body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

:root {
  --bg-color: #f0f2f5;
  --text-color: #333;
  --card-bg: white;
  --fab-bg: #007bff;
  --menu-bg: white;
  --menu-hover: #eee;
  --delete-icon-color: red;
}

.dark-mode {
  --bg-color: #121212;
  --text-color: #eee;
  --card-bg: #1e1e1e;
  --fab-bg: #0a84ff;
  --menu-bg: #1e1e1e;
  --menu-hover: #333;
  --delete-icon-color: #ff4d4d;
}

#loading-screen {
  text-align: center;
  background-color: #222;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  flex-direction: column;
}

.loading-bar {
  position: relative;
  width: 80vw;
  height: 30px;
  background: #444;
  margin: 30px auto;
  border-radius: 10px;
  overflow: hidden;
}

.runner {
  position: absolute;
  top: 3px;
  left: 0;
  width: 30px;
  height: 30px;
  display: block;
  background-image: url('Extra/giphy.gif');
  background-size: contain;
  background-repeat: no-repeat;
  animation: runAcross 3s linear forwards;
  z-index: 5;
}

.progress-ray {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background: linear-gradient(to right, #00f, #0ff);
  opacity: 0.6;
  border-radius: 10px;
  animation: fillRay 3s linear forwards;
  z-index: 1;
}

@keyframes fillRay {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes runAcross {
  from { left: 0; }
  to { left: calc(100% - 30px); }
}

#main-dashboard {
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: none;
  text-align: center;
}

.top-bar {
  position: fixed;
  display: flex;
  top: 0;
  left: 0;
  right: 0;
  padding: 1em 1.5em;
  width: 100%;
  justify-content: space-between;
  align-items: center;
  background-color: #222;
  color: white;
  z-index: 1000;
}

.menu-button {
  position: relative;
  cursor: pointer;
  font-size: 1.5em;
}

.menu-dropdown {
  display: none;
  position: absolute;
  top: 3em;
  right: 0;
  background: var(--menu-bg);
  border-radius: 6px;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
  z-index: 100;
}

.menu-dropdown button {
  display: block;
  padding: 0.5em 1em;
  border: none;
  background: var(--menu-bg);
  width: 100%;
  cursor: pointer;
  color: var(--text-color);
}

.menu-dropdown button:hover {
  background-color: var(--menu-hover);
}

.circuit-content {
  padding: 100px 20px 20px 20px;
  display: block;
  text-align: left;
  font-size: 1.1rem;
}

.fab-container {
  position: fixed;
  bottom: 2em;
  right: 2em;
}

.fab-button {
  background-color: var(--fab-bg);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 2em;
  width: 60px;
  height: 60px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.fab-menu {
  display: none;
  position: absolute;
  bottom: 70px;
  right: 0;
  background: var(--menu-bg);
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(160, 160, 160, 0.2);
  overflow: hidden;
  z-index: 10;
}

.fab-divider {
  margin: 0;
  border: none;
  border-top: 1px solid #ccc;
}

.fab-menu button {
  display: block;
  width: 100%;
  padding: 0.75em;
  border: none;
  background: var(--menu-bg);
  color: var(--text-color);
  cursor: pointer;
}

.fab-menu button:hover {
  background: var(--menu-hover);
}

@media (max-width: 500px) {
  .top-bar h2 {
    font-size: 1.2rem;
  }

  .fab-button {
    width: 50px;
    height: 50px;
    font-size: 1.5em;
  }
}

.circuit-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card-bg);
  padding: 15px 20px;
  margin: 10px 20px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.3s ease;
}

.circuit-card:hover {
  background: var(--menu-hover);
}

.circuit-name {
  flex-grow: 1;
  text-align: left;
}

.delete-icon {
  color: var(--delete-icon-color);
  font-size: 1.2rem;
  margin-left: 10px;
  cursor: pointer;
}

@media (max-width: 600px) {
  .top-bar h2 {
    font-size: 1rem;
  }

  .circuit-card {
    font-size: 1rem;
    padding: 12px;
    margin: 8px 10px;
  }

  .fab-button {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }

  .menu-button {
    font-size: 1.2rem;
  }

  .fab-menu button {
    font-size: 0.9rem;
  }
}

.import-json-label button {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 10px;
  font-size: 16px;
  cursor: pointer;
  color: var(--text-color);
}