:root {
  --blue-900: #1e3a5f;
  --blue-700: #2563eb;
  --blue-500: #3b82f6;
  --blue-50: #eff6ff;
  --ink: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  font-size: 16px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-700); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 2.5vw, 1.9rem); margin-top: 0; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--blue-900); color: #fff; padding: .5rem 1rem; z-index: 100; }
.skip-link:focus { left: 0; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); position: sticky; top: 0; background: rgba(255,255,255,.95); backdrop-filter: blur(6px); z-index: 50; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; text-decoration: none; }
.brand img { height: 40px; width: auto; display: block; }
.main-nav { display: flex; align-items: center; gap: 1.5rem; }
.main-nav a { color: var(--ink); font-weight: 500; }
.main-nav a:hover { color: var(--blue-700); text-decoration: none; }
.nav-cta { background: var(--blue-700); color: #fff !important; padding: .5rem 1rem; border-radius: 999px; }
.nav-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: 0; cursor: pointer; padding: .5rem; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); }

/* Hero */
.hero { background: linear-gradient(135deg, var(--blue-900), var(--blue-700)); color: #fff; padding: 4.5rem 0; text-align: center; }
.hero .lead { font-size: 1.15rem; max-width: 640px; margin: 0 auto 1.5rem; opacity: .95; }
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn { display: inline-block; padding: .7rem 1.4rem; border-radius: 8px; font-weight: 600; cursor: pointer; border: 2px solid transparent; text-decoration: none; }
.btn-primary { background: #fff; color: var(--blue-900); }
.btn-primary:hover { background: var(--blue-50); text-decoration: none; }
.btn-outline { border-color: rgba(255,255,255,.6); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.1); text-decoration: none; }
.hero .btn-primary { background: #fff; }
.section .btn-primary, .admin-shell .btn-primary, .login-card .btn-primary { background: var(--blue-700); color: #fff; }
.section .btn-primary:hover, .login-card .btn-primary:hover { background: var(--blue-900); }

/* Sections */
.section { padding: 3.5rem 0; }
.section-alt { background: var(--bg-alt); }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1.25rem; margin-top: 1.5rem; }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); }
.card-link { color: inherit; }
.card-link:hover { border-color: var(--blue-500); text-decoration: none; }
.price, .price-big { color: var(--blue-700); font-weight: 700; }
.price-big { font-size: 1.5rem; }
.muted { color: var(--muted); font-size: .9rem; }
.tag { display: inline-block; background: var(--blue-50); color: var(--blue-700); padding: .2rem .6rem; border-radius: 999px; font-size: .8rem; font-weight: 600; margin-bottom: .5rem; }

.info-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; text-align: center; }

/* Catalogo */
.catalog-filters { display: flex; gap: .75rem; flex-wrap: wrap; margin: 1.5rem 0; }
.catalog-filters input, .catalog-filters select { padding: .6rem .8rem; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; }
.table-wrap { overflow-x: auto; }
.catalog-table { width: 100%; border-collapse: collapse; }
.catalog-table th, .catalog-table td { text-align: left; padding: .75rem; border-bottom: 1px solid var(--border); }
.catalog-table th { color: var(--muted); font-size: .85rem; text-transform: uppercase; letter-spacing: .03em; }
.empty-state { color: var(--muted); padding: 2rem 0; }
.link-more, .link-back { display: inline-block; margin-top: 1rem; font-weight: 600; }

/* Detail list */
.detail-list { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1.5rem; margin: 1.5rem 0; }
.detail-list dt { color: var(--muted); font-weight: 600; }
.detail-list dd { margin: 0; }

.feature-list { columns: 2; gap: 2rem; }
.feature-list li { margin-bottom: .5rem; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
.map-embed { width: 100%; height: 320px; border: 0; border-radius: var(--radius); }

/* Footer */
.site-footer { background: var(--blue-900); color: #e5f5f3; padding: 3rem 0 1rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }
.site-footer h3 { color: #fff; font-size: 1rem; }
.site-footer a { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 2rem; padding-top: 1rem; font-size: .85rem; opacity: .8; }

.whatsapp-float { position: fixed; bottom: 1.5rem; right: 1.5rem; background: #25D366; color: #fff !important; padding: .8rem 1.2rem; border-radius: 999px; box-shadow: var(--shadow); font-weight: 700; z-index: 60; }

/* Admin */
.admin-shell { display: flex; min-height: 100vh; }
.admin-sidebar { width: 220px; background: var(--blue-900); color: #fff; padding: 1.5rem 1rem; flex-shrink: 0; }
.admin-sidebar a { color: #d7f5f1; display: block; padding: .5rem .5rem; border-radius: 6px; }
.admin-sidebar a:hover, .admin-sidebar a.active { background: rgba(255,255,255,.12); text-decoration: none; }
.admin-sidebar h2 { color: #fff; font-size: 1.1rem; }
.admin-content { flex: 1; padding: 2rem; background: var(--bg-alt); }
.admin-content h1 { margin-bottom: 1.5rem; }
.admin-list { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.admin-list th, .admin-list td { text-align: left; padding: .7rem 1rem; border-bottom: 1px solid var(--border); }
.admin-list th { background: var(--bg-alt); font-size: .8rem; text-transform: uppercase; color: var(--muted); }
.admin-actions { display: flex; gap: .5rem; }
.admin-actions .btn { padding: .35rem .8rem; font-size: .85rem; }
.btn-danger { background: #dc2626; color: #fff; border: none; }
.btn-secondary { background: #fff; border: 1px solid var(--border); color: var(--ink); }
.admin-form { max-width: 620px; background: #fff; padding: 1.5rem; border-radius: var(--radius); box-shadow: var(--shadow); }
.admin-form label { display: block; font-weight: 600; margin: 1rem 0 .3rem; }
.admin-form input[type=text], .admin-form input[type=number], .admin-form input[type=password],
.admin-form input[type=date], .admin-form input[type=email], .admin-form textarea, .admin-form select {
  width: 100%; padding: .6rem .7rem; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; font-family: inherit;
}
.admin-form textarea { min-height: 90px; }
.admin-form .checkbox-row { display: flex; align-items: center; gap: .5rem; margin-top: 1rem; }
.admin-form .checkbox-row input { width: auto; }
.admin-form-actions { margin-top: 1.5rem; display: flex; gap: .75rem; }
.admin-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.login-shell { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg-alt); }
.login-card { background: #fff; padding: 2rem; border-radius: var(--radius); box-shadow: var(--shadow); width: 320px; }
.error-msg { color: #dc2626; margin-top: .5rem; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-top: 1rem; }
.stat-card { background: #fff; border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); text-align: center; }
.stat-card .num { font-size: 2rem; font-weight: 700; color: var(--blue-700); }

@media (max-width: 820px) {
  .admin-shell { flex-direction: column; }
  .admin-sidebar { width: 100%; }
  .nav-toggle { display: flex; }
  .main-nav { position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: flex-start; padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); display: none; gap: 1rem; }
  .main-nav.open { display: flex; }
  .contact-grid { grid-template-columns: 1fr; }
  .feature-list { columns: 1; }
}