/* ============ Peinture Mirabel — peintres en bâtiment ============ */
/* Palette: blanc froid #fafbfc / bleu acier #3b5266 / or pâle #c9a96e */

:root {
  --bg: #fafbfc;
  --bg-2: #f1f3f6;
  --paper: #ffffff;
  --ink: #0f1722;
  --ink-2: #2c3a4a;
  --ink-soft: #5a6878;
  --steel: #3b5266;
  --steel-dark: #243846;
  --steel-soft: #b9c5d2;
  --gold: #c9a96e;
  --gold-soft: #e7d8b6;
  --line: #dde2e8;
  --line-strong: #c8d0db;
  --max: 1240px;

  --sans: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}

.mono {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ================== TOPBAR ================== */
.topbar {
  background: var(--steel-dark);
  color: var(--steel-soft);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}
.topbar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.55rem clamp(1rem, 4vw, 2.5rem);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
@media (max-width: 720px) { .topbar-inner > :nth-child(2) { display: none; } }

/* ================== HEADER ================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 2.5rem);
  background: rgba(250, 251, 252, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.005em;
}
.brand strong { font-weight: 800; color: var(--steel-dark); }
.brand-logo { width: 30px; height: 30px; display: block; }

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.92rem;
  font-weight: 500;
}
.nav a { color: var(--ink-2); transition: color .2s ease; }
.nav a:hover { color: var(--steel); }
.cta-link {
  background: var(--steel);
  color: var(--paper);
  padding: 0.55rem 1.05rem;
  border-radius: 4px;
  border: 1px solid var(--steel);
  transition: background .2s ease;
}
.cta-link:hover { background: var(--steel-dark); color: var(--paper); }

.nav-toggle {
  display: none;
  background: transparent; border: 0;
  width: 40px; height: 40px; padding: 8px;
  cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink); margin: 5px 0; }

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 100%; right: 1rem; left: 1rem;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 0.4rem;
    transform-origin: top;
    transform: scaleY(0);
    opacity: 0;
    transition: transform .2s ease, opacity .2s ease;
    box-shadow: 0 18px 40px -20px rgba(15,23,34,.18);
  }
  .nav.open { transform: scaleY(1); opacity: 1; }
  .nav a { padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--line); }
  .nav a:last-child { border-bottom: 0; }
  .cta-link { background: transparent; color: var(--steel-dark); border: 0; }
  .cta-link:hover { background: var(--bg-2); }
}

/* ================== BUTTONS ================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, color .2s ease;
  font-family: inherit;
}
.btn-primary {
  background: var(--steel);
  color: var(--paper);
}
.btn-primary:hover { background: var(--steel-dark); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ================== HERO ================== */
.hero {
  padding: clamp(2rem, 5vw, 4rem) 0 clamp(2.5rem, 6vw, 5rem);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; } }

.hero-copy .eyebrow {
  display: inline-block;
  color: var(--steel);
  border-left: 2px solid var(--gold);
  padding-left: 0.7rem;
  margin: 0 0 1.5rem;
}
.hero-copy h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.7rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 1.2rem;
  color: var(--ink);
}
.hero-copy h1 .accent {
  color: var(--steel);
  background: linear-gradient(180deg, transparent 65%, var(--gold-soft) 65%, var(--gold-soft) 90%, transparent 90%);
  padding: 0 0.15em;
}
.hero-copy .lede {
  max-width: 56ch;
  font-size: 1.05rem;
  color: var(--ink-soft);
  margin: 0 0 1.8rem;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 2.2rem;
}

.spec-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 1.5rem;
}
.spec {
  padding: 1.1rem 1rem 1.1rem 0;
  border-right: 1px solid var(--line);
}
.spec:last-child { border-right: 0; }
.spec span {
  display: block;
  color: var(--ink-soft);
  margin-bottom: 0.3rem;
}
.spec strong {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--steel-dark);
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.01em;
}

.hero-figure {
  margin: 0;
  position: relative;
}
.hero-figure img {
  width: 100%;
  height: clamp(320px, 56vh, 540px);
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}
.hero-figure figcaption {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(36, 56, 70, 0.92);
  color: var(--paper);
  padding: 0.5rem 0.8rem;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ================== SECTIONS ================== */
.section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  border-top: 1px solid var(--line);
}
.section-eyebrow {
  color: var(--steel);
  margin: 0 0 0.7rem;
}
.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.7rem);
  line-height: 1.15;
  letter-spacing: -0.018em;
  font-weight: 700;
  margin: 0 0 1.1rem;
  max-width: 28ch;
}
.section-lede {
  max-width: 64ch;
  font-size: 1.03rem;
  color: var(--ink-soft);
  margin: 0 0 2.5rem;
}

/* ================== ÉTAPES ================== */
.section-etapes { background: var(--paper); }
.etapes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper);
}
.etape {
  padding: 1.6rem 1.4rem;
  border-right: 1px solid var(--line);
  position: relative;
}
.etape:last-child { border-right: 0; }
@media (max-width: 720px) {
  .etape { border-right: 0; border-bottom: 1px solid var(--line); }
  .etape:last-child { border-bottom: 0; }
}
.etape header {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1rem;
}
.etape header .mono {
  display: inline-block;
  background: var(--steel-dark);
  color: var(--gold-soft);
  padding: 0.25rem 0.55rem;
  border-radius: 3px;
  align-self: flex-start;
  font-size: 0.72rem;
}
.etape h3 {
  font-size: 1.18rem;
  font-weight: 700;
  margin: 0;
  color: var(--ink);
}
.etape p { color: var(--ink-soft); margin: 0 0 1rem; font-size: 0.95rem; }
.check { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.35rem; }
.check li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.85rem;
  color: var(--ink-2);
}
.check li::before {
  content: "✓";
  position: absolute;
  left: 0; top: -1px;
  color: var(--gold);
  font-weight: 700;
}

/* ================== VOLUMES ================== */
.section-volumes { background: var(--bg-2); }
.volumes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.vol {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.5rem 1.4rem;
}
.vol span {
  display: block;
  color: var(--ink-soft);
  margin-bottom: 0.4rem;
}
.vol strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--steel-dark);
  letter-spacing: -0.015em;
  font-feature-settings: "tnum" 1;
  margin-bottom: 0.6rem;
}
.vol p { font-size: 0.92rem; color: var(--ink-soft); margin: 0 0 1.1rem; }
.vol .bar {
  height: 6px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}
.vol .bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--steel), var(--gold));
  transition: width 1.2s cubic-bezier(.2,.8,.2,1);
  margin: 0;
}

/* ================== GALERIE ================== */
.section-galerie { background: var(--paper); }
.galerie-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}
.galerie-grid figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg);
}
.galerie-grid img {
  width: 100%;
  height: 230px;
  object-fit: cover;
  transition: transform .5s ease;
}
.galerie-grid figure:hover img { transform: scale(1.05); }
.galerie-grid figcaption {
  position: absolute;
  top: 10px;
  left: 10px;
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  background: rgba(15, 23, 34, 0.86);
  color: var(--paper);
  padding: 0.4rem 0.7rem;
  border-radius: 3px;
  font-size: 0.78rem;
}
.galerie-grid figcaption .mono {
  color: var(--gold-soft);
  font-size: 0.7rem;
}
/* Before/After hover swap */
.galerie-grid figure.ba { position: relative; }
.galerie-grid figure.ba .ba-before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 230px;
  object-fit: cover;
  opacity: 0;
  transition: opacity .35s ease;
  pointer-events: none;
}
.galerie-grid figure.ba:hover .ba-before { opacity: 1; }
.galerie-grid figure.ba:hover .ba-after { transform: none; }
.galerie-grid figure.ba:hover img { transform: none; }
.galerie-grid .ba-hint {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(15, 23, 34, 0.86);
  color: var(--gold-soft);
  padding: 0.3rem 0.6rem;
  border-radius: 3px;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  z-index: 2;
}

/* ================== PROCESS (4 phases horizontal track) ================== */
.process-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.process-track::before {
  content: "";
  position: absolute;
  top: 50%; left: 0; right: 0;
  height: 1px;
  background: var(--gold);
  opacity: 0.4;
  pointer-events: none;
}
@media (max-width: 880px) {
  .process-track { grid-template-columns: 1fr; }
  .process-track::before { display: none; }
}
.phase {
  padding: 1.7rem 1.3rem;
  border-right: 1px solid var(--line);
  background: var(--paper);
  position: relative;
}
.phase:last-child { border-right: 0; }
@media (max-width: 880px) {
  .phase { border-right: 0; border-bottom: 1px solid var(--line); }
  .phase:last-child { border-bottom: 0; }
}
.phase-tag {
  display: inline-block;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.phase h3 {
  font-size: 1.18rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--ink);
}
.phase p { font-size: 0.93rem; color: var(--ink-soft); margin: 0; }

/* ================== ZONES ================== */
.section-zones { background: var(--bg-2); }
.zones-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}
.zones-cols h4 {
  color: var(--steel-dark);
  margin: 0 0 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line-strong);
  font-size: 0.78rem;
}
.zones-cols ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}
.zones-cols li {
  font-size: 0.98rem;
  color: var(--ink-2);
  padding-left: 1rem;
  position: relative;
}
.zones-cols li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.65em;
  width: 6px; height: 1px;
  background: var(--gold);
}

/* ================== CAS ================== */
.section-cas { background: var(--paper); }
.cas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}
.cas {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.5rem 1.4rem;
  background: var(--bg);
}
.cas .mono { color: var(--gold); margin-bottom: 0.4rem; display: block; }
.cas h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.7rem;
  color: var(--ink);
}
.cas p { color: var(--ink-soft); margin: 0 0 1.2rem; font-size: 0.95rem; }
.cas-meta {
  color: var(--steel-dark);
  border-top: 1px dashed var(--line-strong);
  padding-top: 0.7rem;
  display: block;
  font-size: 0.72rem;
}

/* ================== FAQ ================== */
.section-faq { background: var(--bg-2); }
.faq-list {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.faq-list details {
  border-bottom: 1px solid var(--line);
}
.faq-list details:last-child { border-bottom: 0; }
.faq-list summary {
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--ink);
  padding: 1.1rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: background .15s ease;
}
.faq-list summary:hover { background: var(--bg); }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  color: var(--steel);
  font-size: 1.3rem;
  font-weight: 400;
  transition: transform .2s ease;
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details[open] summary { background: var(--bg); }
.faq-list p {
  margin: 0;
  padding: 0 1.4rem 1.3rem;
  color: var(--ink-soft);
  max-width: 78ch;
  font-size: 0.97rem;
}

/* ================== SOUMISSION ================== */
.section-soumission { background: var(--paper); }
.soumission-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}
@media (max-width: 980px) { .soumission-grid { grid-template-columns: 1fr; } }
.soumission-points {
  list-style: none;
  padding: 0;
  margin: 1.4rem 0;
  display: grid;
  gap: 0.55rem;
  font-size: 0.82rem;
}
.soumission-points li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--ink-2);
}
.soumission-points li::before {
  content: "›";
  position: absolute;
  left: 0; top: -1px;
  color: var(--gold);
  font-weight: 700;
  font-size: 1.1rem;
}
.soumission-direct { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.2rem; }

.soumission-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  background: var(--bg-2);
  padding: clamp(1.4rem, 3vw, 2.2rem);
  border-radius: 6px;
  border: 1px solid var(--line);
}
.soumission-form label { display: grid; gap: 0.3rem; font-size: 0.88rem; }
.soumission-form label.full,
.soumission-form .full { grid-column: 1 / -1; }
.soumission-form span { color: var(--steel-dark); font-weight: 600; }
.soumission-form input,
.soumission-form select,
.soumission-form textarea {
  font-family: inherit;
  font-size: 0.98rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.soumission-form input:focus,
.soumission-form select:focus,
.soumission-form textarea:focus {
  outline: 0;
  border-color: var(--steel);
  box-shadow: 0 0 0 3px rgba(59, 82, 102, 0.16);
}
.soumission-form textarea { resize: vertical; min-height: 110px; }
.form-note { color: var(--ink-soft); margin: 0; grid-column: 1 / -1; font-size: 0.7rem; }

/* ================== FOOTER ================== */
.site-footer {
  background: var(--steel-dark);
  color: var(--steel-soft);
  padding: 3rem 0 1.5rem;
  border-top: 4px solid var(--gold);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; } }
.brand-footer { color: var(--paper); font-size: 1.15rem; margin: 0 0 0.5rem; }
.brand-footer strong { font-weight: 800; }
.footer-baseline { color: var(--steel-soft); max-width: 32ch; opacity: 0.85; }
.site-footer h4 {
  color: var(--gold-soft);
  margin: 0 0 0.7rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(201, 169, 110, 0.3);
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { padding: 0.18rem 0; font-size: 0.93rem; }
.site-footer a { transition: color .2s ease; }
.site-footer a:hover { color: var(--gold); }
.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  color: rgba(185, 197, 210, 0.7);
}

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