:root {
  --bg-color: #0b0c10;
  --card-bg: rgba(31, 40, 51, 0.6);
  --card-border: rgba(69, 162, 158, 0.3);
  --text-primary: #ffffff;
  --text-secondary: #c5c6c7;
  --accent: #66fcf1;
  --accent-hover: #45a29e;
  --ping-color: #fca311;
  --dl-color: #4cc9f0;
  --ul-color: #f72585;
}

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

body {
  background-color: var(--bg-color);
  background-image:
    radial-gradient(
      circle at 15% 50%,
      rgba(76, 201, 240, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 85% 30%,
      rgba(247, 37, 133, 0.08) 0%,
      transparent 50%
    );
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1000px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

header {
  text-align: center;
}

h1 {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 0.2rem;
}

h1 span {
  color: var(--accent);
}

header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.network-info {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  background: transparent;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.info-label {
  color: var(--text-primary);
  font-weight: 600;
}

.info-separator {
  color: var(--accent);
  margin: 0 0.5rem;
}

.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  width: 100%;
}

.metric-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 1.8rem 2rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: center;
  text-align: left;
  gap: 1.5rem;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.metric-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);
}

.chart-container {
  width: 100%;
  height: 220px;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
}
.chart-container:hover {
  transform: none; /* Disable hover float for the graph */
}

.metric-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

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

#ping-card .metric-icon svg {
  stroke: var(--ping-color);
}
#download-card .metric-icon svg {
  stroke: var(--dl-color);
}
#upload-card .metric-icon svg {
  stroke: var(--ul-color);
}

.metric-content {
  display: flex;
  flex-direction: column;
}

.metric-content h3 {
  font-size: 1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.2rem;
}

.value-container {
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  gap: 0.4rem;
}

.value {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.unit {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.unit-toggle {
  cursor: pointer;
  transition: color 0.3s ease;
}

.unit-toggle:hover {
  color: var(--accent);
}

.sub-metric {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
  opacity: 0.8;
}

.theme-toggle {
  position: absolute;
  top: 0;
  right: 0;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  transition: color 0.3s ease;
}

.theme-toggle:hover {
  color: var(--accent);
}

.theme-toggle svg {
  width: 24px;
  height: 24px;
}

/* Light Theme Overrides */
body.light-theme {
  --bg-color: #f0f4f8;
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-border: rgba(0, 0, 0, 0.1);
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --ping-color: #f59e0b;
  --dl-color: #0ea5e9;
  --ul-color: #e11d48;
  background-image:
    radial-gradient(
      circle at 15% 50%,
      rgba(14, 165, 233, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 85% 30%,
      rgba(225, 29, 72, 0.08) 0%,
      transparent 50%
    );
}

body.light-theme .metric-card {
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}
body.light-theme .metric-card:hover {
  box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.1);
}

body.light-theme .metric-icon {
  background: rgba(0, 0, 0, 0.05);
}

body.light-theme .start-btn {
  color: #ffffff;
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
}

body.light-theme .start-btn:hover:not(:disabled) {
  box-shadow: 0 0 30px rgba(37, 99, 235, 0.5);
}

body.light-theme .start-btn:disabled {
  background: rgba(0, 0, 0, 0.1);
  color: rgba(0, 0, 0, 0.3);
}

body.light-theme .progress-bar-bg {
  background: rgba(0, 0, 0, 0.1);
}

body.light-theme .network-info {
  background: transparent;
  border: none;
}

body.light-theme .github-link {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-secondary);
}

body.light-theme .github-link:hover {
  background: rgba(0, 0, 0, 0.1);
  color: var(--text-primary);
}

.control-panel {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1rem;
}

.status-container {
  width: 100%;
  max-width: 600px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  overflow: hidden;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--accent),
    var(--dl-color),
    var(--ul-color)
  );
  border-radius: 10px;
  transition: width 0.3s ease;
}

#status-text {
  color: var(--text-secondary);
  font-weight: 400;
  font-size: 1.1rem;
  min-height: 1.5rem;
  letter-spacing: 0.5px;
}

.start-btn {
  background: var(--accent);
  color: var(--bg-color);
  border: none;
  padding: 1.2rem 3.5rem;
  font-size: 1.2rem;
  font-weight: 800;
  border-radius: 30px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px rgba(102, 252, 241, 0.2);
}

.start-btn:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(102, 252, 241, 0.5);
}

.start-btn:disabled {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.3);
  cursor: not-allowed;
  box-shadow: none;
}

.app-footer {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  opacity: 0.8;
  letter-spacing: 0.5px;
}

.app-footer span {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 1px;
}

.github-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.4rem 1.2rem;
  border-radius: 20px;
  transition: all 0.3s ease;
}

.github-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.github-link svg {
  width: 16px;
  height: 16px;
}

/* Results Table */
.results-container {
  width: 100%;
  margin-top: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

body.light-theme .results-container {
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}

.results-container h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  text-align: center;
}

.table-wrapper {
  width: 100%;
  overflow-x: auto;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.results-table th,
.results-table td {
  padding: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  white-space: nowrap;
}

body.light-theme .results-table th,
body.light-theme .results-table td {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.results-table th {
  color: var(--text-primary);
  font-weight: 600;
}

/* Animations */
@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.1);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 0.7;
  }
}

.testing .metric-icon {
  animation: pulse 1.5s infinite ease-in-out;
}

#ping-card.testing .metric-icon {
  background: rgba(252, 163, 17, 0.2);
}
#download-card.testing .metric-icon {
  background: rgba(76, 201, 240, 0.2);
}
#upload-card.testing .metric-icon {
  background: rgba(247, 37, 133, 0.2);
}

/* Smartphone Responsiveness */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
    gap: 1.2rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  header p {
    font-size: 0.85rem;
  }
  
  .dashboard {
    grid-template-columns: repeat(3, 1fr); /* Side-by-side on mobile */
    gap: 0.5rem;
  }
  
  .metric-card {
    padding: 0.8rem 0.5rem;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.4rem;
    border-radius: 12px;
  }
  
  .metric-icon {
    display: none; /* Hide icons to save vertical space */
  }
  
  .metric-content h3 {
    font-size: 0.75rem;
  }
  
  .value-container {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }
  
  .value {
    font-size: 1.4rem;
    letter-spacing: 0;
  }
  
  .unit {
    font-size: 0.75rem;
  }
  
  .chart-container {
    height: 160px;
    padding: 0.8rem;
    border-radius: 12px;
  }
  
  .control-panel {
    gap: 1rem;
    margin-top: 0;
  }

  .start-btn {
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
    width: 100%;
  }
  
  .network-info {
    flex-direction: column;
    gap: 0.2rem;
    font-size: 0.8rem;
  }
  
  .info-separator {
    display: none;
  }

  .results-container {
    padding: 1rem;
    border-radius: 12px;
  }

  .results-container h2 {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
  }

  .results-table th, .results-table td {
    padding: 0.5rem;
    font-size: 0.75rem;
  }
}