/* ================================================
   Piscines & Aménagement Bordeaux Médoc
   Charte graphique : Blanc + Bleu logo (#1E4F8C)
   ================================================ */

:root {
  --blue:        #1E4F8C;   /* bleu principal = logo */
  --blue-dark:   #0D2444;   /* bleu foncé — hero, footer */
  --blue-mid:    #2B63AD;   /* variante légèrement plus claire */
  --blue-light:  #4A85CB;   /* survol, accents doux */
  --blue-pale:   #E0EAFA;   /* fonds très clairs */
  --blue-xpale:  #F4F8FF;   /* sections alternées */
  --white:       #FFFFFF;
  --text-dark:   #0D2444;   /* titres, texte fort */
  --text-mid:    #3A5580;   /* texte secondaire */
  --wa-green:    #25D366;   /* WhatsApp */
}

/* ---- Base ---- */
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

#devis-form {
  scroll-margin-top: 100px;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-dark);
  overflow-x: hidden;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--blue-dark); }
::-webkit-scrollbar-thumb { background: var(--blue); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--blue-light); }

/* ---- Selection ---- */
::selection { background: var(--blue); color: white; }

/* ---- Navbar ---- */
#navbar {
  transition: all 0.4s ease;
}
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.97) !important;
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(30, 79, 140, 0.12);
}
/* links become blue when nav turns white */
#navbar.scrolled .nav-link        { color: var(--text-dark) !important; }
#navbar.scrolled .nav-link:hover  { color: var(--blue) !important; }
#navbar.scrolled #menu-btn        { color: var(--text-dark); }

/* Brand name switches white → dark on scroll */
.navbar-brand-name {
  color: white;
  transition: color 0.4s ease;
}
.navbar-brand-sub {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.4s ease;
}
#navbar.scrolled .navbar-brand-name { color: var(--text-dark) !important; }
#navbar.scrolled .navbar-brand-sub  { color: var(--blue) !important; }

/* Logo glow on dark/transparent navbar */
.logo-navbar {
  filter: drop-shadow(0 0 12px rgba(255,255,255,1)) drop-shadow(0 0 28px rgba(255,255,255,0.65)) drop-shadow(0 0 50px rgba(255,255,255,0.28));
  transition: filter 0.4s ease;
}
#navbar.scrolled .logo-navbar {
  filter: none;
}

.nav-link {
  position: relative;
  transition: color 0.3s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* ---- Hero ---- */
.hero-section {
  background: linear-gradient(135deg, #0A1E40 0%, #0D2444 40%, #1E4F8C 80%, #2B63AD 100%);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(74, 133, 203, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 30%, rgba(255, 255, 255, 0.04) 0%, transparent 60%);
  pointer-events: none;
}

/* Ripple rings */
.ripple {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.1);
  animation: rippleExpand 6s ease-out infinite;
}
.ripple:nth-child(1) { width: 200px; height: 200px; animation-delay: 0s; }
.ripple:nth-child(2) { width: 400px; height: 400px; animation-delay: 2s; }
.ripple:nth-child(3) { width: 600px; height: 600px; animation-delay: 4s; }

@keyframes rippleExpand {
  0%   { transform: scale(0.8); opacity: 0.5; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* Particles */
.particle {
  position: absolute;
  width: 4px; height: 4px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  animation: particleFloat linear infinite;
}
@keyframes particleFloat {
  0%   { transform: translateY(0) translateX(0); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(-100vh) translateX(50px); opacity: 0; }
}

/* ---- Text gradient blue ---- */
.text-gradient-blue {
  background: linear-gradient(135deg, #ffffff 0%, #b8d4f8 50%, #ffffff 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmerText 4s linear infinite;
}
@keyframes shimmerText {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ---- Hero badge ---- */
.hero-badge {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border-radius: 100px;
  padding: 6px 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.85rem;
  font-weight: 500;
}

/* ---- Buttons ---- */
.btn-gold {   /* conservé pour compatibilité HTML — style bleu */
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-mid) 100%);
  color: #ffffff;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.btn-gold::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--blue-mid) 0%, var(--blue-light) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}
.btn-gold:hover::before { opacity: 1; }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(30,79,140,0.4); }

.btn-outline-gold {   /* conservé — style outline bleu */
  border: 2px solid var(--blue);
  color: var(--blue);
  background: transparent;
  font-weight: 500;
  transition: all 0.3s ease;
}
.btn-outline-gold:hover {
  background: var(--blue);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(30,79,140,0.3);
}

/* ---- Bouton "Voir tous nos modèles" ---- */
.btn-voir-modeles {
  border: 2px solid var(--blue);
  color: var(--blue);
  background: transparent;
  font-weight: 600;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
  animation: modeles-border-pulse 3.5s ease-in-out infinite;
}

/* Shimmer périodique */
.btn-voir-modeles::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 35%, rgba(30,79,140,0.12) 50%, transparent 65%);
  transform: translateX(-100%);
  animation: modeles-shimmer 4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes modeles-shimmer {
  0%, 60%  { transform: translateX(-120%); }
  80%      { transform: translateX(120%); }
  100%     { transform: translateX(120%); }
}

@keyframes modeles-border-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(30,79,140,0); }
  50%      { box-shadow: 0 0 0 7px rgba(30,79,140,0.10); }
}

.btn-voir-modeles:hover {
  background: var(--blue);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(30,79,140,0.35);
  animation: none;
}

/* Flèche glisse au hover */
.btn-voir-modeles .btn-arrow {
  transition: transform 0.3s ease;
}
.btn-voir-modeles:hover .btn-arrow {
  transform: translateX(6px);
}

/* WhatsApp button */
.btn-whatsapp {
  background: var(--wa-green);
  color: white;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-whatsapp:hover {
  background: #1daa53;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37,211,102,0.35);
}

/* Floating WhatsApp bubble */
.wa-bubble {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 200;
  width: 58px;
  height: 58px;
  background: var(--wa-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(37,211,102,0.45);
  transition: all 0.3s ease;
  cursor: pointer;
}
.wa-bubble:hover {
  background: #1daa53;
  transform: scale(1.1);
  box-shadow: 0 10px 30px rgba(37,211,102,0.5);
}
.wa-bubble .wa-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 3px solid rgba(37,211,102,0.35);
  animation: waPulse 2s ease-out infinite;
}
@keyframes waPulse {
  0%   { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.4); opacity: 0; }
}

/* ---- Wave divider ---- */
.wave-divider {
  position: absolute;
  bottom: -1px;
  left: 0; right: 0;
  overflow: hidden;
  line-height: 0;
}
.wave-divider svg { display: block; width: 100%; }

/* ---- Stat counters ---- */
.stat-number {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--blue);
  line-height: 1;
}

/* ---- Service cards ---- */
.service-card {
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue-light) 100%);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover { transform: translateY(-6px); box-shadow: 0 20px 50px rgba(30,79,140,0.12); }

/* ---- Pool cards ---- */
.card-pool {
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  overflow: hidden;
}
.card-pool:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(30,79,140,0.18);
}
.card-pool .card-img-overlay {
  transition: all 0.4s ease;
  opacity: 0;
}
.card-pool:hover .card-img-overlay { opacity: 1; }
.card-pool .card-image {
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.card-pool:hover .card-image { transform: scale(1.05); }

/* ---- Pool gradient cards ---- */
.pool-gradient-1 { background: linear-gradient(135deg, #0a4d6e 0%, #1a7fa0 50%, #4fb3d4 100%); }
.pool-gradient-2 { background: linear-gradient(135deg, #0d2b6b 0%, #1a52b0 50%, #5d8ee8 100%); }
.pool-gradient-3 { background: linear-gradient(135deg, #0D2444 0%, #1E4F8C 50%, #2B63AD 100%); }
.pool-gradient-4 { background: linear-gradient(135deg, #0a4a3a 0%, #1a7a5a 50%, #4fb380 100%); }
.pool-gradient-5 { background: linear-gradient(135deg, #1a3a5c 0%, #2d6a9e 50%, #5ba3d0 100%); }
.pool-gradient-6 { background: linear-gradient(135deg, #1a0a2a 0%, #2a1f60 50%, #4a4a9a 100%); }


/* ---- Process steps ---- */
.step-number {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-mid) 100%);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem; font-weight: 700;
  color: white;
  flex-shrink: 0;
  position: relative; z-index: 1;
}

/* ---- Testimonials ---- */
.testimonial-card {
  background: white;
  border-left: 4px solid var(--blue);
  transition: all 0.3s ease;
}
.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(30,79,140,0.1);
}
.stars { color: #f59e0b; } /* étoiles en jaune/or — convention UX universelle */

/* ---- Form fields ---- */
.form-input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #d1d5db;
  border-radius: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  background: white;
  color: var(--text-dark);
  outline: none;
}
.form-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(30,79,140,0.1);
}
.form-input::placeholder { color: #9ca3af; }

.form-label {
  display: block;
  font-weight: 500;
  font-size: 0.875rem;
  color: #4b5563;
  margin-bottom: 6px;
}

/* Character counter */
.char-counter {
  font-size: 0.75rem;
  color: #9ca3af;
  text-align: right;
  margin-top: 4px;
  transition: color 0.3s ease;
}
.char-counter.warning { color: #f59e0b; }
.char-counter.danger  { color: #ef4444; }

/* ---- Gold separator (rebrandé bleu) ---- */
.gold-line {
  display: inline-block;
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue-light) 100%);
  border-radius: 2px;
}

/* ---- Price badge ---- */
.price-badge {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-mid) 100%);
  color: white;
  font-weight: 700;
  border-radius: 100px;
  padding: 4px 14px;
  font-size: 0.85rem;
  display: inline-block;
}

/* ---- Section patterns ---- */
.bg-pool-pattern {
  background-color: var(--blue-xpale);
  background-image: radial-gradient(circle at 20px 20px, rgba(30,79,140,0.05) 1px, transparent 0);
  background-size: 40px 40px;
}

.bg-navy-pattern {
  background: linear-gradient(135deg, #0A1E40 0%, #0D2444 60%, #1E4F8C 100%);
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.05) 1px, transparent 0);
  background-size: 30px 30px;
}

/* ---- Scroll reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  max-width: 100%;
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  max-width: 100%;
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ---- Mobile menu ---- */
#mobile-menu {
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  max-height: 0;
  overflow: hidden;
}
#mobile-menu.open { max-height: 600px; }

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: 6rem; /* au-dessus de la bulle WhatsApp */
  right: 2rem;
  background: var(--blue-dark);
  border-left: 4px solid var(--blue);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  transform: translateX(150%);
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: 9999;
  max-width: 340px;
  font-size: 0.9rem;
}
.toast.show { transform: translateX(0); }

/* ---- Footer links ---- */
.footer-link {
  color: #94a3b8;
  transition: color 0.3s ease;
  font-size: 0.9rem;
}
.footer-link:hover { color: var(--blue-light); }

/* ---- Modal ---- */
#pool-modal { transition: opacity 0.3s ease; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .step-connector { display: none; }
  .hero-section { min-height: 80svh; }
  .wa-bubble { bottom: 1.25rem; right: 1.25rem; width: 52px; height: 52px; }
}

/* ---- About image placeholder ---- */
.about-img-placeholder {
  background: linear-gradient(135deg, #0a4d6e 0%, #1E4F8C 50%, #2B63AD 100%);
}