/* ===== BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  overflow-x: hidden;
}

::selection {
  background: #7B2D3B;
  color: #FDF8F6;
}

/* ===== NAVBAR ===== */
#navbar {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
  background: rgba(253, 248, 246, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 20px rgba(123, 45, 59, 0.08);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #7B2D3B;
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* ===== HERO ===== */
#inicio {
  position: relative;
}

/* ===== SERVICE CARDS ===== */
.service-card {
  position: relative;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(123, 45, 59, 0.1), transparent, rgba(123, 45, 59, 0.05));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.service-card:hover::before {
  opacity: 1;
}

/* ===== PROJECT CARDS ===== */
.project-card {
  position: relative;
}

/* ===== SCROLL ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  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; }

/* ===== FLOATING CARDS ANIMATION ===== */
@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(var(--rotate, 0deg)); }
  50% { transform: translateY(-12px) rotate(var(--rotate, 0deg)); }
}

.floating-card-1 { animation: float 6s ease-in-out infinite; --rotate: 2deg; }
.floating-card-2 { animation: float 5s ease-in-out infinite 0.5s; --rotate: -3deg; }
.floating-card-3 { animation: float 7s ease-in-out infinite 1s; --rotate: 2deg; }
.floating-card-4 { animation: float 5.5s ease-in-out infinite 0.3s; --rotate: -1deg; }

/* ===== BACK TO TOP ===== */
#backToTop {
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

#backToTop.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

#backToTop:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(123, 45, 59, 0.4);
}

/* ===== MOBILE MENU ===== */
.mobile-link {
  border-radius: 12px;
}

/* ===== FORM ===== */
input:focus,
select:focus,
textarea:focus {
  outline: none;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  appearance: none;
  -webkit-appearance: none;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 767px) {
  .font-serif.font-900 {
    font-size: 2.5rem !important;
  }

  section {
    padding-left: 1.25rem !important;
    padding-right: 1.25rem !important;
  }
}

@media (min-width: 768px) {
  section {
    padding-left: 2rem !important;
    padding-right: 2rem !important;
  }
}

@media (min-width: 1024px) {
  section {
    padding-left: 2rem !important;
    padding-right: 2rem !important;
  }
}