/* ============================================================
   MENUISERIES CHARDON SA — styles.css
   Mobile-first · CSS3 pur · Variables CSS
   ============================================================ */

/* ── VARIABLES ─────────────────────────────────────────────── */
:root {
  --color-dark:     #1C1209;
  --color-oak:      #4A2E0E;
  --color-gold:     #D4A96A;
  --color-ivory:    #F5F0E8;
  --color-green:    #4CAF50;
  --color-green-hv: #3d9140;
  --color-text:     #2d1f0f;
  --color-muted:    #7a6a58;
  --color-border:   #e2ddd5;
  --color-white:    #ffffff;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(28,18,9,.08);
  --shadow-md: 0 4px 16px rgba(28,18,9,.12);
  --shadow-lg: 0 8px 32px rgba(28,18,9,.18);

  --container: 1180px;
  --header-h: 64px;
}

/* ── RESET ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-ivory);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }

/* ── UTILITAIRES ────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}
.container {
  width: 100%; max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-md);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-lg);
  text-align: center;
}

/* ── BOUTONS ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background .2s, color .2s, border-color .2s, transform .15s;
  text-align: center;
}
.btn:focus-visible { outline: 3px solid var(--color-gold); outline-offset: 3px; }
.btn-primary {
  background: var(--color-green);
  color: var(--color-white);
  border-color: var(--color-green);
}
.btn-primary:hover { background: var(--color-green-hv); border-color: var(--color-green-hv); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,.6);
}
.btn-outline:hover { background: rgba(255,255,255,.12); border-color: var(--color-white); }
.btn-secondary {
  background: var(--color-dark);
  color: var(--color-ivory);
  border-color: var(--color-dark);
}
.btn-secondary:hover { background: var(--color-oak); border-color: var(--color-oak); }
.btn-large { padding: 1rem 2.5rem; font-size: 1.05rem; }

/* ── HEADER ─────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--color-dark);
  height: var(--header-h);
  box-shadow: var(--shadow-md);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-sm);
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-ivory);
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.logo em { color: var(--color-gold); font-style: normal; }
.logo-icon { color: var(--color-gold); font-size: 1.2rem; }

.main-nav {
  display: none;
  position: absolute;
  top: var(--header-h);
  left: 0; right: 0;
  background: var(--color-dark);
  padding: var(--space-sm) var(--space-md) var(--space-md);
  border-top: 1px solid rgba(255,255,255,.08);
}
.main-nav.is-open { display: block; }
.main-nav ul { display: flex; flex-direction: column; gap: 0.25rem; }
.main-nav a {
  display: block;
  padding: 0.6rem var(--space-sm);
  color: rgba(245,240,232,.85);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background .15s, color .15s;
}
.main-nav a:hover, .main-nav a:focus-visible {
  background: rgba(212,169,106,.15);
  color: var(--color-gold);
}
.header-phone {
  display: none;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-gold);
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  transition: color .15s;
}
.header-phone:hover { color: var(--color-ivory); }
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none; border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block; width: 100%; height: 2px;
  background: var(--color-ivory);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

/* ── HERO ────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: var(--color-dark);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(74,46,14,.9) 0%, rgba(28,18,9,.95) 60%);
  z-index: 0;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    radial-gradient(ellipse at 70% 50%, rgba(212,169,106,.08) 0%, transparent 60%),
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,.01) 40px,
      rgba(255,255,255,.01) 41px
    );
}
.hero-content {
  position: relative; z-index: 1;
  padding-block: var(--space-2xl) var(--space-xl);
  max-width: 720px;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-sm);
}
.hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-ivory);
  margin-bottom: var(--space-md);
}
.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: rgba(245,240,232,.75);
  margin-bottom: var(--space-lg);
  max-width: 520px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ── DIFFÉRENCIANTS ──────────────────────────────────────────── */
.differentiants {
  padding-block: var(--space-xl);
  background: var(--color-ivory);
}
.diff-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
.diff-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  transition: box-shadow .2s, transform .2s;
}
.diff-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.diff-icon { font-size: 2.2rem; margin-bottom: var(--space-sm); }
.diff-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}
.diff-card p { font-size: 0.9rem; color: var(--color-muted); line-height: 1.55; }

/* ── SERVICES ────────────────────────────────────────────────── */
.services {
  padding-block: var(--space-xl);
  background: var(--color-dark);
}
.services .section-title { color: var(--color-ivory); }
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
.service-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(212,169,106,.2);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  transition: background .2s, border-color .2s;
}
.service-card:hover {
  background: rgba(212,169,106,.07);
  border-color: rgba(212,169,106,.5);
}
.service-visual { font-size: 2rem; margin-bottom: var(--space-sm); }
.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--color-gold);
  margin-bottom: 0.5rem;
}
.service-card p { font-size: 0.9rem; color: rgba(245,240,232,.75); margin-bottom: 0.4rem; }
.service-price {
  font-weight: 600 !important;
  color: var(--color-gold) !important;
  font-size: 0.85rem !important;
  margin-top: var(--space-sm) !important;
}

/* ── TÉMOIGNAGE ──────────────────────────────────────────────── */
.testimonial {
  padding-block: var(--space-xl);
  background: var(--color-oak);
}
.testimonial-block {
  max-width: 760px;
  margin-inline: auto;
  text-align: center;
  position: relative;
}
.testimonial-block p {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3vw, 1.45rem);
  font-style: italic;
  color: var(--color-ivory);
  line-height: 1.55;
  margin-bottom: var(--space-sm);
}
.testimonial-block cite {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-gold);
  text-transform: uppercase;
}

/* ── À PROPOS ────────────────────────────────────────────────── */
.about {
  padding-block: var(--space-xl);
  background: var(--color-ivory);
}
.about-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: center;
}
.about-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  color: var(--color-dark);
  margin-bottom: var(--space-md);
}
.about-text p { color: var(--color-muted); margin-bottom: var(--space-sm); }
.about-text .btn { margin-top: var(--space-sm); }
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  text-align: center;
}
.stat { padding: var(--space-md) var(--space-xs); }
.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1;
  margin-bottom: 0.35rem;
}
.stat-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* ── CTA SECTION ─────────────────────────────────────────────── */
.cta-section {
  padding-block: var(--space-xl);
  background: var(--color-dark);
  text-align: center;
}
.cta-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  color: var(--color-ivory);
  margin-bottom: var(--space-sm);
}
.cta-inner p { color: rgba(245,240,232,.7); margin-bottom: var(--space-lg); }

/* ── FOOTER ──────────────────────────────────────────────────── */
.site-footer {
  background: #110b05;
  color: rgba(245,240,232,.7);
  padding-top: var(--space-xl);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.footer-col strong {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-sm);
}
.footer-col address { font-size: 0.88rem; line-height: 1.8; }
.footer-col address a { color: var(--color-gold); transition: color .15s; }
.footer-col address a:hover { color: var(--color-ivory); }
.footer-col ul { display: flex; flex-direction: column; gap: 0.4rem; }
.footer-col ul a {
  font-size: 0.88rem;
  color: rgba(245,240,232,.65);
  transition: color .15s;
}
.footer-col ul a:hover { color: var(--color-gold); }
.footer-legal-text {
  font-size: 0.78rem;
  color: rgba(245,240,232,.4);
  margin-top: var(--space-sm);
  line-height: 1.5;
}
.footer-bottom {
  text-align: center;
  padding: var(--space-sm);
  font-size: 0.78rem;
  color: rgba(245,240,232,.3);
}

/* ── STICKY CTA MOBILE ───────────────────────────────────────── */
.sticky-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 200;
  padding: 0.75rem var(--space-md);
  background: var(--color-green);
  box-shadow: 0 -2px 12px rgba(0,0,0,.25);
}
.sticky-cta-btn {
  display: block;
  text-align: center;
  width: 100%;
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.02em;
  padding: 0.5rem;
}
.sticky-cta-btn:focus-visible { outline: 3px solid var(--color-ivory); outline-offset: 2px; }

/* ── RESPONSIVE — 768px+ ─────────────────────────────────────── */
@media (min-width: 768px) {
  /* Header */
  .nav-toggle { display: none; }
  .main-nav {
    display: block !important;
    position: static;
    background: none;
    padding: 0;
    border: none;
  }
  .main-nav ul { flex-direction: row; gap: 0.25rem; }
  .main-nav a { padding: 0.5rem 0.75rem; font-size: 0.88rem; }
  .header-phone { display: flex; }

  /* Hero */
  .hero { min-height: 88vh; }

  /* Grids */
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: repeat(3, 1fr); }

  /* About */
  .about-inner { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }

  /* Sticky CTA hidden on desktop */
  .sticky-cta { display: none; }
}

@media (min-width: 1024px) {
  .diff-grid { grid-template-columns: repeat(4, 1fr); }
  .services-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── FOCUS VISIBLE GLOBAL ────────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── BODY PADDING for sticky mobile CTA ─────────────────────── */
@media (max-width: 767px) {
  body { padding-bottom: 64px; }
}