/* Paleta de colores personalizada para tema oscuro */
:root {
  --bg-dark: #121212;
  --bg-darker: #0d0d0d;
  --sidebar-bg: #1a1a1a;
  --text-light: #e4e4e4;
  --text-muted: #bbbbbb;
  --accent: #4f8cff;
  --accent-light: #6fa7ff;
  --card-bg: #1e1e1e;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-light);
  text-align: justify;
}

nav,
.navbar {
  background-color: var(--bg-darker) !important;
}

nav a.brand-logo,
nav ul a {
  color: var(--text-light) !important;
}

nav ul a:hover {
  color: var(--accent) !important;
}

/* Espacio para el navbar fijo */
.header-offset {
  padding-top: 64px;
  /* La altura del navbar */
}

@media (max-width: 600px) {
  .header-offset {
    margin-top: 56px;
    /* Altura menor en móviles */
  }
}

.section {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-light);
}

p,
li,
.card-content p,
label {
  color: var(--text-muted);
}

.card {
  background-color: var(--card-bg);
  border-radius: 8px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.05);
}

.card-title {
  color: var(--text-light);
  font-weight: bold;
}

.course-card {
  background-color: #1e1e2f;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.course-title {
  border-bottom: 1px solid #444;
  padding-bottom: 10px;
  margin-bottom: 15px;
  font-size: 1.5rem;
  font-weight: 600;
}

.course-list {
  list-style: none;
  padding-left: 0;
}

.course-list li {
  margin-bottom: 15px;
}

.course-list a {
  color: #fff;
  text-decoration: none;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  padding: 10px 15px;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

.course-list a:hover {
  background-color: #37474f;
}

.course-list i.material-icons {
  margin-right: 10px;
  font-size: 1.5rem;
}

.collection-item a {
  color: #fff;
  text-decoration: none;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  padding: 10px 10px;
  transition: background-color 0.3s ease;
}

.collection-item a:hover {
  background-color: #37474f;
}

#acerca .card-content h5 {
  margin-top: 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
}

#acerca .card-content p {
  font-size: 0.95rem;
}

#acerca i.material-icons.large {
  font-size: 3rem;
  color: var(--accent);
}

#por-que-python .card-content h5 {
  margin-top: 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
}

#por-que-python .card-content p {
  font-size: 0.95rem;
}

#por-que-python i.material-icons.large {
  font-size: 3rem;
  color: var(--accent);
}

#publico-objetivo .card-content h5 {
  margin-top: 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
}

#publico-objetivo .card-content p {
  font-size: 0.95rem;
}

#publico-objetivo i.material-icons.large {
  font-size: 3rem;
  color: var(--accent);
}

.btn {
  background-color: var(--accent);
  color: white;
  font-weight: 500;
}

.btn:hover {
  background-color: var(--accent-light);
}

.btn-floating {
  background-color: var(--accent);
}

.btn-floating:hover {
  background-color: var(--accent-light);
}

input,
textarea {
  background-color: #222 !important;
  color: var(--text-light) !important;
  border-bottom: 1px solid var(--accent);
}

input::placeholder,
textarea::placeholder {
  color: #888;
}

footer {
  background-color: var(--bg-darker);
  color: var(--text-muted);
  padding: 0.1rem 0;
}

.collection-item {
  background-color: #1c1c1c !important;
  color: var(--text-muted) !important;
}

.collection-header h5 {
  color: var(--text-light);
}

.material-icons.left {
  margin-right: 10px;
  vertical-align: middle;
}

/* Imagenes */
img.responsive-img {
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(255, 255, 255, 0.08);
}

/* Encabezado especial */
.hero {
  background: url('../images/header-background.png') no-repeat center center;
  background-size: cover;
  position: relative;
  padding: 120px 0;
  text-align: center;
  color: white;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3rem;
  font-weight: bold;
}

.hero p {
  font-size: 1.4rem;
  margin-top: 1rem;
}

/* Icono base */
.tech-icon {
  width: 56px;
  height: 56px;
  object-fit: contain;
  transition: transform .18s ease, filter .18s ease, box-shadow .18s ease;
  filter: grayscale(6%);
  margin-bottom: 6px;
}

.local-icon {
  background: rgba(255,255,255,0.02);
  padding: 6px;
  border-radius: 8px;
}

/* Label debajo del icono */
.tech-label {
  font-size: .76rem;
  margin-top: 0px;
  color: #cfcfcf;
}

/* Hover / focus states */
a.tooltipped:hover .tech-icon,
a.tooltipped:focus .tech-icon {
  transform: translateY(-6px) scale(1.08);
  box-shadow: 0 8px 20px rgba(79,140,255,0.08);
  filter: none;
}

/* Card tweaks */
.card .card-content { padding-bottom: 0.6rem; }
.card .card-title { color: #e8eefc; font-weight:600; }
.techologia-titulo { font-weight:600; margin-top: 1.2rem; }

/* Responsive adjustments */
@media (max-width: 600px) {
  .tech-icon { width:48px; height:48px; }
  .tech-label { font-size:.70rem; }
}