/* ==========================================================
   Portafolio — estilos
   ========================================================== */

:root {
  --bg: #0a0e1a;
  --bg-alt: #0f1424;
  --surface: #141a2e;
  --surface-2: #1b2340;
  --border: rgba(148, 163, 184, 0.14);
  --text: #e6e9f2;
  --muted: #94a0b8;
  --primary: #6366f1;
  --primary-2: #22d3ee;
  --gradient: linear-gradient(120deg, var(--primary) 0%, var(--primary-2) 100%);
  --radius: 16px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;
  --nav-h: 72px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.2; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }

.wrap { width: min(1140px, 100% - 2.5rem); margin-inline: auto; }

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--gradient); color: #fff; box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.7); }
.btn--primary:hover { box-shadow: 0 14px 34px -10px rgba(34, 211, 238, 0.7); }
.btn--ghost { background: rgba(255, 255, 255, 0.04); border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: rgba(99, 102, 241, 0.6); background: rgba(99, 102, 241, 0.08); }
.btn--outline { border-color: rgba(99, 102, 241, 0.6); color: var(--text); }
.btn--outline:hover { background: rgba(99, 102, 241, 0.15); }
.btn--sm { padding: 0.5rem 1rem; font-size: 0.85rem; }
.btn--lg { padding: 1rem 1.8rem; font-size: 1.05rem; }

/* ---------- Navegación ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 100;
  transition: background 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-color: var(--border);
}
.nav__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav__logo { display: flex; align-items: center; gap: 0.6rem; font-weight: 700; font-size: 1.05rem; }
.nav__logo-mark {
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.25rem 0.45rem;
  border-radius: 8px;
  background: var(--gradient);
  color: #fff;
}
.nav__links { display: flex; align-items: center; gap: 2rem; }
.nav__links a:not(.btn) { color: var(--muted); font-weight: 500; font-size: 0.95rem; transition: color 0.2s; }
.nav__links a:not(.btn):hover,
.nav__links a.is-active { color: var(--text); }
.nav__toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--text);
  font-size: 1.8rem;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 3rem) 0 4rem;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
}
.hero__glow {
  position: absolute;
  width: 640px;
  height: 640px;
  top: -180px;
  right: -160px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.35), transparent 65%);
  filter: blur(40px);
  pointer-events: none;
}
.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}
.badge__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.2);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  50% { box-shadow: 0 0 0 7px rgba(34, 197, 94, 0); }
}
.hero__title { font-size: clamp(2.4rem, 5.5vw, 4rem); font-weight: 800; margin-top: 1.4rem; }
.hero__title .gradient-text { display: block; }
.hero__role { font-family: var(--mono); color: var(--primary-2); font-size: 1.05rem; margin-top: 1rem; }
.hero__lead { color: var(--muted); font-size: 1.12rem; max-width: 34rem; margin-top: 1.2rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2.2rem; }
.hero__social { display: flex; gap: 0.8rem; margin-top: 2.4rem; }
.hero__social a {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 1.15rem;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.hero__social a:hover { color: var(--text); border-color: rgba(99, 102, 241, 0.6); transform: translateY(-3px); }

.code-card {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow), 0 0 0 1px rgba(99, 102, 241, 0.08);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-6deg) rotateX(3deg);
  transition: transform 0.5s ease;
}
.code-card:hover { transform: none; }
.code-card__bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}
.code-card__bar span { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.code-card__bar span:nth-child(2) { background: #febc2e; }
.code-card__bar span:nth-child(3) { background: #28c840; }
.code-card__bar em { margin-left: auto; font-style: normal; font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }
.code-card__body {
  margin: 0;
  padding: 1.4rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.75;
  color: #cbd5e1;
  overflow-x: auto;
}
.code-card__body .k { color: #c084fc; }
.code-card__body .c { color: #fbbf24; }
.code-card__body .s { color: #86efac; }
.code-card__body .f { color: #67e8f9; }
.code-card__body .d { color: #f472b6; }

/* ---------- Secciones ---------- */
.section { padding: 6.5rem 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section__head { max-width: 680px; margin-bottom: 3.2rem; }
.section__eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--primary-2);
  margin-bottom: 0.9rem;
}
.section__title { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700; }
.section__subtitle { color: var(--muted); font-size: 1.08rem; margin-top: 1rem; }
.section__subtitle strong { color: var(--text); }

/* Sobre mí */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.feature {
  padding: 1.8rem 1.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.feature:hover { transform: translateY(-5px); border-color: rgba(99, 102, 241, 0.5); }
.feature__icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(99, 102, 241, 0.12);
  color: var(--primary-2);
  font-size: 1.35rem;
  margin-bottom: 1.2rem;
}
.feature h3 { font-size: 1.08rem; font-weight: 600; margin-bottom: 0.6rem; }
.feature p { color: var(--muted); font-size: 0.94rem; }

/* Proyectos */
.projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.project {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.project:hover { transform: translateY(-6px); border-color: rgba(99, 102, 241, 0.5); box-shadow: var(--shadow); }
.project__media { aspect-ratio: 16 / 10; overflow: hidden; background: var(--surface-2); border-bottom: 1px solid var(--border); }
.project__media img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform 0.6s ease; }
.project:hover .project__media img { transform: scale(1.05); }
.project__placeholder { height: 100%; display: grid; place-items: center; font-size: 2.5rem; color: var(--muted); }
.project__body { display: flex; flex-direction: column; flex: 1; padding: 1.5rem; }
.project__title { font-size: 1.2rem; font-weight: 600; }
.project__desc { color: var(--muted); font-size: 0.94rem; margin-top: 0.7rem; flex: 1; }
.project__links { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.4rem; }
.empty { color: var(--muted); grid-column: 1 / -1; }

/* Tecnologías */
.stack { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.85rem; }
.stack__item {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  font-weight: 500;
  font-size: 0.95rem;
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}
.stack__item i { color: var(--primary-2); font-size: 1.1rem; }
.stack__item:hover { border-color: rgba(99, 102, 241, 0.6); background: var(--surface-2); transform: translateY(-3px); }

/* Trayectoria */
.experience { display: grid; grid-template-columns: 2fr 1fr; gap: 2.5rem; align-items: start; }
.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.6rem;
  border-left: 2px solid var(--border);
  display: grid;
  gap: 1.5rem;
}
.timeline__item {
  position: relative;
  padding: 1.6rem 1.7rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(-1.6rem - 6px);
  top: 2rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 0 4px var(--bg-alt);
}
.timeline__head { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 0.6rem 1rem; }
.timeline__role { font-size: 1.1rem; font-weight: 600; }
.timeline__company { color: var(--primary-2); font-size: 0.92rem; margin-top: 0.2rem; }
.timeline__date { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); white-space: nowrap; }
.timeline__tasks { margin: 1rem 0 0; padding-left: 1.2rem; color: var(--muted); font-size: 0.94rem; display: grid; gap: 0.4rem; }
.timeline__tasks li::marker { color: var(--primary); }
.timeline__item .tags { margin-top: 1.1rem; }

.education { padding: 1.8rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.education__title { display: flex; align-items: center; gap: 0.6rem; font-size: 1.05rem; font-weight: 600; margin-bottom: 0.6rem; }
.education__title i { color: var(--primary-2); }
.education__item { display: grid; gap: 0.2rem; padding: 1rem 0; border-top: 1px solid var(--border); }
.education__item strong { font-weight: 600; font-size: 0.95rem; }
.education__item span { color: var(--muted); font-size: 0.88rem; }
.education__item em { font-style: normal; font-family: var(--mono); font-size: 0.78rem; color: var(--primary-2); }

/* Tecnologías (tarjetas) */
.skills { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem; }
.skill {
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.skill:hover { transform: translateY(-4px); border-color: rgba(99, 102, 241, 0.5); }
.skill__title { display: flex; align-items: center; gap: 0.6rem; font-size: 1rem; font-weight: 600; margin-bottom: 1.1rem; }
.skill__title i { color: var(--primary-2); font-size: 1.15rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 0.3rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  transition: color 0.2s, border-color 0.2s;
}
.tag:hover { color: var(--text); border-color: rgba(99, 102, 241, 0.6); }
.learning {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.1rem 1.4rem;
  border: 1px dashed rgba(99, 102, 241, 0.5);
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}
.learning i { color: var(--primary-2); font-size: 1.2rem; }
.learning strong { color: var(--text); font-weight: 600; }

/* Contacto */
.contact { max-width: 760px; margin-inline: auto; text-align: center; }
.contact-form {
  display: grid;
  gap: 1rem;
  max-width: 560px;
  margin: 2.5rem auto 0;
  padding: 1.8rem;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.contact-form .btn { justify-self: start; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form__field { display: grid; gap: 0.4rem; font-size: 0.88rem; color: var(--muted); }
.form__field input,
.form__field textarea {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
}
.form__field input:focus,
.form__field textarea:focus {
  outline: none;
  border-color: rgba(99, 102, 241, 0.7);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}
.form__field textarea { resize: vertical; }
.form__alert { padding: 0.8rem 1rem; border-radius: 10px; font-size: 0.92rem; border: 1px solid; }
.form__alert--success { color: #86efac; border-color: rgba(34, 197, 94, 0.4); background: rgba(34, 197, 94, 0.1); }
.form__alert--error { color: #fca5a5; border-color: rgba(239, 68, 68, 0.4); background: rgba(239, 68, 68, 0.1); }
.contact .section__subtitle { margin-bottom: 2.2rem; }
.contact__cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-top: 2.8rem; }
.contact__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1.5rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.25s, border-color 0.25s;
}
.contact__card:hover { transform: translateY(-4px); border-color: rgba(99, 102, 241, 0.5); }
.contact__card i { font-size: 1.5rem; color: var(--primary-2); margin-bottom: 0.4rem; }
.contact__card span { color: var(--muted); font-size: 0.85rem; }
.contact__card strong { font-weight: 600; font-size: 0.98rem; }

/* Footer */
.footer { padding: 2rem 0; border-top: 1px solid var(--border); }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: 0.9rem; }
.footer__top {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  transition: border-color 0.2s, color 0.2s;
}
.footer__top:hover { border-color: rgba(99, 102, 241, 0.6); color: var(--text); }

/* Animación al hacer scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* Efecto 3D que sigue al mouse (lo activa portafolio.js) */
.reveal[data-tilt],
.code-card[data-tilt] {
  position: relative;
  transform-style: preserve-3d;
  transition: opacity 0.7s ease, transform 0.25s ease-out, border-color 0.25s ease, box-shadow 0.25s ease;
}
[data-tilt]::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(99, 102, 241, 0.2), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
[data-tilt]:hover::after { opacity: 1; }

/* Habilidades en carrusel (se pausa al pasar el mouse) */
.marquee {
  overflow: hidden;
  margin-bottom: 3rem;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee 40s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  flex-shrink: 0;
  margin-right: 1rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--muted);
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.marquee__item:hover {
  color: var(--text);
  border-color: rgba(99, 102, 241, 0.6);
  transform: translateY(-3px);
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .badge__dot, .marquee__track { animation: none; }
  [data-tilt] { transform: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features { grid-template-columns: repeat(2, 1fr); }
  .projects { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .hero__grid { grid-template-columns: 1fr; gap: 3rem; }
  .code-card { transform: none; }
  .experience { grid-template-columns: 1fr; }

  .nav__toggle { display: block; }
  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem 1.25rem 1.5rem;
    background: rgba(10, 14, 26, 0.97);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav__links.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .nav__links a:not(.btn) { padding: 0.9rem 0; border-bottom: 1px solid var(--border); }
  .nav__links .btn { justify-content: center; margin-top: 1rem; }
  .nav.menu-open { background: rgba(10, 14, 26, 0.97); }
}

@media (max-width: 640px) {
  .section { padding: 4.5rem 0; }
  .features,
  .projects,
  .skills,
  .form__row { grid-template-columns: 1fr; }
  .hero__actions .btn { flex: 1; justify-content: center; }
  .footer__inner { flex-direction: column-reverse; text-align: center; }
}