/* ============================================================
   SMART WEB DESIGN — Navbar & Top Bar
   ============================================================ */

/* --- Top Bar --- */
.top-bar {
  background: var(--color-surface-1);
  border-bottom: 1px solid var(--color-border);
  padding-block: 0.5rem;
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: calc(var(--z-sticky) + 1);
  transition: transform var(--ease-smooth);
}

.top-bar.hidden { transform: translateY(-100%); }

.top-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.top-bar__contact {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.top-bar__contact a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-text-secondary);
  transition: color var(--ease-fast);
}
.top-bar__contact a:hover { color: var(--color-accent); }
.top-bar__contact i { font-size: 0.95rem; }

.top-bar__right {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.top-bar__social {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.top-bar__social a {
  color: var(--color-text-muted);
  font-size: 1rem;
  transition: color var(--ease-fast);
}
.top-bar__social a:hover { color: var(--color-accent); }

.top-bar__whatsapp {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.75rem;
  background: rgba(37, 211, 102, 0.1);
  border: 1px solid rgba(37, 211, 102, 0.3);
  border-radius: var(--radius-full);
  color: #25D366;
  font-weight: 600;
  transition: background var(--ease-fast), transform var(--ease-fast);
}
.top-bar__whatsapp:hover {
  background: rgba(37, 211, 102, 0.2);
  transform: scale(1.03);
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 36px; /* height of top-bar */
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: 1.1rem 0;
  transition: background var(--ease-smooth), backdrop-filter var(--ease-smooth),
              border-color var(--ease-base), padding var(--ease-smooth),
              top var(--ease-smooth);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border);
  padding: 0.7rem 0;
}

.navbar.top-bar-hidden { top: 0; }

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.navbar__logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
}
.logo-primary {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}
.logo-primary .logo-accent {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-tagline {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Nav links */
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
}

.navbar__links a {
  position: relative;
  padding: 0.45rem 0.75rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--ease-fast);
}

.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: transform var(--ease-base);
  transform-origin: center;
}

.navbar__links a:hover,
.navbar__links a.active {
  color: var(--color-text-primary);
}

.navbar__links a.active::after,
.navbar__links a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

/* Nav actions */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Hamburger */
.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--ease-fast);
}
.navbar__toggle:hover { border-color: var(--color-border-accent); }

.navbar__toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: transform var(--ease-base), opacity var(--ease-base);
}

.navbar__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.navbar__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Mobile Menu --- */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: calc(var(--z-sticky) - 1);
  padding: 6rem var(--section-pad-x) var(--space-8);
  flex-direction: column;
  gap: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px);
  transition: opacity var(--ease-smooth), transform var(--ease-smooth);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-menu a {
  display: block;
  padding: var(--space-4) var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--ease-fast), padding-left var(--ease-base);
}
.mobile-menu a:hover { color: var(--color-accent); padding-left: var(--space-6); }
.mobile-menu a.active { color: var(--color-text-primary); }

.mobile-menu__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

/* --- Responsive --- */
@media (max-width: 960px) {
  .navbar__links { display: none; }
  .navbar__actions .btn--primary { display: none; }
  .navbar__toggle { display: flex; }
  .mobile-menu { display: flex; }
}

@media (max-width: 640px) {
  .top-bar__contact a:last-child { display: none; }
  .top-bar__social { display: none; }
}