/* === VARIABLES DE TEMA === */
:root {
  --color-bg-dark: #0a0a0f;
  --color-bg-gradient-start: #2e005a;
  --color-bg-gradient-end: #12002b;
  --color-primary: #7f00ff;
  --color-accent: #ff4d97;
  --color-white: #ffffff;
  --color-grey-light: #b0b0c5;
  --color-overlay: rgba(255, 255, 255, 0.1);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Roboto', sans-serif;
  --transition-fast: 0.3s ease-out;
}

/* === RESET Y BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html, body {
  width: 100%;
  min-height: 100vh;
  background: var(--color-bg-dark);
  color: var(--color-white);
  font-family: var(--font-body);
  overflow-x: hidden;
}
.container {
  width: min(90%, 1200px);
  margin: 0 auto;
}

a {
  text-decoration: none;
  color: inherit;
}

/* === FONDOS DINÁMICOS === */
.hero {
  position: relative;
  background: linear-gradient(145deg, var(--color-bg-gradient-start), var(--color-bg-gradient-end));
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
  text-align: center;
  padding: 6rem 1rem;
}
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* === HERO CONTENT === */
.hero-content {
  position: relative;
  z-index: 2;
}
.hero::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: url('../img/overlay-pattern.png') center/cover;
  opacity: 0.15;
  z-index: 1;
}
.logo {
  width: 120px;
  margin-bottom: 1rem;
}
#titulo-serendipia {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 4rem);
  letter-spacing: 1px;
  margin-bottom: 1rem;
}
#subtitulo-hero {
  font-size: 1.125rem;
  opacity: 0.8;
  margin-bottom: 2rem;
}

/* === BOTONES DE HERO === */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 50px;
  font-weight: 500;
  font-family: var(--font-body);
  transition: transform var(--transition-fast), background var(--transition-fast);
}
.btn-primary {
  background: var(--color-white);
  color: var(--color-bg-gradient-end);
  margin: 0 0.5rem;
}
.btn-primary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-3px);
}
.btn-secondary {
  background: transparent;
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
  margin: 0 0.5rem;
}
.btn-secondary:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-3px);
}
.btn-download {
  font-size: 0.9rem;
  margin: 0 0.25rem;
}

/* === SECCIÓN ABOUT === */
.about {
  padding: 4rem 1rem;
  background: var(--color-bg-dark);
}
#titulo-about {
  font-family: var(--font-display);
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-accent);
}
#texto-about {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-grey-light);
  max-width: 800px;
  margin: 0 auto;
}

/* === SECCIÓN BENEFICIOS === */
.benefits {
  padding: 4rem 1rem;
  background: var(--color-bg-gradient-end);
}
#titulo-benefits {
  font-family: var(--font-display);
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--color-white);
}
#intro-benefits {
  text-align: center;
  color: var(--color-grey-light);
  margin-bottom: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}
.benefit-item {
  background: var(--color-overlay);
  backdrop-filter: blur(10px);
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: transform var(--transition-fast);
}
.benefit-item:hover {
  transform: translateY(-5px) scale(1.02);
}
.benefit-item h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}
.benefit-item ul {
  list-style: none;
  padding-left: 1rem;
}
.benefit-item ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-white);
}
.benefit-item ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-accent);
  font-size: 1.2rem;
  line-height: 1;
}

/* === FOOTER === */
.footer {
  background: var(--color-bg-dark);
  padding: 2rem 1rem;
  text-align: center;
}
.footer p {
  color: var(--color-grey-light);
  font-size: 0.9rem;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero {
    padding: 4rem 1rem;
  }
  #titulo-serendipia {
    font-size: 2.5rem;
  }
  .benefit-grid {
    grid-template-columns: 1fr;
  }
}

/* === PREFER REDUCED MOTION === */
@media (prefers-reduced-motion) {
  * {
    animation: none !important;
    transition: none !important;
  }
}