/* =========================================
   LAYOUT - HEADER, SECTIONS, FOOTER
   ========================================= */

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  z-index: 1000;
  transition: var(--transition);
  background: transparent;
}

header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(10px);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  z-index: 1001;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -1px;
}

.company-name {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  opacity: 0.9;
}

/* Logo Images */
.logo-container img {
  height: 8em;
  width: auto;
  margin-top: 1rem;
  transition: opacity 0.3s ease;
}

#logo-white {
  opacity: 1;
}

#logo-blue {
  position: absolute;
  left: 0;
  opacity: 0;
}

header.scrolled .logo {
  color: var(--ulp-blue);
}

header.scrolled .company-name {
  color: var(--ulp-blue);
}

/* Navigation */
nav ul {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 2.5rem;
}

nav a {
  text-decoration: none;
  color: var(--white);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
}

nav a:hover {
  color: var(--ulp-grey);
}

header.scrolled nav a {
  color: var(--black);
}

header.scrolled nav a:hover {
  color: var(--ulp-blue);
}

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--white);
  cursor: pointer;
  z-index: 1001;
}

header.scrolled .mobile-toggle {
  color: var(--ulp-blue);
}

/* Hero Section */
@keyframes techFlow {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  /* Behind content (z-index: 2) but above bg layers */
  pointer-events: auto;
  /* Enable mouse interaction */
}

#hero {
  min-height: 100vh;
  /* Tech-inspired Gradient Mesh */
  background: linear-gradient(-45deg, #050a30, #000000, #0e1b9b, #0e4d92);
  background-size: 400% 400%;
  animation: techFlow 15s ease infinite;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding-top: var(--header-height);
  overflow: hidden;
}

/* Tech Grid Overlay */
#hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 0;
  pointer-events: none;
}

/* Innovation Glow */
#hero::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: radial-gradient(circle, rgba(14, 77, 146, 0.2) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  max-width: 900px;
  padding: 2rem;
  position: relative;
  z-index: 2;
}

.hero-question {
  font-size: 1.15rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 2rem;
  line-height: 1.5;
  font-style: italic;
}

.hero-sub {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--white);
  opacity: 1;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-tagline {
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

/* Servicios Section */
/* Servicios Section background removed as per request */
/* #servicios {
  background: transparent;
  position: relative;
} */

/* Diferenciadores Section */
#diferenciadores {
  background: var(--ulp-blue);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

#diferenciadores::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 80%;
  height: 200%;
  background: rgba(255, 255, 255, 0.03);
  transform: rotate(30deg);
  pointer-events: none;
}

#diferenciadores h2 {
  color: var(--white);
}

/* Contacto Section */
#contacto {
  background: linear-gradient(135deg, rgba(5, 12, 34, 0.85), rgba(14, 27, 155, 0.80)), url('../images/dr_digital_map_night.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--white);
  padding-bottom: 2rem;
  position: relative;
}

#contacto h2 {
  color: var(--white);
}

#contacto p {
  color: var(--ulp-grey);
}

/* Footer */
footer {
  margin-top: 4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  font-size: 0.8rem;
  opacity: 0.5;
  text-align: center;
}