block !important; }
}
.gcd-tool .gcd-print-only { display: none; }