:root {
  --bg: #0b0f1a;
  --bg-soft: #121829;
  --card: #161d31;
  --card-hover: #1c2540;
  --text: #e8ecf5;
  --text-dim: #9aa6c0;
  --border: #243049;
  --accent: #6d8bff;
  --accent-2: #a06bff;
  --green: #34d399;
  --amber: #fbbf24;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  --max: 1100px;
}

[data-theme="light"] {
  --bg: #f6f8fc;
  --bg-soft: #ffffff;
  --card: #ffffff;
  --card-hover: #f0f3fa;
  --text: #16203a;
  --text-dim: #566584;
  --border: #e2e8f4;
  --shadow: 0 10px 40px rgba(40, 60, 120, 0.12);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

.bg-glow {
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(109, 139, 255, 0.18), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* Navegación */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 5vw, 3rem);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav__logo {
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.nav__logo span { color: var(--accent); }

.nav__links {
  display: flex;
  gap: 1.5rem;
}
.nav__links a {
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--text); }

.nav__theme {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  transition: transform 0.2s, background 0.2s;
}
.nav__theme:hover { transform: scale(1.1); background: var(--card-hover); }

/* Hero */
.hero {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 10vw, 7rem) clamp(1rem, 5vw, 3rem) 3rem;
  text-align: center;
}
.hero__eyebrow {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}
.hero__title {
  font-size: clamp(2rem, 6vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 1.2rem;
}
.grad {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__subtitle {
  color: var(--text-dim);
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  max-width: 600px;
  margin: 0 auto 2rem;
}
.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn--primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 24px rgba(109, 139, 255, 0.35);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(109, 139, 255, 0.45); }
.btn--ghost {
  background: var(--card);
  color: var(--text);
  border-color: var(--border);
}
.btn--ghost:hover { transform: translateY(-2px); background: var(--card-hover); }

.hero__stats {
  display: flex;
  gap: 2.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 3rem;
}
.stat { text-align: center; }
.stat__num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
}
.stat__label {
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* Secciones */
.section {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 5rem) clamp(1rem, 5vw, 3rem);
}
.section__head { margin-bottom: 2rem; text-align: center; }
.section__title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 0.5rem;
}
.section__desc { color: var(--text-dim); }
.section--contact { text-align: center; }

/* Filtros */
.filters {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.filter {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.2s;
}
.filter:hover { color: var(--text); border-color: var(--accent); }
.filter.is-active {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
  border-color: transparent;
}

/* Grilla de proyectos */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  animation: fadeUp 0.5s ease both;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, rgba(109, 139, 255, 0.25), rgba(160, 107, 255, 0.25));
  display: grid;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.card__media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(
    100deg,
    transparent 20%,
    rgba(255, 255, 255, 0.07) 50%,
    transparent 80%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
}
.card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.5s ease, transform 0.4s ease;
}
.card__img.is-loaded { opacity: 1; }
.card:hover .card__img.is-loaded { transform: scale(1.04); }

@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

.card__body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  flex-grow: 1;
}
.badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.card__media .badge {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  z-index: 2;
  background: rgba(11, 15, 26, 0.7);
  backdrop-filter: blur(6px);
}
.badge--completado { color: var(--green); }
.badge--proximo { color: var(--amber); }

.card__title { font-size: 1.15rem; font-weight: 700; line-height: 1.25; }
.card__desc { color: var(--text-dim); font-size: 0.95rem; flex-grow: 1; }
.card__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag {
  font-size: 0.75rem;
  color: var(--text-dim);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
}
.card__links { display: flex; gap: 1rem; margin-top: 0.4rem; }
.card__links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}
.card__links a:hover { text-decoration: underline; }

.empty {
  text-align: center;
  color: var(--text-dim);
  padding: 3rem 0;
}

/* Sobre mí */
.about__text { max-width: 700px; margin: 0 auto; text-align: center; }
.about__text p { color: var(--text-dim); margin: 1rem 0; }
.about__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 1.5rem;
}
.about__tags li {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
}

/* Contacto */
.contact__links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .nav__links { display: none; }
  .hero__stats { gap: 1.5rem; }
}