/* Speaker Impedance Estimator — tool-specific overrides only.
   Hybrid tool: low-frequency sweep/tone PLAYER (Web Audio output, no mic) + series/parallel
   load CALCULATOR + amp-matching check. */

/* ---- hero caveat note (honesty-critical) ---- */
.imp-warn-note {
  max-width: 860px; margin: var(--space-md) auto 0;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border); border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm); background: rgba(255, 0, 144, 0.05);
  color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.55; text-align: left;
}
.imp-warn-note strong { color: var(--color-text-bright); }

/* ---- section headings inside the panel ---- */
.imp-h3 { font-size: 1.05rem; color: var(--color-primary); margin: 0 0 var(--space-xs); font-family: var(--font-display); }
.imp-sub { color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.6; margin: 0 0 var(--space-md); max-width: 720px; }
.imp-sub strong { color: var(--color-text); }

/* ---- safe-volume / speaker-protection note ---- */
.imp-safe {
  margin: 0 0 var(--space-md); padding: 8px 12px;
  border: 1px solid rgba(255, 180, 60, 0.4); border-left: 4px solid #ffb43c;
  border-radius: var(--radius-sm); background: rgba(255, 180, 60, 0.07);
  color: #ffd9a0; font-size: 0.84rem; line-height: 1.55;
}
.imp-safe strong { color: #ffe9c7; }

/* ---- shared field / input styling ---- */
.imp-controls { display: flex; flex-wrap: wrap; gap: var(--space-md); align-items: flex-end; }
.imp-field { flex: 1 1 150px; min-width: 130px; }
.imp-field--wide { flex: 1 1 220px; }
.imp-label { display: block; font-size: var(--fs-sm, 0.85rem); color: var(--color-text-muted); margin-bottom: 6px; font-family: var(--font-mono); }
.imp-num, .imp-select {
  width: 100%; padding: 10px 12px; background: var(--color-bg); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-family: var(--font-mono); font-size: 0.95rem; box-sizing: border-box;
}
.imp-num:focus, .imp-select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(0, 255, 65, 0.18); }
.imp-range { width: 100%; accent-color: var(--color-primary); cursor: pointer; }
.imp-range:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* ---- player bar ---- */
.imp-playbar { display: flex; flex-wrap: wrap; gap: var(--space-md); align-items: center; margin-top: var(--space-md); }
.imp-now { display: flex; flex-direction: column; gap: 2px; margin-left: auto; text-align: right; }
.imp-now__label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); }
.imp-now__val { font-family: var(--font-mono); font-size: 1.2rem; color: var(--color-secondary); }
.imp-status {
  margin-top: var(--space-md); padding: 8px 12px; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); background: rgba(0, 255, 65, 0.02);
  color: var(--color-text-muted); font-size: 0.85rem; line-height: 1.55; min-height: 1.5em;
}

/* ---- calculator layout ---- */
.imp-calc { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); align-items: start; }
@media (max-width: 760px) { .imp-calc { grid-template-columns: 1fr; } }

.imp-drivers { display: flex; flex-direction: column; gap: 8px; margin-top: var(--space-md); }
.imp-drv { display: grid; grid-template-columns: 1fr 110px 40px; gap: 8px; align-items: center; }
.imp-drv__label { font-size: 0.8rem; font-family: var(--font-mono); color: var(--color-text-muted); }
.imp-drv__input { width: 100%; }
.imp-drv__remove {
  width: 36px; height: 36px; border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-bg); color: var(--color-text-muted); font-size: 1.2rem; line-height: 1; cursor: pointer;
}
.imp-drv__remove:hover { border-color: var(--color-error); color: var(--color-error); }
.imp-addbtn { margin-top: var(--space-sm); }

/* ---- result + amp-match ---- */
.imp-result {
  padding: var(--space-md); border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: rgba(0, 255, 65, 0.03); text-align: center; margin-bottom: var(--space-md);
}
.imp-result__label { display: block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); }
.imp-result__val { display: block; margin-top: 4px; font-family: var(--font-display); font-size: 2.2rem; color: var(--color-primary); }

.imp-match { display: flex; flex-direction: column; gap: 6px; }
.imp-match__tag {
  align-self: flex-start; font-family: var(--font-mono); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.05em; padding: 4px 10px; border-radius: var(--radius-full);
  border: 1px solid var(--color-border); color: var(--color-text-muted);
}
.imp-match__tag--ok { color: var(--color-bg); background: var(--color-primary); border-color: var(--color-primary); }
.imp-match__tag--bad { color: #fff; background: var(--color-error); border-color: var(--color-error); }
.imp-match__detail { font-size: 0.85rem; line-height: 1.55; color: var(--color-text-muted); }

.imp-calcnotes { margin-top: var(--space-md); display: flex; flex-direction: column; gap: 6px; }
.imp-note {
  margin: 0; padding: 7px 11px; border-left: 3px solid var(--color-border);
  background: rgba(255, 255, 255, 0.02); border-radius: var(--radius-sm);
  font-size: 0.82rem; line-height: 1.55; color: var(--color-text-muted);
}

/* ---- content / FAQ / related (match the site's per-tool definitions) ---- */
.content-section { max-width: 800px; margin: 0 auto var(--space-lg); color: var(--color-text); line-height: 1.7; }
.content-section p { margin-bottom: var(--space-sm); }
.content-section strong { color: var(--color-text-bright); }

.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: var(--space-sm); overflow: hidden; }
.faq-question { padding: var(--space-md); cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; color: var(--color-text-bright); }
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after { content: '+'; color: var(--color-primary); font-size: 1.3em; font-weight: 700; }
details[open] .faq-question::after { content: '\2212'; }
.faq-answer { padding: 0 var(--space-md) var(--space-md); color: var(--color-text-muted); line-height: 1.75; border-top: 1px solid var(--color-border); padding-top: var(--space-sm); }

.related-tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); max-width: 800px; margin: 0 auto; }
.related-tool-card { display: block; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-md); text-decoration: none; transition: border-color 0.2s, transform 0.2s; text-align: left; }
.related-tool-card:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.related-tool-card__title { font-family: var(--font-display); font-size: var(--fs-sm, 0.9rem); color: var(--color-primary); margin-bottom: var(--space-xs); }
.related-tool-card__desc { font-size: var(--fs-xs, 0.8rem); color: var(--color-text-muted); line-height: 1.5; }

@media (max-width: 768px) {
  .related-tools-grid { grid-template-columns: 1fr; }
  .imp-now { margin-left: 0; text-align: left; }
}