:root {
  --bg: #0b1220;
  --bg-soft: #111a2e;
  --surface: #ffffff;
  --surface-alt: #f4f6fb;
  --text: #0f172a;
  --text-soft: #475569;
  --text-inverse: #e7ecfb;
  --text-inverse-soft: #9fb0d1;
  --accent: #3d8bff;
  --accent-dark: #2563eb;
  --border: #1e2a45;
  --border-light: #e2e8f0;
  --radius: 14px;
  font-size: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--surface);
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-inverse);
}
.brand .brand-mark { width: 28px; height: 28px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  color: var(--text-inverse-soft);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav-links a:hover { color: var(--text-inverse); }
.nav-actions { display: flex; gap: 12px; align-items: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { opacity: 0.92; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost { background: transparent; color: var(--text-inverse); border-color: var(--border); }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  color: var(--text-inverse);
  padding: 88px 0 96px;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.1;
  margin: 0 0 20px;
  font-weight: 800;
}
.hero p.lead {
  font-size: 1.1rem;
  color: var(--text-inverse-soft);
  margin: 0 0 32px;
  max-width: 46ch;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 28px;
  color: var(--text);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5);
}
.hero-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.hero-card p { margin: 0 0 18px; color: var(--text-soft); font-size: 0.92rem; }
.hero-stat-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.hero-stat { background: var(--surface-alt); border-radius: 10px; padding: 14px 16px; }
.hero-stat strong { display: block; font-size: 1.3rem; }
.hero-stat span { color: var(--text-soft); font-size: 0.82rem; }

/* Section generic */
section { padding: 88px 0; }
.section-head { max-width: 640px; margin: 0 0 48px; }
.section-tag {
  color: var(--accent-dark);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); margin: 0 0 14px; }
.section-head p { color: var(--text-soft); font-size: 1.05rem; margin: 0; }
.section-alt { background: var(--surface-alt); }

/* Feature grid */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 28px;
}
.card .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(61, 139, 255, 0.12);
  color: var(--accent-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}
.card h3 { margin: 0 0 8px; font-size: 1.08rem; }
.card p { margin: 0; color: var(--text-soft); font-size: 0.94rem; }

/* Stats */
.stats {
  background: var(--bg);
  color: var(--text-inverse);
}

/* CTA */
.cta {
  background: linear-gradient(120deg, var(--accent-dark), var(--accent));
  color: #fff;
  border-radius: 24px;
  padding: 56px;
  margin: 0 24px;
  text-align: center;
}
.cta h2 { margin: 0 0 12px; font-size: clamp(1.5rem, 3vw, 2rem); }
.cta p { margin: 0 0 28px; color: rgba(255,255,255,0.9); }
.cta .btn-ghost { border-color: rgba(255,255,255,0.5); color: #fff; }
.cta .btn-primary { background: #fff; color: var(--accent-dark); }

/* Footer */
footer.site-footer {
  background: var(--bg);
  color: var(--text-inverse-soft);
  padding: 56px 0 28px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-grid h4 { color: var(--text-inverse); margin: 0 0 14px; font-size: 0.95rem; }
.footer-grid a { display: block; margin-bottom: 10px; font-size: 0.9rem; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* Auth pages (cliente/admin) */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 24px;
}
.auth-box {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.5);
}
.auth-box .brand { color: var(--text); justify-content: center; margin-bottom: 8px; }
.auth-box h1 { text-align: center; font-size: 1.3rem; margin: 0 0 4px; }
.auth-box p.subtitle { text-align: center; color: var(--text-soft); margin: 0 0 28px; font-size: 0.92rem; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; }
.field input {
  width: 100%;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-light);
  font-size: 0.95rem;
}
.field input:focus { outline: 2px solid var(--accent); border-color: transparent; }
.alert {
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.88rem;
  margin-bottom: 18px;
}
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-success { background: #dcfce7; color: #166534; }
.auth-back { text-align: center; margin-top: 20px; font-size: 0.88rem; }
.auth-back a { color: var(--accent-dark); font-weight: 600; }

/* Simple/blank pages */
.blank-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}
.blank-page h1 { font-size: 2rem; margin-bottom: 8px; }
.blank-page p { color: var(--text-soft); margin-bottom: 24px; }

@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta { padding: 36px 24px; margin: 0 16px; }
}