/* =============================================================================
   OSTP @echoShift — landing-styles.css v2.0
   Propósito: Estilos específicos para navegación y componentes de flujo
   Alcance: <nav>, breadcrumbs, CTAs contextuales, estado de flujo
   Convenciones: BEM, CSS Variables, Mobile-First
   ============================================================================= */

:root {
  /* Navegación */
  --nav-height: 56px;
  --nav-bg: rgba(6, 6, 10, 0.95);
  --nav-border: rgba(255, 255, 255, 0.08);
  --nav-link: var(--ostp-text-muted);
  --nav-link-hover: var(--ostp-cyan);
  --nav-link-active: var(--ostp-cyan);
  
  /* Breadcrumbs */
  --crumb-separator: '/';
  --crumb-color: var(--ostp-text-muted);
  --crumb-active: var(--ostp-cyan);
  
  /* CTA contextual */
  --cta-bg: transparent;
  --cta-border: var(--ostp-cyan);
  --cta-color: var(--ostp-cyan);
  --cta-hover-bg: var(--ostp-cyan);
  --cta-hover-color: var(--ostp-bg);
}

/* ===== NAV COMPONENT ===== */
.ostp-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--nav-border);
  transition: transform 0.3s ease, background 0.3s ease;
}

.ostp-nav--hidden {
  transform: translateY(-100%);
  pointer-events: none;
}

.ostp-nav--ribbon {
  background: rgba(6, 6, 10, 0.85);
  height: 48px;
}

/* Logo en nav */
.ostp-nav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Orbitron', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ostp-cyan);
  text-decoration: none;
  letter-spacing: 0.1em;
}

.ostp-nav__logo svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
}

/* Links de navegación */
.ostp-nav__links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.ostp-nav__link {
  font-size: 0.8rem;
  color: var(--nav-link);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 0;
  position: relative;
  transition: color 0.2s ease;
}

.ostp-nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--ostp-cyan);
  transition: width 0.2s ease;
}

.ostp-nav__link:hover,
.ostp-nav__link--active {
  color: var(--nav-link-active);
}

.ostp-nav__link:hover::after,
.ostp-nav__link--active::after {
  width: 100%;
}

/* CTA en nav */
.ostp-nav__cta {
  font-size: 0.8rem;
  padding: 6px 16px;
  background: var(--cta-bg);
  border: 1px solid var(--cta-border);
  color: var(--cta-color);
  border-radius: 20px;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.ostp-nav__cta:hover {
  background: var(--cta-hover-bg);
  color: var(--cta-hover-color);
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
}

/* ===== BREADCRUMBS ===== */
.ostp-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--crumb-color);
  padding: 8px 24px;
  background: rgba(6, 6, 10, 0.6);
  border-bottom: 1px solid var(--nav-border);
}

.ostp-crumb__item {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

.ostp-crumb__item:hover {
  color: var(--ostp-cyan);
}

.ostp-crumb__item--active {
  color: var(--crumb-active);
  font-weight: 600;
}

.ostp-crumb__separator {
  color: var(--nav-border);
  user-select: none;
}

/* ===== FLOW INDICATOR ===== */
.ostp-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px 0;
  background: rgba(123, 46, 218, 0.08);
  border-bottom: 1px solid var(--nav-border);
}

.ostp-flow__step {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--nav-border);
  transition: background 0.3s ease, transform 0.2s ease;
}

.ostp-flow__step--active {
  background: var(--ostp-cyan);
  transform: scale(1.2);
}

.ostp-flow__step--completed {
  background: var(--ostp-purple);
}

/* ===== CONTEXTUAL CTA BAR ===== */
.ostp-cta-bar {
  position: sticky;
  bottom: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: rgba(6, 6, 10, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--nav-border);
}

.ostp-cta-bar__text {
  font-size: 0.85rem;
  color: var(--ostp-text-muted);
}

.ostp-cta-bar__text strong {
  color: var(--ostp-cyan);
  font-family: 'Orbitron', monospace;
}

.ostp-cta-bar__actions {
  display: flex;
  gap: 12px;
}

.ostp-cta-bar__btn {
  font-size: 0.8rem;
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.ostp-cta-bar__btn--primary {
  background: var(--ostp-cyan);
  color: var(--ostp-bg);
}

.ostp-cta-bar__btn--primary:hover {
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.3);
  transform: translateY(-1px);
}

.ostp-cta-bar__btn--secondary {
  background: transparent;
  border: 1px solid var(--ostp-border);
  color: var(--ostp-text);
}

.ostp-cta-bar__btn--secondary:hover {
  border-color: var(--ostp-cyan);
  color: var(--ostp-cyan);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .ostp-nav {
    padding: 0 16px;
    height: 52px;
  }
  
  .ostp-nav__links {
    gap: 12px;
  }
  
  .ostp-nav__link {
    font-size: 0.75rem;
  }
  
  .ostp-crumb {
    padding: 6px 16px;
    font-size: 0.7rem;
    overflow-x: auto;
    white-space: nowrap;
  }
  
  .ostp-cta-bar {
    flex-direction: column;
    gap: 10px;
    padding: 10px 16px;
    align-items: stretch;
  }
  
  .ostp-cta-bar__actions {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}