@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap");

/* ----------------------------- */
/* Root Variables */
/* ----------------------------- */

:root {
  /* Base colors */
  --bg-deep: #05070a;
  --bg-mid: #0b1017;
  --bg-surface: #131a24;

  /* Accent palette */
  --accent-primary: #3b82f6;
  --accent-secondary: #06b6d4;

  /* Glow (ligeramente más controlado) */
  --accent-glow: rgba(59, 130, 246, 0.08);
  --accent-glow-soft: rgba(6, 182, 212, 0.05);

  /* Text */
  --text-primary: #e6edf3;
  --text-secondary: #94a3b8;

  /* UI */
  --radius: 10px;
  --shadow: rgba(0, 0, 0, 0.55) 0px 15px 40px;
  --transition-fast: 0.2s ease-in-out;
}

/* ----------------------------- */
/* Base Styles */
/* ----------------------------- */

html {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  overflow-x: hidden;
  max-width: 100vw;
}

.nav-link {
  position: relative;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.25s ease;
  font-size: 0.9rem;
}



.mobile-nav-link {
  display: block;
  padding: 0.7rem 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 0%;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  transition: all 0.3s ease;
  transform: translateX(-50%);
  border-radius: 2px;
  opacity: 0.8;
}

.nav-link:hover {
  color: var(--text-primary);
}

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

.nav-link:focus-visible,
.cta-btn:focus-visible,
.lang-toggle:focus-visible,
.experience-toggle:focus-visible,
#certifications-list button:focus-visible,
#social-links a:focus-visible {
  outline: 2px solid rgba(59, 130, 246, 0.9);
  outline-offset: 3px;
}

body {
  margin: 0;
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(
      700px 500px at 10% 12%,
      var(--accent-glow),
      transparent 60%
    ),
    radial-gradient(
      900px 700px at 95% 95%,
      var(--accent-glow-soft),
      transparent 65%
    ),
    linear-gradient(180deg, #05070a 0%, #070c13 40%, #0b1017 100%);
  background-attachment: fixed;
  background-size: cover;

  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ----------------------------- */
/* Hero Background Blobs */
/* ----------------------------- */

#hero {
  position: relative;
}

#hero::before {
  content: "";
  position: absolute;
  top: -10%;
  right: -10%;
  width: 60%;
  height: 140%;
  background:
    radial-gradient(circle at 20% 30%, var(--accent-glow), transparent 45%),
    radial-gradient(circle at 80% 70%, var(--accent-glow-soft), transparent 50%);
  filter: blur(90px);
  transform: rotate(-10deg);
  pointer-events: none;
  z-index: 0;
}

#hero::after {
  content: "";
  position: absolute;
  left: -5%;
  bottom: -20%;
  width: 45%;
  height: 100%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(59, 130, 246, 0.05),
    transparent 45%
  );
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

/* ----------------------------- */
/* Glass Card */
/* ----------------------------- */

.glass-card {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.03),
    rgba(255, 255, 255, 0.02)
  );
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  backdrop-filter: blur(6px) saturate(120%);
  transition: all var(--transition-fast);
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

/* ----------------------------- */
/* Projects Card Glow Hover */
/* ----------------------------- */

.project-card-glow:hover {
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.18);
  border-color: var(--accent-glow);
}

/* ----------------------------- */
/* CTA Button */
/* ----------------------------- */

.cta-btn {
  display: inline-block;
  margin-top: 1.7rem;
  padding: 0.7rem 2rem;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.06),
    rgba(255, 255, 255, 0.03)
  );
  color: #fff;
  border-radius: calc(var(--radius) + 4px);
  font-weight: 600;
  letter-spacing: 0.4px;
  font-size: 1rem;
  text-decoration: none;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.cta-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: rgba(0, 0, 0, 0.6) 0px 15px 40px;
}

.lang-toggle:hover:not(.active) {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.09);
}

.lang-toggle.active {
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.25),
    rgba(6, 182, 212, 0.25)
  );
  color: #fff;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 2.5px 15px rgba(59, 130, 246, 0.3);
}

@keyframes langPop {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

.animate-lang-pop {
  animation: langPop 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.experience-toggle {
  width: 100%;
  text-align: left;
  background: transparent;
}

/* ----------------------------- */
/* Hero image styling */
/* ----------------------------- */
.hero-img-wrap {
  display: inline-block;
  padding: 4px; /* ancho del borde */
  border-radius: 9999px;
  background: linear-gradient(
    90deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  transition:
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.12);
}
.hero-img-inner {
  display: block;

  border-radius: 9999px;
  object-fit: cover;
  background: var(--bg-surface);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
  transition: transform var(--transition-fast);
}
.hero-img-wrap:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.18);
}
.hero-img-wrap:hover .hero-img-inner {
  transform: scale(1.02);
}

/* ----------------------------- */
/* Animation Utility */
/* ----------------------------- */

.animate-section {
  opacity: 0;
  transform: translateY(20px);
}

/* ----------------------------- */
/* Stats Card 3D Effect */
/* ----------------------------- */

.stat-card {
  transition:
    transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    box-shadow 0.2s ease,
    border-color 0.2s ease;
  transform-style: preserve-3d;
  will-change: transform;
}

.stat-card:hover {
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.3);
  z-index: 10;
}

.stat-card .spotlight {
  transition: opacity 0.3s ease;
  z-index: 1;
}

.stat-card-content {
  transform: translateZ(20px);
  transition: transform 0.3s ease;
  transform-style: preserve-3d;
}

.stat-card-icon {
  transform: translateZ(30px);
  transition: transform 0.3s ease;
  transform-style: preserve-3d;
  z-index: 2;
}

/* ----------------------------- */
/* Custom Scrollbar */
/* ----------------------------- */

::-webkit-scrollbar {
  width: 11px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background-color: rgba(255, 255, 255, 0.3);
}