:root{
  /* Base (modo claro por defecto) */
  --bg: #f6f8fc;
  --panel: #ffffff;
  --panel2: #f0f4ff;
  --text: #0f172a;
  --muted: #5b6475;

  /* Bordes y sombras */
  --border: #e5eaf5;
  --shadow: 0 10px 30px rgba(15, 23, 42, .08);

  /* Azules */
  --accent: #2563eb;
  --accent2: #60a5fa;
  --accentSoft: #eaf2ff;

  /* Botones */
  --btn: #2563eb;
  --btnText: #ffffff;
  --btnHover: #1d4ed8;
  --btnGhost: #ffffff;
  --btnGhostHover: #f3f6ff;

  /* Enfoque */
  --focusRing: 0 0 0 4px rgba(37, 99, 235, .12);
}

/* Modo oscuro opcional (si el sistema lo solicita) */
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b1220;
    --panel:#0f172a;
    --panel2:#111c33;
    --text:#eaf0ff;
    --muted:#aab6cf;
    --border:#1f2a44;
    --shadow: 0 10px 30px rgba(0,0,0,.35);

    --accent:#7aa2ff;
    --accent2:#9cc3ff;
    --accentSoft:#0f1b33;

    --btn:#2b5cff;
    --btnText:#ffffff;
    --btnHover:#244fd6;
    --btnGhost:#0f172a;
    --btnGhostHover:#121f3b;

    --focusRing: 0 0 0 4px rgba(122, 162, 255, .18);
  }
}

*{ box-sizing:border-box; }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(900px 600px at 20% 0%, rgba(96,165,250,.18), transparent 55%),
    radial-gradient(900px 600px at 90% 10%, rgba(37,99,235,.12), transparent 60%),
    var(--bg);
  color:var(--text);
  line-height:1.65;
}

.container{
  width:min(1100px, 92vw);
  margin:0 auto;
}

.header{ padding:64px 0 18px; }
.footer{
  padding:24px 0 44px;
  border-top:1px solid var(--border);
  margin-top:48px;
}

.hero{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:22px;
  align-items:start;
}

@media (max-width: 900px){
  .hero{ grid-template-columns: 1fr; }
}

h1{
  margin:0 0 10px;
  font-size:44px;
  letter-spacing:-0.03em;
  line-height:1.1;
}
h2{
  margin:0 0 10px;
  font-size:20px;
  letter-spacing:-0.01em;
}
.subtitle{ margin:0 0 14px; color:var(--muted); }
.bio{ margin:0 0 18px; }

.section{ margin-top:34px; }
.muted{ color:var(--muted); }
.small{ font-size: 13px; }

.links{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:12px;
}

/* Botón principal (azul) */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  background:var(--btn);
  color:var(--btnText);
  border:1px solid rgba(37,99,235,.25);
  border-radius:999px;
  text-decoration:none;
  font-weight:600;
  box-shadow: 0 10px 20px rgba(37,99,235,.18);
  transition: transform .12s ease, background .12s ease, filter .12s ease;
}
.btn:hover{
  background:var(--btnHover);
  transform: translateY(-1px);
}
.btn:active{ transform: translateY(0); }
.btn:focus-visible{
  outline:none;
  box-shadow: var(--focusRing), 0 10px 20px rgba(37,99,235,.18);
}

/* Botón neutro opcional (si lo usa con class="btn btn-ghost") */
.btn-ghost{
  background:var(--btnGhost);
  color:var(--text);
  border:1px solid var(--border);
  box-shadow:none;
}
.btn-ghost:hover{
  background:var(--btnGhostHover);
}

.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:18px;
  padding:18px;
  box-shadow: var(--shadow);
}

.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}

@media (max-width: 900px){
  .grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px){
  .grid{ grid-template-columns: 1fr; }
}

.item{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:18px;
  padding:16px;
  box-shadow: var(--shadow);
  display:flex;
  flex-direction:column;
  gap:8px;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.item:hover{
  transform: translateY(-2px);
  border-color: rgba(37,99,235,.22);
  box-shadow: 0 14px 40px rgba(15, 23, 42, .10);
}
.item h3{ margin:0; font-size:16px; }
.item p{ margin:0; color:var(--muted); font-size:14px; min-height: 36px; }

.meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  color:var(--muted);
  font-size:12px;
}

.pill{
  border:1px solid var(--border);
  background: rgba(37,99,235,.06);
  border-radius:999px;
  padding:3px 10px;
}

.item a{
  color:var(--text);
  text-decoration:none;
}
.item a:hover{ color: var(--accent); }

.toolbar{
  display:flex;
  gap:10px;
  margin: 12px 0 14px;
  flex-wrap:wrap;
}

input[type="search"], select{
  background:var(--panel);
  border:1px solid var(--border);
  color:var(--text);
  border-radius:14px;
  padding:11px 12px;
  outline:none;
  box-shadow: 0 6px 18px rgba(15, 23, 42, .05);
}
input[type="search"]:focus, select:focus{
  border-color: rgba(37,99,235,.45);
  box-shadow: var(--focusRing);
}

.list{ margin:10px 0 0; padding-left:18px; }