/* ========================================
   NODOVITAL — Design System
   Palette: Red, Black, Yellow (Tech/Innovation)
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --red-500: #E5173F;
  --red-600: #C9122F;
  --red-700: #A00E26;
  --yellow-400: #FACC15;
  --yellow-500: #EAB308;
  --black-900: #0A0A0A;
  --black-800: #111111;
  --black-700: #1A1A1A;
  --black-600: #222222;
  --gray-400: #9CA3AF;
  --gray-300: #D1D5DB;
  --gray-200: #E5E7EB;
  --white: #FFFFFF;
  --gradient-main: linear-gradient(135deg, var(--red-500), var(--yellow-400));
  --gradient-dark: linear-gradient(180deg, var(--black-900) 0%, var(--black-800) 100%);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 40px rgba(229,23,63,0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--black-900);
  color: var(--gray-300);
  line-height: 1.6;
  overflow-x: hidden;
}

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(229,23,63,0.2); }
  50% { box-shadow: 0 0 40px rgba(229,23,63,0.4); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes grid-move {
  0% { transform: translateY(0); }
  100% { transform: translateY(40px); }
}

.comparison-card, .feature-card, .pricing-card, .custom-form {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-in {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* --- Typography --- */
h1, h2, h3, h4 { color: var(--white); line-height: 1.15; font-weight: 800; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; font-weight: 700; }
.text-gradient {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 32px;
  background: var(--gradient-main);
  color: var(--black-900);
  font-weight: 700; font-size: 1rem;
  border: none; border-radius: var(--radius-md);
  cursor: pointer; text-decoration: none;
  transition: var(--transition);
  animation: pulse-glow 3s infinite;
}
.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 32px rgba(229,23,63,0.4);
}
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 16px 32px;
  background: transparent;
  color: var(--gray-300);
  font-weight: 600; font-size: 1rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  cursor: pointer; text-decoration: none;
  transition: var(--transition);
}
.btn-secondary:hover {
  border-color: var(--red-500);
  color: var(--white);
  background: rgba(229,23,63,0.08);
}
.btn-full { width: 100%; justify-content: center; }
.btn-premium {
  background: linear-gradient(135deg, var(--yellow-400), var(--yellow-500));
}

/* --- Navbar --- */
#navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 16px 0;
  background: transparent;
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 10px 0;
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 1.4rem; font-weight: 800; color: var(--white);
  text-decoration: none; display: flex; align-items: center; gap: 6px;
}
.logo-icon { font-size: 1.6rem; }
.logo-img { height: 32px; width: auto; object-fit: contain; }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  color: var(--gray-400); text-decoration: none; font-weight: 500;
  font-size: 0.9rem; transition: var(--transition);
}
.nav-links a:hover { color: var(--white); }
.btn-cta-nav {
  padding: 10px 20px;
  background: var(--gradient-main);
  color: var(--black-900);
  font-weight: 700; font-size: 0.85rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition);
}
.btn-cta-nav:hover { transform: scale(1.05); }
.mobile-menu { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.mobile-menu span { width: 24px; height: 2px; background: var(--white); transition: var(--transition); display: block; }

/* --- Hero --- */
#hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  position: relative;
  padding: 120px 24px 80px;
  background: var(--gradient-dark);
  overflow: hidden;
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(229,23,63,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229,23,63,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: grid-move 8s linear infinite;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero-content { max-width: 800px; text-align: center; position: relative; z-index: 1; }
.hero-badge {
  display: inline-block; padding: 8px 20px;
  background: rgba(229,23,63,0.12); border: 1px solid rgba(229,23,63,0.25);
  border-radius: 999px; color: var(--red-500);
  font-size: 0.85rem; font-weight: 600;
  margin-bottom: 24px;
  animation: fadeUp 0.8s ease both;
}
#hero h1 { animation: fadeUp 0.8s 0.1s ease both; margin-bottom: 20px; }
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--gray-400); max-width: 600px; margin: 0 auto 36px;
  animation: fadeUp 0.8s 0.2s ease both;
}
.hero-subtitle strong { color: var(--yellow-400); }
.hero-ctas {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 48px;
  animation: fadeUp 0.8s 0.3s ease both;
}
.hero-stats {
  display: flex; align-items: center; justify-content: center; gap: 32px;
  animation: fadeUp 0.8s 0.4s ease both;
}
.stat { text-align: center; }
.stat-number {
  display: block; font-size: 1.6rem; font-weight: 800; color: var(--white);
}
.stat-label { font-size: 0.8rem; color: var(--gray-400); }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.1); }

/* --- Sections Common --- */
section { padding: 100px 24px; }
.section-container { max-width: 1100px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block; padding: 6px 16px;
  background: rgba(229,23,63,0.1); border: 1px solid rgba(229,23,63,0.2);
  border-radius: 999px; color: var(--red-500);
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; margin-bottom: 16px;
}
.section-desc {
  font-size: 1.1rem; color: var(--gray-400);
  max-width: 600px; margin: 16px auto 0;
}

/* --- Problema vs Solución --- */
#problema { background: var(--black-800); }
.comparison-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.comparison-card {
  padding: 36px; border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.06);
}
.comparison-card h3 { margin: 16px 0 20px; font-size: 1.3rem; }
.card-icon { font-size: 2rem; }
.card-problem {
  background: rgba(255,255,255,0.03);
}
.card-solution {
  background: linear-gradient(135deg, rgba(229,23,63,0.08), rgba(250,204,21,0.05));
  border-color: rgba(229,23,63,0.2);
  box-shadow: var(--shadow-glow);
}
.comparison-card ul { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.comparison-card li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.95rem; line-height: 1.5;
}
.x-mark { color: #EF4444; font-weight: 700; flex-shrink: 0; }
.check-mark { color: #22C55E; font-weight: 700; flex-shrink: 0; }

/* --- Features Grid --- */
#servicio { background: var(--black-900); }
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.feature-card {
  padding: 32px; border-radius: var(--radius-lg);
  background: var(--black-800);
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}
.feature-card:hover {
  border-color: rgba(229,23,63,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.feature-icon { font-size: 2rem; margin-bottom: 16px; display: block; }
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { font-size: 0.92rem; color: var(--gray-400); }

/* --- Pricing --- */
#precios { background: var(--black-800); }
.pricing-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  max-width: 900px; margin: 0 auto;
}
.pricing-card {
  border-radius: var(--radius-lg);
  background: var(--black-700);
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  transition: var(--transition);
}
.pricing-card:hover { transform: translateY(-4px); }
.card-premium {
  border-color: rgba(250,204,21,0.3);
  box-shadow: 0 0 40px rgba(250,204,21,0.1);
}
.pricing-header { padding: 32px 32px 24px; }
.plan-tag {
  display: inline-block; padding: 4px 12px;
  background: rgba(229,23,63,0.15); color: var(--red-500);
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  border-radius: 999px; margin-bottom: 12px;
}
.tag-premium {
  background: rgba(250,204,21,0.15); color: var(--yellow-400);
}
.pricing-header h3 { font-size: 1.5rem; margin-bottom: 6px; }
.plan-desc { font-size: 0.9rem; color: var(--gray-400); }
.pricing-body { padding: 0 32px 32px; }
.price-block {
  display: flex; flex-direction: column; gap: 12px;
  padding: 20px 0; margin-bottom: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.price-item { display: flex; justify-content: space-between; align-items: center; }
.price-label { font-size: 0.9rem; color: var(--gray-400); }
.price-value {
  font-size: 1.3rem; font-weight: 800; color: var(--white);
}
.price-value small { font-size: 0.7rem; font-weight: 500; color: var(--gray-400); }
.plan-features { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }
.plan-features li {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.9rem;
}

/* --- Form --- */
#formulario { background: var(--black-900); }
.custom-form {
  max-width: 800px; margin: 0 auto;
  background: var(--black-800);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 24px; }
.form-full { grid-column: 1 / -1; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--gray-300); margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 14px 16px;
  background: var(--black-700);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: inherit; font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray-400); opacity: 0.6; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--red-500);
  box-shadow: 0 0 0 3px rgba(229,23,63,0.15);
}
.form-group select { cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}
.form-group select option { background: var(--black-700); color: var(--white); }
.form-consent { margin-bottom: 24px; }
.checkbox-label {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.85rem; color: var(--gray-400); cursor: pointer;
}
.checkbox-label input[type="checkbox"] {
  width: 18px; height: 18px; margin-top: 2px;
  accent-color: var(--red-500); cursor: pointer; flex-shrink: 0;
}
.checkbox-label a { color: var(--red-500); }

/* --- Footer --- */
#footer {
  background: var(--black-800);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 60px 24px 30px;
}
.footer-container { max-width: 1100px; margin: 0 auto; }
.footer-top {
  display: flex; gap: 60px; margin-bottom: 40px;
}
.footer-brand { max-width: 320px; }
.footer-brand .nav-logo { margin-bottom: 12px; display: inline-flex; }
.footer-brand p { font-size: 0.9rem; color: var(--gray-400); margin-top: 12px; }
.footer-links { display: flex; gap: 48px; flex: 1; justify-content: flex-end; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--white); margin-bottom: 4px; }
.footer-col a { font-size: 0.85rem; color: var(--gray-400); text-decoration: none; transition: var(--transition); }
.footer-col a:hover { color: var(--red-500); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px; text-align: center;
}
.footer-bottom p { font-size: 0.8rem; color: var(--gray-400); }
.footer-legal { margin-top: 8px; font-size: 0.75rem; color: rgba(156,163,175,0.6); max-width: 700px; margin-left: auto; margin-right: auto; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; width: 100%;
    flex-direction: column; background: rgba(10,10,10,0.97); padding: 20px 24px; gap: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .nav-links.active { display: flex; }
  .btn-cta-nav { display: none; }
  .mobile-menu { display: flex; }
  .mobile-menu.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .mobile-menu.active span:nth-child(2) { opacity: 0; }
  .mobile-menu.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 40px; height: 1px; }

  .comparison-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 32px; }
  .footer-links { flex-direction: column; gap: 24px; justify-content: flex-start; }
}