/* ==========================================================================
   Réducteur de gu — page /reducteur (produit standard + configurateur sur mesure)
   Aligné sur la charte Mistral Pans (css/style.css : teal/cream, Fraunces/Inter).
   Toutes les classes sont préfixées `gu-` pour éviter toute collision globale.
   ========================================================================== */

.gu-page { background: var(--color-bg); padding: var(--space-xl, 2rem) 0 var(--space-2xl, 4rem); }
.gu-wrap { max-width: 1180px; margin: 0 auto; padding: 0 var(--space-lg, 1.5rem); }

/* --- En-tête --- */
.gu-top {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  border-bottom: 1px solid var(--color-border); padding-bottom: 0.75rem; margin-bottom: 1.25rem;
}
.gu-brandmark {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--color-accent);
}
.gu-langbtn {
  margin-left: auto; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em;
  padding: 0.35rem 0.7rem; border: 1px solid var(--color-border-dark); background: transparent;
  color: var(--color-text); border-radius: var(--radius-sm, 4px); cursor: pointer; transition: all .2s;
}
.gu-langbtn:hover { background: var(--color-text); color: var(--color-bg); border-color: var(--color-text); }

.gu-h1 { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3.25rem); line-height: 1; margin: 0.4rem 0 0.2rem; }
.gu-lede { max-width: 64ch; color: var(--color-text-muted); font-size: 1.05rem; line-height: 1.6; margin: 0.5rem 0 1.75rem; }
.gu-lede em { font-style: normal; color: var(--color-accent); font-weight: 600; }

/* --- Produit standard --- */
.gu-standard {
  display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 1.75rem; align-items: stretch;
  background: var(--color-bg-warm); border: 1px solid var(--color-border); border-radius: var(--radius-lg, 12px);
  padding: 1.5rem; margin-bottom: 2rem;
}
.gu-standard__media {
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(120% 120% at 50% 0%, #ffffff 0%, var(--color-bg) 80%);
  border: 1px solid var(--color-border); border-radius: var(--radius-md); min-height: 220px; overflow: hidden;
}
.gu-standard__media svg { width: 70%; height: auto; opacity: 0.92; }
.gu-eyebrow { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-accent); }
.gu-standard__title { font-family: var(--font-display); font-size: 1.6rem; margin: 0.3rem 0 0.5rem; }
.gu-standard__desc { color: var(--color-text-muted); line-height: 1.6; margin: 0 0 0.85rem; }
.gu-points { list-style: none; padding: 0; margin: 0 0 1.1rem; display: grid; gap: 0.35rem; }
.gu-points li { position: relative; padding-left: 1.4rem; color: var(--color-text); font-size: 0.95rem; }
.gu-points li::before { content: '✓'; position: absolute; left: 0; color: var(--color-success); font-weight: 700; }

/* --- Barre d'achat (standard + configurateur) --- */
.gu-buy {
  display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
  border-top: 1px solid var(--color-border); padding-top: 1rem; margin-top: 0.5rem;
}
.gu-price { display: flex; flex-direction: column; margin-right: auto; }
.gu-price__k { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-text-muted); }
.gu-price__v { font-family: var(--font-display); font-size: 1.7rem; font-weight: 600; line-height: 1; }

.gu-qty { display: inline-flex; align-items: center; border: 1px solid var(--color-border-dark); border-radius: var(--radius-md); overflow: hidden; }
.gu-qty button {
  width: 38px; height: 40px; border: 0; background: transparent; cursor: pointer; font-size: 1.2rem;
  color: var(--color-text); display: grid; place-items: center;
}
.gu-qty button:hover { background: var(--color-bg-warm); }
.gu-qty input {
  width: 44px; height: 40px; text-align: center; border: 0; border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border); font-family: var(--font-mono); font-size: 0.95rem;
  background: var(--color-bg); color: var(--color-text); -moz-appearance: textfield;
}
.gu-qty input::-webkit-outer-spin-button, .gu-qty input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.gu-btn {
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600; padding: 0.7rem 1.25rem;
  border-radius: var(--radius-md); cursor: pointer; border: 1px solid transparent; transition: all .2s;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
}
.gu-btn--primary { background: var(--color-text); color: var(--color-bg); }
.gu-btn--primary:hover { background: #000; }
.gu-btn--accent { background: var(--color-accent); color: #fff; }
.gu-btn--accent:hover { background: var(--color-accent-dark, #0a5c5f); }
.gu-btn--ghost { background: transparent; color: var(--color-accent); border-color: var(--color-border-dark); }
.gu-btn--ghost:hover { background: var(--color-bg-warm); border-color: var(--color-accent); }
.gu-btn--ok { background: var(--color-success) !important; color: #fff !important; }
.gu-btn:focus-visible { outline: var(--focus-ring, 2px solid var(--color-accent)); outline-offset: 2px; }

.gu-surmesure { margin-top: 1rem; font-family: var(--font-mono); letter-spacing: 0.04em; }

/* --- Configurateur --- */
.gu-config { margin-top: 0.5rem; scroll-margin-top: 90px; }
.gu-config[hidden] { display: none; }
.gu-config-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.gu-config-head h2 { font-family: var(--font-display); font-size: 1.6rem; margin: 0; }
.gu-config-head p { color: var(--color-text-muted); margin: 0; font-size: 0.95rem; }

.gu-grid { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 1.6rem; align-items: start; }
@media (max-width: 900px) { .gu-grid { grid-template-columns: 1fr; } }

/* Scène (2D / 3D) */
.gu-stage {
  position: relative; background: radial-gradient(120% 120% at 50% 0%, #ffffff 0%, var(--color-bg-warm) 80%);
  border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden;
}
.gu-stage canvas { width: 100%; height: 440px; display: block; }
#gu-three { cursor: grab; touch-action: none; }
#gu-three:active { cursor: grabbing; }
.gu-stage-tabs { position: absolute; top: 0.6rem; left: 0.6rem; display: flex; border: 1px solid var(--color-border-dark); border-radius: var(--radius-sm, 4px); overflow: hidden; background: var(--color-bg); z-index: 1; }
.gu-stage-tabs button {
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.45rem 0.7rem; background: transparent; border: 0; border-right: 1px solid var(--color-border-dark);
  cursor: pointer; color: var(--color-text);
}
.gu-stage-tabs button:last-child { border-right: 0; }
.gu-stage-tabs button[aria-selected="true"] { background: var(--color-accent); color: #fff; }
.gu-hint { position: absolute; bottom: 0.5rem; right: 0.75rem; font-family: var(--font-mono); font-size: 0.68rem; color: var(--color-text-muted); }

/* Lecture acoustique */
.gu-readout {
  margin-top: 0.9rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden;
  background: var(--color-bg-warm); display: grid; grid-template-columns: 1fr 1.2fr 1fr;
}
.gu-readout > div { padding: 0.85rem 1rem; border-right: 1px solid var(--color-border); }
.gu-readout > div:last-child { border-right: 0; }
.gu-readout .gu-k { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.13em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 0.35rem; }
.gu-freqbig { font-family: var(--font-display); font-size: 2.1rem; line-height: 1; font-weight: 600; }
.gu-freqbig small { font-size: 0.9rem; color: var(--color-text-muted); font-weight: 400; margin-left: 0.25rem; }
.gu-freqbig--muted { font-size: 1.5rem; color: var(--color-text-muted); }
.gu-note-target { font-family: var(--font-display); font-size: 1.7rem; font-weight: 600; }
.gu-cents { font-family: var(--font-mono); font-size: 0.8rem; margin-top: 0.25rem; }
.gu-cents.flat { color: var(--color-accent); }
.gu-cents.sharp { color: var(--color-warning); }
.gu-cents.ok { color: var(--color-success); }
.gu-arrowdrop { font-family: var(--font-mono); font-size: 0.72rem; color: var(--color-accent); margin-top: 0.3rem; }

.gu-specline { font-family: var(--font-mono); font-size: 0.7rem; color: var(--color-text-muted); margin-top: 0.9rem; line-height: 1.8; }
.gu-specline b { color: var(--color-text); }

/* Panneaux de réglage */
.gu-panel { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: 1.1rem; overflow: hidden; }
.gu-panel h3 {
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase;
  margin: 0; padding: 0.75rem 1rem; border-bottom: 1px solid var(--color-border); color: var(--color-accent);
  display: flex; justify-content: space-between; align-items: center;
}
.gu-panel h3 .gu-tag { color: var(--color-text-muted); font-size: 0.62rem; letter-spacing: 0.1em; }
.gu-pad { padding: 0.9rem 1rem; }
.gu-field { margin-bottom: 1rem; }
.gu-field:last-child { margin-bottom: 0.15rem; }
.gu-field label { display: flex; justify-content: space-between; align-items: baseline; font-size: 0.9rem; margin-bottom: 0.4rem; color: var(--color-text); }
.gu-field label .gu-val { font-family: var(--font-mono); font-size: 0.8rem; background: var(--color-text); color: var(--color-bg); padding: 0.05rem 0.5rem; border-radius: var(--radius-sm, 4px); }
.gu-field label.gu-derived { color: var(--color-text-muted); }
.gu-field label.gu-derived .gu-val { background: var(--color-text-muted); }

.gu-field input[type=range] { width: 100%; -webkit-appearance: none; appearance: none; height: 3px; background: var(--color-border-dark); outline: none; margin: 0.5rem 0 0.15rem; border-radius: 3px; }
.gu-field input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 17px; height: 17px; border-radius: 50%; background: var(--color-accent); border: 2px solid var(--color-bg); box-shadow: 0 0 0 1px var(--color-accent); cursor: pointer; }
.gu-field input[type=range]::-moz-range-thumb { width: 17px; height: 17px; border-radius: 50%; background: var(--color-accent); border: 2px solid var(--color-bg); cursor: pointer; }
.gu-field input[type=range]:disabled { opacity: 0.4; }

.gu-note { font-size: 0.8rem; color: var(--color-text-muted); line-height: 1.5; margin: 0.5rem 0 0; }
.gu-note.gu-warn { color: var(--color-warning); }
.gu-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; }
.gu-select { width: 100%; font-family: var(--font-mono); font-size: 0.85rem; padding: 0.5rem; border: 1px solid var(--color-border-dark); background: var(--color-bg); border-radius: var(--radius-sm, 4px); color: var(--color-text); }

.gu-toggle { display: flex; border: 1px solid var(--color-border-dark); border-radius: var(--radius-sm, 4px); overflow: hidden; margin-bottom: 0.9rem; }
.gu-toggle button { flex: 1; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.05em; text-transform: uppercase; padding: 0.55rem; background: transparent; border: 0; border-right: 1px solid var(--color-border-dark); cursor: pointer; color: var(--color-text); }
.gu-toggle button:last-child { border-right: 0; }
.gu-toggle button[aria-selected="true"] { background: var(--color-accent); color: #fff; }
.gu-chainlink { text-align: center; margin: -0.4rem 0 0.4rem; color: var(--color-accent); font-family: var(--font-mono); font-size: 0.75rem; }

.gu-foot { margin-top: 2rem; border-top: 1px solid var(--color-border); padding-top: 0.9rem; font-family: var(--font-mono); font-size: 0.72rem; color: var(--color-text-muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.6rem; }

/* Back-door admin */
.gu-admin-stl { margin-top: 0.6rem; }
.gu-admin-stl[hidden] { display: none; }

@media (max-width: 720px) {
  .gu-standard { grid-template-columns: 1fr; }
  .gu-readout { grid-template-columns: 1fr; }
  .gu-readout > div { border-right: 0; border-bottom: 1px solid var(--color-border); }
  .gu-readout > div:last-child { border-bottom: 0; }
}