/* =========================================
   MARC PEINTURE — Design System
   Palette : artisan chaleureux / flat design
   Typo : Amatic SC (titres) + Cabin (corps)
   ========================================= */

/* --- Variables --- */
:root {
  /* Couleurs */
  --color-primary:        #EA580C;
  --color-on-primary:     #FFFFFF;
  --color-secondary:      #F97316;
  --color-accent:         #2563EB;
  --color-on-accent:      #FFFFFF;
  --color-background:     #FFF7ED;
  --color-foreground:     #0F172A;
  --color-card:           #FFFFFF;
  --color-card-fg:        #0F172A;
  --color-muted:          #FDF4F0;
  --color-muted-fg:       #64748B;
  --color-border:         #FCEAE1;
  --color-destructive:    #DC2626;
  --color-ring:           #EA580C;
  --color-dark-bg:        #0F172A;
  --color-dark-surface:   #1E293B;

  /* Typographie */
  --font-heading: 'Amatic SC', 'Georgia', cursive;
  --font-body:    'Cabin', 'Helvetica Neue', sans-serif;

  /* Espacements */
  --space-1:  4px;
  --space-2:  8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  /* Rayons */
  --radius-sm:  4px;
  --radius:     8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Ombres (flat = légères) */
  --shadow-sm: 0 1px 4px rgba(15,23,42,0.06);
  --shadow:    0 2px 12px rgba(15,23,42,0.08);
  --shadow-lg: 0 4px 32px rgba(15,23,42,0.12);

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration: 200ms;
  --duration-slow: 300ms;

  --max-width: 1200px;
  --section-py: 80px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background-color: var(--color-background);
  color: var(--color-foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Typographie --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
}
h1 { font-size: clamp(2.8rem, 7vw, 5rem); }
h2 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h3 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
p  { color: var(--color-muted-fg); line-height: 1.75; }

/* --- Utilitaires layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.section { padding: var(--section-py) 0; }
.section--muted  { background-color: var(--color-muted); }
.section--dark   { background-color: var(--color-dark-bg); }
.section--dark h2,
.section--dark h3 { color: #FFFFFF; }
.section--dark p  { color: rgba(255,255,255,0.6); }

.section-header { text-align: center; margin-bottom: var(--space-16); }
.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  background-color: rgba(234, 88, 12, 0.1);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}
.section-header h2  { margin-bottom: var(--space-4); }
.section-header > p { max-width: 520px; margin: 0 auto; }

/* --- Boutons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 13px 26px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color var(--duration) var(--ease),
              color var(--duration) var(--ease),
              border-color var(--duration) var(--ease),
              transform var(--duration-fast) var(--ease);
  white-space: nowrap;
}
.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}
.btn-primary:hover { background-color: #C2410C; }

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-on-accent);
}
.btn-accent:hover { background-color: #1D4ED8; }

.btn-outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

.btn-ghost-white {
  background-color: transparent;
  border-color: rgba(255,255,255,0.5);
  color: #FFFFFF;
}
.btn-ghost-white:hover {
  background-color: rgba(255,255,255,0.12);
  border-color: #FFFFFF;
}

.btn-white {
  background-color: #FFFFFF;
  color: var(--color-primary);
}
.btn-white:hover { background-color: var(--color-muted); }

/* --- Icônes SVG (Lucide inline) --- */
.icon { width: 20px; height: 20px; stroke: currentColor; stroke-width: 2; fill: none; flex-shrink: 0; }
.icon-lg { width: 28px; height: 28px; }
.icon-sm { width: 16px; height: 16px; }

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background-color var(--duration-slow) var(--ease),
              box-shadow var(--duration-slow) var(--ease);
}
.site-header.scrolled {
  background-color: rgba(255, 247, 237, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: #FFFFFF;
  transition: color var(--duration) var(--ease);
  letter-spacing: 0.03em;
}
.site-header.scrolled .nav-logo { color: var(--color-foreground); }
.nav-logo span { color: var(--color-primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  transition: color var(--duration) var(--ease);
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration) var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.site-header.scrolled .nav-links a { color: var(--color-muted-fg); }
.site-header.scrolled .nav-links a:hover { color: var(--color-primary); }

.nav-cta { display: flex; align-items: center; gap: var(--space-3); }
.nav-cta-devis { display: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--space-1);
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background-color: #FFFFFF;
  transition: var(--duration) var(--ease);
  border-radius: 2px;
}
.site-header.scrolled .nav-toggle span { background-color: var(--color-foreground); }

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed; inset: 0;
  background-color: var(--color-dark-bg);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  color: #FFFFFF;
  transition: color var(--duration) var(--ease);
}
.mobile-nav a:hover { color: var(--color-primary); }
.mobile-nav-close {
  position: absolute; top: 20px; right: 24px;
  background: none; border: none;
  color: #FFFFFF; font-size: 2rem; cursor: pointer;
  line-height: 1; padding: var(--space-2);
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-dark-bg);
  padding: var(--space-16) 0 var(--space-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}
.footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.45); line-height: 1.75; margin: var(--space-4) 0 var(--space-6); }
.footer-social { display: flex; gap: var(--space-3); }
.footer-social a {
  width: 38px; height: 38px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.5);
  transition: var(--duration) var(--ease);
}
.footer-social a:hover { background-color: var(--color-primary); border-color: var(--color-primary); color: #FFFFFF; }
.footer-social svg { width: 16px; height: 16px; fill: currentColor; }

.footer-col h4 { font-family: var(--font-body); font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255,255,255,0.5); margin-bottom: var(--space-4); }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { font-size: 0.9rem; color: rgba(255,255,255,0.55); transition: color var(--duration) var(--ease); }
.footer-col ul a:hover { color: var(--color-primary); }

.footer-contact-item { display: flex; gap: var(--space-3); margin-bottom: var(--space-3); font-size: 0.88rem; color: rgba(255,255,255,0.5); align-items: flex-start; }
.footer-contact-item svg { width: 16px; height: 16px; stroke: var(--color-primary); flex-shrink: 0; margin-top: 2px; fill: none; stroke-width: 2; }
.footer-contact-item a { color: rgba(255,255,255,0.5); transition: color var(--duration) var(--ease); }
.footer-contact-item a:hover { color: var(--color-primary); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: var(--space-8);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.82rem; color: rgba(255,255,255,0.3);
}

/* --- WhatsApp flottant --- */
.whatsapp-fab {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 56px; height: 56px;
  border-radius: var(--radius-full);
  background-color: #25D366;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  z-index: 900;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
  cursor: pointer;
}
.whatsapp-fab:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(37,211,102,0.5); }
.whatsapp-fab svg { width: 30px; height: 30px; fill: #FFFFFF; }

/* --- CTA Banner --- */
.cta-banner { background-color: var(--color-primary); padding: var(--space-16) 0; text-align: center; }
.cta-banner h2 { color: #FFFFFF; margin-bottom: var(--space-3); }
.cta-banner p { color: rgba(255,255,255,0.8); margin-bottom: var(--space-8); font-size: 1.05rem; }
.btn-group { display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap; }

/* --- Scroll reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* --- Étoiles --- */
.stars { display: flex; gap: 2px; color: #F59E0B; font-size: 1rem; }

/* --- Page hero (pages intérieures) --- */
.page-hero {
  background-color: var(--color-dark-bg);
  padding: 140px 0 72px;
  text-align: center;
}
.page-hero h1 { color: #FFFFFF; margin-bottom: var(--space-4); }
.page-hero p { color: rgba(255,255,255,0.55); font-size: 1.05rem; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}
@media (max-width: 768px) {
  :root { --section-py: 56px; }
  .nav-links, .nav-cta-devis { display: none !important; }
  .nav-toggle { display: flex; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; gap: var(--space-3); text-align: center; }
}
@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
}