/* ========== BASE ========== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; }

/* ========== NAV SCROLL STATE ========== */
#nav.scrolled {
  background: rgba(255, 251, 245, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(185, 28, 28, 0.08);
}

.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #B91C1C;
  border-radius: 1px;
  transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

/* ========== MOBILE MENU ========== */
#mobile-menu {
  animation: slideDown 0.3s ease;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
.mobile-link {
  display: block;
}

/* ========== HERO STAT CARDS ========== */
.stat-card {
  animation: floatCard 4s ease-in-out infinite;
}
.stat-card:nth-child(2) {
  animation-delay: 1.3s;
  animation-duration: 4.5s;
}
.stat-card:nth-child(3) {
  animation-delay: 2.6s;
  animation-duration: 3.8s;
}
@keyframes floatCard {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

/* ========== PRODUCT CARDS ========== */
.product-card {
  will-change: transform;
}

/* ========== FEATURE CARDS ========== */
.feature-card {
  will-change: transform;
}

/* ========== GALLERY ========== */
.gallery-item {
  cursor: pointer;
}

/* ========== SCROLL REVEAL (progressive enhancement) ========== */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(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; }
  .reveal-delay-6 { transition-delay: 0.6s; }
}

/* ========== SPARKLE ANIMATION ========== */
@keyframes sparkle {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.3); }
}

/* ========== BACK TO TOP ========== */
#back-to-top {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
#back-to-top.visible {
  opacity: 1;
  pointer-events: all;
}
#back-to-top:hover {
  transform: translateY(-3px);
}

/* ========== FORM ========== */
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #fecaca;
  border-radius: 0.75rem;
  font-family: 'Nunito', sans-serif;
  font-size: 1rem;
  color: #450a0a;
  background: #fff5f5;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #B91C1C;
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.1);
}
.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}
.contact-form button[type="submit"] {
  background: #B91C1C;
  color: white;
  font-weight: 700;
  padding: 0.75rem 2rem;
  border: none;
  border-radius: 9999px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.contact-form button[type="submit"]:hover {
  background: #7f1d1d;
  transform: scale(1.05);
}
.form-success {
  display: none;
  background: #dcfce7;
  border: 2px solid #86efac;
  color: #14532d;
  padding: 1rem 1.5rem;
  border-radius: 1rem;
  font-weight: 600;
  margin-top: 1rem;
}
.form-success.show {
  display: block;
  animation: fadeIn 0.4s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}