:root {
  --bg-base: #0a0e17;
  --bg-surface: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(24, 34, 53, 0.9);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(0, 212, 184, 0.4);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --teal-500: #00d4b8;
  --teal-400: #2dd4bf;
  --cyan-400: #38bdf8;
  --rose-400: #fb7185;
  --blue-400: #60a5fa;

  --font-display: 'Outfit', -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.brand-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: #fff;
}

.brand-sub {
  font-size: 0.875rem;
  color: var(--teal-400);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--teal-400);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--teal-400);
  animation: pulse 2s infinite;
}

.pulse-dot-sm {
  width: 6px;
  height: 6px;
  background-color: var(--teal-400);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--teal-400);
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.2); }
  100% { opacity: 1; transform: scale(1); }
}

/* Hero Section */
.hero-section {
  padding: 4rem 0 2rem;
  text-align: center;
}

.hero-content {
  max-width: 820px;
  margin: 0 auto 2.5rem;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--teal-400);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: #fff;
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-lead strong {
  color: var(--text-main);
}

/* Filtros */
.filters-bar {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.filter-btn.active {
  background: var(--teal-500);
  color: #0b0f19;
  border-color: var(--teal-500);
  font-weight: 700;
}

/* Grid de Demos */
.main-content {
  flex: 1;
  padding-bottom: 5rem;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.demo-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(8px);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.demo-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
}

.badge-cyan { background: rgba(56, 189, 248, 0.12); color: var(--cyan-400); border: 1px solid rgba(56, 189, 248, 0.25); }
.badge-rose { background: rgba(251, 113, 133, 0.12); color: var(--rose-400); border: 1px solid rgba(251, 113, 133, 0.25); }
.badge-blue { background: rgba(96, 165, 250, 0.12); color: var(--blue-400); border: 1px solid rgba(96, 165, 250, 0.25); }

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--teal-400);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.25rem;
}

.card-tagline {
  font-size: 0.875rem;
  color: var(--teal-400);
  font-weight: 500;
  margin-bottom: 1rem;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.card-highlights {
  background: rgba(0, 0, 0, 0.25);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex: 1;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.h-icon {
  font-size: 1.125rem;
  line-height: 1.4;
}

.highlight-item strong {
  display: block;
  font-size: 0.875rem;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.highlight-item p {
  font-size: 0.8125rem;
  color: var(--text-dim);
  line-height: 1.45;
}

.card-footer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--teal-500);
  color: #0b0f19;
  gap: 0.5rem;
}

.btn-primary:hover {
  background: var(--teal-400);
  transform: translateY(-1px);
}

.arrow {
  transition: transform 0.2s ease;
}

.btn-primary:hover .arrow {
  transform: translateX(3px);
}

.fqdn-tag {
  font-size: 0.75rem;
  font-family: monospace;
  color: var(--text-dim);
  text-align: center;
}

/* Banner Comercial */
.cta-banner {
  background: linear-gradient(135deg, rgba(17, 24, 39, 0.9) 0%, rgba(15, 23, 42, 0.8) 100%);
  border: 1px solid var(--border-focus);
  border-radius: 20px;
  padding: 3rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-content {
  max-width: 680px;
  margin: 0 auto;
}

.eyebrow-accent {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--teal-400);
  margin-bottom: 0.75rem;
}

.cta-banner h3 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: #fff;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-banner p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-cta {
  background: #25d366;
  color: #fff;
  font-weight: 700;
}

.btn-cta:hover {
  background: #20ba59;
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  font-size: 0.875rem;
  color: var(--text-dim);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links a {
  color: var(--teal-400);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .demo-grid {
    grid-template-columns: 1fr;
  }
  .header-inner, .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}