:root {
  --primary-color: #00ff9d;
  --secondary-color: #0a192f;
  --accent-color: #64ffda;
  --text-color: #8892b0;
  --card-bg: rgba(17, 34, 64, 0.95);
}

body {
  margin: 0;
  padding: 0;
  background: var(--secondary-color);
  font-family: "Fira Code", monospace;
  color: var(--text-color);
}

.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  padding: 1rem;
  z-index: 100;
}

.nav-home {
  color: var(--primary-color);
  font-size: 1.5rem;
  text-decoration: none;
  transition: transform 0.3s ease;
  touch-action: manipulation;
}

@media (max-width: 768px) {
  .nav-home {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
  }
}

.lab-container {
  max-width: 1200px;
  margin: 80px auto 2rem;
  padding: 2rem;
  padding-left: max(2rem, env(safe-area-inset-left));
  padding-right: max(2rem, env(safe-area-inset-right));
  box-sizing: border-box;
  width: 100%;
}

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

.lab-header h1 {
  color: var(--primary-color);
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.lab-header p {
  color: var(--accent-color);
  font-size: 1.2rem;
}

/* Estilos para las tarjetas de proyecto */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
  width: 100%;
}

.project-card {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 1.5rem;
  transition: transform 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

/* Eliminar o comentar estas reglas si existen */
/*.project-card::after {
  content: "Coming soon";
  position: absolute;
  ...
}*/

@media (hover: hover) and (pointer: fine) {
  .project-card:hover {
    transform: translateY(-5px);
  }
}

.project-header h3 {
  color: var(--primary-color);
  margin: 0 0 1rem 0;
}

.project-card-main {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.project-card-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 255, 157, 0.08);
  border: 1px solid rgba(0, 255, 157, 0.22);
  border-radius: 12px;
  color: var(--primary-color);
}

.project-card-icon-svg {
  width: 34px;
  height: 34px;
  display: block;
}

.project-card-body {
  flex: 1;
  min-width: 0;
}

.project-card-body .project-header h3 {
  margin-bottom: 0.65rem;
}

.project-card-body .project-tags {
  margin-bottom: 0.75rem;
}

.project-description p {
  margin: 0 0 1rem 0;
  line-height: 1.45;
  font-size: 0.9rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag {
  background: rgba(0, 255, 157, 0.1);
  color: var(--primary-color);
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-size: 0.8rem;
}

.visualization {
  height: 200px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
}

.interact-btn {
  background: transparent;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  padding: 0.5rem 1rem;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 44px;
  box-sizing: border-box;
  touch-action: manipulation;
}

@media (hover: hover) and (pointer: fine) {
  .interact-btn:hover {
    background: var(--primary-color);
    color: var(--secondary-color);
  }
}

/* Panel de control */
.control-panel {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 2rem;
  margin-top: 3rem;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-group label {
  color: var(--accent-color);
}

.control-group select,
.control-group input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--accent-color);
  color: var(--text-color);
  padding: 0.5rem;
  border-radius: 5px;
}

/* ——— Tablet ——— */
@media (max-width: 1024px) {
  .lab-container {
    padding: 1.5rem;
    padding-left: max(1.5rem, env(safe-area-inset-left));
    padding-right: max(1.5rem, env(safe-area-inset-right));
  }

  .projects-grid {
    gap: 1.5rem;
  }

  .project-card {
    padding: 1.25rem;
  }

  .control-panel {
    padding: 1.5rem;
  }
}

/* ——— Mobile ——— */
@media (max-width: 768px) {
  .lab-container {
    margin-top: 64px;
    margin-bottom: 1.5rem;
    padding: 1rem;
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
    padding-bottom: max(1rem, env(safe-area-inset-bottom));
  }

  .lab-header {
    margin-bottom: 2rem;
  }

  .lab-header h1 {
    font-size: clamp(1.5rem, 5vw, 2rem);
    line-height: 1.2;
  }

  .lab-header p {
    font-size: 0.95rem;
    line-height: 1.4;
    padding: 0 0.25rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 2rem;
  }

  .project-card {
    padding: 1.1rem;
    border-radius: 12px;
  }

  /* Tarjetas con icono + texto (Algorithm, Pathfinding, Circuit Lab) */
  .project-card-main {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.9rem;
  }

  .project-card-icon {
    width: 52px;
    height: 52px;
  }

  .project-card-body {
    width: 100%;
  }

  .project-card-body .project-tags {
    justify-content: center;
  }

  .project-card-body .project-header h3 {
    font-size: 1.1rem;
    line-height: 1.3;
  }

  .project-description p {
    font-size: 0.88rem;
  }

  .project-card .interact-btn {
    width: 100%;
    max-width: 100%;
  }

  /* Network & Real-time (sin project-card-main) */
  .project-card:not(:has(.project-card-main)) .project-header {
    text-align: center;
  }

  .project-card:not(:has(.project-card-main)) .project-tags {
    justify-content: center;
  }

  .project-card:not(:has(.project-card-main)) .project-description {
    text-align: center;
  }

  .project-card:not(:has(.project-card-main)) .interact-btn {
    width: 100%;
  }

  .visualization {
    height: min(180px, 42vw);
    min-height: 140px;
  }

  .control-panel {
    padding: 1.25rem;
    margin-top: 2rem;
    border-radius: 12px;
  }

  .controls-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* ——— Móvil estrecho ——— */
@media (max-width: 480px) {
  .top-nav {
    padding: 0.75rem;
    padding-left: max(0.75rem, env(safe-area-inset-left));
  }

  .lab-header h1 {
    font-size: 1.45rem;
  }

  .tag {
    font-size: 0.72rem;
    padding: 0.25rem 0.65rem;
  }

  .project-card-icon {
    width: 48px;
    height: 48px;
  }

  .project-card-icon-svg {
    width: 30px;
    height: 30px;
  }
}

/* Navegadores sin :has() — centrar tarjetas clásicas en móvil */
@supports not selector(:has(*)) {
  @media (max-width: 768px) {
    .project-card .project-header {
      text-align: center;
    }
    .project-card .project-tags {
      justify-content: center;
    }
    .project-card .project-description {
      text-align: center;
    }
    .project-card .interact-btn {
      width: 100%;
    }
  }
}