/* ==========================================================================
   MARYSOL CAMACHO DUARTE - Minimalist Zen & Relaxing Design System
   Hero: Zen Video Background + Transparent-to-White Header + Clean Single-Line Navigation
   ========================================================================== */

:root {
  --purple-primary: #5B2A86;
  --purple-deep: #2A1043;
  --purple-medium: #461F6A;
  --purple-light: #A89AC9;
  --white: #FFFFFF;
  --off-white: #F8F5FB;
  --gray-text: #383344;
  --gray-muted: #6B6577;
  --gray-soft: #EAE5F2;
  --font-heading: 'Montserrat', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  color: var(--gray-text);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: #f6f3f9;
}
::-webkit-scrollbar-thumb {
  background: var(--purple-light);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--purple-primary);
}

/* ==========================================
   STICKY HEADER TRANSITIONS (Transparent -> Solid White)
   ========================================== */
#main-header {
  transition: background-color 0.35s ease, border-color 0.35s ease, padding 0.35s ease, box-shadow 0.35s ease;
}

/* Transparent Header (At top, over Hero) */
#main-header.header-transparent {
  background-color: transparent;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
#main-header.header-transparent .header-logo-title {
  color: #FFFFFF;
}
#main-header.header-transparent .header-logo-sub {
  color: #D3C7EC;
}
#main-header.header-transparent .nav-link-item {
  color: rgba(255, 255, 255, 0.9);
}
#main-header.header-transparent .nav-link-item:hover {
  color: #FFFFFF;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
}
#main-header.header-transparent .header-cta-btn {
  background-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.6);
}
#main-header.header-transparent .header-cta-btn:hover {
  background-color: #FFFFFF;
  color: #2A1043;
  border-color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}
#main-header.header-transparent #mobile-menu-btn {
  color: #FFFFFF;
}

/* Scrolled Header (Solid White, Dark Text) */
#main-header.header-scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #EAE5F2;
  box-shadow: 0 4px 20px -4px rgba(42, 16, 67, 0.08);
}
#main-header.header-scrolled .header-logo-title {
  color: #2A1043;
}
#main-header.header-scrolled .header-logo-sub {
  color: #5B2A86;
}
#main-header.header-scrolled .nav-link-item {
  color: #383344;
}
#main-header.header-scrolled .nav-link-item:hover {
  color: #5B2A86;
}
#main-header.header-scrolled .header-cta-btn {
  background-color: #5B2A86;
  color: #FFFFFF;
  border: 1px solid transparent;
}
#main-header.header-scrolled .header-cta-btn:hover {
  background-color: #2A1043;
  box-shadow: 0 4px 14px rgba(91, 42, 134, 0.3);
}
#main-header.header-scrolled #mobile-menu-btn {
  color: #2A1043;
}

/* Navigation items guarantee single line */
.nav-link-item {
  white-space: nowrap;
  display: inline-block;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

/* Refined Hero Title */
.hero-title-refined {
  font-family: var(--font-heading);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

/* Falling Leaves Animation Effect */
@keyframes leafFall {
  0% {
    transform: translateY(-10vh) translateX(0) rotate(0deg);
    opacity: 0;
  }
  20% {
    opacity: 0.7;
  }
  80% {
    opacity: 0.7;
  }
  100% {
    transform: translateY(105vh) translateX(60px) rotate(180deg);
    opacity: 0;
  }
}

.leaf-particle {
  position: absolute;
  top: -5%;
  pointer-events: none;
  z-index: 5;
  animation: leafFall 12s linear infinite;
  opacity: 0.6;
}

.leaf-particle:nth-child(1) { left: 10%; animation-duration: 14s; animation-delay: 0s; }
.leaf-particle:nth-child(2) { left: 25%; animation-duration: 10s; animation-delay: 3s; }
.leaf-particle:nth-child(3) { left: 45%; animation-duration: 16s; animation-delay: 1s; }
.leaf-particle:nth-child(4) { left: 70%; animation-duration: 12s; animation-delay: 5s; }
.leaf-particle:nth-child(5) { left: 85%; animation-duration: 15s; animation-delay: 2s; }

/* Card Hover Micro-interactions */
.elma-card {
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.elma-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -12px rgba(42, 16, 67, 0.1);
}

.elma-card-img {
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.elma-card:hover .elma-card-img {
  transform: scale(1.05);
}

/* Scroll Reveal */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}