/* =========================================================
   Bâti Rénov' / Rénovation Maison Essonne — Design system
   Thème "plan d'architecte" : grille technique, lignes de cote,
   papier chaud + bleu plan + accent cuivre.
   ========================================================= */

:root {
  --ink:        #1D2126;
  --blueprint:  #16324F;
  --blueprint-line: #3E7CB1;
  --paper:      #F7F5F0;
  --paper-dim:  #EFEBE1;
  --concrete:   #8A8F98;
  --copper:     #C1622D;
  --copper-dim: #E0A26C;
  --white:      #FFFFFF;

  --font-display: 'Space Grotesk', 'Archivo', sans-serif;
  --font-body: 'Source Sans 3', 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 2px;
  --border: 1px solid rgba(22, 50, 79, 0.18);
  --max-width: 1180px;
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
}

/* -------------------- Blueprint grid background -------------------- */
.blueprint-bg {
  background-image:
    linear-gradient(rgba(62, 124, 177, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62, 124, 177, 0.10) 1px, transparent 1px);
  background-size: 32px 32px;
}

.dim-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper);
}

/* -------------------- Header -------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--blueprint);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.logo .mark {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--copper);
  transform: rotate(45deg);
}

.logo .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--concrete);
  font-weight: 400;
  letter-spacing: 0.04em;
}

nav.main-nav {
  display: flex;
  gap: 28px;
}

nav.main-nav a {
  font-size: 14px;
  text-decoration: none;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
}

nav.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--copper);
  transition: right 0.2s ease;
}

nav.main-nav a:hover::after,
nav.main-nav a.active::after {
  right: 0;
}

.nav-toggle { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 22px;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--copper);
  color: var(--white);
  box-shadow: 3px 3px 0 var(--blueprint);
}
.btn-primary:hover { box-shadow: 4px 4px 0 var(--blueprint); }

.btn-ghost {
  background: transparent;
  color: var(--blueprint);
  border: 1px solid var(--blueprint);
}

.btn-header { display: none; }
@media (min-width: 720px) { .btn-header { display: inline-flex; } }

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 14.5px;
  color: var(--blueprint);
  text-decoration: none;
  white-space: nowrap;
}

.phone-link svg { width: 16px; height: 16px; flex-shrink: 0; }
.phone-link:hover { color: var(--copper); }

.phone-link-header { display: none; }
@media (min-width: 900px) { .phone-link-header { display: inline-flex; } }

.hero-phone-line {
  margin: -10px 0 28px;
  font-size: 14.5px;
  color: #4A4F55;
}

.hero-phone-line .phone-link {
  font-size: 16px;
  font-weight: 600;
}

/* -------------------- Hero -------------------- */
.hero {
  padding: 84px 0 64px;
  border-bottom: var(--border);
  position: relative;
  overflow: hidden;
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--copper);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-eyebrow::before {
  content: '';
  width: 22px; height: 1px;
  background: var(--copper);
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--blueprint);
  margin: 0 0 20px;
}

h1 .accent { color: var(--copper); }

.hero-lede {
  font-size: 18px;
  color: #3A3F45;
  max-width: 46ch;
  margin: 0 0 30px;
}

.hero-cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.hero-trust {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--concrete);
}

.hero-trust strong {
  color: var(--blueprint);
  font-size: 15px;
  font-family: var(--font-display);
  display: block;
}

/* Blueprint house sketch (legacy, non utilisé après remplacement par photo) */
.plan-figure {
  position: relative;
  border: var(--border);
  background: var(--white);
  padding: 18px;
}

.plan-figure svg { width: 100%; height: auto; display: block; }

.plan-figure .caption {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--concrete);
  padding-top: 10px;
  border-top: 1px dashed rgba(138,143,152,0.4);
  margin-top: 12px;
}

/* -------------------- Section shell -------------------- */
section { padding: 72px 0; }
section.alt { background: var(--paper-dim); border-top: var(--border); border-bottom: var(--border); }

.section-head {
  max-width: 640px;
  margin: 0 0 44px;
}

.section-head .dim-label { margin-bottom: 10px; display: block; }

h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 36px);
  color: var(--blueprint);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.section-lede { color: #4A4F55; font-size: 16px; margin: 0; }

/* -------------------- Services grid -------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: rgba(22,50,79,0.18);
  border: var(--border);
}

.service-card {
  background: var(--white);
  padding: 30px 26px;
  text-decoration: none;
  color: var(--ink);
  transition: background 0.15s ease;
  position: relative;
}

.service-card:hover { background: var(--paper-dim); }

.service-card .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--copper);
  display: block;
  margin-bottom: 14px;
}

.service-card .icon-wrap {
  width: 40px;
  height: 40px;
  margin-bottom: 14px;
  color: var(--copper);
}
.service-card .icon-wrap svg { width: 100%; height: 100%; }

.service-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--blueprint);
  margin: 0 0 10px;
}

.service-card p {
  font-size: 14.5px;
  color: #565B61;
  margin: 0 0 16px;
}

.service-card .go {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--copper);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* -------------------- Process steps -------------------- */
.process-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}

.process-step {
  border-left: 2px solid var(--copper);
  padding-left: 18px;
}

.process-step .step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--concrete);
}

.process-step h4 {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--blueprint);
  margin: 6px 0 8px;
}

.process-step p { font-size: 14.5px; color: #565B61; margin: 0; }

/* -------------------- Trust bar -------------------- */
.trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: space-between;
  border-top: var(--border);
  border-bottom: var(--border);
  padding: 30px 0;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--blueprint);
  font-weight: 600;
}

.trust-item .dot {
  width: 8px; height: 8px;
  background: var(--copper);
  border-radius: 50%;
  flex-shrink: 0;
}

/* -------------------- Testimonials -------------------- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.testimonial {
  background: var(--white);
  border: var(--border);
  padding: 26px;
}

.testimonial .stars {
  color: var(--copper);
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.testimonial p.quote {
  font-size: 15px;
  color: #3A3F45;
  margin: 0 0 16px;
  font-style: italic;
}

.testimonial .author {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--concrete);
}

/* -------------------- FAQ -------------------- */
.faq-item {
  border-bottom: var(--border);
  padding: 20px 0;
}

.faq-item summary {
  font-family: var(--font-display);
  font-size: 16.5px;
  color: var(--blueprint);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  color: var(--copper);
  font-size: 20px;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] summary::after { content: '–'; }

.faq-item .faq-answer {
  margin-top: 12px;
  font-size: 14.5px;
  color: #565B61;
  max-width: 65ch;
}

/* -------------------- Contact / devis form -------------------- */
.contact-section {
  background: var(--blueprint);
  color: var(--paper);
  position: relative;
}

.contact-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(247,245,240,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247,245,240,0.06) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.contact-section .wrap {
  position: relative;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
}

.contact-section h2 { color: var(--white); }
.contact-section .section-lede { color: rgba(247,245,240,0.75); }
.contact-section .dim-label { color: var(--copper-dim); }

.contact-info-list {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-info-item {
  font-size: 14.5px;
  color: rgba(247,245,240,0.85);
}

.contact-info-item strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--copper-dim);
  margin-bottom: 4px;
}

.devis-form {
  background: var(--paper);
  color: var(--ink);
  padding: 34px;
  border-radius: var(--radius);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-field { margin-bottom: 16px; }

.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--concrete);
  margin-bottom: 6px;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid rgba(22,50,79,0.28);
  border-radius: var(--radius);
  background: var(--white);
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--ink);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 2px solid var(--copper);
  outline-offset: 1px;
}

.form-field textarea { resize: vertical; min-height: 96px; }

.form-consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12.5px;
  color: var(--concrete);
  margin-bottom: 20px;
}

.form-consent input { margin-top: 3px; }

/* Honeypot anti-spam : masqué visuellement mais accessible aux robots,
   ce qui est justement le but (les humains ne le voient/remplissent jamais). */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  margin-top: 14px;
  font-size: 14px;
  font-family: var(--font-mono);
  display: none;
}

.form-status.visible { display: block; }
.form-status.ok { color: #2E7D46; }
.form-status.err { color: #B23A2E; }

/* -------------------- Footer -------------------- */
footer.site-footer {
  background: var(--ink);
  color: rgba(247,245,240,0.7);
  padding: 46px 0 28px;
  font-size: 13.5px;
}

footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

footer .foot-col strong {
  display: block;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 15px;
  margin-bottom: 10px;
}

footer .foot-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

footer .foot-links a { text-decoration: none; color: rgba(247,245,240,0.7); }
footer .foot-links a:hover { color: var(--copper-dim); }

.foot-bottom {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid rgba(247,245,240,0.12);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: rgba(247,245,240,0.45);
  text-align: center;
}

/* -------------------- Service page specific -------------------- */
.service-hero {
  padding: 56px 0 48px;
  border-bottom: var(--border);
}

.service-hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.photo-frame {
  position: relative;
  border: var(--border);
  background: var(--white);
  padding: 10px;
}

.photo-frame .photo-inner {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-image:
    linear-gradient(rgba(62, 124, 177, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62, 124, 177, 0.10) 1px, transparent 1px);
  background-size: 24px 24px;
  background-color: var(--paper-dim);
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.photo-frame .caption {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--concrete);
  padding: 10px 4px 2px;
}

@media (max-width: 900px) {
  .service-hero .wrap { grid-template-columns: 1fr; gap: 32px; }
  .photo-frame { order: -1; }
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--concrete);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--blueprint); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.benefit-item { display: flex; gap: 14px; }

.benefit-item .icon {
  flex-shrink: 0;
  width: 38px; height: 38px;
  border: 1px solid var(--copper);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 14px;
}

.benefit-item h4 {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--blueprint);
  margin: 0 0 6px;
}

.benefit-item p { font-size: 14px; color: #565B61; margin: 0; }

.other-services {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.other-services a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--blueprint);
  text-decoration: none;
  border: 1px solid rgba(22,50,79,0.25);
  padding: 8px 14px;
  border-radius: var(--radius);
}

.other-services a:hover { border-color: var(--copper); color: var(--copper); }

/* -------------------- Mobile -------------------- */
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .contact-section .wrap { grid-template-columns: 1fr; }
  .plan-figure { order: -1; }
}

@media (max-width: 719px) {
  nav.main-nav {
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: var(--paper);
    border-bottom: var(--border);
    flex-direction: column;
    padding: 18px 28px 26px;
    gap: 4px;
    display: none;
  }
  nav.main-nav.open { display: flex; }
  nav.main-nav a { padding: 10px 0; border-bottom: 1px solid rgba(22,50,79,0.08); }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--blueprint); }
  .form-row { grid-template-columns: 1fr; gap: 0; }
}