:root {
  --bg-color-top: #0d0d0d;
  --bg-color-bottom: #150000;
  --panel-bg: #110e0e;
  --panel-border: #333333;
  --interactive-bg: #2d2b2b;
  --interactive-hover: #505050;
  --accent-color: #930000;
  --primary-text: #ffffff;
  --secondary-text: #cbc1c1;
  --sidebar-width: 250px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color-top);
}
::-webkit-scrollbar-thumb {
  background: var(--interactive-bg);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color);
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to top, var(--bg-color-bottom), var(--bg-color-top));
  background-attachment: fixed;
  color: var(--primary-text);
  overflow-x: hidden;
  min-height: 100vh;
}

@keyframes fadeInSlideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes serpentine {
  0%, 100% { transform: rotate(0deg) translateY(0px); }
  25% { transform: rotate(4deg) translateY(-4px); }
  75% { transform: rotate(-4deg) translateY(3px); }
}

@keyframes hop {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

@keyframes diagonalFall {
  0% { transform: translate(0, 0); opacity: 1; }
  100% { transform: translate(-10vw, 10vh); opacity: 0; }
}

@keyframes diagonalFallFugaz {
  0% { transform: translate(0, 0); opacity: 1; }
  100% { transform: translate(-15vw, 15vh); opacity: 0; }
}

.animated-element {
  animation: fadeInSlideUp 0.8s ease-out forwards;
  opacity: 0;
}

body.is-hovering .icon {
  animation-play-state: paused;
}

.home-screen {
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  position: relative;
}

.home-content {
  max-width: 800px;
  z-index: 10;
}

.home-profile-img {
  width: 150px;
  height: 150px;
  background-color: var(--interactive-bg);
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  border: 3px solid var(--panel-border);
  background-image: url(img/measly543.jpg);
  background-size: cover;
  background-position: center;
}

.home-username {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.home-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.home-nav-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--secondary-text);
  transition: transform 0.2s ease-out, color 0.2s;
}

.home-nav-button .icon-container {
  width: 90px;
  height: 90px;
  background-color: var(--interactive-bg);
  border-radius: 25px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 0.75rem;
  font-size: 2.5rem;
  border: 1px solid var(--panel-border);
  transition: border-color 0.3s;
}

.home-nav-button:hover {
  color: var(--primary-text);
  transform: translateY(-5px);
}
.home-nav-button:hover .icon-container {
  border-color: var(--accent-color);
}
.home-nav-button .icon {
  animation: serpentine 4s ease-in-out infinite;
}

#main-portfolio {
  display: flex;
  width: 100%;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  background-color: rgba(10, 10, 10, 0.95);
  padding: 2rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  border-right: 1px solid var(--panel-border);
  transition: transform 0.3s ease-in-out;
  flex-shrink: 0;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 1000;
  will-change: transform;
}

.sidebar.hidden-on-home {
  transform: translateX(-100%);
}

.profile {
  text-align: center;
  margin-bottom: 3rem;
}

#back-to-home {
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  display: block;
  width: 120px;
  height: 120px;
  background-color: var(--interactive-bg);
  border-radius: 20px;
  margin: 0 auto 1rem;
  border: 2px solid var(--panel-border);
  background-image: url(img/measly543.jpg);
  background-size: cover;
  background-position: center;
}

#back-to-home:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px rgba(147, 0, 0, 0.4);
}

.profile-name {
  font-size: 1.5rem;
  font-weight: 600;
}

.navigation ul {
  list-style: none;
  width: 100%;
}

.navigation li a {
  display: flex;
  align-items: center;
  padding: 0.8rem 1rem;
  margin: 0.5rem 0;
  color: var(--secondary-text);
  text-decoration: none;
  border-radius: 10px;
  transition: background-color 0.3s, color 0.3s;
}

.navigation li a .icon {
  font-size: 1.2rem;
  margin-right: 1rem;
  width: 20px;
  text-align: center;
}

.navigation li a.active,
.navigation li a:hover {
  background-color: var(--interactive-bg);
  color: var(--primary-text);
  border-left: 3px solid var(--accent-color);
}

.main-content {
  flex-grow: 1;
  margin-left: var(--sidebar-width);
  padding: 0;
  transition: margin-left 0.3s ease-in-out;
  width: 100%;
}

.main-content.full-width {
  margin-left: 0;
}

.content-section {
  min-height: 100vh;
  padding: 4rem 3rem;
  scroll-margin-top: 20px;
}

.content-section.centered-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.content-section h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 0.5rem;
  display: inline-block;
}

.content-section p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--secondary-text);
  max-width: 800px;
}

.image-container {
  padding: 10px;
  margin-top: 50px;
  position: relative;
  width: 100%;
  height: 500px;
  overflow: hidden;
  border-radius: 10px;
}

.about-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.fade-top, .fade-bottom {
  position: absolute;
  left: 0;
  right: 0;
  height: 80px;
  pointer-events: none;
  z-index: 1;
}

.fade-top {
  top: 0;
  background: linear-gradient(to bottom, var(--bg-color-top), transparent);
}

.fade-bottom {
  bottom: 0;
  background: linear-gradient(to top, var(--bg-color-top), transparent);
}


.filter-container {
  margin: 1rem 0 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

#category-filter {
  background-color: var(--interactive-bg);
  color: var(--primary-text);
  border: 1px solid var(--panel-border);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  outline: none;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
  width: 100%;
}

.project-card {
  background-color: transparent;
  aspect-ratio: 1 / 1.3;
  perspective: 1000px;
  cursor: pointer;
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.7s;
  transform-style: preserve-3d;
}

.card-inner.flipped {
  transform: rotateY(180deg);
}

.card-front, .card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  border-radius: 15px;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  overflow: hidden;
}

.card-front {
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
}

.card-image {
  width: 100%;
  height: 70%;
  background-color: var(--interactive-bg);
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--panel-border);
}

.project-card[data-category="robotica"] .card-image { background-image: url("img/robotica-icon.png"); }
.project-card.sumo .card-image { background-image: url("img/sumito.jpg"); }
.project-card.rc-car .card-image { background-image: url("img/rc-car.jpg"); }
.project-card[data-category="iot"] .card-image { background-image: url("img/iot-icon.png"); }
.project-card.rider-safe .card-image { background-image: url("img/ridersafe.jpg"); }

.card-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: 1rem;
}

.card-back {
  transform: rotateY(180deg);
  padding: 1.5rem;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.card-back h3 { margin-bottom: 1rem; color: var(--primary-text); }
.card-back p { font-size: 0.95rem; color: var(--secondary-text); margin-bottom: 1rem; }

.category-tag {
  background-color: var(--interactive-bg);
  color: var(--accent-color);
  padding: 0.3rem 0.6rem;
  border-radius: 5px;
  font-size: 0.8rem;
  font-weight: bold;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  margin-top: 1.5rem;
}

.social-links a {
  color: var(--primary-text);
  font-size: 1.4rem;
  transition: color 0.3s ease;
}

.social-links a:hover {
  color: var(--accent-color);
}

.social-links a:hover i {
  animation: hop 0.5s ease-in-out !important;
}

.experience-list {
  list-style: none;
  padding: 0;
  width: 100%;
  max-width: 800px;
}

.experience-item {
  border-bottom: 1px solid var(--panel-border);
  margin-bottom: 1rem;
  padding-bottom: 1rem;
}

.experience-toggle {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  width: 100%;
  text-align: left;
  font-family: inherit;
  color: var(--primary-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  transition: background-color 0.3s;
}

.experience-toggle:hover {
  background-color: var(--interactive-bg);
}

.experience-toggle h4 { margin: 0; font-size: 1.1rem; }

.toggle-icon { transition: transform 0.3s ease; }
.experience-toggle.open .toggle-icon { transform: rotate(180deg); }

.experience-details {
  display: none;
  margin-top: 1rem;
  padding: 1rem;
  animation: fadeIn 0.3s ease-in-out;
  background: rgba(0,0,0,0.2);
  border-radius: 8px;
}

.experience-details.visible { display: block; }

.experience-gallery {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.experience-gallery img {
  width: 150px;
  height: 120px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--panel-border);
  transition: transform 0.2s ease;
  cursor: zoom-in;
}

.experience-gallery img:hover { transform: scale(1.1); }

.contact-links {
  margin-top: 2rem;
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-links a {
  color: var(--secondary-text);
  text-decoration: none;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  transition: color 0.3s, transform 0.2s;
  padding: 0.5rem 1rem;
  background-color: var(--interactive-bg);
  border-radius: 8px;
}

.contact-links a:hover {
  color: var(--primary-text);
  transform: translateY(-3px);
  background-color: var(--accent-color);
}

#stars {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: white;
  border-radius: 50%;
  opacity: 0.6;
  animation: diagonalFall linear infinite;
  will-change: transform;
}

.star.fugaz {
  width: 4px;
  height: 4px;
  background: rgba(100, 200, 255, 0.9);
  box-shadow: 0 0 6px rgba(100, 200, 255, 0.7), -10px 10px 20px rgba(100, 200, 255, 0.3);
  animation: diagonalFallFugaz linear infinite;
}

.mobile-menu-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 2000;
  background-color: var(--interactive-bg);
  color: var(--primary-text);
  border: 1px solid var(--panel-border);
  border-radius: 5px;
  padding: 0.5rem 0.8rem;
  font-size: 1.5rem;
  cursor: pointer;
  transition: background-color 0.3s;
}

.mobile-menu-toggle:hover {
  background-color: var(--accent-color);
}

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

  .home-username { font-size: 2rem; }
  .home-nav { gap: 1rem; }
  .home-nav-button .icon-container { width: 70px; height: 70px; font-size: 2rem; }

  #main-portfolio {
    flex-direction: column;
  }

  .sidebar {
    width: 100%; 
    max-width: 300px; 
    height: 100vh;
    transform: translateX(-100%);
    z-index: 1500;
    padding-top: 5rem; 
    background-color: rgba(10, 10, 10, 0.98);
    box-shadow: 5px 0 15px rgba(0,0,0,0.5);
  }

  .sidebar.open {
    transform: translateX(0) !important;
  }
  
  .sidebar.hidden-on-home {
    transform: translateX(-100%);
  }

  .main-content {
    margin-left: 0;
    width: 100%;
  }

  .main-content.full-width {
    margin-left: 0;
  }

  .content-section {
    padding: 3rem 1.5rem;
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}
.lightbox {
  position: fixed;
  z-index: 2000;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(5px);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#lightbox-img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  user-select: none; 
}

#lightbox-caption {
  color: var(--secondary-text);
  margin-top: 10px;
  font-size: 1rem;
  text-align: center;
}

.lightbox-btn {
  position: absolute;
  background: none;
  border: none;
  color: white;
  font-size: 2.5rem;
  cursor: pointer;
  padding: 10px 20px;
  transition: color 0.3s, transform 0.2s;
  z-index: 2001;
  outline: none;
}

.lightbox-btn:hover {
  color: var(--accent-color);
  transform: scale(1.1);
}

.lightbox-btn.close {
  top: 10px;
  right: 20px;
  font-size: 3rem;
}

.lightbox-btn.prev {
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-btn.next {
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
}

@media (max-width: 768px) {
  .lightbox-btn {
    font-size: 2rem;
    padding: 10px;
  }
  .lightbox-btn.prev, .lightbox-btn.next {
    background-color: rgba(0,0,0,0.3);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}
/* --- ESTILOS PARA VIDEO EN LIGHTBOX --- */
.lightbox-video-container {
  display: none; /* Oculto por defecto */
  width: 80vw;
  height: 45vw; /* Relación de aspecto 16:9 */
  max-width: 900px;
  max-height: 506px;
}

.lightbox-video-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Icono de Play sobre la miniatura */
.video-thumbnail-wrapper {
  position: relative;
  cursor: pointer;
  display: inline-block;
}

.video-thumbnail-wrapper::after {
  content: '\f144'; /* Icono de Play de FontAwesome */
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
  color: rgba(255, 255, 255, 0.8);
  pointer-events: none;
  text-shadow: 0 0 10px rgba(0,0,0,0.5);
  transition: transform 0.2s;
}

.video-thumbnail-wrapper:hover::after {
  transform: translate(-50%, -50%) scale(1.2);
  color: #ff0000; 
}

@media (max-width: 768px) {
  .lightbox-video-container {
    width: 90vw;
    height: 80vh; 
    max-height: none;
  }
}