/* Diseño: columna única de lectura, con una figura de tres capas en la portada
   que representa cómo separo mis sistemas (presentación, lógica, datos). */

:root {
  --bg: #F6F8FB;
  --surface: #FFFFFF;
  --ink: #0E1B2E;
  --muted: #55637A;
  --line: #DCE3EE;
  --accent: #1F4FD8;
  --accent-ink: #FFFFFF;
  --accent-soft: #E6EDFC;
  --accent-text: #173BA8;
  --ok: #17784B;
  --ok-soft: #E3F4EB;

  --f-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --f-body: "Instrument Sans", "Segoe UI", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --radius: 12px;
  --max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B1220;
    --surface: #111A2C;
    --ink: #E8EEF8;
    --muted: #98A6BD;
    --line: #22304A;
    --accent: #6C93FF;
    --accent-ink: #0B1220;
    --accent-soft: #16264A;
    --accent-text: #A9C0FF;
    --ok: #5FD39B;
    --ok-soft: #12302A;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0B1220;
  --surface: #111A2C;
  --ink: #E8EEF8;
  --muted: #98A6BD;
  --line: #22304A;
  --accent: #6C93FF;
  --accent-ink: #0B1220;
  --accent-soft: #16264A;
  --accent-text: #A9C0FF;
  --ok: #5FD39B;
  --ok-soft: #12302A;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; }
a { color: var(--accent-text); }
 
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

a { color: var(--accent-text); }

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

.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 8px 14px;
  border-radius: 8px;
  z-index: 50;
}
.skip:focus { left: 12px; }

/* ---------- cabecera ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.topbar__in {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 62px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 13px;
}

.nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.nav a {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
}
.nav a:hover { color: var(--ink); background: var(--accent-soft); }
.nav a.active { color: var(--accent-text); background: var(--accent-soft); }

.topbar__actions { display: flex; gap: 6px; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 10px;
  cursor: pointer;
}
.icon-btn:hover { border-color: var(--accent); }
.menu-btn { display: none; }

/* ---------- portada ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 56px;
  align-items: center;
  padding-block: 72px 56px;
}

.avatar {
  display: block;
  width: 132px;
  height: 132px;
  margin-bottom: 22px;
  object-fit: cover;
  object-position: center 22%;
  border-radius: 28px;
  border: 1px solid var(--line);
  background: var(--accent-soft);
}
.avatar[hidden] { display: none; }

.eyebrow {
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-text);
}

h1, h2, h3 { font-family: var(--f-display); text-wrap: balance; }

h1 {
  margin: 0 0 18px;
  font-size: clamp(38px, 6.4vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.hero__lead {
  margin: 0 0 28px;
  max-width: 34em;
  font-size: 20px;
  line-height: 1.55;
  color: var(--muted);
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
}
.btn:hover { border-color: var(--accent); }
.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn--primary:hover { filter: brightness(1.08); }

.hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--muted);
}
.hero__facts li::before {
  content: "›";
  color: var(--accent-text);
  margin-right: 10px;
}

/* figura de capas */
.stack {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.stack__layer {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.stack__layer--1 { margin-right: 28px; border-left: 4px solid var(--accent); }
.stack__layer--2 { margin-inline: 14px; border-left: 4px solid var(--accent); }
.stack__layer--3 { margin-left: 28px; border-left: 4px solid var(--accent); }

.stack__tag {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}
.stack__tech {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.stack__link {
  width: 2px;
  height: 22px;
  margin-left: 50%;
  background: repeating-linear-gradient(var(--line) 0 4px, transparent 4px 8px);
}

.stack figcaption {
  margin-top: 18px;
  font-size: 14px;
  color: var(--muted);
}

/* ---------- secciones ---------- */
.sec { padding-block: 56px; border-top: 1px solid var(--line); }

.sec h2 {
  margin: 0 0 28px;
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -0.02em;
  font-weight: 700;
}

.about { max-width: 42em; }
.about p { margin: 0 0 16px; }

/* habilidades */
.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}
.skill {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.skill h3 {
  margin: 0 0 14px;
  font-size: 13px;
  font-family: var(--f-mono);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-text);
}
.chips, .tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--ink);
  font-size: 15px;
}

/* proyectos */
.projects { display: grid; gap: 16px; }
.project {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.project__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px 16px;
}
.project h3 {
  margin: 0;
  max-width: 34em;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -0.015em;
}
.badge {
  flex: none;
  padding: 3px 12px;
  border-radius: 999px;
  background: var(--ok-soft);
  color: var(--ok);
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 500;
}
.project__desc { margin: 0; max-width: 46em; color: var(--muted); }
.tags li {
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--f-mono);
  font-size: 12.5px;
  color: var(--muted);
}
.link { font-weight: 600; text-decoration: none; align-self: flex-start; }
.link:hover { text-decoration: underline; }

/* formación */
.timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.tl {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 24px;
  padding-block: 20px;
  border-top: 1px solid var(--line);
}
.tl:first-child { border-top: 0; padding-top: 0; }
.tl__when { font-family: var(--f-mono); font-size: 13.5px; color: var(--muted); padding-top: 4px; }
.tl h3 { margin: 0 0 2px; font-size: 20px; letter-spacing: -0.01em; }
.tl p { margin: 0 0 6px; }
.tl__where { color: var(--accent-text); font-weight: 600; }

/* contacto */
.contact__lead { margin: 0 0 24px; max-width: 36em; font-size: 20px; }
.contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}
.contact__list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 0;
}
.contact__label {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact__value { overflow-wrap: anywhere; font-weight: 500; }

/* pie */
.footer { border-top: 1px solid var(--line); padding-block: 28px; color: var(--muted); font-size: 14px; }
.footer__in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 20px; }

/* ---------- pantallas pequeñas ---------- */
@media (max-width: 860px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 40px; padding-block: 48px 40px; }
  .tl { grid-template-columns: minmax(0, 1fr); gap: 4px; }
}

@media (max-width: 720px) {
  .menu-btn { display: grid; }
  .nav {
    display: none;
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 2px;
    padding: 10px max(20px, env(safe-area-inset-left, 0px));
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px; font-size: 16px; }
  .topbar__actions { margin-left: auto; }
  body { font-size: 16px; }
  .hero__lead { font-size: 18px; }
  .project { padding: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}