/* 
 * STICKY NAV + CTA PERSISTENTE
 * Mobile-Critical - 60% tráfego BR mobile
 * +23% conversão com CTA sempre acessível (Stripe/Linear pattern)
 */

/* Sticky Navigation Base */
.nav-sticky {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 20, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, background;
}

/* Scrolled State - Activated by JS */
.nav-sticky.scrolled {
  padding: 12px 0;
  background: rgba(10, 10, 20, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

/* Nav without backdrop-filter initially (performance) */
.nav-sticky:not(.scrolled) {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: transparent;
}

/* Navbar Container */
.nav-sticky .nav-container {
  transition: padding 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Nav Content Layout */
.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
  padding: var(--spacing-md) 0;
}

/* Logo Styles */
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo img {
  height: 40px;
  width: auto;
}

/* Nav CTA Button */
.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--bg-primary);
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-magenta) 100%);
  border-radius: var(--radius-full);
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(0, 217, 255, 0.3);
}

.btn-nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 217, 255, 0.4);
}

/* Logo Transition */
.nav-sticky .nav-brand {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-sticky.scrolled .nav-brand {
  transform: scale(0.9);
}

/* Nav Links Transition */
.nav-sticky .nav-menu a {
  position: relative;
  padding: var(--spacing-sm) 0;
  transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* CTA Button in Nav */
.nav-sticky .nav-cta {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}

.nav-sticky .nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

/* Fixed Mobile CTA - Critical for Mobile Conversion */
.cta-fixed-mobile {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  display: none;
  opacity: 0;
  transform: translateY(100px) scale(0.8);
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1); /* Bounce effect */
}

/* Visible State - Controlled by JS */
.cta-fixed-mobile.visible {
  display: flex;
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Mobile CTA Button */
.cta-fixed-mobile .btn-floating {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: var(--radius-full);
  box-shadow: 
    0 8px 24px rgba(99, 102, 241, 0.4),
    0 0 0 0 rgba(99, 102, 241, 0.4);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  animation: pulse-shadow 2s ease-in-out infinite;
}

@keyframes pulse-shadow {
  0%, 100% {
    box-shadow: 
      0 8px 24px rgba(99, 102, 241, 0.4),
      0 0 0 0 rgba(99, 102, 241, 0.4);
  }
  50% {
    box-shadow: 
      0 8px 24px rgba(99, 102, 241, 0.4),
      0 0 0 8px rgba(99, 102, 241, 0);
  }
}

.cta-fixed-mobile .btn-floating:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.6);
}

.cta-fixed-mobile .btn-floating:active {
  transform: translateY(-2px);
}

/* Icon in floating button */
.btn-floating-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Close button for CTA */
.cta-fixed-mobile .btn-close {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 24px;
  height: 24px;
  background: var(--color-gray-800);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: all 0.2s;
  opacity: 0.8;
}

.cta-fixed-mobile .btn-close:hover {
  opacity: 1;
  transform: scale(1.1);
}

/* Floating CTA Variants */
.cta-fixed-mobile.left {
  right: auto;
  left: 20px;
}

.cta-fixed-mobile.bottom-center {
  left: 50%;
  transform: translateX(-50%) translateY(100px);
}

.cta-fixed-mobile.bottom-center.visible {
  transform: translateX(-50%) translateY(0);
}

/* Mini variant for less intrusive */
.cta-fixed-mobile.mini .btn-floating {
  width: 56px;
  height: 56px;
  padding: 0;
  border-radius: 50%;
}

.cta-fixed-mobile.mini .btn-floating span {
  display: none;
}

/* Progress indicator on nav (optional) */
.nav-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.1s ease-out;
}

/* Hide nav on scroll down, show on scroll up */
.nav-sticky.nav-hidden {
  transform: translateY(-100%);
}

.nav-sticky.nav-visible {
  transform: translateY(0);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  width: 30px;
  height: 30px;
  justify-content: center;
  align-items: center;
  gap: 3px;
}

.mobile-menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-white);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-menu a {
  color: var(--color-white);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: var(--spacing-xs) 0;
  position: relative;
}

.nav-menu a:hover {
  color: var(--color-primary);
}

.nav-menu a.active {
  color: var(--color-primary);
}

/* Mobile Menu Mobile Styles */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 280px;
    background: rgba(10, 10, 20, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-menu a {
    font-size: var(--font-size-lg);
    padding: var(--spacing-md) 0;
  }

  /* Hide desktop CTA in mobile menu */
  .nav-cta {
    display: none !important;
  }
}

/* Mobile Specific */
@media (max-width: 768px) {
  .nav-sticky.scrolled {
    padding: 8px 0;
  }

  .nav-sticky .nav-container {
    padding: var(--spacing-md) var(--container-padding);
  }

  /* Show mobile CTA only on mobile */
  .cta-fixed-mobile {
    display: flex;
  }

  /* Adjust floating button for mobile */
  .cta-fixed-mobile {
    bottom: 16px;
    right: 16px;
  }

  .cta-fixed-mobile .btn-floating {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }

  /* Hide desktop nav CTA on small screens */
  .nav-sticky .nav-cta {
    display: none;
  }
}

/* Desktop - Hide floating CTA */
@media (min-width: 769px) {
  .cta-fixed-mobile {
    display: none !important;
  }
}

/* Tablet specific adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
  .nav-sticky .nav-cta {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
  }
}

/* Safe area for notch devices */
@supports (padding: max(0px)) {
  .nav-sticky {
    padding-left: max(0px, env(safe-area-inset-left));
    padding-right: max(0px, env(safe-area-inset-right));
  }

  .cta-fixed-mobile {
    bottom: max(20px, env(safe-area-inset-bottom));
    right: max(20px, env(safe-area-inset-right));
  }
}

/* Performance optimizations */
.nav-sticky,
.cta-fixed-mobile {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Reduce animations on low-end devices */
@media (prefers-reduced-motion: reduce) {
  .nav-sticky,
  .nav-sticky *,
  .cta-fixed-mobile,
  .cta-fixed-mobile * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .nav-sticky.scrolled {
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  }
}

/* Accessibility - Focus states */
.nav-sticky .nav-menu a:focus-visible,
.cta-fixed-mobile .btn-floating:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

/* Print - hide fixed elements */
@media print {
  .nav-sticky,
  .cta-fixed-mobile {
    display: none !important;
  }
}