/* =========================================================
   sebastianavila.cloud — Paleta A "Petróleo nocturno"
   Oscuro por defecto; claro con prefers-color-scheme o el botón.
   ========================================================= */

:root {
  --bg: #0B1622;
  --bg-2: #0F1E2D;
  --text: #E6EDF3;
  --muted: #9FB0C0;
  --line: rgba(230, 237, 243, .10);
  --primary: #2EC4B6;
  --accent: #9D8CFF;
  --grid: rgba(46, 196, 182, .07);
  --glow-1: rgba(157, 140, 255, .14);
  --glow-2: rgba(46, 196, 182, .10);
  --on-primary: #0B1622;
  --radius: 14px;
  --font-title: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #F5F8FA;
    --bg-2: #FFFFFF;
    --text: #0B1622;
    --muted: #4A5B6B;
    --line: rgba(11, 22, 34, .10);
    --primary: #0B6E75;
    --accent: #5B3FD6;
    --grid: rgba(11, 110, 117, .06);
    --glow-1: rgba(91, 63, 214, .08);
    --glow-2: rgba(11, 110, 117, .07);
    --on-primary: #FFFFFF;
    color-scheme: light;
  }
}

:root[data-theme="light"] {
  --bg: #F5F8FA;
  --bg-2: #FFFFFF;
  --text: #0B1622;
  --muted: #4A5B6B;
  --line: rgba(11, 22, 34, .10);
  --primary: #0B6E75;
  --accent: #5B3FD6;
  --grid: rgba(11, 110, 117, .06);
  --glow-1: rgba(91, 63, 214, .08);
  --glow-2: rgba(11, 110, 117, .07);
  --on-primary: #FFFFFF;
  color-scheme: light;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
strong { font-weight: 600; }

.wrap { width: min(1080px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); }
.mono { font-family: var(--font-mono); font-size: .85rem; color: var(--muted); }

.skip { position: absolute; left: -999px; top: 8px; background: var(--primary); color: var(--on-primary); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 16px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; gap: 24px; height: 60px; }
.nav__logo { font: 700 1.15rem var(--font-title); color: var(--text); letter-spacing: -.3px; }
.nav__logo span { color: var(--accent); margin-left: 2px; }
.nav__logo:hover { text-decoration: none; }
.nav__inner > nav { margin-left: auto; }
.nav__links { display: flex; gap: 22px; list-style: none; margin: 0; padding: 0; }
.nav__links a { color: var(--muted); font-size: .92rem; font-weight: 500; }
.nav__links a:hover { color: var(--text); text-decoration: none; }

.theme {
  display: grid; place-items: center; width: 38px; height: 38px;
  background: transparent; border: 1px solid var(--line); border-radius: 10px;
  color: var(--text); cursor: pointer;
}
.theme svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.theme__moon { display: none; }
:root[data-theme="light"] .theme__sun { display: none; }
:root[data-theme="light"] .theme__moon { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme__sun { display: none; }
  :root:not([data-theme="dark"]) .theme__moon { display: block; }
}

@media (max-width: 720px) {
  .nav__links { display: none; }
  .theme { margin-left: auto; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 110px 0 90px;
  background:
    radial-gradient(ellipse 700px 380px at 100% 0%, var(--glow-1), transparent 70%),
    radial-gradient(ellipse 600px 300px at 30% 110%, var(--glow-2), transparent 70%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 36px 36px;
  -webkit-mask-image: linear-gradient(90deg, transparent 25%, #000 85%);
          mask-image: linear-gradient(90deg, transparent 25%, #000 85%);
}
.hero .wrap { position: relative; }

.eyebrow { font: 400 .85rem var(--font-mono); color: var(--muted); margin: 0 0 18px; }
.eyebrow span, .slash { color: var(--accent); font-weight: 600; }

.hero__name {
  font: 700 clamp(2.6rem, 7vw, 4.6rem)/1.05 var(--font-title);
  letter-spacing: -1px; margin: 0;
}
.hero__role { font: 500 clamp(1.1rem, 2.6vw, 1.5rem) var(--font-body); color: var(--primary); margin: 14px 0 0; }
.hero__role .arrow { color: var(--accent); }
.bar { height: 4px; width: min(520px, 80%); margin: 26px 0 22px; border-radius: 2px; background: linear-gradient(90deg, var(--primary), var(--accent)); }
.hero__tagline { font-size: 1.15rem; max-width: 560px; margin: 0; }

.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.btn {
  display: inline-flex; align-items: center; padding: 11px 20px;
  border: 1px solid var(--line); border-radius: 10px;
  color: var(--text); font-weight: 500; font-size: .95rem;
  transition: border-color .2s, transform .2s;
}
.btn:hover { border-color: var(--primary); text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--primary); border-color: var(--primary); color: var(--on-primary); font-weight: 600; }
.btn--primary:hover { filter: brightness(1.08); }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  list-style: none; padding: 0; margin: 56px 0 0;
}
.stats li { border-left: 2px solid var(--accent); padding-left: 14px; }
.stats strong { display: block; font: 700 1.8rem var(--font-title); }
.stats span { color: var(--muted); font-size: .88rem; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); row-gap: 24px; } }

/* ---------- Sections ---------- */
.section { padding: 84px 0; border-top: 1px solid var(--line); }
.h2 { font: 700 clamp(1.6rem, 3.5vw, 2.1rem) var(--font-title); margin: 0 0 28px; letter-spacing: -.4px; }
.h2 .num { font: 600 .95rem var(--font-mono); color: var(--accent); margin-right: 10px; vertical-align: middle; }
.h3 { font: 600 1.2rem var(--font-title); margin: 48px 0 16px; }
.section p { margin: 0 0 16px; }

/* Experience */
.timeline { list-style: none; margin: 0; padding: 0 0 0 22px; border-left: 2px solid var(--line); }
.job { position: relative; padding: 0 0 34px; }
.job::before {
  content: ""; position: absolute; left: -29px; top: 7px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--primary);
}
.job:last-child { padding-bottom: 0; }
.job__head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 16px; align-items: baseline; }
.job h3 { font: 600 1.1rem var(--font-title); margin: 0; }
.job .at { color: var(--primary); font-weight: 500; }
.job__date { font: 400 .82rem var(--font-mono); color: var(--muted); margin: 0 !important; }
.job > p { color: var(--muted); margin-top: 8px; }

/* Cards / grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { font: 600 1.05rem var(--font-title); margin: 0 0 14px; }
.card--learning { border-style: dashed; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.tags li {
  font: 400 .8rem var(--font-mono); padding: 4px 10px; border-radius: 6px;
  background: color-mix(in srgb, var(--primary) 12%, transparent); color: var(--text);
}
.card--learning .tags li { background: color-mix(in srgb, var(--accent) 14%, transparent); }

.certs { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.certs li { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.badge { font: 600 .72rem var(--font-mono); text-transform: uppercase; letter-spacing: .5px; padding: 4px 9px; border-radius: 6px; }
.badge--ok { background: color-mix(in srgb, var(--primary) 18%, transparent); color: var(--primary); }
.badge--wip { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); }

.project p { color: var(--muted); }
.project .mono { margin: 18px 0 14px; }
.project--soon { border-style: dashed; }
.link { font-weight: 600; }

/* Contact / footer */
.contact__lead { font-size: 1.2rem; }
.footer { border-top: 1px solid var(--line); padding: 28px 0; }
.footer p { margin: 0; }