:root {
  --bg-principal: #f4fdff;         
  --texto-principal: #01012b;      
  --bg-acento: #17bbc1;            
  --color-destacado: #700bb3;      
  --icono-color: #01012b;
  --bg-hover: #d1f7ff; 
  --linea-color: rgba(1, 1, 43, 0.1);            
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-principal);
  color: var(--texto-principal);
  font-family: "Exo", sans-serif;
  font-optical-sizing: auto;
} 

/* Modo oscuro */
body.dark-mode {
  --bg-principal: #01012b;
  --texto-principal: #d1f7ff;
  --bg-acento: #cb0c59; 
  --color-destacado: #fee801;
  --icono-color: rgb(240, 253, 255);
  --bg-hover: #2F3EAB;
  --linea-color: hsla(200, 14%, 96%, 0.235);
}

a {
  color: var(--texto-principal);
  text-decoration: none;
}

h2 {
  padding-left: 2rem;
  letter-spacing: 1px;
}

.marca {
  font-weight: bolder;
  font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
  font-size: 25px;
  padding: 0 10px 0 10px;
}

.navbar {
  padding: 1rem;
  background-color: var(--bg-acento);
  position: sticky;
  top: 0;
  margin: 0;
  z-index: 1000;
}

.nav-block-left, .nav-block-right {
  flex: 1;
  display: flex;
  align-items: center;
}

.nav-block-right {
  justify-content: flex-end;
}

.navbar-collapse {
  align-items: center;
}

.navbar .nav-link {
  font-weight: bold;
}

.navbar a {
  color: var(--texto-principal);
}

.navbar a:hover {
  color: var(--color-destacado);
  background-color: var(--bg-hover);
  border-radius: 10px;
}

/* Botón minimalista */
.btn-toggle-theme {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.6rem;
  color: var(--texto-principal);
  transition: transform 0.3s ease, color 0.3s ease;
}

.btn-toggle-theme:hover {
  color: var(--color-destacado);
  transform: scale(1.2);
}

.btn-toggle-theme.rotate {
  animation: rotate 0.5s ease;
}

@keyframes rotate {
  from { transform: rotateY(0deg); }
  to   { transform: rotateY(360deg); }
}

.hero-section {
  position: relative;
  overflow: hidden;
}

#grafo {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.perfil {
  position: relative;
  z-index: 2;
}

.correo {
  background-color: var(--bg-principal);
  color: var(--texto-principal);
  border: none;
  text-decoration: none;
  cursor: pointer;
  padding: 0.5rem 0.5rem;
  border-radius: 5px;
}

.correo:hover {
  transform: scale(1.1);
}

.resaltar {
  color: var(--color-destacado);
}

.sobre-mi {
  padding: 2rem;
  font-size: larger;
}


/*stack tecnológico*/
.tech-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  width: 90px;
  height: 90px;
  background-color: var(--bg-hover); 
  border: 2px solid var(--linea-color);
  border-radius: 12px;
  cursor: default; 
  user-select: none;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
}

.tech-chip:hover {
  background-color: var(--bg-principal);
  border-color: var(--color-destacado);
  transform: scale(1.1);
}

.tech-chip i {
  font-size: 2rem;
  color: var(--texto-principal) !important; 
  transition: color 0.3s ease;
}

.tech-chip:hover i {
  color: var(--color-destacado) !important;
}

.tech-chip span {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--texto-principal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/*Tarjetas de los proyectos*/
.tarjeta {
  background-color: var(--bg-acento);
  color: var(--texto-principal);
  border-radius: 10px;
  padding: 1rem;
}

.btn-tarjeta {
  background-color: var(--bg-principal);
  color: var(--texto-principal);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

.btn-tarjeta:hover {
  background-color: var(--texto-principal);
  color: var(--bg-principal);
}

.imagen-proyecto {
  display: block;        
  width: 100%;           
  height: auto;          
  object-fit: cover;     
  filter: brightness(0.9);
  min-height: 180px;
  margin: 0;             
}

.seccion-color {
  color: var(--texto-principal);
  padding: 2rem;
  border-radius: 10px;
}

.row {
  display: flex !important;
  flex-wrap: wrap !important;
}


footer {
  color: var(--texto-principal);
  bottom: 0;
  width: 100%;
  padding: 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  min-height: 300px;
}

/* Contenedor sutil para las acciones de contacto */
.contacto-wrapper {
  padding: 10px 12px;
  border-radius: 50px;
  border: 1px solid transparent;
  transition: all 0.3s ease;
}

.contacto-wrapper:hover {
  border-color: var(--resaltar); 
  background: rgba(128, 128, 128, 0.15);
}

.btn-copy-js, .btn-contact-js {
  cursor: pointer;
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.btn-copy-js:hover, .btn-contact-js:hover {
  color: var(--resaltar);
}

.derechos {
  margin-top: 25px;
  font-size: 0.9rem;
  color: var(--texto-principal);
}

.iconos-redes i {
  color: var(--icono-color);
  font-size: 2rem;
  margin: 0 10px;
  transition: all 0.2s ease-in;
}

.iconos-redes a:hover {
  transform: scale(1.1);
}

/* Diseño responsivo */
@media (min-width: 768px) {
  .navbar-collapse {
    flex: 2;
  }
  .imagen-proyecto {
    width: 100%;       
    max-width: 100%;   
    height: auto;
  }
}

@media (max-width: 767px) {
  .navbar .container-fluid {
    flex-wrap: wrap;
  }
  
  .navbar-collapse {
    flex-basis: 100%;
    order: 3;
    text-align: center;
    background-color: var(--bg-acento);
    margin-top: 10px;
    padding: 1rem;
    border-radius: 10px;
  }

  .nav-block-left {
    flex: 1;
  }
}