:root {
  --primary: #d9bed8;
  --dark-bg: #212529;
  --accent: #ff4d4d;
  --radius: 0.375rem;
  --red: #ff4d4d;
  --color-claro: #1e90ff;
  --color-oscuro: #ff4d4d;
}

.text-danger {
  color: var(--red) !important;
}

.btn-outline-danger {
  border-color: var(--red);
  color: var(--red);
}

.btn-outline-danger:hover {
  background-color: var(--red);
  color: #fff;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh; /* altura mínima igual a la ventana */
  font-family: "Arial", sans-serif;
  background-color: var(--dark-bg);
  color: var(--primary);
  margin: 0;
  padding: 0;
  user-select: none;
}
main {
  flex: 4; /* esto hace que el main ocupe el espacio restante */
}
/* NAVBAR */

.navbar-scrolled {
  background: #212529;
}

.navbar-nav.flex-row .nav-item {
  margin: 0 10px;
}

.navbar .nav-link {
  color: #f0f0f0;
  font-weight: 500;
}

.navbar .nav-link:hover {
  color: var(--red);
}

/* Línea roja general debajo del menú */
.nav-center-wrapper {
  position: relative;
}

.nav-underline {
  width: 100%;
  height: 3px;
  background-color: var(--red);
  border-radius: 5px;
  margin-top: 6px;
}

/* Botón */
.contact-btn {
  border-radius: 20px;
  padding: 5px 15px;
  font-weight: 500;
}

/* HERO SECTION */
.hero-section {
  height: 100vh;
  background: url("../image/fondo-montanas.jpg") no-repeat center center/cover;
  padding-top: 120px;
  color: white;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-avatar {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
  border: 5px solid var(--red);
  box-shadow: 0 0 15px var(--red);
  margin-bottom: 1rem;
}

.hero-name {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--red);
}

.hero-role {
  font-size: 1.2rem;
  color: #f0f0f0;
}

.scroll-down {
  position: absolute;
  bottom: 30px;
  font-size: 0.9rem;
  color: #ccc;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

/* ICONOS SOCIALES */
.hero-socials {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
}

.social-icon i {
  font-size: 1.8rem;
  color: #f0f0f0;
  transition: color 0.3s ease, transform 0.3s ease;
}

.social-icon:hover i {
  color: var(--red);
  transform: scale(1.2);
}

.social-icon img {
  filter: brightness(90%);
  transition: filter 0.3s ease, transform 0.3s ease;
}

.social-icon:hover img {
  filter: brightness(60%) sepia(100%) saturate(700%) hue-rotate(-10deg);
  transform: scale(1.2);
}

/* ABOUT */
.about-me-section {
  max-width: 1000px;
  margin: 5rem auto 3rem;
  padding: 2rem 2rem 3rem;
  background: #212529;
  border: 2px solid var(--red);
  border-radius: var(--radius);
  box-shadow: 0 0 16px var(--red);
  display: flex;
  flex-wrap: wrap;
  align-items: start;
  justify-content: center;
}

.about-photo {
  flex: 0 0 auto;
}

.about-img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: 90%;
  border: 5px solid var(--red);
}

.about-info {
  flex: 1 1 400px;
  margin-left: 1rem;
  text-align: left;
  color: var(--primary);
}

.software-title {
  color: var(--primary);
  font-weight: bold;
  font-size: 1rem;
}

.software-icons {
  display: flex;
  gap: 2rem;
  margin-top: 3rem;
  justify-content: center;
  width: 100%;
}

.tech-box {
  background-color: var(--red);
  border-radius: 1.5rem;
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 10px var(--red);
  width: 80px;
  height: 100px;
  transition: box-shadow 0.3s;
  margin-top: 0.3rem;
}

.tech-box:hover {
  box-shadow: 0 0 18px #ff7373;
}

.tech-box img {
  width: 40px;
  height: 40px;
  filter: brightness(0) invert(1);
  margin-bottom: 8px;
  transition: transform 0.3s;
  margin-top: 0.9rem;
}

.tech-box:hover img {
  transform: scale(1.2);
}

.percentage {
  font-weight: bold;
  font-size: 1rem;
  color: #fff;
}

/* FOOTER */
footer {
  border-top: 2px solid var(--red);
  text-align: center;
  padding: 1rem 0;
  background-color: #212529;
  color: var(--primary);
}

/* HABILIDADES */
.habilidades-section {
  max-width: 1100px;
  margin: 5rem auto 3rem;
  padding: 0 1rem;
}

.habilidades-cards {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: nowrap;
}

@media (max-width: 1024px) {
  .habilidades-cards {
    flex-wrap: wrap;
  }
}

.habilidad-card {
  background-color: #1e1e1e;
  border: 2px solid var(--red);
  border-radius: 12px;
  padding: 20px;
  width: 32%;
  box-shadow: 0 0 12px var(--red);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: box-shadow 0.3s ease;
}

.habilidad-card:hover {
  box-shadow: 0 0 20px #ff7373;
}

.habilidad-icon {
  width: 60px;
  height: 60px;
  filter: brightness(0) invert(1);
  margin-bottom: 12px;
  transition: transform 0.3s ease;
}

.habilidad-card:hover .habilidad-icon {
  transform: scale(1.2);
}

.habilidad-card h3 {
  color: var(--red);
  margin-bottom: 10px;
  font-weight: 700;
  font-size: 1.4rem;
  user-select: text;
}

.barra-porcentaje {
  background-color: #2a2a2a;
  border-radius: 20px;
  width: 100%;
  height: 16px;
  overflow: hidden;
  box-shadow: inset 0 0 5px #ff4d4d99;
  margin-bottom: 6px;
  position: relative;
}

.barra-llena {
  background: linear-gradient(90deg, #ff4d4d, #ff7373);
  height: 100%;
  border-radius: 20px 0 0 20px;
  box-shadow: 0 0 10px #ff4d4d, 0 0 15px #ff7373;
  animation: barra-anim 2s ease forwards;
  width: 0;
}

@keyframes barra-anim {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

.porcentaje-texto {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 14px;
  user-select: text;
}

/* Subhabilidades */
.subhabilidades {
  width: 100%;
}

.subhabilidad {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--primary);
  font-size: 0.9rem;
  user-select: text;
}

.subhabilidad span:first-child {
  width: 65%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.barra-sub {
  flex: 1;
  height: 8px;
  background-color: #2a2a2a;
  border-radius: 10px;
  margin: 0 10px;
  box-shadow: inset 0 0 5px #ff4d4d99;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
}

.barra-sub::before {
  content: "";
  position: absolute;
  height: 100%;
  background: linear-gradient(90deg, #ff4d4d, #ff7373);
  border-radius: 10px;
  width: 100%;
  animation: barra-sub-anim 2s ease forwards;
  box-shadow: 0 0 6px #ff4d4d, 0 0 8px #ff7373;
  left: 0;
  top: 0;
  transform-origin: left;
  transform: scaleX(0);
}

@keyframes barra-sub-anim {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

/* Adaptación responsive */
@media (max-width: 900px) {
  .habilidad-card {
    width: 48%;
    margin-bottom: 20px;
  }
}

@media (max-width: 600px) {
  .habilidad-card {
    width: 100%;
  }
}

/* RESPONSIVE ABOUT */
@media (max-width: 768px) {
  .about-me-section {
    flex-direction: column;
    text-align: center;
  }

  .about-info {
    margin-left: 0 !important;
    margin-top: 1.5rem;
  }

  .navbar-nav.flex-row {
    flex-direction: column;
    align-items: center;
  }

  .nav-underline {
    display: none;
  }
}

/* TECNOLOGÍAS CARD */
.tecnologias-card {
  background-color: #1e1e1e;
  border: 2px solid var(--red);
  border-radius: 12px;
  padding: 25px 20px;
  box-shadow: 0 0 12px var(--red);
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

.tecnologias-card h4 {
  font-weight: 700;
  color: var(--red);
  user-select: text;
}

.tecnologias-icons {
  gap: 25px;
}

/* ---------- Estilos base para imágenes ---------- */
img,
svg {
  vertical-align: middle;
  box-sizing: border-box;
}

/* INDICADORES TECNOLÓGICOS */
.tech-indicador {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100px;
  margin: 1rem;
  cursor: default;
  user-select: none;
  transition: transform 0.3s ease;
}

button {
  cursor: pointer;
  font-weight: 600;
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  background: transparent;
  border: 2px solid var(--red);
  color: var(--red);
  transition: background-color 0.3s ease, color 0.3s ease;
}

button:hover {
  background-color: var(--red);
  color: #fff;
}

/* Scrollbars personalizados para listas y textarea */
#comments-list::-webkit-scrollbar,
textarea::-webkit-scrollbar {
  width: 8px;
}

#comments-list::-webkit-scrollbar-thumb,
textarea::-webkit-scrollbar-thumb {
  background-color: var(--red);
  border-radius: 10px;
}
.tech {
  width: 60px;
  height: 60px;
  margin-bottom: 0.5rem;
  filter: brightness(0) invert(1);
  transition: transform 0.3s ease;
}
/* Media queries para mejoras responsive */
@media (max-width: 600px) {
  .tech-indicador {
    width: 80px;
    margin: 0.5rem;
  }

  .tech {
    width: 50px;
    height: 50px;
  }
}

/* Header fijo en la parte superior */
.main-header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #212529;
  box-shadow: 0 2px 8px #212529);
  z-index: 1000;
}

/* Navbar */
.navbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
}

/* Contenedor central para nav items y botón */
.nav-center-wrapper {
  display: flex;
  align-items: center;
  justify-content: center; /* antes era space-between */
  gap: 1.5rem; /* opcional: espacio entre los links */
}

/* Lista horizontal para los links */
.navbar-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 1.5rem;
}

/* Links del nav */
.nav-link {
  color: #ddd;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: color 0.3s ease;
  user-select: none;
}

.nav-link:hover,
.nav-link:focus {
  color: #ff4d4d; /* color rojo */
  outline: none;
}

.nav-underline {
  width: 120px; /* ancho de la línea */
  height: 4px; /* grosor */
  margin: 6px auto 0 auto; /* centra horizontalmente */
  border-radius: 2px;
  background: linear-gradient(to right, 
                              rgba(255, 77, 77, 0),  /* borde izquierdo desvanecido */
                              var(--red),            /* color principal */
                              rgba(255, 77, 77, 0)); /* borde derecho desvanecido */
  box-shadow: 0 0 8px rgba(255, 77, 77, 0.6); /* opcional: resalta la línea */
}

.btn-regresar {
  position: fixed;
  top: 70px; /* distancia desde arriba */
  left: 420px; /* distancia desde la izquierda */
  z-index: 1000; /* para que quede encima de otros elementos */
}

.proyecto-card.destacada {
  width: 100%;
  max-width: 500px;
  padding: 2rem;
  font-size: 1.1rem;
}



.proyecto-card.destacada img {
  max-width: 250px;
}
/* Botón cambiar tema */
#btn-toggle-theme {
  background-color: transparent;
  border: 2px solid #ddd;
  border-radius: 6px;
  color: #ddd;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 4px 10px;
  transition: background-color 0.3s ease, color 0.3s ease;
  user-select: none;
}

#btn-toggle-theme:hover,
#btn-toggle-theme:focus {
  background-color: #ff4d4d;
  color: white;
  outline: none;
}

/* Responsive pequeño */
@media (max-width: 480px) {
  .nav-center-wrapper {
    flex-direction: column;
    gap: 0.75rem;
  }

  .navbar-nav {
    flex-direction: column;
    gap: 0.5rem;
  }

  #btn-toggle-theme {
    align-self: flex-end;
  }
}
/* ====== SECCIONES APUNTES Y PROYECTOS ====== */
.section-title {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

/* Contenedor de las tarjetas de proyectos/apuntes */
.contenedor-proyectos {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  
  justify-content: center;
  margin-top: 1rem;
  padding: 0 1rem; 
}

/* Tarjeta de proyecto/apunte */
.proyecto-card {
  background-color: #212529;
  border: 2px solid var(--red);
  border-radius: 12px;
  padding: 1rem;
  width: 200px;
  flex: 1 1 250px; /* flexible: crece, encoge, ancho base 250px */
  max-width: 300px; 
  box-shadow: 0 0 12px var(--red);
  text-align: center;
  transition: box-shadow 0.3s ease;
   margin: auto;
}

.proyecto-card img,
.proyecto-card svg {
  width: 100%;         /* ocupa el 100% del ancho de la tarjeta */
  height: auto;        /* mantiene proporción */
  max-width: 100%;     /* nunca se sale */
  display: block;      /* elimina espacios en línea */
  margin: 0 auto 0.75rem; /* centrado y espacio abajo */
  border-radius: 8px;  /* esquinas redondeadas */
}

/* Evitar desbordes en móviles */
.proyecto-card {
  overflow: hidden;
}

.proyecto-card:hover {
  box-shadow: 0 0 20px #ff7373;
}

.proyecto-card img {
  max-width: 100%;
  border-radius: 8px;
  margin-bottom: 0.75rem;
}

.proyecto-card h3,
.proyecto-card h4 {
  color: var(--red);
  margin-bottom: 0.5rem;
}

.proyecto-card p {
  color: var(--primary);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

/* Responsive: Tarjetas más pequeñas en móvil */
@media (max-width: 600px) {
  .proyecto-card {
    width: 100%;
    max-width: 350px;
  }
}

.hidden {
  display: none !important;
}

.logo-btn {
  cursor: pointer;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--red);
  transition: all 0.3s ease-in-out;
  user-select: none;
}
.logo-btn:hover {
  color: var(--primary);
  transform: scale(1.1);
  text-shadow: 0 0 12px var(--red);
}
/* Bienvenida */
.welcome-section {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 85vh;
  text-align: center;
  background: linear-gradient(135deg, #212529, #212529);
  padding: 2rem;
}

.welcome-card {
  background: #1e1e1e;
  border: 2px solid var(--red);
  border-radius: 15px;
  padding: 3rem 2rem;
  max-width: 700px;
  box-shadow: 0 0 25px rgba(255, 77, 77, 0.4);
  animation: fadeIn 1.5s ease-in-out;
}

.welcome-card h1 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.welcome-card .highlight {
  color: var(--red);
}

.welcome-card p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.quote-box {
  border-left: 4px solid var(--red);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--primary);
  font-style: italic;
}

.explore-btn {
  margin-top: 1.5rem;
  font-size: 1rem;
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  border: 2px solid var(--red);
  background: transparent;
  color: var(--red);
  font-weight: bold;
  transition: 0.3s ease;
}

.explore-btn:hover {
  background: var(--red);
  color: #fff;
  box-shadow: 0 0 12px var(--red);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(25px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.navbar-nav.flex-row {
    display: flex;
    justify-content: center; /* ya centrado */
    gap: 1.5rem;
    margin-top: 20px; /* baja las opciones un poco */
}

.nav-button {
  display: inline-block;
  padding: 10px 20px;
  background: linear-gradient(
    135deg,
    #ff4d4d99,
    #212529
  ); /* degradado moderno */
  color: white;
  font-weight: bold;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  position: relative;
  top: -10px;
}

.nav-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  background: linear-gradient(
    135deg,
    #ff4d4d99 #ff4d4d99
  ); /* invertir colores al hover */
}

/* Ajuste responsive para que el contenido no quede cubierto por el menú */
@media (max-width: 768px) {
  main {
    padding-top: 180px; /* ajusta este valor según el tamaño del navbar desplegable */
  }

  .hero-section {
    padding-top: 150px; /* o más si quieres más espacio visual */
  }
}

/* Botón navbar solo visible en móvil */
.navbar-toggler {
  display: none; /* por defecto no se muestra */
  background: transparent;
  border: none;
  color: var(--red);
  font-size: 1.5rem;
  cursor: pointer;
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 1100;
}

/* Mostrar solo en pantallas pequeñas */
@media (max-width: 768px) {
  .navbar-toggler {
    display: block;
  }

  /* Ocultar los nav-links inicialmente */
  .navbar-nav {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }

  /* Mostrar nav-links cuando se active la clase "active" */
  .navbar-nav.active {
    display: flex;
  }
}
@media (max-width: 768px) {
  main {
    padding-top: 180px; /* espacio suficiente para navbar desplegable */
  }
}

/* Botón hamburguesa solo visible en móvil */
.navbar-toggler {
  display: none;
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--red);
  cursor: pointer;
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 1100;
}

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

  /* Ocultar los nav-items inicialmente */
  .navbar-nav.flex-row {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
  }

  /* Mostrar nav-items cuando se active la clase "active" */
  .navbar-nav.flex-row.active {
    display: flex;
  }

  /* Ajustar padding del main para que no quede cubierto */
  main {
    padding-top: 180px;
  }
}

/* Contenedor de video adaptativo */
#video-container {
  width: 100%;
  max-width: 720px; /* límite en desktop */
  margin: 1rem auto;
  box-shadow: 0 0 18px var(--red);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  padding-top: 56.25%; /* 16:9 */
}

#video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 12px;
}

/* Botones anteriores/siguiente centrados y flexibles */
#video-prev,
#video-next {
  flex: 1;
  max-width: 150px;
}

/* Contenedor de comentarios y textarea responsivo */
#comments-list,
#notes-textarea {
  width: 100%;
  box-sizing: border-box;
}

/* Ajustes para pantallas pequeñas */
@media (max-width: 768px) {
  #videos-main-menu > div {
    flex-direction: column;
    gap: 0.5rem;
  }

  #videos-module > div {
    flex-direction: column;
    gap: 0.5rem;
  }

  #video-prev,
  #video-next {
    width: 100%;
  }
}

@media (max-width: 480px) {
  #videos-main-menu > div button {
    width: 100%;
  }

  #video-container {
    max-width: 100%;
  }
}

#video-prev,
#video-next {
  flex: 1;
  max-width: 150px;
  margin: 0.5rem;
}

/* En móviles, ocupan todo el ancho y se apilan */
@media (max-width: 600px) {
  #video-prev,
  #video-next {
    width: 100%;
    max-width: 100%;
  }
}

#videos-module > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

/* En móviles se apilan verticalmente */
@media (max-width: 768px) {
  #videos-module > div {
    flex-direction: column;
    align-items: center;
  }
}
#videos-main-menu > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* Botones de sección ocupan todo el ancho en móviles */
@media (max-width: 480px) {
  #videos-main-menu > div button {
    width: 100%;
  }
}
#comments-list,
#notes-textarea {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  box-sizing: border-box;
}
#videos-btn-back {
  margin: 1rem auto;
  display: block;
}
/* Ajustes para tablet */
@media (max-width: 900px) {
  .proyecto-card {
    flex: 1 1 45%; /* dos por fila */
    max-width: 45%;
  }
}

/* Ajustes para móvil */
@media (max-width: 600px) {
  .proyecto-card {
    flex: 1 1 100%; /* una por fila */
    max-width: 100%;
  }
}

/* Ajustes para tablet */
@media (max-width: 900px) {
  .proyecto-card {
    flex: 1 1 45%; /* dos por fila */
    max-width: 45%;
  }
}

.perfil-card {
  display: flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #212529, #2a5298);
  padding: 8px 14px;
  border-radius: 50px;
  color: #fff;
  font-weight: bold;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease-in-out;
}

.perfil-card img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid #fff;
}

.perfil-card:hover {
  transform: scale(1.05);
  background: linear-gradient(135deg, #212529, #1e3c72);
}