@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --color-primary: #0E7490;
  --color-primary-dark: #155E75;
  --color-primary-light: #E0F2FE;
  --color-secondary: #0284C7;
  --color-dark: #080C14;
  --color-dark-card: #111827;
  --color-muted: #64748B;
  --color-bg-light: #F9FAFB;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  font-family: var(--font-body);
  color: #1F2937;
  background-color: var(--color-bg-light);
  overflow-x: hidden;
  font-size: 16px;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
}

/* Smooth Transitions */
* {
  transition-property: background-color, border-color, color, fill, stroke, opacity, box-shadow, transform;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 200ms;
}

/* Flip Box (How it works - Blueprint Section 8) */
.flip-card {
  background-color: transparent;
  perspective: 1000px;
  height: 280px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: left;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: 1rem;
  padding: 1.75rem;
}

.flip-card-front {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
}

.flip-card-back {
  background: linear-gradient(135deg, #0E7490 0%, #0284C7 100%);
  color: white;
  transform: rotateY(180deg);
  box-shadow: 0 10px 25px -5px rgba(14, 116, 144, 0.3);
}

/* Pulse animation for CTA buttons */
@keyframes pulse-subtle {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(14, 116, 144, 0.4);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(14, 116, 144, 0);
  }
}

.btn-whatsapp-pulse {
  animation: pulse-subtle 3s infinite;
}

/* Glassmorphism Elements */
.glass-panel {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.glass-dark {
  background: rgba(8, 12, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #F1F5F9;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: #0E7490;
}

/* Table of contents in blog posts */
.toc-link.active {
  color: #0E7490;
  font-weight: 600;
  border-left-color: #0E7490;
}