:root {
  --primary: #4f46e5;
  --primary-2: #7c3aed;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --chip-bg: #ffffff;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-hover: 0 4px 8px rgba(15, 23, 42, .08), 0 16px 40px rgba(79, 70, 229, .14);
}

:root[data-theme="dark"] {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --border: #334155;
  --chip-bg: #1e293b;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .3);
  --shadow-hover: 0 4px 8px rgba(0, 0, 0, .35), 0 16px 40px rgba(0, 0, 0, .45);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { overflow-x: clip; scrollbar-gutter: stable; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }

/* ---------- HEADER ---------- */
.header {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  border-radius: 1rem;
  padding: 2.2rem 2rem;
  margin: 1.25rem auto 0;
  max-width: 1080px;
  position: relative;
  overflow: hidden;
}
.header::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 200px at 85% -10%, rgba(255,255,255,.18), transparent 70%);
  pointer-events: none;
}
.header h1 { font-size: 1.75rem; font-weight: 800; line-height: 1.25; letter-spacing: -.01em; }
.header p { margin-top: .55rem; font-size: .98rem; opacity: .9; max-width: 60ch; }

.theme-toggle {
  position: absolute;
  top: 1.1rem; right: 1.1rem;
  width: 40px; height: 40px;
  border: 1px solid rgba(255,255,255,.35);
  background: rgba(255,255,255,.12);
  color: #fff;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  display: grid; place-items: center;
  transition: background .15s ease;
}
.theme-toggle:hover { background: rgba(255,255,255,.24); }

/* ---------- SECTION TITLES ---------- */
.section-title {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
  margin: 2.2rem 0 1rem;
}

/* ---------- CTA metodología ---------- */
.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 1.75rem;
  padding: 1.6rem 1.8rem;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--primary) 30%, var(--border));
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--primary) 10%, var(--card)),
      color-mix(in srgb, var(--primary-2) 10%, var(--card)));
  box-shadow: var(--shadow);
}
.cta-body { flex: 1 1 340px; }
.cta-eyebrow {
  display: inline-block;
  font-size: .82rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: .4rem;
}
.cta h2 { font-size: 1.35rem; font-weight: 800; letter-spacing: -.01em; }
.cta p { margin-top: .5rem; font-size: .95rem; color: var(--text); max-width: 68ch; }
.cta-actions { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }

/* ---------- CONTROLS ---------- */
.controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.3rem;
}
.filters { display: flex; flex-direction: column; gap: .6rem; }
.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
}
.filter-label {
  flex: 0 0 3.4rem;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--muted);
}
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
  border: 1px solid var(--border);
  background: var(--chip-bg);
  color: var(--muted);
  border-radius: 999px;
  padding: .38rem .85rem;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s ease;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}
.chip:hover { border-color: var(--primary); color: var(--text); }
.chip.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.chip .count {
  font-size: .72rem;
  opacity: .75;
  font-weight: 700;
}

.search {
  align-self: flex-start;
  width: 100%;
  max-width: 320px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: .5rem 1rem;
  font-size: .9rem;
  font-family: inherit;
}
.search:focus { outline: 2px solid var(--primary); outline-offset: 1px; }

/* ---------- GRID ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.15rem;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.35rem 1.4rem 1.2rem;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--accent, var(--primary));
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }

.tag-row { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; }
.area-badge {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .74rem; font-weight: 700;
  padding: .2rem .55rem;
  border-radius: 999px;
  color: var(--accent, var(--primary));
  background: color-mix(in srgb, var(--accent, var(--primary)) 12%, transparent);
}
.meta-badge {
  font-size: .72rem; font-weight: 600;
  color: var(--muted);
  padding: .2rem .5rem;
  border: 1px solid var(--border);
  border-radius: 999px;
}

.card h3 { font-size: 1.12rem; font-weight: 700; margin-top: .7rem; letter-spacing: -.01em; }
.card .sub { color: var(--muted); font-size: .85rem; margin-top: .1rem; }
.card .desc { font-size: .9rem; margin-top: .65rem; color: var(--text); flex: 1; }

.links { display: flex; gap: .55rem; margin-top: 1.05rem; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .85rem; font-weight: 600;
  padding: .48rem .95rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all .15s ease;
}
.btn-lg { font-size: .95rem; padding: .62rem 1.3rem; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-2); border-color: var(--primary-2); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--text); border-color: var(--primary); }

.empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  padding: 3rem 1rem;
  font-size: .95rem;
}

/* ---------- FOOTER ---------- */
.footer {
  margin: 3rem 0 2.5rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .85rem;
  text-align: center;
  line-height: 1.8;
}
.footer a { color: var(--primary); font-weight: 600; }
.footer a:hover { text-decoration: underline; }

@media (max-width: 640px) {
  .header { padding: 1.8rem 1.4rem; }
  .header h1 { font-size: 1.4rem; }
  .controls { flex-direction: column; align-items: stretch; }
  .search { max-width: none; }
}