/* Bloc explication (dans la sidebar) */
.calcul-explication {
    background: var(--color-secondary);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 1.1rem 1.2rem;
    margin: 0;                  /* pas de marge : gérée par sidebar-block gap */
}
.calcul-explication h2 { font-size: 1rem; margin-bottom: .45rem; }
.calcul-explication h3 { font-size: .9rem; margin: .75rem 0 .3rem; }
.calcul-explication p,
.calcul-explication li  { font-size: .85rem; line-height: 1.55; }
.calcul-explication ul  { padding-left: 1.2rem; margin: .35rem 0; }
.calcul-explication code,
.calcul-explication pre {
    font-family: var(--font-mono);
    font-size: .82rem;
    background: rgba(30,58,95,.08);
    padding: .15rem .4rem;
    border-radius: var(--radius-sm);
}
.calcul-explication pre {
    padding: .7rem .9rem;
    overflow-x: auto;
    display: block;
    margin: .6rem 0;
    line-height: 1.5;
    white-space: pre-wrap;      /* évite le débordement dans la sidebar */
    word-break: break-word;
}
.formule-ref {
    display: inline-block;
    margin-top: .75rem;
    padding: .25rem .6rem;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: .8rem;
    font-weight: 600;
}

/* Formulaire de calcul */
.calcul-form {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xs);
    padding: 0;
    box-shadow: var(--shadow-sm);
    margin-bottom: 2rem;
    overflow: hidden;
}
.calcul-form__title { margin-bottom: 1.25rem; font-size: 1.1rem; }

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}
@media (min-width: 600px) { .form-row { grid-template-columns: repeat(2, 1fr); } }

.form-label-unit {
    display: flex;
    align-items: baseline;
    gap: .4rem;
    margin-bottom: .4rem;
}
.form-unit {
    font-size: .78rem;
    color: var(--color-muted);
    font-weight: 400;
}

/* Groupes radio */
.radio-group { display: flex; flex-wrap: wrap; gap: .5rem; }
.radio-option {
    display: flex;
    align-items: center;
    gap: .35rem;
    padding: .45rem .9rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: .9rem;
    transition: border-color var(--transition), background var(--transition);
}
.radio-option:has(input:checked) {
    border-color: var(--color-primary);
    background: rgba(30,58,95,.06);
    font-weight: 600;
}
.radio-option input { accent-color: var(--color-primary); }

/* Bouton calculer */
.btn-calculer {
    background: var(--color-primary);
    color: #fff;
    padding: .85rem;
    font-size: .72rem;
    font-weight: 800;
    border-radius: var(--radius-xs);
    border: none;
    cursor: pointer;
    width: 100%;
    margin-top: 1.25rem;
    text-transform: uppercase;
    letter-spacing: .12em;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .6rem;
}
.btn-calculer:hover { background: #0e1e30; }

/* Zone résultat */
#result-calcul { display: none; margin-bottom: 2rem; animation: fadeSlide .2s ease-out; }
#result-calcul.show { display: block; }

@keyframes fadeSlide {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.result-box {
    background: var(--color-surface-dark);
    border: 1px solid #334155;
    border-radius: var(--radius-xs);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}
/* La couleur de bordure latérale reste un indicateur de statut */
.result-box.result--ok      { border-top: 3px solid var(--color-success); }
.result-box.result--warning { border-top: 3px solid var(--color-warning); }
.result-box.result--error   { border-top: 3px solid var(--color-error); }

.result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}
@media (min-width: 600px) { .result-grid { grid-template-columns: repeat(3, 1fr); } }

.result-item {
    background: rgba(255,255,255,.04);
    border: 1px solid #334155;
    border-radius: var(--radius-xs);
    padding: .85rem 1rem;
}
.result-item__label {
    font-size: .55rem;
    color: #94A3B8;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: .35rem;
    display: block;
}
.result-item__value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-result-val);
    font-family: var(--font-mono);
    line-height: 1;
    display: block;
}
.result-item__unit { font-size: .7rem; color: #64748B; }

/* Badge conformité — style "terminal" sur fond sombre */
.badge-conformite {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .35rem .8rem;
    border-radius: var(--radius-xs);
    font-weight: 800;
    font-size: .65rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    font-family: var(--font-mono);
}
.badge-conformite--ok      { background: rgba(5,150,105,.15); color: #34D399; border: 1px solid rgba(5,150,105,.3); }
.badge-conformite--warning { background: rgba(217,119,6,.15);  color: #FBBF24; border: 1px solid rgba(217,119,6,.3); }
.badge-conformite--error   { background: rgba(220,38,38,.15);  color: #F87171; border: 1px solid rgba(220,38,38,.3); }

/* Bouton sauvegarder */
.btn-sauvegarder {
    display: flex;
    align-items: center;
    gap: .5rem;
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    padding: .5rem 1.1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    font-size: .9rem;
    transition: background var(--transition), color var(--transition);
    margin-top: 1rem;
}
.btn-sauvegarder:hover { background: var(--color-primary); color: #fff; }
.btn-sauvegarder:disabled { opacity: .6; cursor: not-allowed; }

/* Section optionnelle dépliable (<details>) */
.form-details {
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: .75rem 1.1rem;
    margin-top: .5rem;
    background: var(--color-secondary);
}
.form-details summary {
    cursor: pointer;
    font-weight: 600;
    font-size: .9rem;
    color: var(--color-primary);
    list-style: none;
    display: flex;
    align-items: center;
    gap: .5rem;
}
.form-details summary::before { content: '▶'; font-size: .7rem; transition: transform var(--transition); }
.form-details[open] summary::before { transform: rotate(90deg); }

/* Liste de justifications (protection différentielle) */
.result-justifications {
    list-style: none;
    padding: 0;
    margin: .5rem 0 0;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}
.result-justifications li {
    font-size: .85rem;
    line-height: 1.5;
    padding: .55rem .8rem;
    background: var(--color-secondary);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Erreur formulaire */
.calcul-form-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 3px solid var(--color-error);
    border-radius: var(--radius-md);
    padding: .75rem 1rem;
    font-size: .9rem;
    margin-top: 1rem;
    display: none;
}
.calcul-form-error.show { display: block; }

/* Radios en liste verticale (modes de pose) */
.radio-group--vertical { flex-direction: column; gap: .35rem; }
.radio-group--vertical .radio-option { border: none; padding: .25rem .1rem; font-size: .88rem; }
.radio-group--vertical .radio-option:has(input:checked) { background: none; font-weight: 700; }

/* Tableau de charges (équilibrage des phases) */
.phase-table-wrapper { overflow-x: auto; margin-top: .5rem; }
.phase-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.phase-table th { background: var(--color-secondary); font-weight: 600; text-align: left;
    padding: .5rem .75rem; border-bottom: 2px solid var(--color-border); white-space: nowrap; }
.phase-table td { padding: .4rem .5rem; border-bottom: 1px solid var(--color-border); vertical-align: middle; }
.phase-table .form-control { padding: .4rem .6rem; font-size: .88rem; }
.btn-remove-row { background: none; border: 1.5px solid var(--color-border); color: var(--color-muted);
    padding: .25rem .55rem; border-radius: var(--radius-sm); cursor: pointer; font-size: .8rem;
    transition: background var(--transition), color var(--transition); }
.btn-remove-row:hover { background: #fee2e2; border-color: var(--color-error); color: var(--color-error); }

/* Bloc suggestion (équilibrage) */
.result-suggestion {
    margin-top: 1.25rem;
    padding: 1rem 1.2rem;
    background: #fffbeb;
    border: 1.5px solid #fde68a;
    border-radius: var(--radius-md);
}
.result-suggestion__title { font-size: .92rem; font-weight: 700; color: #92400e; margin: 0 0 .6rem; }

/* ═══════════════════════════════════════════════
   Layout deux colonnes : outil | sidebar
   ═══════════════════════════════════════════════ */
.calcul-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: start;
}
@media (min-width: 960px) {
    .calcul-layout { grid-template-columns: 1fr 300px; }

    /* Sidebar sticky : reste visible pendant l'interaction avec le formulaire */
    .calcul-layout__sidebar {
        position: sticky;
        top: 5rem;              /* hauteur nav + petit écart */
        /* Pas de max-height / overflow : la sidebar prend toute la hauteur
           de son contenu et c'est le scroll de page normal qui s'applique */
    }
}

/* En-tête du formulaire style card-header */
.calcul-form__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    padding: .85rem 1.5rem;
    background: #F8FAFC;
    border-bottom: 1px solid var(--color-border);
}
.calcul-form__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    flex-shrink: 0;
}
.calcul-form__title {
    margin: 0;
    font-size: .72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--color-primary);
}
.calcul-form__ref {
    font-size: .6rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--color-muted);
    white-space: nowrap;
}

/* Note et hint sous le formulaire */
.result-note {
    font-size: .75rem;
    color: #94A3B8;
    margin-top: .75rem;
}
.form-hint {
    font-size: .78rem;
    color: var(--color-muted);
    margin-bottom: 1rem;
}

/* Champs dans le formulaire calcul — padding interne
   (form-row = anciens calculateurs, form-fields = nouveaux) */
.form-fields,
.calcul-form .form-row {
    padding: 1.5rem 1.5rem 0;
}
.calcul-form .calcul-form-error { margin: 1rem 1.5rem 0; }
.calcul-form .btn-calculer {
    margin: 1.25rem 1.5rem 1.5rem;
    width: calc(100% - 3rem);
}

/* Résultat mis en avant */
.result-item--highlight {
    grid-column: 1 / -1;
    background: rgba(56,189,248,.08);
    border-color: rgba(56,189,248,.25);
}
.result-item--highlight .result-item__label { color: #7DD3FC; }
.result-item--highlight .result-item__value { color: #fff; font-size: 1.6rem; }
.result-item--highlight .result-item__unit  { color: #94A3B8; }

/* ═══════════════════════════════════════════════
   Sidebar
   ═══════════════════════════════════════════════ */
.calcul-layout__sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* Bloc générique sidebar */
.sidebar-block { display: flex; flex-direction: column; gap: .75rem; }
.sidebar-block__title {
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--color-muted);
    margin: 0;
}

/* Card article associé */
.sidebar-article-card {
    display: flex;
    gap: .9rem;
    align-items: flex-start;
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.1rem;
    text-decoration: none;
    color: inherit;
    transition: border-color var(--transition), transform var(--transition);
}
.sidebar-article-card:hover {
    border-color: var(--color-accent);
    transform: translateX(3px);
}
.sidebar-article-card__icon { font-size: 1.5rem; flex-shrink: 0; line-height: 1; }
.sidebar-article-card strong { display: block; font-size: .95rem; color: var(--color-primary); margin-bottom: .25rem; }
.sidebar-article-card p { margin: 0; font-size: .82rem; color: var(--color-muted); line-height: 1.4; }

/* Cards calculateurs similaires */
.sidebar-calc-card {
    display: block;
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: .9rem 1.1rem;
    text-decoration: none;
    color: inherit;
    transition: border-color var(--transition), transform var(--transition);
}
.sidebar-calc-card:hover {
    border-color: var(--color-accent);
    transform: translateX(3px);
}
.sidebar-calc-card strong { display: block; font-size: .9rem; color: var(--color-primary); margin-bottom: .2rem; }
.sidebar-calc-card p { margin: 0; font-size: .8rem; color: var(--color-muted); line-height: 1.35; }

/* CTA inscription */
.sidebar-cta {
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-md);
}
.sidebar-cta__icon { font-size: 1.8rem; margin-bottom: .5rem; }
.sidebar-cta h3 { font-size: 1rem; color: #fff; margin: 0 0 .5rem; }
.sidebar-cta p { font-size: .83rem; color: rgba(255,255,255,.75); margin-bottom: 1.1rem; line-height: 1.45; }
.sidebar-cta__btn {
    display: block;
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
    text-align: center;
    padding: .7rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: .9rem;
    transition: background var(--transition);
    width: 100%;
    box-sizing: border-box;
}
.sidebar-cta__btn:hover { background: #d97706; }
.sidebar-cta__login {
    display: block;
    margin-top: .75rem;
    font-size: .8rem;
    color: rgba(255,255,255,.6);
    text-decoration: none;
    transition: color var(--transition);
}
.sidebar-cta__login:hover { color: #fff; }

/* Tableau comparatif LED vs existant */
.comparatif-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.comparatif-table th {
    background: var(--color-secondary);
    font-weight: 600;
    padding: .55rem .75rem;
    text-align: left;
    border-bottom: 2px solid var(--color-border);
}
.comparatif-table td { padding: .45rem .75rem; border-bottom: 1px solid var(--color-border); vertical-align: middle; }
.comparatif-table .col-led { color: var(--color-success); font-weight: 700; }

/* ── Overrides form dans le contexte calculateur ─────────── */
.calcul-form .form-label {
    font-size: .62rem;
    font-weight: 800;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: .08em;
}
.calcul-form .form-control {
    font-family: var(--font-mono);
    font-size: .88rem;
    font-weight: 600;
    border-radius: var(--radius-xs);
    border-width: 1px;
    color: var(--color-primary);
}
.calcul-form .form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(18,38,63,.1);
    background: #F8FAFC;
}

/* Bouton sauvegarder sur fond sombre */
.btn-sauvegarder {
    border-radius: var(--radius-xs);
    border-width: 1px;
    font-size: .65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .08em;
    background: transparent;
    border-color: #475569;
    color: #94A3B8;
}
.btn-sauvegarder:hover { background: #475569; color: #fff; border-color: #475569; }

/* Triangle des puissances P/Q/S */
.triangle-pqs-wrap {
    margin-top: 1.25rem;
    padding: 1rem 1rem .75rem;
    background: rgba(255,255,255,.02);
    border: 1px solid #334155;
    border-radius: var(--radius-xs);
}
.triangle-pqs-wrap .result-note {
    margin: 0 0 .6rem;
    font-size: .58rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .1em;
}
#triangle-pqs {
    width: 100%;
    max-width: 400px;
    display: block;
    margin: 0 auto;
}

/* Comparatif tarifaire (cout-consommation) */
.tarif-comp-toggle {
    display: flex;
    align-items: center;
    gap: .55rem;
    cursor: pointer;
    font-size: .62rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--color-muted);
    user-select: none;
}
.tarif-comp-toggle input[type="checkbox"] {
    width: 14px; height: 14px; margin: 0;
    accent-color: var(--color-primary);
    cursor: pointer;
}
.bloc-tarif-comp { padding-top: .75rem; border-top: 1px dashed var(--color-border); margin-top: .75rem; }
.comparatif-table .eco--gain { color: #34D399; font-weight: 700; }
.comparatif-table .eco--loss { color: #F87171; font-weight: 700; }
.comparatif-table .eco--ref  { color: var(--color-muted); font-style: italic; }
.res-tarif-comp { margin-top: 1.5rem; }
.res-tarif-comp .result-note { margin-bottom: .6rem; font-size: .58rem; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; }

/* Filtres catégorie */
.filtres-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-bottom: 1.5rem;
}
.filtre-tab {
    padding: .4rem .9rem;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--color-border);
    font-size: .88rem;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
    background: none;
    color: var(--color-text);
}
.filtre-tab:hover, .filtre-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}