/* ========================================
   CSS Template - Web Personal Minimalista
   Optimizado para Oracle Cloud Free Tier
   ======================================== */

/* ========== VARIABLES Y RESET ========== */
:root {
  /* Colores - Paleta personalizada (modo oscuro) */
  --color-white: #ffffff;
  --color-black: #000000;
  --color-gray-light: #4a4a4a;
  --color-gray-dark: #e0e0e0;
  --color-navy: #1a2635;
  --color-accent: #3b82f6;
  --color-card: #2a2a2a;
  --color-bg: #1a1a1a;

  /* Tipografía */
  --font-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-base: 17px;
  --line-height: 1.7;

  /* Espacios */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Otros */
  --transition: all 0.3s ease;
  --max-width: 1200px;
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-gray-dark);
  background-color: var(--color-bg);
  position: relative;
  min-height: 100%;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(59,130,246,0.1);
  pointer-events: none;
  z-index: -1;
}

/* ========== TIPOGRAFÍA ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: var(--transition);
}

a:hover {
  color: var(--color-accent);
}

a:hover {
  opacity: 0.7;
}

/* ========== LAYOUT GENERAL ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Secciones */
section {
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--color-gray-light);
}

section:last-of-type {
  border-bottom: none;
}

/* ========== HEADER ========== */
header {
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  background: rgba(66, 64, 65, 0.95);
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(12px);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ========== LANG SWITCHER ========== */
.lang-switcher {
  display: flex;
  gap: 0.4rem;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 6px;
  color: var(--color-gray-dark);
  font-size: 0.8rem;
  padding: 0.25rem 0.55rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
}

.lang-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.lang-btn.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(59,130,246,0.1);
}

nav {
  display: flex;
  gap: var(--spacing-md);
}

nav a {
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
}

/* ========== HERO SECTION ========== */
.hero {
  padding: calc(var(--spacing-xl) + 1rem) var(--spacing-md) !important;
  text-align: center;
  background: var(--color-bg);
}

.hero .container {
  position: relative;
}

.hero small {
  color: rgba(255,255,255,0.7);
  font-weight: 500;
}

.hero p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-gray-dark);
}

.hero .tagline {
  font-size: 1.2rem;
  max-width: 700px;
  line-height: 1.8;
  color: var(--color-gray-dark);
}

.hero .tagline strong {
  color: var(--color-accent);
  font-weight: 600;
}

/* ========== ABOUT SECTION ========== */
#about {
  padding: var(--spacing-xl) var(--spacing-md) !important;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  align-items: start;
  margin-top: var(--spacing-lg);
}

.about-photo-wrapper {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 1;
  border-radius: 12px;
  overflow: hidden;
  border: 3px solid rgba(59, 130, 246, 0.25);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  background: rgba(255, 255, 255, 0.05);
  margin: 0 auto;
}

.about-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-text p {
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-dark);
  line-height: 1.8;
  text-align: justify;
}

.about-text p:last-child {
  margin-bottom: 0;
}

@media (min-width: 768px) {
  .about-content {
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-lg);
  }

  .about-photo-wrapper {
    margin: 0;
  }

  .about-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

/* ========== ESPECIALIZACIÓN / CARACTERÍSTICAS ========== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.feature-item {
  padding: var(--spacing-md);
  background: var(--color-card);
  border: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}

.feature-item h3 {
  margin-bottom: var(--spacing-sm);
}

/* ========== PROYECTOS / PORTFOLIO ========== */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.project-card {
  background: var(--color-card);
  padding: var(--spacing-md);
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.project-card h3 {
  margin-bottom: var(--spacing-sm);
}

/* ========== FOOTER ========== */#contact {
  background: #0b0b0b;
  color: #ffffff;
}

#contact .contact-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) 0;
}

#contact .contact-title h2 {
  margin-bottom: var(--spacing-xs);
  font-size: 2rem;
}

#contact .contact-title p {
  max-width: 520px;
  color: rgba(255,255,255,0.8);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 50%;
  color: #ffffff;
  transition: var(--transition);
}

.social-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(59,130,246,0.1);
}

.social-links svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}
footer {
  padding: var(--spacing-lg) var(--spacing-md);
  background: var(--color-navy);
  color: var(--color-white);
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
}

footer a {
  color: var(--color-white);
  border-color: var(--color-white);
}

.footer-links {
  margin: var(--spacing-md) 0;
}

.footer-links a {
  margin: 0 var(--spacing-sm);
}

/* ========== UTILIDADES ========== */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  :root {
    --font-size-base: 14px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  nav {
    gap: var(--spacing-sm);
  }

  section {
    padding: var(--spacing-lg) 0;
  }

  .projects {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  header .container {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: var(--spacing-md) !important;
  }

  h1 {
    font-size: 1.5rem;
  }

  .features {
    grid-template-columns: 1fr;
  }
}

/* ========== ANIMACIONES SCROLL ========== */
section, .feature-item, .project-card {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation for cards */
.feature-item:nth-child(1) { transition-delay: 0.1s; }
.feature-item:nth-child(2) { transition-delay: 0.2s; }
.feature-item:nth-child(3) { transition-delay: 0.3s; }
.feature-item:nth-child(4) { transition-delay: 0.4s; }

.project-card:nth-child(1) { transition-delay: 0.1s; }
.project-card:nth-child(2) { transition-delay: 0.2s; }
.project-card:nth-child(3) { transition-delay: 0.3s; }

/* ========== OPTIMIZACIONES PARA LOW-END ========== */
/* Desactiva animaciones complejas en dispositivos de bajo rendimiento */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  section, .feature-item, .project-card {
    opacity: 1 !important;
    transform: none !important;
  }

  .wave, .particle {
    animation: none !important;
  }

  .hero-svg {
    opacity: 0.3 !important;
  }
}