:root {
  --bg-color: #f8f9fa;
  --text-color: #1f2937;
  --card-bg: #ffffff;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --border-color: #e5e7eb;
  --success: #10b981;
  --warning: #f59e0b;
  --color-red: #ef4444;
  --color-green: #10b981;
  --color-blue: #3b82f6;
  --color-purple: #8b5cf6;
  --color-pink: #ec4899;
}

body.dark-mode {
  --bg-color: #111827;
  --text-color: #f9fafb;
  --card-bg: #1f2937;
  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --border-color: #374151;
}

body {
  font-family: 'Inter', sans-serif;
  margin: 0;
  padding: 20px;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

.container {
  max-width: 600px;
  margin: 0 auto;
}

header {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 30px;
}

#ipv4, #ipv6 {
  word-break: break-all;
  overflow-wrap: anywhere;
  display: inline-block;
  max-width: 100%;
  vertical-align: top;
}

/* Shared styles for header buttons */
.theme-toggle,
.icon-btn {
  background: none;
  border: 2px solid var(--border-color);
  color: var(--text-color);
  padding: 0 12px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s;
  font-family: inherit;
  font-size: 1.2rem;
  /* Larger emoji */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  /* Enforce consistent height */
  box-sizing: border-box;
  min-width: 44px;
}

.theme-toggle {
  font-size: 0.9rem;
  /* Restore font size for theme text */
  gap: 6px;
}

.theme-toggle:hover,
.icon-btn:hover {
  background-color: var(--border-color);
}

.icon-btn.active {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  flex-wrap: wrap;
  gap: 10px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Vertical divider */
.vertical-divider {
  width: 1px;
  height: 24px;
  background: var(--border-color);
  margin: 0 4px;
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(90deg, var(--primary), #8b5cf6);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.test-card {
  background-color: var(--card-bg);
  padding: 24px;
  margin-bottom: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-color);
}

h2 {
  font-size: 1.1rem;
  margin-top: 0;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
}

label {
  font-weight: 500;
  display: block;
  margin-top: 12px;
  font-size: 0.9rem;
}

select.device-select,
textarea {
  width: 100%;
  padding: 10px;
  box-sizing: border-box;
  margin-top: 6px;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: inherit;
}

button {
  margin-top: 12px;
  margin-right: 8px;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  background-color: var(--primary);
  color: white;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:hover {
  background-color: var(--primary-hover);
}

button.stop {
  background-color: var(--danger);
}

button.stop:hover {
  background-color: var(--danger-hover);
}

video {
  width: 100%;
  background: #000;
  border-radius: 8px;
  margin-top: 12px;
}

.bar-container {
  width: 100%;
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 12px;
  position: relative;
}

.bar-fill {
  height: 100%;
  min-height: 100%;
  background: var(--success);
  width: 0%;
  transition: width 0.1s linear;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
}

/* Bar color utilities */
.bar-color-warning {
  background: var(--warning);
}

.bar-color-red {
  background: var(--color-red);
}

.bar-color-green {
  background: var(--color-green);
}

.bar-color-blue {
  background: var(--color-blue);
}

.bar-color-purple {
  background: var(--color-purple);
}

.bar-color-pink {
  background: var(--color-pink);
}

.status-text {
  font-size: 0.85rem;
  color: var(--text-color);
  opacity: 0.8;
  margin-top: 8px;
}

/* Screen Test Overlay */
#screen-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  z-index: 9999;
  cursor: crosshair;
}

#screen-instruction {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  padding: 20px;
  border-radius: 8px;
  pointer-events: none;
  text-align: center;
}

/* Custom CSS for new tests */
.mouse-area {
  width: 100%;
  height: 200px;
  background-color: var(--bg-color);
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  user-select: none;
  cursor: crosshair;
  transition: background-color 0.1s, color 0.1s;
}

.mouse-area.active-click {
  background-color: var(--primary);
  color: white;
}

.mouse-area-instruction {
  font-size: 1.2rem;
  font-weight: 500;
  opacity: 0.8;
  transition: opacity 0.1s;
  color: var(--text-color);
}

#mouse-instruction {
  font-size: 1.2rem;
  font-weight: 500;
  opacity: 0.8;
  color: var(--text-color);
  transition: opacity 0.1s, color 0.1s;
}

.mouse-stats {
  margin-top: 15px;
  font-size: 0.9rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.stat-box {
  background: var(--bg-color);
  padding: 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  text-align: center;
}

.stat-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
  margin-top: 4px;
}

.key-display {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  min-height: 50px;
  padding: 20px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-top: 10px;
  word-break: break-all;
}

.key-history {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-color);
  opacity: 0.8;
  max-height: 60px;
  overflow-y: auto;
}

.fps-display {
  font-size: 3rem;
  font-weight: 700;
  color: var(--success);
  text-align: center;
  margin: 20px 0;
}

/* Utility classes */
.nav-links-container {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.nav-link-btn {
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0 16px;
}

.sensor-row {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
}

.sensor-label {
  width: 80px;
}

.sensor-bar-container {
  flex: 1;
  margin-left: 10px;
  height: 8px;
  min-height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.sensor-value {
  margin-left: 10px;
  font-family: monospace;
  min-width: 80px;
}

.text-muted {
  opacity: 0.5;
}

.text-small {
  font-size: 0.9rem;
}

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

.mt-20 {
  margin-top: 20px;
}

.mt-0 {
  margin-top: 0;
}

.opacity-50 {
  opacity: 0.5;
}

.text-1-5 {
  font-size: 1.5rem;
}

.text-1-2 {
  font-size: 1.2rem;
}

.key-pressed {
  font-size: 1.2rem;
  color: var(--text-color);
}

/* Compass Styles */
.compass {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto;
  border-radius: 50%;
  background: var(--card-bg);
  border: 3px solid var(--border-color);
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.1);
}

.compass-bevel {
  position: absolute;
  top: 5px;
  left: 5px;
  right: 5px;
  bottom: 5px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
}

.compass-rose {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
}

.compass-tick {
  position: absolute;
  top: 0;
  left: 50%;
  width: 2px;
  height: 10px;
  background: var(--text-color);
  opacity: 0.6;
  transform-origin: 50% 100px;
}

.compass-tick.major {
  width: 3px;
  height: 15px;
  opacity: 0.8;
}

.compass-cardinal {
  position: absolute;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  transform-origin: 50% 100px;
  text-align: center;
  width: 30px;
  margin-left: -15px;
}

.compass-cardinal.north {
  color: var(--danger);
  font-weight: 800;
}

.compass-needle {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 80px;
  background: linear-gradient(to bottom, var(--danger) 0%, var(--danger) 80%, #888 80%, #888 100%);
  transform-origin: 50% 100%;
  transform: translate(-50%, -100%);
  transition: transform 0.1s ease-out;
  z-index: 10;
}

.compass-needle::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 15px solid var(--danger);
}

.compass-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 14px;
  background: var(--text-color);
  border-radius: 50%;
  z-index: 11;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.3);
}

.compass-info {
  margin-top: 20px;
  text-align: center;
  font-size: 1rem;
}

.compass-info strong {
  color: var(--primary);
}

footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.8;
}

footer a {
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.2s;
}

footer a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* Audio element styling */
.audio-controls {
  width: 100%;
  margin-top: 10px;
  display: none;
}

/* Responsive adjustments */
@media (max-width: 480px) {
  body {
    padding: 10px;
  }
  
  .header-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }
  
  .header-controls {
    width: 100%;
    justify-content: space-between;
  }
  
  .sensor-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }
  
  .sensor-label {
    width: auto;
  }
  
  .sensor-bar-container {
    margin-left: 0;
    width: 100%;
    height: 8px;
    min-height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    flex: none;
    display: block;
    position: relative;
  }
  
  .sensor-value {
    margin-left: 0;
    align-self: flex-end;
  }
}