/* ---------- Navbar con sistema de temas ---------- */
.navbar {
  background: var(--navbar-bg);
  color: var(--navbar-text);
  padding: 16px 20px;
  box-shadow: var(--navbar-shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-logo a {
  text-decoration: none;
  color: var(--navbar-text);
  font-size: 1.5em;
  font-weight: bold;
}

.navbar-links {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.navbar-links li a {
  text-decoration: none;
  color: var(--navbar-text);
  padding: 8px 12px;
  border-radius: 6px;
  transition: background-color 0.2s, color 0.2s;
  font-weight: 600;
}

.navbar-links li a:hover {
  background-color: var(--navbar-hover-bg);
  color: var(--navbar-text);
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 28px;
  color: var(--navbar-text);
  cursor: pointer;
}

@media (max-width: 768px) {
  .navbar-toggle {
    display: block;
  }

  .navbar-container {
    flex-wrap: wrap;
  }

  .navbar-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--navbar-bg);
    flex-direction: column;
    display: none;
    padding: 10px 20px;
    z-index: 999;
    box-shadow: var(--navbar-shadow);
    order: 3;
    width: 100%;
  }

  .navbar-links.active {
    display: flex;
  }

  .navbar-links li a {
    display: block;
    width: 100%;
  }

  .navbar {
    position: relative;
  }

  .theme-toggle-wrapper {
    order: 2;
    margin-left: auto;
    margin-right: 1rem;
  }
}

.navbar-logo-img {
  height: 45px;
  width: auto;
  display: block;
  object-fit: contain;
}


/* Si quieres que se reduzca en móviles */
@media (max-width: 480px) {
  .navbar-logo-img {
    height: 32px;
  }
}

.navbar-logo a:hover img {
  filter: brightness(0.6);
  transition: filter 0.2s ease;
}

/* ──────────────────────────────────────────────────────────
   Theme Toggle Slider
   ────────────────────────────────────────────────────────── */
.theme-toggle-wrapper {
  display: flex;
  align-items: center;
  margin-left: 1rem;
}

.theme-toggle {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 30px;
  cursor: pointer;
}

.theme-toggle input[type="checkbox"] {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #87CEEB 0%, #4682B4 100%);
  border-radius: 30px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    inset 0 2px 4px rgba(0, 0, 0, 0.1),
    0 2px 8px rgba(0, 0, 0, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.slider:before {
  content: "";
  position: absolute;
  height: 26px;
  width: 26px;
  left: 2px;
  background: #fff;
  border-radius: 50%;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 2px 6px rgba(0, 0, 0, 0.2),
    0 0 0 1px rgba(0, 0, 0, 0.05);
}

.slider-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
}

.slider-icon.sun {
  left: 2px;
  top: 11.5px;
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

.slider-icon.moon {
  right: 2px;
  top: 11.5px;
  opacity: 0;
  transform: translateY(-50%) scale(0.8);
}

/* Estado checked (modo oscuro) */
input:checked + .slider {
  background: linear-gradient(135deg, #2C3E50 0%, #1A252F 100%);
}

input:checked + .slider:before {
  transform: translateX(28px);
}

input:checked + .slider .sun {
  opacity: 0;
  transform: translateY(-50%) scale(0.8);
}

input:checked + .slider .moon {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

/* Hover effects */
.theme-toggle:hover .slider {
  box-shadow: 
    inset 0 2px 4px rgba(0, 0, 0, 0.1),
    0 4px 12px rgba(0, 0, 0, 0.2);
  transform: scale(1.05);
}

.theme-toggle:hover .slider:before {
  box-shadow: 
    0 4px 8px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(0, 0, 0, 0.1);
}

/* Responsive adjustments */
@media (max-width: 480px) {
  .theme-toggle {
    width: 50px;
    height: 25px;
  }
  
  .slider:before {
    height: 21px;
    width: 21px;
    left: 2px;
  }
  
  .slider-icon {
    font-size: 11px;
    width: 21px;
    height: 21px;
  }
  
  .slider-icon.sun {
    left: 2px;
    top: 10px;
  }
  
  .slider-icon.moon {
    right: 2px;
    top: 10px;
  }
  
  input:checked + .slider:before {
    transform: translateX(23px);
  }
}