/* ========================================
   Dr. Pedro Miguel - Nutricionista
   Custom Styles
   ======================================== */

/* Base styles */
html {
  scroll-behavior: smooth;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection color */
::selection {
  background-color: #767e59;
  color: white;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #a0a294;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #767e59;
}

/* Header scroll effect */
#header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Focus states for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid #767e59;
  outline-offset: 2px;
}

/* Form input placeholder */
input::placeholder,
textarea::placeholder {
  color: #9ca3af;
}

/* Phone input formatting */
#phone {
  font-variant-numeric: tabular-nums;
}

/* Animation utilities */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in {
  animation: fadeIn 0.4s ease-out forwards;
}

/* Staggered animation delays */
.animate-delay-100 { animation-delay: 100ms; }
.animate-delay-200 { animation-delay: 200ms; }
.animate-delay-300 { animation-delay: 300ms; }
.animate-delay-400 { animation-delay: 400ms; }
.animate-delay-500 { animation-delay: 500ms; }

/* Intersection Observer animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile menu animation */
#mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

#mobile-menu.active {
  max-height: 500px;
}

/* WhatsApp button pulse effect */
.whatsapp-pulse {
  animation: pulse 2s infinite;
}

/* Card hover effects */
.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Image lazy loading placeholder */
img[data-src] {
  opacity: 0;
  transition: opacity 0.3s ease;
}

img[data-src].loaded {
  opacity: 1;
}

/* Form validation styles */
input:invalid:not(:placeholder-shown),
textarea:invalid:not(:placeholder-shown) {
  border-color: #ef4444;
}

input:valid:not(:placeholder-shown),
textarea:valid:not(:placeholder-shown) {
  border-color: #22c55e;
}

/* Button loading state */
button.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

button.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid white;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Success message */
.success-message {
  background: #22c55e;
  color: white;
  padding: 1rem;
  border-radius: 0.75rem;
  text-align: center;
  animation: fadeIn 0.4s ease;
}

/* Error message */
.error-message {
  background: #ef4444;
  color: white;
  padding: 1rem;
  border-radius: 0.75rem;
  text-align: center;
  animation: fadeIn 0.4s ease;
}

/* Responsive typography adjustments */
@media (max-width: 640px) {
  html {
    font-size: 14px;
  }
}

/* Print styles */
@media print {
  header,
  footer,
  .whatsapp-float,
  #mobile-menu-btn {
    display: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 10pt;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary: #4a5233;
    --secondary: #1a3d00;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}