:root {
  --bk-primary: #6366f1;
  --bk-primary-dark: #4f46e5;
  --bk-ink: #1d2939;
  --bk-muted: #667085;
  --bk-border: #e4e7ec;
  --bk-bg-alt: #f9fafb;
  --bk-accent: #eef2ff;
}

* { box-sizing: border-box; }

body {
  font-family: "Outfit", system-ui, sans-serif;
  color: var(--bk-ink);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .navbar-brand { font-family: "Outfit", system-ui, sans-serif; font-weight: 700; }

a { text-decoration: none; }

/* Nav */
.bk-nav {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bk-border);
  padding: 0.85rem 0;
}
.bk-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--bk-primary);
  color: #fff;
  font-size: 1.05rem;
}
.bk-brand-name { font-weight: 800; font-size: 1.25rem; color: var(--bk-ink); }
.bk-nav .nav-link { color: var(--bk-ink); font-weight: 500; }
.bk-nav .nav-link:hover { color: var(--bk-primary); }

/* Buttons */
.btn-bk-primary {
  background: var(--bk-primary);
  border: 1px solid var(--bk-primary);
  color: #fff;
  font-weight: 600;
  border-radius: 10px;
  padding: 0.65rem 1.4rem;
}
.btn-bk-primary:hover { background: var(--bk-primary-dark); border-color: var(--bk-primary-dark); color: #fff; }
.btn-bk-outline {
  background: #fff;
  border: 1px solid var(--bk-border);
  color: var(--bk-ink);
  font-weight: 600;
  border-radius: 10px;
  padding: 0.65rem 1.4rem;
}
.btn-bk-outline:hover { border-color: var(--bk-primary); color: var(--bk-primary); }
.btn-bk-ghost {
  background: transparent;
  border: none;
  color: var(--bk-ink);
  font-weight: 600;
  padding: 0.65rem 1.1rem;
}
.btn-bk-ghost:hover { color: var(--bk-primary); }

/* Eyebrow / labels */
.bk-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bk-accent);
  color: var(--bk-primary);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

/* Hero */
.bk-hero { padding: 6.5rem 0 4rem; background: linear-gradient(180deg, #fbfbff 0%, #ffffff 100%); }
.bk-h1 { font-size: clamp(2rem, 4vw, 2.85rem); line-height: 1.15; margin-bottom: 1.1rem; }
.bk-h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); margin-bottom: 0.75rem; }
.bk-lead { font-size: 1.1rem; color: var(--bk-muted); max-width: 34rem; }
.bk-lead-center { font-size: 1.05rem; color: var(--bk-muted); max-width: 34rem; margin: 0 auto; }
.bk-trust { font-size: 0.9rem; color: var(--bk-muted); }
.bk-trust i { color: #12b76a; margin-right: 0.35rem; }

/* Hero mock */
.bk-mock { position: relative; max-width: 420px; margin: 0 auto; }
.bk-chat-card {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: 18px;
  box-shadow: 0 20px 45px -20px rgba(17, 24, 39, 0.25);
  overflow: hidden;
}
.bk-chat-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  background: #075e54;
  color: #fff;
  padding: 0.85rem 1rem;
}
.bk-chat-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255,255,255,0.18);
  display: flex; align-items: center; justify-content: center;
}
.bk-chat-name { font-weight: 600; font-size: 0.92rem; }
.bk-chat-status { font-size: 0.72rem; opacity: 0.8; }
.bk-chat-body { background: #e5ded6; padding: 1rem; display: flex; flex-direction: column; gap: 0.5rem; min-height: 220px; }
.bk-bubble { max-width: 80%; padding: 0.55rem 0.8rem; border-radius: 10px; font-size: 0.86rem; line-height: 1.35; box-shadow: 0 1px 1px rgba(0,0,0,0.08); }
.bk-bubble-in { background: #fff; align-self: flex-start; border-top-left-radius: 2px; }
.bk-bubble-out { background: #d9fdd3; align-self: flex-end; border-top-right-radius: 2px; }
.bk-calendar-card {
  position: absolute;
  bottom: -1.75rem;
  right: -1.5rem;
  width: 200px;
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: 14px;
  box-shadow: 0 16px 32px -16px rgba(17, 24, 39, 0.3);
  padding: 0.85rem;
}
.bk-cal-head { display: flex; align-items: center; gap: 0.4rem; font-weight: 700; font-size: 0.85rem; margin-bottom: 0.6rem; color: var(--bk-primary); }
.bk-cal-row { display: flex; justify-content: space-between; font-size: 0.78rem; padding: 0.35rem 0; border-top: 1px solid var(--bk-border); }
.bk-cal-time { font-weight: 600; color: var(--bk-ink); }
.bk-cal-event { color: var(--bk-muted); }
.bk-cal-row-muted .bk-cal-event { color: #12b76a; }

@media (max-width: 991.98px) {
  .bk-calendar-card { position: static; margin-top: 1rem; width: 100%; }
}

/* Logos strip */
.bk-logos { padding: 1.5rem 0 0.5rem; }
.bk-logos-label { color: var(--bk-muted); font-size: 0.92rem; }

/* Sections */
.bk-section { padding: 5rem 0; }
.bk-section-alt { background: var(--bk-bg-alt); }

/* Feature cards */
.bk-feature-card {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: 16px;
  padding: 1.75rem;
  height: 100%;
}
.bk-feature-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--bk-accent);
  color: var(--bk-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}
.bk-feature-card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.bk-feature-card p { color: var(--bk-muted); font-size: 0.92rem; margin: 0; }

/* Steps */
.bk-step { text-align: center; padding: 1rem; }
.bk-step-num {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--bk-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  margin: 0 auto 1rem;
}
.bk-step h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.bk-step p { color: var(--bk-muted); font-size: 0.92rem; }

/* Pricing */
.bk-price-card {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: 18px;
  padding: 2rem;
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
}
/* El botón siempre pegado abajo, sin importar cuánto texto tenga cada
   tarjeta por encima (Base tiene una nota extra que Starter/Pro no
   tienen) — así las 3 quedan alineadas visualmente aunque el contenido
   varíe en longitud. */
.bk-price-card > .btn {
  margin-top: auto;
}
.bk-price-card-featured { border: 2px solid var(--bk-primary); box-shadow: 0 20px 40px -24px rgba(99, 102, 241, 0.45); }
.bk-price-badge {
  position: absolute;
  top: -13px; left: 50%;
  transform: translateX(-50%);
  background: var(--bk-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.85rem;
  border-radius: 999px;
}
.bk-price-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.bk-price { font-size: 2rem; font-weight: 800; margin-bottom: 1.25rem; }
.bk-price-list { list-style: none; padding: 0; margin: 0 0 1.5rem; display: flex; flex-direction: column; gap: 0.6rem; }
.bk-price-list li { font-size: 0.9rem; color: var(--bk-ink); }
.bk-price-list i { color: var(--bk-primary); margin-right: 0.4rem; }
.bk-price-note { font-size: 0.8rem; color: var(--bk-muted); margin: -0.75rem 0 1.25rem; }

/* CTA */
.bk-cta { padding: 5rem 0; background: var(--bk-primary); color: #fff; }
.bk-cta .bk-h2 { color: #fff; }
.bk-cta .bk-lead-center { color: rgba(255,255,255,0.85); margin-bottom: 1.75rem; }
.bk-cta .btn-bk-primary { background: #fff; color: var(--bk-primary); border-color: #fff; }
.bk-cta .btn-bk-primary:hover { background: rgba(255,255,255,0.9); }

/* Footer */
.bk-footer { background: #101828; color: #d0d5dd; padding: 4rem 0 2rem; }
.bk-footer .bk-brand-name { color: #fff; }
.bk-footer-text { color: #98a2b3; font-size: 0.9rem; max-width: 20rem; }
.bk-footer-title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; color: #98a2b3; margin-bottom: 1rem; }
.bk-footer-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.bk-footer-list a { color: #d0d5dd; font-size: 0.9rem; }
.bk-footer-list a:hover { color: #fff; }
.bk-footer-hr { border-color: #344054; margin: 2.5rem 0 1.5rem; }
.bk-footer-copy { color: #667085; font-size: 0.85rem; margin: 0; }