:root {
  /* Light Mode - Inspired by shadcn/ui Zinc */
  --background-light: #ffffff;
  --foreground-light: #09090b;
  --card-light: #ffffff;
  --card-foreground-light: #09090b;
  --muted-light: #f4f4f5;
  --muted-foreground-light: #71717a;
  --primary-light: #09090b;
  --primary-foreground-light: #fafafa;
  --border-light: #e4e4e7;

  /* Dark Mode - Inspired by shadcn/ui Zinc */
  --background-dark: #09090b;
  --foreground-dark: #fafafa;
  --card-dark: #09090b;
  --card-foreground-dark: #fafafa;
  --muted-dark: #27272a;
  --muted-foreground-dark: #a1a1aa;
  --primary-dark: #fafafa;
  --primary-foreground-dark: #09090b;
  --border-dark: #27272a;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: var(--background-light);
  color: var(--foreground-light);
  transition: background-color 0.3s, color 0.3s;
  margin: 0;
  padding: 20px;
}

body.dark-mode {
  background-color: var(--background-dark);
  color: var(--foreground-dark);
}

.card {
  background-color: var(--card-light);
  color: var(--card-foreground-light);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 2rem;
  width: 90%;
  max-width: 400px;
  margin: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

body.dark-mode .card {
  background-color: var(--card-dark);
  color: var(--card-foreground-dark);
  border: 1px solid var(--border-dark);
}

.card-header {
  margin-bottom: 1.5rem;
}

.card-header h1 {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem 0;
}

.card-header p {
  font-size: 1rem;
  color: var(--muted-foreground-light);
  margin: 0;
}

body.dark-mode .card-header p {
  color: var(--muted-foreground-dark);
}

.card-content {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

#image-container {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  border: 2px dashed var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--muted-light);
  overflow: hidden;
}

body.dark-mode #image-container {
  border-color: var(--border-dark);
  background-color: var(--muted-dark);
}

#image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.button {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 1rem;
  font-weight: 500;
  transition: background-color 0.2s;
  border: none;
  width: 100%;
}

.button-primary {
  background-color: var(--primary-light);
  color: var(--primary-foreground-light);
}
.button-primary:hover {
  background-color: #333;
}

body.dark-mode .button-primary {
  background-color: var(--primary-dark);
  color: var(--primary-foreground-dark);
}
body.dark-mode .button-primary:hover {
  background-color: #ccc;
}


#label-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 50px;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  color: var(--muted-foreground-light);
}

body.dark-mode .result-item {
  color: var(--muted-foreground-dark);
}

.result-item .label {
  font-weight: 500;
  color: var(--foreground-light);
}
body.dark-mode .result-item .label {
  color: var(--foreground-dark);
}

.result-item .percent {
  font-weight: 600;
}

.ad-unit {
  margin: 1.5rem auto;
  text-align: center;
  max-width: 300px; /* Example max-width for ad unit */
}

.card-footer {
  width: 100%;
  margin-top: 2rem;
  text-align: center;
}

.button-ghost {
  background: none;
  border: 1px solid var(--border-light);
  color: var(--muted-foreground-light);
  font-weight: 500;
  width: auto;
}
body.dark-mode .button-ghost {
  border-color: var(--border-dark);
  color: var(--muted-foreground-dark);
}

.button-ghost:hover {
  background-color: var(--muted-light);
}
body.dark-mode .button-ghost:hover {
  background-color: var(--muted-dark);
}