:root {
  --bg: #0b0f1a;
  --bg-alt: #0f1524;
  --surface: #141c2e;
  --border: #22304a;
  --text: #e6ebf5;
  --muted: #8b96ad;
  --accent: #4f8cff;
  --accent-2: #7c5cff;
  --gradient: linear-gradient(135deg, var(--accent), var(--accent-2));
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --font: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container { width: min(1100px, 90%); margin: 0 auto; }

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(11, 15, 26, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled { border-color: var(--border); }
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav__brand {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
}
.nav__brand span { background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav__links { display: flex; gap: 1.5rem; align-items: center; }
.nav__links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--text); }
.nav__cta {
  background: var(--gradient);
  color: #fff !important;
  padding: 0.5rem 1.1rem;
  border-radius: 8px;
  font-weight: 600;
}
.nav__right { display: flex; align-items: center; gap: 1rem; margin-left: auto; }

/* Switch de idioma ES/EN */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  user-select: none;
}
.lang-toggle__btn {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.lang-toggle__btn:hover { color: var(--text); }
.lang-toggle__btn.is-active {
  color: #fff;
  background: var(--gradient);
  border-radius: 14px;
  padding: 0.15rem 0.5rem;
}
.lang-toggle__divider { color: var(--border); font-size: 0.8rem; }

.nav__toggle { display: none; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: 0.3s;
}

/* ---------- HERO ---------- */
.hero {
  padding: 150px 0 90px;
  background:
    radial-gradient(600px 300px at 20% 10%, rgba(79, 140, 255, 0.15), transparent 70%),
    radial-gradient(600px 300px at 85% 30%, rgba(124, 92, 255, 0.12), transparent 70%),
    var(--bg);
}
.hero__eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.hero__title {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.15;
  font-weight: 800;
}
.hero__title span { background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__subtitle {
  margin: 1.2rem 0 2rem;
  max-width: 620px;
  color: var(--muted);
  font-size: 1.05rem;
}
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}
.stat strong { display: block; font-size: 1.9rem; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { color: var(--muted); font-size: 0.85rem; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 0;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--gradient); color: #fff; box-shadow: 0 8px 24px rgba(79, 140, 255, 0.35); }
.btn--ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn--block { width: 100%; }

/* ---------- SECTIONS ---------- */
.section { padding: 90px 0; }
.section--alt { background: var(--bg-alt); }
.section__title {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  text-align: center;
  font-weight: 800;
}
.section__title--left { text-align: left; }
.section__subtitle { text-align: center; color: var(--muted); margin: 0.6rem 0 2.5rem; }

/* ---------- CARDS ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.4rem;
}
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  transition: transform 0.2s, border-color 0.2s;
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); }

/* Screenshot de workflow en hover */
.card__shot {
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  overflow: hidden;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 2;
}
.card__shot::after {
  content: '🔍 Ver workflow';
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(11, 15, 26, 0.85);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border-radius: 20px;
  white-space: nowrap;
}
.card__shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.card:hover .card__shot,
.card:focus-within .card__shot {
  opacity: 1;
  transform: scale(1);
}
.card:hover { cursor: pointer; }
.card__icon { font-size: 2rem; margin-bottom: 1rem; }
.card h3 { font-size: 1.15rem; margin-bottom: 0.6rem; }
.card p { color: var(--muted); font-size: 0.93rem; margin-bottom: 1.2rem; }
.card__tags { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.card__tags li {
  background: rgba(79, 140, 255, 0.12);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
}

/* ---------- PROJECTS ---------- */
.grid--projects { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, border-color 0.2s;
}
.project:hover { transform: translateY(-4px); border-color: var(--accent); }
.project__body { padding: 1.6rem; flex: 1; }
.project__type {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
}
.project__body h3 { margin: 0.4rem 0; font-size: 1.1rem; }
.project__body p { color: var(--muted); font-size: 0.92rem; }
.project__result {
  padding: 1rem 1.6rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
}
.project__result strong { font-size: 1.4rem; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.project__result span { color: var(--muted); font-size: 0.85rem; }

/* ---------- ABOUT ---------- */
.sobre { display: grid; grid-template-columns: 180px 1fr; gap: 2.5rem; align-items: start; }
.sobre__photo {
  width: 180px; height: 180px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  box-shadow: var(--shadow);
}
.sobre__text p { color: var(--muted); margin-bottom: 1rem; }
.sobre__text strong { color: var(--text); }
.sobre__skills { list-style: none; display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.2rem; }
.sobre__skills li {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text);
}

/* ---------- FORM ---------- */
.form { max-width: 640px; margin: 0 auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form__group { margin-bottom: 1.2rem; }
.form__group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--text); }
.form__group input,
.form__group select,
.form__group textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 0.7rem 0.9rem;
  font-family: inherit;
  font-size: 0.95rem;
}
.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form__status { margin-top: 1rem; font-size: 0.9rem; text-align: center; }
.form__status.ok { color: #4ade80; }
.form__status.err { color: #f87171; }

/* ---------- FOOTER ---------- */
.footer { border-top: 1px solid var(--border); padding: 1.8rem 0; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer p { color: var(--muted); font-size: 0.85rem; }
.footer__links { display: flex; gap: 1.2rem; }
.footer__links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.footer__links a:hover { color: var(--accent); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: fixed;
    inset: 64px 0 auto 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    gap: 1.2rem;
    transform: translateY(-120%);
    transition: transform 0.3s;
  }
  .nav__links.open { transform: translateY(0); }
  .form__row { grid-template-columns: 1fr; }
  .sobre { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .sobre__text { text-align: left; }
  .hero { padding-top: 120px; }
}

/* ---------- LIGHTBOX ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(5, 8, 15, 0.92);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox__figure {
  max-width: 1100px;
  width: 100%;
  text-align: center;
}
.lightbox__figure img {
  max-width: 100%;
  max-height: 82vh;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: #fff;
}
.lightbox__caption {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.lightbox__close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.4rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.lightbox__close:hover { background: var(--surface); color: var(--accent); }
.lightbox__hint {
  position: absolute;
  top: 1.4rem;
  left: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ---------- ANIMATIONS ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }