/* ============================================================================
   chord-analyzer.css — dark theme, teal accent (matches Guitar Kit)
   ========================================================================== */

:root {
  --ca-bg:        #0c0e10;
  --ca-bg-2:      #14171a;
  --ca-panel:     #191d21;
  --ca-panel-2:   #1f242a;
  --ca-line:      #2a3037;
  --ca-line-soft: #22272c;

  --ca-text:      #e8edf1;
  --ca-text-2:    #9aa5af;
  --ca-text-3:    #667079;

  --ca-teal:      #2dd4bf;
  --ca-teal-dim:  #14b8a6;
  --ca-teal-glow: rgba(45, 212, 191, 0.35);
  --ca-amber:     #f4a742;

  --ca-radius:    10px;
  --ca-radius-sm: 6px;

  --font-body: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(45,212,191,0.07), transparent 60%),
    var(--ca-bg);
  color: var(--ca-text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

.ca-app { max-width: 1080px; margin: 0 auto; padding: 22px 18px 60px; }

h2, h3 { margin: 0; font-weight: 700; letter-spacing: -0.01em; }

kbd {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--ca-panel-2);
  border: 1px solid var(--ca-line);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--ca-text-2);
}

.ca-noscript {
  max-width: 1080px;
  margin: 18px auto;
  padding: 16px 20px;
  background: var(--ca-panel);
  border: 1px solid var(--ca-amber);
  border-radius: var(--ca-radius);
}

/* ------------------------------------------------------------------ header */

.ca-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  padding: 16px 20px;
  background: linear-gradient(180deg, var(--ca-panel), var(--ca-bg-2));
  border: 1px solid var(--ca-line);
  border-radius: var(--ca-radius);
}

.ca-brand { display: flex; align-items: center; gap: 16px; margin-right: auto; }

/* Site logo (same artwork as the main site header) — links home. */
.ca-logo-link { display: block; line-height: 0; border-radius: 6px; }
.ca-logo-link:focus-visible { outline: 2px solid var(--ca-teal); outline-offset: 4px; }
.ca-logo { height: 46px; width: auto; display: block; transition: opacity .15s; }
.ca-logo-link:hover .ca-logo { opacity: 0.85; }

.ca-brand-divider { width: 1px; height: 38px; background: var(--ca-line); }
.ca-tool-name { display: flex; flex-direction: column; line-height: 1.2; }
.ca-tool-name strong { font-size: 1rem; font-weight: 700; color: var(--ca-text); }
.ca-tool-name span {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ca-text-3);
}

.ca-visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ----------------------------------------------------------------- toolbar */

.ca-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }

.ca-field {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ca-text-3);
}

.ca-select {
  padding: 8px 11px;
  background: var(--ca-bg);
  border: 1px solid var(--ca-line);
  border-radius: var(--ca-radius-sm);
  color: var(--ca-text);
  font-family: var(--font-body);
  font-size: 0.85rem;
  cursor: pointer;
}
.ca-select:focus { outline: none; border-color: var(--ca-teal); }

.ca-btn {
  padding: 8px 16px;
  background: var(--ca-panel-2);
  border: 1px solid var(--ca-line);
  border-radius: var(--ca-radius-sm);
  color: var(--ca-text);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.ca-btn:hover { background: #262c33; border-color: #37404a; }
.ca-btn:focus-visible { outline: 2px solid var(--ca-teal); outline-offset: 2px; }

/* Flats toggle switch */
.ca-switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.ca-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.ca-switch .ca-track {
  position: relative;
  width: 38px; height: 21px;
  background: var(--ca-line);
  border-radius: 11px;
  transition: background .18s;
}
.ca-switch .ca-track::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 15px; height: 15px;
  background: #7d8892;
  border-radius: 50%;
  transition: transform .18s, background .18s;
}
.ca-switch input:checked + .ca-track { background: rgba(45,212,191,.3); }
.ca-switch input:checked + .ca-track::after {
  transform: translateX(17px);
  background: var(--ca-teal);
}
.ca-switch input:focus-visible + .ca-track { outline: 2px solid var(--ca-teal); outline-offset: 2px; }

/* --------------------------------------------------------------- fretboard */

.ca-board-wrap {
  margin-top: 16px;
  padding: 18px;
  background: var(--ca-panel);
  border: 1px solid var(--ca-line);
  border-radius: var(--ca-radius);
  overflow-x: auto;    /* 15 frets are wide — scroll on tablet instead of squashing */
}

/* 17 columns: string label + mute/open + 15 frets. The counts on the header
   row and every string row match, so the grid stays perfectly aligned. */
#ca-fretboard {
  min-width: 900px;
  display: grid;
  grid-template-columns: 58px 44px repeat(15, minmax(34px, 1fr));
  gap: 3px;
  user-select: none;
}

.ca-string-label {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ca-text-3);
  background: var(--ca-bg-2);
  border-radius: 4px;
  min-height: 30px;
}
.ca-string-label.ca-open-note { color: var(--ca-text); background: var(--ca-panel-2); }
.ca-string-label.ca-marker { color: var(--ca-teal); }

.ca-cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  background: var(--ca-panel-2);
  border: 1px solid var(--ca-line-soft);
  border-radius: var(--ca-radius-sm);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--ca-text);
  transition: background .1s, border-color .1s, transform .06s;
}
.ca-cell:hover { background: #2b323a; border-color: #3a434d; }
.ca-cell:active { transform: scale(0.95); }

/* Fret-marker inlay dot on empty marker cells */
.ca-cell.mark:not(.active)::before {
  content: '';
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ca-line);
}

.ca-cell.active {
  background: linear-gradient(180deg, var(--ca-teal), var(--ca-teal-dim));
  border-color: var(--ca-teal);
  color: #062b26;
  box-shadow: 0 0 12px var(--ca-teal-glow);
}

.ca-cell.ca-mo { color: var(--ca-text-3); }
.ca-cell.ca-mo.open { color: var(--ca-teal); border-color: var(--ca-teal); }
.ca-cell.ca-mo.mute { color: var(--ca-text-3); }

.ca-hint { margin: 14px 0 0; font-size: 0.8rem; color: var(--ca-text-3); }
.ca-hint strong { color: var(--ca-text-2); font-weight: 600; }

/* ----------------------------------------------------------------- result */

.ca-result {
  margin-top: 16px;
  padding: 18px 20px 22px;
  background: var(--ca-panel);
  border: 1px solid var(--ca-line);
  border-radius: var(--ca-radius);
}
.ca-result h2 {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ca-teal);
  margin-bottom: 14px;
}

.ca-chords { display: flex; flex-wrap: wrap; gap: 10px; min-height: 40px; align-items: center; }

.ca-chord-pill {
  padding: 8px 16px;
  background: var(--ca-panel-2);
  border: 1px solid var(--ca-line);
  border-radius: 20px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ca-text);
}
.ca-chord-pill.primary {
  background: rgba(45,212,191,0.14);
  border-color: var(--ca-teal);
  color: var(--ca-teal);
  box-shadow: 0 0 14px var(--ca-teal-glow);
}

.ca-empty { color: var(--ca-text-3); font-size: 0.9rem; }

.ca-notes {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ca-text-2);
}

/* -------------------------------------------------------------- responsive */

@media (max-width: 700px) {
  .ca-app { padding: 14px 12px 50px; }
  .ca-header { gap: 14px; padding: 14px; }
  .ca-brand-divider, .ca-tool-name { display: none; }
  .ca-logo { height: 38px; }
  .ca-toolbar { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}