/* ---------- Design tokens ---------- */
:root {
  --color-primary: #0F172A;
  --color-primary-foreground: #FFFFFF;
  --color-accent: #0369A1;
  --color-accent-hover: #075985;
  --color-accent-soft: #E0F2FE;
  --color-background: #FFFFFF;
  --color-surface: #F8FAFC;
  --color-foreground: #0F172A;
  --color-muted-foreground: #64748B;
  --color-border: #E2E8F0;
  --color-success: #059669;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --container-width: 1160px;
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
  --transition: 180ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #0B1220;
    --color-surface: #111A2C;
    --color-foreground: #F1F5F9;
    --color-muted-foreground: #94A3B8;
    --color-border: #22304A;
    --color-accent: #38BDF8;
    --color-accent-hover: #7DD3FC;
    --color-accent-soft: #10243D;
    --color-primary: #0F172A;
    --color-primary-foreground: #F8FAFC;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

/* ---------- Reset ---------- */
* , *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * , *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-background);
  color: var(--color-foreground);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

h1, h2, h3 { line-height: 1.2; font-weight: 700; margin: 0 0 var(--space-4); letter-spacing: -0.01em; }
h1 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 var(--space-4); }

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul, ol { margin: 0; padding: 0; list-style: none; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  z-index: 200;
  border-radius: var(--radius-sm);
}
.skip-link:focus { left: var(--space-4); top: var(--space-4); }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0 var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  touch-action: manipulation;
}
.btn:active { transform: scale(0.98); }

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

.btn-ghost {
  background: transparent;
  color: var(--color-foreground);
  border-color: var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline:hover { background: var(--color-accent-soft); }

.btn-sm { min-height: 40px; padding: 0 var(--space-4); font-size: 0.875rem; }
.btn-lg { min-height: 52px; padding: 0 var(--space-8); font-size: 1rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-background) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-foreground);
  font-weight: 700;
  font-size: 1.05rem;
}
.brand:hover { color: var(--color-foreground); }

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 800;
  font-size: 0.95rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.main-nav a {
  color: var(--color-foreground);
  font-weight: 500;
  font-size: 0.925rem;
}
.main-nav a:hover { color: var(--color-accent); }

.header-actions { display: flex; align-items: center; gap: var(--space-4); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--color-border);
  cursor: pointer;
}
.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-foreground);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: var(--space-24) 0 var(--space-16);
  background:
    radial-gradient(circle at 85% 0%, var(--color-accent-soft), transparent 55%),
    var(--color-background);
}
.hero-inner { max-width: 800px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0 0 var(--space-4);
}
.hero-lead {
  font-size: 1.15rem;
  color: var(--color-muted-foreground);
  max-width: 620px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin: var(--space-8) 0 var(--space-12);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}
.trust-row li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9rem;
  color: var(--color-muted-foreground);
  font-weight: 500;
}
.icon { width: 20px; height: 20px; color: var(--color-accent); flex-shrink: 0; }

/* ---------- Sections ---------- */
.section { padding: var(--space-24) 0; }
.section-alt { background: var(--color-surface); }
.section-head { max-width: 640px; margin-bottom: var(--space-12); }
.section-lead { color: var(--color-muted-foreground); font-size: 1.05rem; }

.grid { display: grid; gap: var(--space-6); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
}
.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.card-icon svg { width: 24px; height: 24px; }

.check-list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--color-foreground);
  font-size: 0.95rem;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--color-success);
}

/* ---------- Process ---------- */
.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}
.process-step { position: relative; }
.process-num {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.process-step p { color: var(--color-muted-foreground); font-size: 0.95rem; }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-16);
  align-items: start;
}
.about-avatar {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  font-weight: 800;
}
.about-copy .check-list li { margin-bottom: var(--space-3); }

/* ---------- Pricing ---------- */
.pricing-card { display: flex; flex-direction: column; }
.pricing-sub { color: var(--color-muted-foreground); font-size: 0.9rem; }
.pricing-card .check-list { flex: 1; margin-bottom: var(--space-6); }
.pricing-card-featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1.5px var(--color-accent), var(--shadow-card);
  position: relative;
}
.pricing-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  margin-bottom: var(--space-4);
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; display: flex; flex-direction: column; gap: var(--space-3); }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  background: var(--color-background);
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  padding: var(--space-2) 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--color-muted-foreground); padding-top: var(--space-2); margin-bottom: 0; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--color-primary);
  color: var(--color-primary-foreground);
  padding: var(--space-16) 0;
}
.cta-banner-inner { max-width: 620px; text-align: center; margin: 0 auto; }
.cta-banner h2 { color: #fff; }
.cta-banner p { color: rgba(255,255,255,0.75); margin-bottom: var(--space-8); }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}
.contact-direct {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  margin-top: var(--space-2);
}
a.contact-direct:first-of-type {
  background: #25D366;
  color: #fff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  min-height: 48px;
}
a.contact-direct:first-of-type:hover { background: #1EBE5A; color: #fff; }
.contact-direct-secondary {
  display: flex;
  margin-top: var(--space-4);
  color: var(--color-muted-foreground);
  font-weight: 500;
}
.contact-direct-secondary:hover { color: var(--color-accent); }

.whatsapp-fab {
  position: fixed;
  right: var(--space-6);
  bottom: var(--space-6);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  z-index: 90;
  transition: transform var(--transition), background var(--transition);
}
.whatsapp-fab:hover { background: #1EBE5A; color: #fff; transform: scale(1.06); }
.whatsapp-fab svg { width: 28px; height: 28px; }

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.form-row { display: flex; flex-direction: column; gap: var(--space-2); }
.form-row label { font-weight: 600; font-size: 0.9rem; }
.form-row input,
.form-row select,
.form-row textarea {
  font: inherit;
  font-size: 1rem;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-background);
  color: var(--color-foreground);
  min-height: 48px;
  transition: border-color var(--transition);
}
.form-row textarea { min-height: 110px; resize: vertical; }
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--color-accent);
  outline: none;
}
.form-note { font-size: 0.9rem; color: var(--color-success); min-height: 1.2em; margin: 0; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-16);
  background: var(--color-surface);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-8);
  padding-bottom: var(--space-12);
}
.footer-brand p { color: var(--color-muted-foreground); margin-top: var(--space-2); font-size: 0.9rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: var(--space-6); }
.footer-nav a { color: var(--color-muted-foreground); font-size: 0.9rem; }
.footer-nav a:hover { color: var(--color-accent); }
.footer-email { font-weight: 600; }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}
.footer-bottom p { margin: 0; color: var(--color-muted-foreground); font-size: 0.85rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .process-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }

  .site-header.nav-open .main-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-6) var(--space-6);
    gap: var(--space-2);
  }
  .site-header.nav-open .main-nav a {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
  }
  .header-actions .btn-sm { display: none; }
}

@media (max-width: 760px) {
  .grid-3 { grid-template-columns: 1fr; }
  .process-list { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-avatar { width: 96px; height: 96px; font-size: 2.2rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero { padding: var(--space-16) 0 var(--space-12); }
  .section { padding: var(--space-16) 0; }
}