/* ============================================
   NAV SHARED — CSS de la nav principale Pulse
   Inclus dans toutes les pages pour navigation cohérente
   ============================================ */

/* Fallback CSS variables (au cas où la page hôte ne les définit pas) */
:root {
  --nav-bg: rgba(6,6,10,0.7);
  --nav-bg-scrolled: rgba(12,12,20,0.92);
  --logo-gradient: linear-gradient(135deg, #6c5ce7, #a855f7, #e84393);
}
[data-theme="light"] {
  --nav-bg: rgba(255,255,255,0.75);
  --nav-bg-scrolled: rgba(255,255,255,0.95);
}

/* Animations du logo */
@keyframes nav-heartbeat {
  0%   { transform: scale(1); }
  7%   { transform: scale(1.15); }
  14%  { transform: scale(1); }
  21%  { transform: scale(1.1); }
  28%  { transform: scale(1); }
  100% { transform: scale(1); }
}
@keyframes nav-glowPulse {
  0%   { opacity: 0.2; transform: scale(1); }
  7%   { opacity: 0.5; transform: scale(1.4); }
  14%  { opacity: 0.2; transform: scale(1); }
  21%  { opacity: 0.4; transform: scale(1.25); }
  28%  { opacity: 0.2; transform: scale(1); }
  100% { opacity: 0.2; transform: scale(1); }
}
@keyframes nav-ecgDraw {
  0%   { stroke-dashoffset: 50; opacity: 0.4; }
  15%  { stroke-dashoffset: 0; opacity: 1; }
  50%  { stroke-dashoffset: 0; opacity: 1; }
  65%  { stroke-dashoffset: 0; opacity: 0.6; }
  100% { stroke-dashoffset: 0; opacity: 0.6; }
}

/* Nav container */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition, all 0.3s cubic-bezier(0.4, 0, 0.2, 1));
}

.nav.scrolled {
  background: var(--nav-bg-scrolled);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 38px; height: 38px;
  border-radius: 12px;
  background: var(--logo-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: visible;
  box-shadow: 0 0 20px rgba(232,67,147,0.25), 0 0 40px rgba(108,92,231,0.15);
}

.nav-logo-icon svg {
  width: 22px; height: 22px;
  overflow: visible;
}

.nav .nav-logo-icon .heart-main {
  transform-origin: 12px 12px;
  animation: nav-heartbeat 2.4s ease-in-out infinite;
}

.nav .nav-logo-icon .pulse-glow {
  transform-origin: 12px 12px;
  animation: nav-glowPulse 2.4s ease-in-out infinite;
}

.nav .nav-logo-icon .ecg-line {
  stroke-dasharray: 50;
  stroke-dashoffset: 0;
  animation: nav-ecgDraw 2.4s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .nav-logo-icon .heart-main,
  .nav-logo-icon .pulse-glow,
  .nav-logo-icon .ecg-line {
    animation: none !important;
  }
  .nav-logo-icon .ecg-line {
    stroke-dashoffset: 0 !important;
  }
}

.nav-logo-text {
  font-family: var(--font-display, 'Space Grotesk', sans-serif);
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--gradient-primary, linear-gradient(135deg, #6c5ce7, #a29bfe, #00cec9));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links > li {
  position: relative;
}

.nav-links > li > a,
.nav-links > li > button {
  color: var(--text-secondary, rgba(240,240,245,0.6));
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition, all 0.3s ease);
  position: relative;
  padding: 8px 14px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body, 'Inter', sans-serif);
}

.nav-links > li > a:hover,
.nav-links > li > button:hover,
.nav-links > li.open > button {
  color: var(--text-primary, #f0f0f5);
  background: var(--glass, rgba(255,255,255,0.04));
}

.nav-links .nav-chevron {
  width: 12px;
  height: 12px;
  transition: transform 0.2s ease;
  opacity: 0.5;
}

.nav-links > li.open .nav-chevron {
  transform: rotate(180deg);
}

/* Mega menu dropdowns */
.nav-dropdown {
  position: absolute;
  top: 100%;
  padding-top: 12px; /* Bridge invisible hoverable */
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 2000;
}

.nav-links > li.open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-inner {
  background: var(--nav-bg-scrolled);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border, rgba(255,255,255,0.08));
  border-radius: 16px;
  padding: 24px;
  min-width: 520px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 0 1px var(--glass-border, rgba(255,255,255,0.08));
}

[data-theme="light"] .nav-dropdown-inner {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 20px 60px rgba(0,0,0,0.08), 0 0 0 1px var(--glass-border, rgba(0,0,0,0.08));
}

.nav-dropdown-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.nav-dropdown-grid.single-col {
  grid-template-columns: 1fr;
}

.nav-dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.2s ease;
}

.nav-dropdown-item:hover {
  background: var(--glass, rgba(255,255,255,0.04));
}

[data-theme="light"] .nav-dropdown-item:hover {
  background: rgba(0,0,0,0.04);
}

.nav-dropdown-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  background: var(--glass, rgba(255,255,255,0.04));
  border: 1px solid var(--glass-border, rgba(255,255,255,0.08));
}

.nav-dropdown-text h4 {
  font-family: var(--font-display, 'Space Grotesk', sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary, #f0f0f5);
  margin: 0 0 2px;
  letter-spacing: -0.2px;
}

.nav-dropdown-text p {
  font-size: 0.75rem;
  color: var(--text-tertiary, rgba(240,240,245,0.35));
  line-height: 1.4;
  margin: 0;
}

.nav-dropdown-section-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-tertiary, rgba(240,240,245,0.35));
  padding: 4px 14px 8px;
}

/* === Mega menu 4 colonnes (Produit) === */
.nav-dropdown-categories {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.nav-dropdown-category {
  display: flex;
  flex-direction: column;
}

.nav-dropdown-category .nav-dropdown-section-title {
  padding: 0 10px 10px;
  border-bottom: 1px solid var(--glass-border, rgba(255,255,255,0.08));
  margin-bottom: 6px;
  color: var(--accent-2, #a29bfe);
}

.nav-dropdown-link {
  display: block;
  padding: 7px 10px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary, rgba(240,240,245,0.7));
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
  font-family: var(--font-body, 'Inter', sans-serif);
  line-height: 1.3;
}

.nav-dropdown-link:hover {
  background: var(--glass, rgba(255,255,255,0.04));
  color: var(--text-primary, #f0f0f5);
}

[data-theme="light"] .nav-dropdown-link:hover {
  background: rgba(0,0,0,0.04);
}

@media (max-width: 1200px) {
  .nav-dropdown-categories {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

.nav-dropdown-divider {
  height: 1px;
  background: var(--glass-border, rgba(255,255,255,0.08));
  margin: 8px 0;
}

.nav-dropdown-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px 0;
  margin-top: 8px;
  border-top: 1px solid var(--glass-border, rgba(255,255,255,0.08));
}

.nav-dropdown-footer a {
  font-size: 0.78rem;
  color: var(--accent-2, #a29bfe);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s;
}

.nav-dropdown-footer a:hover {
  color: var(--accent-1, #6c5ce7);
}

/* Nav actions (CTA button container) */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-cta {
  padding: 9px 22px;
  background: var(--gradient-primary, linear-gradient(135deg, #6c5ce7, #a29bfe, #00cec9));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: var(--transition, all 0.3s ease);
  box-shadow: 0 4px 16px rgba(108,92,231,0.3);
  font-family: var(--font-body, 'Inter', sans-serif);
  white-space: nowrap;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(108,92,231,0.4);
}

/* Mobile toggle */
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-primary, #f0f0f5);
}

/* Responsive */
@media (max-width: 1080px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: inline-flex; }
}

@media (max-width: 768px) {
  .nav { padding: 0 20px; }
}