/* ============================================================
   article.css : styles des pages article du blog
   Partagé par :
     - article.php            (production, URL /article/{slug})
     - article-template.html  (prévisualisation locale, sans PHP)
   Chargé après style/reset.css et style/index-home.css.
   ============================================================ */

/* ─── Variables ─── */
:root {
  --c-primary: #003051;
  --c-accent: #FDB704;
  --c-text: #1a2e40;
  --c-muted: #5a6a7a;
  --c-bg: #f7f9fb;
  --c-white: #fff;
  --c-border: #e2e8ef;
  --radius: 8px;
}

/* ─── Barre de lecture ─── */
.art1-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--c-accent);
  z-index: 10000; /* au-dessus de l'en-tête fixe (.rt-header-wrap, z-index 9999) */
  transition: width 0.1s linear;
}

/* ─── Hero split ─── */
.arth-hero {
  display: grid;
  grid-template-columns: 45% 55%;
  min-height: 500px;
  margin-top: 68px; /* hauteur de l'en-tête fixe (.rt-header-main), comme .gl-hero de projets.html */
}
.arth-hero-left {
  background: var(--c-primary);
  padding: 48px 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
}
.arth-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  flex-wrap: wrap;
}
.arth-breadcrumb a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color 0.2s;
}
.arth-breadcrumb a:hover { color: rgba(255,255,255,0.85); }
.arth-breadcrumb-sep { font-size: 10px; }
.arth-hero-badge {
  display: inline-block;
  background: var(--c-accent);
  color: var(--c-primary);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 5px 14px;
  border-radius: 100px;
  align-self: flex-start;
}
.arth-hero h1 {
  font-family: 'Lato', sans-serif;
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 900;
  color: var(--c-white);
  line-height: 1.2;
  margin: 0;
}
.arth-hero-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.arth-hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}
.arth-hero-meta-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.6;
}
.arth-hero-cta {
  display: inline-block;
  background: var(--c-accent);
  color: var(--c-primary);
  font-family: 'Lato', sans-serif;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  align-self: flex-start;
  transition: opacity 0.2s, transform 0.15s;
  margin-top: 8px;
}
.arth-hero-cta:hover { opacity: 0.9; transform: translateY(-2px); }
.arth-hero-right {
  position: relative;
  overflow: hidden;
}
.arth-hero-right img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  clip-path: polygon(5% 0, 100% 0, 100% 100%, 0 100%);
}

/* ─── Loading state ─── */
.arth-loading {
  text-align: center;
  padding: 80px 24px;
  color: var(--c-muted);
  font-size: 16px;
}
.arth-loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Layout principal ─── */
.art1-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: start;
}

/* ─── Contenu ─── */
.art1-content {
  font-family: 'Lato', sans-serif;
  font-size: 17px;
  line-height: 1.8;
  color: var(--c-text);
}
.art1-content p { margin-bottom: 20px; }
.art1-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-primary);
  border-bottom: 2px solid var(--c-accent);
  padding-bottom: 8px;
  margin: 40px 0 20px;
  scroll-margin-top: 100px;
}
.art1-content ul, .art1-content ol {
  list-style: disc;
  padding-left: 24px;
  margin: 16px 0 20px;
}
.art1-content li { margin-bottom: 8px; }

/* Tableau */
.art1-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}
.art1-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.art1-table thead tr {
  background: var(--c-primary);
  color: var(--c-white);
}
.art1-table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
  white-space: nowrap;
}
.art1-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--c-border);
}
.art1-table tbody tr:nth-child(even) { background: #f0f4f8; }
.art1-table tbody tr:last-child td { border-bottom: none; }
.art1-table td:first-child { font-weight: 600; color: var(--c-primary); }

/* ─── Widget calculateur d'isolant ─── */
.art1-calc {
  margin: 36px 0;
  background: linear-gradient(135deg, #EEF3F7 0%, #F8FAFC 100%);
  border: 1px solid #CBD5E1;
  border-radius: 12px;
  padding: 28px;
}
.art1-calc-header h3 {
  font-family: 'Lato', sans-serif;
  font-size: 19px;
  font-weight: 800;
  color: var(--c-primary);
  margin: 0 0 8px;
  line-height: 1.3;
}
.art1-calc-help { font-size: 14px; color: #475569; margin: 0 0 20px; line-height: 1.5; }
.art1-calc-control { margin-bottom: 22px; }
.art1-calc-control label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.art1-calc-input-row { display: flex; align-items: center; gap: 18px; }
.art1-calc-input-row input[type="range"] {
  flex: 1;
  height: 8px;
  accent-color: var(--c-accent);
  cursor: pointer;
}
.art1-calc-output {
  display: inline-block;
  min-width: 76px;
  padding: 8px 14px;
  background: var(--c-primary);
  color: var(--c-accent);
  border-radius: 6px;
  font-size: 22px;
  font-weight: 900;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.art1-calc-hints {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 16px;
}
.art1-calc-preset {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 6px;
  padding: 8px 6px;
  font-family: 'Lato', sans-serif;
  font-size: 15px;
  font-weight: 800;
  color: var(--c-primary);
  cursor: pointer;
  transition: all 0.15s;
  line-height: 1.2;
}
.art1-calc-preset small {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: #64748B;
  margin-top: 4px;
  text-transform: none;
  letter-spacing: 0;
}
.art1-calc-preset:hover { background: #FEF3C7; border-color: var(--c-accent); }
.art1-calc-preset.is-active { background: var(--c-accent); border-color: var(--c-accent); color: var(--c-primary); }
.art1-calc-table {
  width: 100%;
  border-collapse: collapse;
  background: #FFFFFF;
  border-radius: 8px;
  overflow: hidden;
  font-size: 15px;
}
.art1-calc-table th, .art1-calc-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid #E2E8F0;
}
.art1-calc-table th {
  background: var(--c-primary);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.art1-calc-table th small { font-weight: 500; opacity: 0.7; }
.art1-calc-table td.art1-calc-thickness {
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--c-primary);
}
.art1-calc-table tr.is-highlight { background: #FEF9E7; }
.art1-calc-table tr.is-highlight td { font-weight: 800; }
.art1-calc-table tr.is-highlight td:first-child::after {
  content: ' ★ Article';
  font-size: 11px;
  color: var(--c-accent);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-left: 6px;
  vertical-align: middle;
}
.art1-calc-note {
  font-size: 12px;
  color: #64748B;
  margin: 14px 0 0;
  font-style: italic;
  line-height: 1.5;
}
@media (max-width: 600px) {
  .art1-calc { padding: 20px; }
  .art1-calc-hints { grid-template-columns: repeat(2, 1fr); }
  .art1-calc-table th, .art1-calc-table td { padding: 10px 8px; font-size: 13px; }
}

/* Simulateur solaire (article Orientation Sud) */
.sun-sim-body {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: 24px;
  align-items: center;
  margin-bottom: 22px;
}
.sun-sim-scene { background: #fff; border-radius: 8px; padding: 8px; border: 1px solid #E2E8F0; }
.sun-sim-scene svg { width: 100%; height: auto; display: block; }
.sun-sim-facades { display: grid; grid-template-columns: 1fr; gap: 8px; }
.sun-sim-facade {
  background: #fff;
  border: 1px solid #CBD5E1;
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sun-sim-facade .lbl {
  font-weight: 800;
  color: var(--c-primary);
  font-size: 14px;
  min-width: 48px;
}
.sun-sim-facade .bar {
  flex: 1;
  height: 8px;
  background: #E2E8F0;
  border-radius: 4px;
  overflow: hidden;
}
.sun-sim-facade .bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #FEF3C7 0%, #FDB704 40%, #EA580C 75%, #B91C1C 100%);
  transition: width 0.15s;
  width: 0%;
}
.sun-sim-facade .val {
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--c-primary);
  font-size: 14px;
  min-width: 78px;
  text-align: right;
}
.sun-sim-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  padding-top: 18px;
  border-top: 1px dashed #CBD5E1;
}
.sun-sim-ctrl label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.sun-sim-ctrl-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.sun-sim-ctrl-row input[type="range"] {
  flex: 1;
  accent-color: var(--c-accent);
  cursor: pointer;
}
.sun-sim-ctrl-row output {
  min-width: 96px;
  padding: 5px 10px;
  background: var(--c-primary);
  color: var(--c-accent);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 800;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.sun-sim-presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 10px;
}
.sun-sim-presets button {
  background: #fff;
  border: 1px solid #CBD5E1;
  border-radius: 5px;
  padding: 6px 4px;
  font-family: 'Lato', sans-serif;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-primary);
  cursor: pointer;
  transition: all 0.15s;
}
.sun-sim-presets button:hover { background: #FEF3C7; border-color: var(--c-accent); }
.sun-sim-presets button.is-active { background: var(--c-accent); border-color: var(--c-accent); }
.sun-sim-hint {
  font-size: 11px;
  color: #64748B;
  margin: 8px 0 0;
  font-style: italic;
  line-height: 1.4;
}
.sun-sim-daily {
  margin-top: 18px;
  padding: 12px 14px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid #CBD5E1;
  display: grid;
  grid-template-columns: auto repeat(4, 1fr);
  gap: 8px 14px;
  font-size: 13px;
  align-items: center;
}
.sun-sim-daily strong {
  color: var(--c-primary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.sun-sim-daily span {
  font-weight: 700;
  color: var(--c-primary);
  font-variant-numeric: tabular-nums;
}
@media (max-width: 780px) {
  .sun-sim-body { grid-template-columns: 1fr; }
  .sun-sim-scene { max-width: 340px; margin: 0 auto; }
  .sun-sim-controls { grid-template-columns: 1fr; gap: 18px; }
  .sun-sim-daily { grid-template-columns: 1fr 1fr; gap: 6px 12px; }
  .sun-sim-daily strong { grid-column: 1 / -1; }
}

/* Calculateur d'inertie thermique (masse thermique) */
.icmt-row2 { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: start; }
.icmt-panel { background: #F8FAFC; border: 1px solid #E2E8F0; border-radius: 8px; padding: 14px 16px; }
.icmt-plabel { font-size: 11px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: #94A3B8; margin-bottom: 10px; }
.icmt-select { width: 100%; margin-bottom: 12px; padding: 7px 10px; border: 1px solid #CBD5E1; border-radius: 6px; font-size: 13px; background: #fff; }
.icmt-slider { width: 100%; }
.icmt-thick-row { display: flex; align-items: center; gap: 8px; margin: 4px 0 2px; }
.icmt-thick-val { font-size: 22px; font-weight: 700; color: #17293C; min-width: 48px; text-align: right; }
.icmt-thick-unit { font-size: 13px; color: #94A3B8; }
.icmt-result-val { font-size: 22px; font-weight: 700; color: #0063A0; }
.icmt-mid { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; padding-top: 40px; }
.icmt-eq-badge { background: #DCFCE7; color: #15803D; border-radius: 6px; padding: 5px 10px; font-size: 11px; font-weight: 700; text-align: center; line-height: 1.5; }
.icmt-swap { background: none; border: 1px solid #CBD5E1; border-radius: 6px; padding: 6px 10px; cursor: pointer; font-size: 12px; color: #64748B; }
.icmt-swap:hover { background: #F1F5F9; }
.icmt-hero { margin: 16px 0; background: #EFF6FF; border: 1px solid #BFDBFE; border-radius: 8px; padding: 14px 18px; }
.icmt-hero-label { font-size: 12px; color: #1D4ED8; margin-bottom: 2px; }
.icmt-hero-val { font-size: 26px; font-weight: 700; color: #1D4ED8; }
.icmt-hero-unit { font-size: 12px; color: #1D4ED8; opacity: .7; }
.icmt-hero-sub { font-size: 11px; color: #1D4ED8; opacity: .65; margin-top: 2px; }
.icmt-cmp { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.icmt-cmp-head { font-size: 11px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: #94A3B8; margin-bottom: 8px; }
.icmt-stat { display: flex; justify-content: space-between; align-items: baseline; padding: 5px 0; border-bottom: 1px solid #F1F5F9; font-size: 13px; }
.icmt-stat:last-child { border-bottom: none; }
.icmt-sk { color: #64748B; }
.icmt-sv { font-weight: 600; color: #17293C; }
.icmt-sv-accent { font-weight: 600; color: #0063A0; }
.icmt-warn { display: none; font-size: 12px; background: #FFFBEB; border: 1px solid #FDE68A; color: #92400E; border-radius: 6px; padding: 8px 12px; margin-top: 10px; }
@media (max-width: 600px) {
  .icmt-row2 { grid-template-columns: 1fr; }
  .icmt-mid { flex-direction: row; padding-top: 0; padding-bottom: 4px; }
}

/* Simulateur VMC (article VMC double flux vs étanchéité) */
.vmc-sim-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 22px;
}
.vmc-sim-ctrl label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.vmc-sim-ctrl select {
  width: 100%;
  padding: 12px 14px;
  background: #fff;
  border: 1px solid #CBD5E1;
  border-radius: 6px;
  font-family: 'Lato', sans-serif;
  font-size: 14px;
  color: var(--c-primary);
  cursor: pointer;
}
.vmc-sim-ctrl select:focus {
  outline: 2px solid var(--c-accent);
  outline-offset: 1px;
  border-color: var(--c-accent);
}
.vmc-sim-gauge {
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 16px;
}
.vmc-sim-gauge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: #64748B;
  font-weight: 600;
}
.vmc-sim-gauge-row strong {
  color: var(--c-primary);
  font-size: 20px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}
.vmc-sim-bar-container {
  position: relative;
  height: 32px;
  background: #F1F5F9;
  border-radius: 6px;
  overflow: hidden;
  margin: 14px 0 6px;
}
.vmc-sim-bar-theo {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: repeating-linear-gradient(45deg, #CBD5E1 0, #CBD5E1 5px, #E2E8F0 5px, #E2E8F0 10px);
  transition: width 0.3s ease;
  border-right: 2px dashed #94A3B8;
}
.vmc-sim-bar-real {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: linear-gradient(90deg, var(--c-accent) 0%, #F97316 100%);
  transition: width 0.3s ease;
}
.vmc-sim-bar-legend {
  display: flex;
  gap: 18px;
  font-size: 11px;
  color: #94A3B8;
}
.vmc-sim-bar-legend span::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 5px;
  vertical-align: middle;
  border-radius: 2px;
}
.vmc-sim-bar-legend .lg-theo::before { background: repeating-linear-gradient(45deg, #CBD5E1 0, #CBD5E1 3px, #E2E8F0 3px, #E2E8F0 6px); }
.vmc-sim-bar-legend .lg-real::before { background: linear-gradient(90deg, var(--c-accent), #F97316); }
.vmc-sim-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}
.vmc-sim-stat {
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  padding: 14px 16px;
  text-align: center;
}
.vmc-sim-stat-label {
  font-size: 11px;
  color: #64748B;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}
.vmc-sim-stat-value {
  font-size: 22px;
  font-weight: 900;
  color: var(--c-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.vmc-sim-verdict {
  padding: 16px 20px;
  background: #fff;
  border-radius: 10px;
  border-left: 4px solid var(--c-accent);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.45;
}
.vmc-sim-verdict.is-good { border-left-color: #16A34A; background: #F0FDF4; }
.vmc-sim-verdict.is-warn { border-left-color: #EA580C; background: #FFF7ED; }
.vmc-sim-verdict.is-bad  { border-left-color: #DC2626; background: #FEF2F2; }
@media (max-width: 720px) {
  .vmc-sim-controls { grid-template-columns: 1fr; }
  .vmc-sim-stats { grid-template-columns: 1fr; }
  .vmc-sim-stat-value { font-size: 20px; }
}

/* Simulateur "Coût de l'inaction" (article Gaz +25 %) */
.gaz-sim-ctrl { margin-bottom: 20px; }
.gaz-sim-ctrl label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.gaz-sim-slider-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.gaz-sim-slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--c-accent);
  cursor: pointer;
}
.gaz-sim-slider-row output {
  min-width: 120px;
  padding: 6px 12px;
  background: var(--c-primary);
  color: var(--c-accent);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 800;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.gaz-sim-hint {
  font-size: 11px;
  color: #64748B;
  font-style: italic;
  margin-top: 6px;
  line-height: 1.4;
}
.gaz-sim-ctrl-check {
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 20px;
}
.gaz-sim-ctrl-check label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  text-transform: none;
  letter-spacing: normal;
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 4px;
}
.gaz-sim-ctrl-check input[type="checkbox"] {
  accent-color: var(--c-accent);
  cursor: pointer;
  margin-top: 2px;
  transform: scale(1.2);
}
.gaz-sim-ctrl-check .gaz-sim-hint { margin: 6px 0 0 28px; }
.gaz-sim-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin: 22px 0 16px;
}
.gaz-sim-stat {
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  padding: 16px 14px;
  text-align: center;
}
.gaz-sim-stat.is-total {
  background: var(--c-primary);
  border-color: var(--c-primary);
}
.gaz-sim-stat.is-total .gaz-sim-stat-label { color: rgba(255,255,255,0.75); }
.gaz-sim-stat.is-total .gaz-sim-stat-value { color: var(--c-accent); }
.gaz-sim-stat-label {
  font-size: 11px;
  color: #64748B;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 8px;
  line-height: 1.3;
}
.gaz-sim-stat-value {
  font-size: 22px;
  font-weight: 900;
  color: var(--c-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.gaz-sim-verdict {
  padding: 16px 20px;
  background: #fff;
  border-radius: 10px;
  border-left: 4px solid var(--c-accent);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.45;
}
.gaz-sim-verdict.is-good { border-left-color: #16A34A; background: #F0FDF4; }
.gaz-sim-verdict.is-warn { border-left-color: #EA580C; background: #FFF7ED; }
.gaz-sim-verdict.is-bad  { border-left-color: #DC2626; background: #FEF2F2; }
@media (max-width: 720px) {
  .gaz-sim-stats { grid-template-columns: 1fr; }
  .gaz-sim-stat-value { font-size: 20px; }
}

/* Box callout */
.art1-callout {
  background: #FFF9E6;
  border-left: 4px solid var(--c-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 24px 0;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.art1-callout-icon { font-size: 20px; flex-shrink: 0; margin-top: 2px; }
.art1-callout-body { font-size: 15px; line-height: 1.6; color: var(--c-text); }
.art1-callout-body strong {
  display: block;
  color: var(--c-primary);
  font-weight: 700;
  margin-bottom: 4px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Timeline */
.art1-timeline {
  position: relative;
  margin: 24px 0;
  padding-left: 32px;
}
.art1-timeline::before {
  content: '';
  position: absolute;
  left: 9px; top: 6px; bottom: 6px;
  width: 2px;
  background: var(--c-primary);
  opacity: 0.2;
}
.art1-timeline-item {
  position: relative;
  margin-bottom: 20px;
}
.art1-timeline-item:last-child { margin-bottom: 0; }
.art1-timeline-dot {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 3px solid var(--c-white);
  box-shadow: 0 0 0 2px var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}
.art1-timeline-year {
  font-size: 10px;
  font-weight: 900;
  color: var(--c-primary);
  text-align: center;
  line-height: 1;
}
.art1-timeline-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-text);
}

/* Partage */
.art1-share {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--c-border);
}
.art1-share-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.art1-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  border: 1.5px solid var(--c-border);
  color: var(--c-text);
  background: var(--c-white);
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Lato', sans-serif;
}
.art1-share-btn:hover { border-color: var(--c-primary); color: var(--c-primary); background: #f0f4f8; }
.art1-share-btn.art1-copied { border-color: #22c55e; color: #15803d; background: #f0fdf4; }

/* ─── Sidebar ─── */
.art1-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.art1-toc {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px;
}
.art1-toc-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-muted);
  margin-bottom: 14px;
}
.art1-toc-list { list-style: none; padding: 0; margin: 0; }
.art1-toc-list li { margin-bottom: 2px; }
.art1-toc-list a {
  display: block;
  font-size: 14px;
  color: var(--c-text);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 4px;
  transition: all 0.2s;
  line-height: 1.4;
}
.art1-toc-list a:hover { background: #f0f4f8; color: var(--c-primary); }
.art1-toc-list a.art1-toc-active { background: #EEF3F7; color: var(--c-primary); font-weight: 700; }

.art1-sidebar-cta {
  background: var(--c-primary);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.art1-sidebar-cta .art1-cta-eyebrow {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-accent);
  margin-bottom: 10px;
}
.art1-sidebar-cta h3 {
  font-family: 'Lato', sans-serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.4;
  margin-bottom: 8px;
}
.art1-sidebar-cta p {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 18px;
  line-height: 1.5;
}
.art1-btn-accent {
  display: inline-block;
  background: var(--c-accent);
  color: var(--c-primary);
  font-family: 'Lato', sans-serif;
  font-size: 14px;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 6px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  width: 100%;
  transition: opacity 0.2s, transform 0.15s;
}
.art1-btn-accent:hover { opacity: 0.9; transform: translateY(-1px); }

.art1-recent {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px;
}
.art1-recent-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-muted);
  margin-bottom: 16px;
}
.art1-recent-list { display: flex; flex-direction: column; gap: 16px; }
.art1-recent-item {
  display: flex;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}
.art1-recent-img {
  width: 72px; height: 52px;
  flex-shrink: 0;
  border-radius: 4px;
  overflow: hidden;
  background: var(--c-bg);
}
.art1-recent-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
.art1-recent-item:hover .art1-recent-img img { transform: scale(1.05); }
.art1-recent-cat {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--c-accent);
  margin-bottom: 3px;
}
.art1-recent-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.35;
  transition: color 0.2s;
}
.art1-recent-item:hover .art1-recent-name { color: #005080; }
.art1-recent-date { font-size: 11px; color: var(--c-muted); margin-top: 3px; }

/* ─── Encart Notre conseil ─── */
.arth-conseil {
  background: linear-gradient(135deg, var(--c-primary) 0%, #004570 100%);
  border-radius: var(--radius);
  padding: 56px 24px;
  text-align: center;
}
.arth-conseil-inner { max-width: 560px; margin: 0 auto; }
.arth-conseil-icon { font-size: 36px; margin-bottom: 14px; }
.arth-conseil h2 {
  font-family: 'Lato', sans-serif;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 900;
  color: var(--c-white);
  margin-bottom: 14px;
}
.arth-conseil p {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  line-height: 1.65;
  margin-bottom: 28px;
}
.arth-conseil-btn {
  display: inline-block;
  background: var(--c-accent);
  color: var(--c-primary);
  font-family: 'Lato', sans-serif;
  font-size: 16px;
  font-weight: 700;
  padding: 16px 36px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.15s;
}
.arth-conseil-btn:hover { opacity: 0.9; transform: translateY(-2px); }

/* ─── Modal ─── */
.rt-modal { position: fixed; inset: 0; z-index: 10000; display: flex; align-items: center; justify-content: center; }
.rt-modal[hidden] { display: none; }
.rt-modal-backdrop { position: absolute; inset: 0; background: rgba(0,30,51,0.6); backdrop-filter: blur(4px); }
.rt-modal-panel { position: relative; background: var(--c-white); border-radius: 12px; width: 90%; max-width: 460px; box-shadow: 0 24px 64px rgba(0,0,0,0.25); overflow: hidden; }
.rt-modal-header { padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--c-border); background: #F8FAFC; }
.rt-modal-title { font-family: 'Lato', sans-serif; font-size: 17px; font-weight: 800; color: var(--c-primary); margin: 0; line-height: 1.3; }
.rt-modal-close { background: none; border: none; cursor: pointer; padding: 4px; color: var(--c-muted); display: flex; align-items: center; flex-shrink: 0; }
.rt-modal-close svg { width: 20px; height: 20px; }
.rt-modal-close:hover { color: var(--c-primary); }

/* ─── Responsive ─── */
/* Écrans intermédiaires : sidebar plus compacte pour donner de l'air au contenu */
@media (max-width: 1180px) {
  .art1-layout { grid-template-columns: 1fr 300px; gap: 36px; padding: 50px 20px; }
  .art1-sidebar-cta { padding: 20px; }
  .art1-sidebar-cta h3 { font-size: 16px; }
}
/* Tablette / petit laptop : passage en single column */
@media (max-width: 1023px) {
  .arth-hero { grid-template-columns: 1fr; min-height: auto; }
  .arth-hero-left { padding: 36px 24px; }
  .arth-hero-right { height: 260px; }
  .arth-hero-right img { clip-path: none; }
  .art1-layout { grid-template-columns: 1fr; padding: 40px 20px; gap: 32px; }
  .art1-sidebar { position: static; }
  .art1-sidebar-cta { padding: 24px; }
  .art1-sidebar-cta h3 { font-size: 17px; }
}
/* Filet de sécurité : tout élément interne ne déborde jamais */
.art1-content, .art1-sidebar { min-width: 0; }
.art1-content img,
.art1-content table,
.art1-content figure { max-width: 100%; }
.art1-content .art1-table-wrap { overflow-x: auto; }

@media (max-width: 600px) {
  .arth-hero-left { padding: 28px 20px; gap: 16px; }
  .art1-share { flex-wrap: wrap; }
}

/* ─── Simulateur MaPrimeRénov' (catégorie, aides, conditions, contact) ── */
.mpr-sim *, .mpr-sim *::before, .mpr-sim *::after { box-sizing: border-box; }
.mpr-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 22px; margin-bottom: 20px; }
.mpr-field label, .mpr-label {
  display: block; font-size: 12px; font-weight: 700; color: var(--c-primary);
  text-transform: uppercase; letter-spacing: .05em; margin-bottom: 8px;
}
.mpr-euro { display: flex; align-items: center; background: #fff; border: 1px solid #CBD5E1; border-radius: 6px; overflow: hidden; }
.mpr-euro:focus-within { outline: 2px solid var(--c-accent); outline-offset: 1px; }
.mpr-euro input { flex: 1; min-width: 0; border: 0; outline: 0; padding: 11px 12px; font: inherit; font-size: 17px; font-weight: 700; color: var(--c-primary); background: transparent; }
.mpr-euro span { padding: 0 12px; color: var(--c-muted); font-weight: 700; }
.mpr-hint { font-size: 12px; color: var(--c-muted); margin: 6px 0 0; line-height: 1.4; }
.mpr-field select {
  width: 100%; padding: 11px 12px; border: 1px solid #CBD5E1; border-radius: 6px;
  background: #fff; font: inherit; font-size: 16px; font-weight: 700; color: var(--c-primary); cursor: pointer;
}
.mpr-seg { display: flex; border: 1px solid #CBD5E1; border-radius: 6px; overflow: hidden; background: #fff; }
.mpr-seg button { flex: 1; padding: 11px 8px; border: 0; background: transparent; font: inherit; font-size: 13px; font-weight: 700; color: var(--c-primary); cursor: pointer; }
.mpr-seg button + button { border-left: 1px solid #CBD5E1; }
.mpr-seg button[aria-checked="true"] { background: var(--c-primary); color: #fff; }
.mpr-dpe { display: flex; flex-wrap: wrap; gap: 6px; }
.mpr-dpe button {
  min-width: 38px; height: 40px; padding: 0 6px; border: 2px solid transparent; border-radius: 6px;
  font: inherit; font-size: 16px; font-weight: 900; color: #fff; cursor: pointer; transition: transform .15s;
}
.mpr-dpe [data-dpe="A"] { background: #009C6D; }
.mpr-dpe [data-dpe="B"] { background: #52B153; }
.mpr-dpe [data-dpe="C"] { background: #A5CC74; color: var(--c-primary); }
.mpr-dpe [data-dpe="D"] { background: #F4E70F; color: var(--c-primary); }
.mpr-dpe [data-dpe="E"] { background: #F0B40F; color: var(--c-primary); }
.mpr-dpe [data-dpe="F"] { background: #EB8235; }
.mpr-dpe [data-dpe="G"] { background: #D7221F; }
.mpr-dpe .mpr-dpe-unknown { background: #fff; color: var(--c-primary); border: 1px solid #CBD5E1; font-size: 12px; font-weight: 700; padding: 0 10px; }
.mpr-dpe button[aria-checked="true"] { border-color: var(--c-primary); box-shadow: inset 0 0 0 2px #fff; transform: translateY(-3px); }

.mpr-status {
  display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--c-border);
  border-radius: 8px; padding: 12px 14px; font-size: 15px; color: var(--c-primary); margin-bottom: 14px;
}
.mpr-swatch { display: inline-block; width: 14px; height: 14px; border-radius: 4px; flex-shrink: 0; }
.mpr-table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--c-border); border-radius: 10px; margin-bottom: 16px; }
.mpr-table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: 14px; }
.mpr-table th, .mpr-table td { padding: 12px; text-align: left; border-bottom: 1px solid #EEF2F6; vertical-align: middle; transition: opacity .2s, background .2s; }
.mpr-table tbody tr:last-child th, .mpr-table tbody tr:last-child td { border-bottom: 0; }
.mpr-table thead th { background: var(--c-primary); color: #fff; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; line-height: 1.3; }
.mpr-table thead small { display: block; margin-top: 3px; font-size: 11px; font-weight: 500; text-transform: none; letter-spacing: 0; opacity: .8; }
.mpr-table tbody th { font-weight: 800; color: var(--c-primary); white-space: nowrap; }
.mpr-table tbody th .mpr-swatch { margin-right: 8px; vertical-align: -2px; }
.mpr-cat-sub { display: block; margin: 2px 0 0 22px; font-size: 11px; font-weight: 600; color: var(--c-muted); }
.mpr-table td strong { display: block; font-size: 17px; color: var(--c-primary); }
.mpr-table td span { font-size: 12px; color: var(--c-muted); }
.mpr-na { font-style: italic; }
.mpr-table tr.is-match th, .mpr-table tr.is-match td { background: var(--mpr-cat-bg); }
.mpr-table tr.is-match th { box-shadow: inset 5px 0 0 var(--mpr-cat); }
.mpr-table tr.is-dim th, .mpr-table tr.is-dim td { opacity: .4; }
.mpr-table td.is-off { opacity: .3; }
.mpr-table td.is-off strong { text-decoration: line-through; }

.mpr-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 14px; }
.mpr-card { background: #fff; border: 1px solid var(--c-border); border-radius: 10px; padding: 14px 16px; }
.mpr-card h4, .mpr-conds h4 { margin: 0 0 6px; font-size: 13px; font-weight: 800; color: var(--c-primary); text-transform: uppercase; letter-spacing: .04em; }
.mpr-card p { margin: 0; font-size: 14px; line-height: 1.5; color: var(--c-text); }
.mpr-conds { background: #fff; border: 1px solid var(--c-border); border-radius: 10px; padding: 14px 16px 8px; margin-bottom: 12px; }
.mpr-conds ul { margin: 0; padding-left: 18px; font-size: 14px; line-height: 1.55; color: var(--c-text); }
.mpr-conds li { margin-bottom: 6px; }
.mpr-privacy { margin: 0 0 14px; font-size: 12px; color: var(--c-muted); }
.mpr-cta { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; }
.mpr-cta span { font-size: 13px; color: var(--c-muted); }
.mpr-cta-btn {
  background: var(--c-accent); color: var(--c-primary); border: 0; border-radius: 8px;
  padding: 13px 22px; font: inherit; font-size: 15px; font-weight: 800; cursor: pointer;
}
.mpr-cta-btn:hover { filter: brightness(.95); }
.mpr-cta-btn:disabled { opacity: .6; cursor: wait; }
.mpr-form { background: #fff; border: 1px solid var(--c-border); border-radius: 10px; padding: 18px; margin-top: 4px; scroll-margin-top: 90px; }
.mpr-form h4 { margin: 0 0 12px; font-size: 16px; color: var(--c-primary); }
.mpr-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; }
.mpr-f label { display: block; margin-bottom: 5px; font-size: 12px; font-weight: 700; color: var(--c-primary); }
.mpr-f input, .mpr-f select, .mpr-f textarea {
  width: 100%; padding: 10px 12px; border: 1px solid #CBD5E1; border-radius: 6px;
  font: inherit; font-size: 15px; color: var(--c-text); background: #fff;
}
.mpr-f textarea { resize: vertical; line-height: 1.45; }
.mpr-f input:focus, .mpr-f select:focus, .mpr-f textarea:focus { outline: 2px solid var(--c-accent); outline-offset: 1px; }
.mpr-f-full { grid-column: 1 / -1; }
.mpr-form-legal { margin: 12px 0; font-size: 12px; line-height: 1.45; color: var(--c-muted); }
.mpr-form-error { margin: 0 0 12px; padding: 10px 12px; border: 1px solid #FECACA; border-radius: 6px; background: #FEF2F2; color: #991B1B; font-size: 14px; }
.mpr-success { margin-top: 12px; padding: 16px; border: 1px solid #BBF7D0; border-radius: 10px; background: #F0FDF4; color: #166534; font-weight: 700; }
.mpr-agence { padding: 10px 12px; border: 1px solid #BFDBFE; border-radius: 6px; background: #EFF6FF; color: var(--c-primary); font-size: 14px; line-height: 1.45; }
.mpr-agence a, .mpr-success a, .mpr-form-error a { color: inherit; font-weight: 800; white-space: nowrap; }
@media (max-width: 720px) {
  .mpr-inputs, .mpr-cards, .mpr-form-grid { grid-template-columns: 1fr; }
}