/* --- SubmitFlow Landing · Diseño moderno --- */
:root {
  --bg: #f8fafc;
  --bg-elevated: #ffffff;
  --bg-hero: #0f172a;
  --ink: #0f172a;
  --ink-muted: #475569;
  --ink-hero: #f1f5f9;
  --border: #e2e8f0;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-light: #eef2ff;
  --accent-glow: rgba(99, 102, 241, 0.4);
  --radius: 16px;
  --radius-sm: 12px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow: 0 4px 14px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 40px -12px rgba(15, 23, 42, 0.12), 0 8px 16px -8px rgba(15, 23, 42, 0.08);
  --shadow-glow: 0 0 40px -8px var(--accent-glow);
  --font: "Plus Jakarta Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --space: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --container-max: 72rem;
  --container-padding: 1.5rem;
}

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

html {
  font-size: 100%;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  background: var(--bg);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* --- Header (oscuro, mismo tono que hero) --- */
.header {
  width: 100%;
  background: #0f172a;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-weight: 800;
  font-size: 1.4rem;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.03em;
  transition: color 0.2s, opacity 0.2s;
}

.logo:hover {
  color: #a5b4fc;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: #94a3b8;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

.nav-link:hover {
  color: #fff;
}

.nav-link--cta {
  padding: 0.65rem 1.4rem;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: #fff;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.5);
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-link--cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.55);
  color: #fff;
}

/* --- Hero (gradiente indigo/violeta muy visible) --- */
.hero {
  position: relative;
  width: 100%;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  background: linear-gradient(135deg, #312e81 0%, #1e1b4b 30%, #0f172a 70%, #020617 100%);
  color: var(--ink-hero);
  overflow: hidden;
}

@media (min-width: 900px) {
  .hero {
    padding-top: 5.5rem;
    padding-bottom: 5.5rem;
  }
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 100% 80% at 20% 0%, rgba(99, 102, 241, 0.35), transparent 50%),
    radial-gradient(ellipse 80% 60% at 80% 100%, rgba(139, 92, 246, 0.25), transparent 50%),
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(99, 102, 241, 0.12), transparent 60%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    min-height: 32rem;
  }
}

.hero-content {
  position: relative;
}

.hero-label {
  display: inline-block;
  margin: 0 0 var(--space-lg);
  padding: 0.4rem 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #c7d2fe;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: 999px;
}

.hero-title {
  position: relative;
  margin: 0 0 var(--space);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: #fff;
  max-width: 14ch;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-desc {
  position: relative;
  margin: 0 0 var(--space-lg);
  font-size: 1.125rem;
  color: #94a3b8;
  max-width: 40ch;
  line-height: 1.7;
}

.hero-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-endpoint-preview {
  width: 100%;
  max-width: 22rem;
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
}

.hero-endpoint-label {
  display: block;
  margin-bottom: 0.6rem;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #94a3b8;
}

.hero-endpoint-code {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 500;
  color: #e2e8f0;
  word-break: break-all;
}

.hero-endpoint-code em {
  color: #a5b4fc;
  font-style: normal;
  font-weight: 500;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.6rem;
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}

.btn--primary {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: #fff;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.5);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.55);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--ink-hero);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.35);
}

.hero .btn--secondary {
  background: transparent;
  color: #e2e8f0;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero .btn--secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}

.btn--large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn--outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn--outline:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* --- Pillars (fondo alterno para contraste) --- */
.pillars {
  width: 100%;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  background: #f1f5f9;
}

.pillars-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  text-align: center;
}

.pillar {
  padding: var(--space-xl);
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s, transform 0.2s;
}

.pillar:hover {
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
  transform: translateY(-4px);
}

.pillar-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto var(--space-lg);
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: #fff;
  border-radius: 14px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.pillar-title {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.pillar-desc {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--ink-muted);
  line-height: 1.65;
  max-width: 22ch;
  margin-left: auto;
  margin-right: auto;
}

/* --- Section titles --- */
.section-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.6rem, 3.5vw, 2rem);
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.03em;
}

.section-desc {
  margin: 0 0 var(--space-xl);
  font-size: 1.0625rem;
  color: var(--ink-muted);
  max-width: 40ch;
  line-height: 1.6;
}

/* --- Features (fondo blanco, cards con borde izquierdo acento) --- */
.features {
  width: 100%;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-2xl);
  background: #fff;
}

.features .container {
  padding-top: 0;
  padding-bottom: 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: var(--space-xl);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
  transition: box-shadow 0.25s, transform 0.2s;
}

.feature-card:hover {
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
  transform: translateY(-4px);
}

.feature-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: var(--space);
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.feature-card-title {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink);
}

.feature-card-text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

/* --- Code section (fondo gris para alternar) --- */
.code-section {
  width: 100%;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-3xl);
  background: #f1f5f9;
}

.code-section .container {
  padding-top: 0;
  padding-bottom: 0;
}

.code-section-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.code-section-header {
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
}

.code-section-title {
  margin: 0 0 0.25rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink);
}

.code-section-desc {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--ink-muted);
}

.code-section-desc code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 0.2em 0.5em;
  background: var(--border);
  border-radius: 6px;
}

.code-block-pre {
  margin: 0;
  padding: var(--space-xl);
  background: #0f172a;
  color: #e2e8f0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.75;
}

.code-tag {
  color: #93c5fd;
}

.code-attr {
  color: #fcd34d;
}

.code-string {
  color: #86efac;
}

/* --- Plans --- */
.plans-section {
  width: 100%;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.plans-section .container {
  padding-top: 0;
  padding-bottom: 0;
}

.plans-section .section-title {
  text-align: center;
}

.plans-section .section-desc {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  align-items: stretch;
}

.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s, border-color 0.25s, transform 0.2s;
}

.plan-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.plan-card--free:hover {
  border-color: #cbd5e1;
}

.plan-card--elite {
  border: 2px solid var(--accent);
  background: linear-gradient(180deg, #fff 0%, #faf5ff 100%);
  box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.2), 0 8px 24px rgba(99, 102, 241, 0.15);
}

.plan-card--elite:hover {
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.25), 0 0 0 1px rgba(99, 102, 241, 0.3);
}

.plan-card-badge {
  position: absolute;
  top: -0.5rem;
  right: var(--space-lg);
  padding: 0.35rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
  color: white;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.plan-card-name {
  margin: 0 0 0.25rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.plan-card-price {
  margin: 0 0 var(--space-lg);
  font-size: 1rem;
  color: var(--ink-muted);
}

.plan-card-amount {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--ink);
}

.plan-card-features {
  margin: 0 0 var(--space-lg);
  padding: 0;
  list-style: none;
  font-size: 0.9375rem;
  color: var(--ink-muted);
  line-height: 1.85;
}

.plan-card-features li {
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.4rem;
}

.plan-card-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 0.35rem;
  height: 0.35rem;
  background: var(--accent);
  border-radius: 50%;
}

.plan-card-cta {
  display: block;
  width: 100%;
  text-align: center;
  margin-top: auto;
  padding: 0.85rem 1.5rem;
}

/* --- CTA --- */
.cta-section {
  width: 100%;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.cta-section .container {
  padding-top: 0;
  padding-bottom: 0;
}

.cta-card {
  background: linear-gradient(135deg, #4f46e5 0%, #6366f1 40%, #8b5cf6 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: 0 24px 48px -12px rgba(99, 102, 241, 0.45), 0 0 0 1px rgba(255,255,255,0.1);
}

.cta-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  font-weight: 800;
  color: white;
  letter-spacing: -0.02em;
}

.cta-desc {
  margin: 0 0 var(--space-lg);
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.92);
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.cta-card .btn--primary {
  background: white;
  color: var(--accent);
}

.cta-card .btn--primary:hover {
  background: #f1f5f9;
  color: var(--accent-hover);
}

/* --- Footer --- */
.footer {
  width: 100%;
  background: #0f172a;
  color: #94a3b8;
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.footer-inner {
  text-align: center;
}

.footer-brand {
  margin: 0 0 0.25rem;
  font-weight: 700;
  font-size: 1rem;
  color: #e2e8f0;
}

.footer-tagline {
  margin: 0;
  font-size: 0.875rem;
  color: #64748b;
}

.footer-links {
  margin: 1rem 0 0;
  font-size: 0.8125rem;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #e2e8f0;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .pillars-inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .pillar-desc {
    max-width: none;
  }

  .plans-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1.25rem;
  }

  .hero {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }

  .hero-inner {
    min-height: 0;
  }

  .hero-title {
    max-width: none;
  }

  .hero-desc {
    max-width: none;
  }

  .hero-endpoint-preview {
    max-width: none;
    padding: var(--space-lg) var(--space-xl);
  }

  .hero-endpoint-code {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn--primary,
  .btn--secondary {
    width: 100%;
    max-width: 20rem;
  }

  .header-inner {
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
  }
}

@media (max-width: 480px) {
  .nav {
    gap: var(--space);
  }

  .plan-card {
    padding: var(--space-lg);
  }

  .plan-card-badge {
    right: var(--space);
  }
}