/* ==========================================================================
   Cristian Luque Núñez — web personal
   Hoja de estilos única. Tema oscuro por defecto, claro con [data-theme="light"].
   ========================================================================== */

/* --- Variables ----------------------------------------------------------- */
:root {
  --bg:            #0b0f14;
  --bg-elev:       #111823;
  --bg-elev-2:     #16202e;
  --border:        #1f2b3a;
  --text:          #e6edf5;
  --text-soft:     #9fb0c3;
  --text-dim:      #6b7f96;
  --accent:        #34d399;
  --accent-soft:   rgba(52, 211, 153, 0.12);
  --accent-strong: #6ee7b7;
  --shadow:        0 20px 50px -25px rgba(0, 0, 0, 0.85);

  --radius: 14px;
  --radius-sm: 10px;
  --maxw: 1080px;
  --gutter: clamp(1.15rem, 4vw, 2.5rem);

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

[data-theme="light"] {
  --bg:            #f6f8fa;
  --bg-elev:       #ffffff;
  --bg-elev-2:     #f0f3f7;
  --border:        #dde3ea;
  --text:          #16202b;
  --text-soft:     #4a5766;
  --text-dim:      #74828f;
  --accent:        #0e9f6e;
  --accent-soft:   rgba(14, 159, 110, 0.10);
  --accent-strong: #0b7a54;
  --shadow:        0 20px 45px -30px rgba(22, 32, 43, 0.45);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #04120c;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-weight: 600;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

/* --- Layout helpers ------------------------------------------------------ */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 6.5rem) var(--gutter);
}

.section__head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin-bottom: 2.25rem;
}

.section__index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
}

.section__title {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section__body p + p { margin-top: 1.1rem; }
.section__body { max-width: 62ch; color: var(--text-soft); }
.section__body strong { color: var(--text); font-weight: 600; }

/* --- Header / Nav -------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--border); }

.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.85rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav__brand { display: inline-flex; align-items: center; gap: 0.6rem; font-weight: 600; }

.nav__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}

.nav__name { font-size: 0.95rem; letter-spacing: -0.01em; }

.nav__menu {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav__menu a {
  display: block;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: color 0.2s ease, background 0.2s ease;
}
.nav__menu a:hover { color: var(--text); background: var(--bg-elev); }
.nav__menu a.is-active { color: var(--accent); }

.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-left: 0.3rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-elev);
  color: var(--text-soft);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); transform: rotate(-12deg); }
.theme-toggle__icon { width: 18px; height: 18px; }
[data-theme="dark"] .theme-toggle__icon--sun { display: none; }
[data-theme="light"] .theme-toggle__icon--moon { display: none; }

.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  cursor: pointer;
}
.nav__toggle-bars,
.nav__toggle-bars::before,
.nav__toggle-bars::after {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav__toggle-bars::before { content: ""; transform: translateY(-6px); }
.nav__toggle-bars::after  { content: ""; transform: translateY(4px); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bars { background: transparent; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bars::before { transform: translateY(0) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bars::after  { transform: translateY(-2px) rotate(-45deg); }

/* --- Hero ---------------------------------------------------------------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 5rem) var(--gutter) clamp(2rem, 5vw, 3rem);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  align-items: center;
  gap: clamp(2rem, 6vw, 4.5rem);
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 0.65rem;
}
.hero__eyebrow::before { content: "> "; color: var(--text-dim); }

.hero__title {
  font-size: clamp(2.1rem, 6.5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.hero__role {
  margin-top: 0.9rem;
  font-size: clamp(0.95rem, 2.4vw, 1.1rem);
  font-weight: 500;
  color: var(--text);
  padding-left: 0.9rem;
  border-left: 2px solid var(--accent);
}

.hero__lead {
  margin-top: 1.35rem;
  max-width: 52ch;
  color: var(--text-soft);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.72rem 1.35rem;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.btn--primary { background: var(--accent); color: #04140d; }
.btn--primary:hover { background: var(--accent-strong); transform: translateY(-2px); }
.btn--ghost { border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.hero__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  font-size: 0.88rem;
  color: var(--text-dim);
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.hero__photo { justify-self: center; }
.hero__photo-frame {
  position: relative;
  width: clamp(220px, 30vw, 320px);
  aspect-ratio: 1;
  border-radius: 50%;
  padding: 6px;
  background: linear-gradient(140deg, var(--accent) 0%, transparent 55%, var(--border) 100%);
}
.hero__photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--bg);
}

/* --- Timeline ------------------------------------------------------------ */
.timeline { position: relative; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(var(--border), transparent);
}
.timeline__item {
  position: relative;
  padding: 0 0 2.4rem 2.25rem;
}
.timeline__item:last-child { padding-bottom: 0; }

.timeline__dot {
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.timeline__item:first-child .timeline__dot { background: var(--accent); box-shadow: 0 0 0 5px var(--accent-soft); }

.timeline__date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--accent);
  text-transform: uppercase;
}
.timeline__role { margin-top: 0.25rem; font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; }
.timeline__place { font-size: 0.9rem; color: var(--text-dim); margin-bottom: 0.7rem; }

.timeline__list { display: grid; gap: 0.45rem; max-width: 68ch; }
.timeline__list li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--text-soft);
  font-size: 0.95rem;
}
.timeline__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.note {
  margin-top: 2rem;
  padding: 0.9rem 1.1rem;
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.88rem;
  color: var(--text-soft);
  max-width: 70ch;
}

/* --- Grid & Cards -------------------------------------------------------- */
.grid { display: grid; gap: 1.1rem; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 + .cert, .grid--3 + .languages { margin-top: 1.1rem; }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem;
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}
.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); transform: translateY(-3px); }

.card__title { font-size: 1.02rem; font-weight: 600; margin-bottom: 0.9rem; }
.card__sub { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 0.6rem; }
.card__text { font-size: 0.92rem; color: var(--text-soft); }
.card--edu .card__title { margin-bottom: 0.4rem; }

.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chips li {
  padding: 0.32rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elev-2);
  font-size: 0.82rem;
  color: var(--text-soft);
  font-family: var(--font-mono);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.chips li:hover { color: var(--accent); border-color: var(--accent); }
.chips__hint { color: var(--text-dim); }

.languages, .cert {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem;
}
.languages__title, .cert__title { font-size: 1.02rem; font-weight: 600; margin-bottom: 0.8rem; }
.cert__text { font-size: 0.92rem; color: var(--text-soft); }

/* --- Contacto ------------------------------------------------------------ */
.section--contact { padding-bottom: clamp(4rem, 9vw, 7rem); }
.contact__lead { max-width: 55ch; color: var(--text-soft); margin-bottom: 1.9rem; }

.contact__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.contact__item {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1.05rem 1.15rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
a.contact__item:hover { border-color: var(--accent); transform: translateY(-3px); }

.contact__icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent);
}
.contact__icon svg { width: 20px; height: 20px; }
.contact__body { display: grid; min-width: 0; }
.contact__label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-dim); }
.contact__value { font-size: 0.92rem; color: var(--text); overflow-wrap: anywhere; }

/* --- Footer -------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  max-width: var(--maxw);
  margin: 0 auto;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.site-footer__top { color: var(--text-soft); transition: color 0.2s ease; }
.site-footer__top:hover { color: var(--accent); }

/* --- Reveal on scroll ---------------------------------------------------- */
/* El estado oculto solo se aplica con JS activo (clase .js en <html>), de modo
   que sin JavaScript el contenido siempre es visible. */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
html.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* --- Responsive ---------------------------------------------------------- */
@media (max-width: 860px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero__photo { order: -1; }
  .hero__text { display: flex; flex-direction: column; align-items: center; }
  .hero__role { border-left: 0; border-top: 0; padding-left: 0; }
  .hero__actions { justify-content: center; }
  .grid--3 { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: absolute;
    left: var(--gutter);
    right: var(--gutter);
    top: calc(100% + 0.5rem);
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.7rem;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  }
  .nav__menu.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__menu a { padding: 0.6rem 0.7rem; font-size: 0.95rem; }
  .theme-toggle { margin: 0.3rem 0.2rem 0.2rem; justify-self: start; }
  .grid--2 { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .nav__name { display: none; }
  .hero__title { letter-spacing: -0.03em; }
}

/* --- Accesibilidad / preferencias --------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .site-header, .hero__actions, .theme-toggle, .nav__toggle, .site-footer__top { display: none; }
  body { background: #fff; color: #000; }
  .card, .contact__item, .languages, .cert { border-color: #ccc; }
}