/* ============================================================================
   DURIVA SENTINEL - Estilos principales (sitio publico)
   ============================================================================ */

:root {
  --color-bg: #0a0e17;
  --color-surface: #111827;
  --color-surface-2: #1a2332;
  --color-border: #1e2d3d;
  --color-primary: #00d4aa;
  --color-primary-dark: #00a886;
  --color-accent: #3b82f6;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;
  --color-success: #10b981;
  --font-main: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

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

html { font-size: 16px; scroll-behavior: smooth; }

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

a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; height: auto; }

/* --- NAV --- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.nav-links { display: flex; gap: 1.5rem; list-style: none; }
.nav-links a { color: var(--color-text-muted); font-size: 0.9rem; font-weight: 500; }
.nav-links a:hover { color: var(--color-primary); }

.nav-cta {
  background: var(--color-primary);
  color: var(--color-bg);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--color-primary-dark); color: var(--color-bg); }

/* --- HERO --- */
.hero {
  text-align: center;
  padding: 6rem 2rem 4rem;
  max-width: 900px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero h1 span { color: var(--color-primary); }

.hero p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 650px;
  margin: 0 auto 2rem;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.hero-stat { text-align: center; }
.hero-stat .number { font-size: 2.5rem; font-weight: 800; color: var(--color-primary); display: block; }
.hero-stat .label { font-size: 0.85rem; color: var(--color-text-dim); }

/* --- BUTTONS --- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary { background: var(--color-primary); color: var(--color-bg); }
.btn-primary:hover { background: var(--color-primary-dark); color: var(--color-bg); }
.btn-secondary { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn-secondary:hover { background: var(--color-primary); color: var(--color-bg); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-sm { padding: 0.4rem 1rem; font-size: 0.85rem; }

/* --- SECTIONS --- */
.section {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 3rem;
  max-width: 600px;
}

/* --- CARDS --- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover { border-color: var(--color-primary); transform: translateY(-2px); }

.card-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.75rem; }
.card-text { color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.6; }
.card-tag {
  display: inline-block;
  background: rgba(0,212,170,0.1);
  color: var(--color-primary);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* --- PRICING --- */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
}

.pricing-card.featured { border-color: var(--color-primary); }
.pricing-card .price { font-size: 2.5rem; font-weight: 800; color: var(--color-primary); }
.pricing-card .period { color: var(--color-text-dim); font-size: 0.9rem; }
.pricing-features { list-style: none; margin: 1.5rem 0; text-align: left; }
.pricing-features li { padding: 0.4rem 0; color: var(--color-text-muted); font-size: 0.9rem; }
.pricing-features li::before { content: "\2713"; color: var(--color-primary); margin-right: 0.5rem; font-weight: 700; }

/* --- FOOTER --- */
.footer {
  padding: 3rem 2rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-dim);
  font-size: 0.85rem;
}

/* --- FORM --- */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--color-text-muted); }

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: var(--font-main);
  transition: border-color 0.2s;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea { min-height: 120px; resize: vertical; }

/* --- TABLE --- */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th { font-weight: 600; color: var(--color-text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; }
tr:hover td { background: var(--color-surface-2); }

/* --- BADGES --- */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background: rgba(16,185,129,0.15); color: var(--color-success); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--color-warning); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--color-danger); }
.badge-info { background: rgba(59,130,246,0.15); color: var(--color-accent); }

/* --- UTILITIES --- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero-stats { gap: 1.5rem; }
  .nav-links { display: none; }
  .section { padding: 3rem 1.25rem; }
  .cards { grid-template-columns: 1fr; }
}