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

/* INFO GENER. WEB  */
body {
  background: #000;
  color: #fff;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 300;
}

/* BARRA SUPERIOR */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand-left a,
.menu-right a {
  text-decoration: none;
  color: #fff;
  opacity: 0.9;
  font-size: 13px;
  transition: opacity .3s;
}
.menu-right { display: flex; gap: 28px; }
.brand-left a:hover,
.menu-right a:hover { opacity: 1; }

/* PÁGINA PRINCIPAL  */
.principal {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center;
  overflow: hidden;
}

.fondo {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  filter: brightness(.65);
}

/* Texto */
.principal-titulo {
  position: relative;
  z-index: 2;
  font-weight: 300;
  font-style: italic;
  font-size: clamp(36px, 8vw, 100px);
  letter-spacing: -0.02em;
  color: #fff;
}

.principal-titulo .line1,
.principal-titulo .line2 {
  display: block;
}


/* BARRA INFERIOR */
.bottombar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  font-size: 12px;
  color: #ccc;
}
.bottombar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
}
.left { justify-self: start; }
.center { justify-self: center; }
.right { justify-self: end; }

/* ABOUT ME */
.about {
  padding: 120px 24px;
  text-align: center;
}

.about-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.about-title {
  font-size: 56px;
  font-weight: 300;
  margin-bottom: 40px;
}

.about-description {
  max-width: 800px;
  margin: 0 auto 50px;
  line-height: 1.7;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.about-card h3 {
  font-size: 14px;
  margin-bottom: 10px;
}

.about-card ul {
  list-style: none;
  font-size: 14px;
  line-height: 1.6;
}

.about-card li + li {
  margin-top: 4px;
}

/* HARD SKILLS */
.skills-icons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;

}

.skills-icons span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 12px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 8px;
  font-size: 13px;
  opacity: 0.95;
}


/* RESPONSIVE PRINCIP*/
@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; }
  .principal-titulo { font-size: clamp(28px, 10vw, 70px); }
  .menu-right { gap: 18px; }
  .brand-left a { font-size: 13px; }
  .menu-right a { font-size: 12px; }
}


/*  PORTFOLIO  */
.portfolio {
  background: #000; color: #fff; min-height: 100vh;
  padding: 120px 24px 140px;
  display: flex; 
  justify-content: center; 
  align-items: flex-start; 
  text-align: center;
}
.portfolio-box { 
  max-width: 1200px; 
  width: 100%; 
}

.portfolio-title {
  font-size: 64px;
  font-weight: 300;
  font-style: italic;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.portfolio-subtitle {
  font-size: 18px;
  font-weight: 300;
  opacity: 0.8;
  margin-bottom: 40px;
}

/*  GRID */
.portfolio-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  margin-top: 24px;
}
.project {
  flex: 1 1 calc(50% - 24px);
  max-width: 600px;
}

/* Marco blanco */
.contenedor {
  border: 1px solid #fff;
  border-radius: 8px;
  overflow: hidden;
}

/* Proyecto dentro */
.media {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: cover;

  /* blanco y negro */
  filter: grayscale(1);
}

/* Hover */
.media {
  filter: grayscale(1);
  transition: filter 0.3s ease;
}

/* Vuelve a color */
.project:hover .media {
  filter: grayscale(0);
}


/* Texto debajo */
.project-descrip {
  text-align: center;
  font-size: 14px;
  margin-top: 10px;
  opacity: 0.9;
}

/* Animación 4 keyframes */
@keyframes bwToColor {
  0% {
    filter: grayscale(1) contrast(1) saturate(1);
  }
  50% {
    filter: grayscale(0.4) contrast(1.1) saturate(1.1);
  }
  100% {
    filter: grayscale(0) contrast(1) saturate(1);
  }
}

/*  RESPONSIVE */

@media (max-width: 1200px) {
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .portfolio-grid {
    gap: 20px;
  }
  .project {
    flex: 1 1 calc(50% - 20px);
  }
}

@media (max-width: 800px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .project {
    flex: 1 1 100%;
  }
  .portfolio-grid {
    gap: 16px;
  }
}