:root {
  --quantum-blue: #0ff;
  --quantum-purple: #90f;
  --quantum-teal: #2dd;
  --dark-bg: #00101f;
  --panel-bg: rgba(5, 25, 45, 0.95);
  --border-color: rgba(0, 200, 255, 0.2);
  --card-bg: rgba(10, 35, 60, 0.7);
  --accent: #3b82f6;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}

a {
  color: lightblue;
}

body {
  background: var(--dark-bg);
  color: var(--text-primary);
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 12px;
  gap: 12px;
  background-image: radial-gradient(circle at 10% 20%, rgba(0, 100, 255, 0.1) 0%, transparent 20%),
    radial-gradient(circle at 90% 80%, rgba(150, 0, 255, 0.1) 0%, transparent 20%);
}

/* Header */
.header {
  background: var(--panel-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.header-content h1 {
  font-size: 1.5rem;
  background: linear-gradient(90deg, var(--quantum-blue), var(--quantum-purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
  font-family: "JetBrains Mono", monospace;
  margin-bottom: 4px;
}

.header-content p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  max-width: 500px;
}

.stats {
  display: flex;
  gap: 15px;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--quantum-teal);
  font-family: "JetBrains Mono", monospace;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Main Content */
.main-content {
  display: flex;
  flex: 1;
  min-height: 0;
  gap: 12px;
}

/* Control Panel */
.control-panel {
  background: var(--panel-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  width: 280px;
  flex-shrink: 0;
  overflow: hidden;
}

.panel-tabs {
  display: flex;
  background: rgba(10, 30, 50, 0.8);
  border-bottom: 1px solid var(--border-color);
}

.tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s ease;
  color: var(--text-secondary);
  border-bottom: 3px solid transparent;
}

.tab.active {
  color: var(--quantum-blue);
  border-bottom: 3px solid var(--quantum-blue);
  background: rgba(15, 40, 70, 0.4);
}

.tab-content {
  padding: 15px;
  overflow-y: auto;
  flex: 1;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card {
  background: var(--card-bg);
  border-radius: 10px;
  border: 1px solid var(--border-color);
  padding: 12px;
  margin-bottom: 12px;
}

.card-title {
  font-size: 0.95rem;
  color: var(--quantum-teal);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "JetBrains Mono", monospace;
}

.card-title i {
  font-size: 1.1rem;
}

.control-group {
  margin-bottom: 12px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  color: var(--text-primary);
}

input[type="range"] {
  width: 100%;
  height: 5px;
  background: rgba(0, 100, 200, 0.2);
  border-radius: 3px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--quantum-blue);
  cursor: pointer;
  box-shadow: 0 0 6px rgba(0, 200, 255, 0.8);
}

.value-display {
  display: inline-block;
  min-width: 35px;
  text-align: right;
  color: var(--quantum-teal);
  font-weight: 500;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

button {
  background: rgba(0, 60, 120, 0.4);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

button:hover {
  background: rgba(0, 100, 200, 0.6);
  transform: translateY(-2px);
}

button:active {
  transform: translateY(1px);
}

button.active {
  background: rgba(0, 150, 255, 0.7);
  box-shadow: 0 0 8px rgba(0, 200, 255, 0.4);
  border-color: var(--quantum-blue);
}

.algorithm-btn {
  background: linear-gradient(45deg, #ff6b6b, #ffa502) !important;
  color: #fff !important;
  border: none !important;
  font-weight: 600 !important;
}

.special-button {
  background: linear-gradient(45deg, #0fb9b1, #2d98da) !important;
  color: #fff !important;
  border: none !important;
  font-weight: 600 !important;
  padding: 10px !important;
  font-size: 0.9rem;
  margin-top: 8px;
}

/* Visualization Area */
.visualization {
  background: black;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  position: relative;
  flex: 1;
  min-width: 0;
  min-height: 0;
}

#quantumCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.algorithm-viz {
  position: absolute;
  bottom: 15px;
  left: 15px;
  background: rgba(0, 30, 60, 0.7);
  border-radius: 8px;
  padding: 12px;
  width: 280px;
  height: 130px;
}

.quantum-circuit {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
}

.circuit-line {
  position: absolute;
  height: 2px;
  background: rgba(0, 200, 255, 0.5);
  transform-origin: left center;
}

.gate {
  position: absolute;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  border: 2px solid var(--quantum-purple);
  border-radius: 5px;
  background: rgba(100, 0, 200, 0.3);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.9rem;
}

/* FPS Warning */
.fps-warning {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(200, 50, 50, 0.9);
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: bold;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  z-index: 1000;
  display: none;
}

/* Grover Target */
.grover-target {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 10;
}

/* Footer */
.footer {
  background: var(--panel-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  padding: 12px 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

.footer-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-item span {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.footer-item .value {
  color: var(--quantum-teal);
  font-weight: 600;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.95rem;
}

/* Info Panel */
.info-panel {
  background: rgba(0, 40, 80, 0.5);
  border-radius: 8px;
  padding: 12px;
  margin-top: 10px;
  border-left: 3px solid var(--quantum-teal);
  flex-shrink: 0;
}

.info-panel h3 {
  color: var(--quantum-blue);
  margin-bottom: 6px;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.info-panel p {
  color: #ccf;
  font-size: 0.85rem;
  line-height: 1.5;
}

.quantum-state {
  display: inline-block;
  padding: 2px 6px;
  background: rgba(0, 100, 200, 0.3);
  border-radius: 4px;
  font-family: "JetBrains Mono", monospace;
  color: var(--quantum-teal);
  margin: 4px 0;
  font-size: 0.85rem;
}

/* Real-world applications */
.applications-panel {
  background: rgba(0, 50, 100, 0.6);
  border-radius: 10px;
  padding: 15px;
  margin-top: 12px;
  border-top: 2px solid var(--quantum-purple);
}

.applications-panel h3 {
  color: var(--quantum-teal);
  margin-bottom: 10px;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.applications-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.application-tag {
  background: rgba(0, 150, 255, 0.3);
  border: 1px solid rgba(100, 200, 255, 0.3);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.8rem;
}

/* Responsive Adjustments */
@media (max-width: 1200px) {
  .control-panel {
    width: 250px;
  }
}

@media (max-width: 900px) {
  .main-content {
    flex-direction: column;
  }

  .control-panel {
    width: 100%;
    max-height: 300px;
  }

  .header {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }

  .header-content {
    width: 100%;
  }

  .stats {
    justify-content: center;
  }

  .algorithm-viz {
    width: 250px;
    height: 120px;
  }
}

@media (max-width: 600px) {
  .header-content h1 {
    font-size: 1.3rem;
  }

  .header-content p {
    font-size: 0.8rem;
  }

  .stat-value {
    font-size: 1rem;
  }

  .footer {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }

  .algorithm-viz {
    width: 200px;
    height: 100px;
    bottom: 10px;
    left: 10px;
  }
}

@media (max-width: 480px) {
  .panel-tabs {
    flex-wrap: wrap;
  }

  .tab {
    min-width: 33.33%;
    font-size: 0.8rem;
    padding: 8px;
  }

  .button-grid {
    grid-template-columns: 1fr;
  }

  .algorithm-viz {
    position: relative;
    width: 100%;
    height: 100px;
    bottom: 0;
    left: 0;
    margin-top: 10px;
  }
}