/* ===============================
   Root Colors (Light + Dark Mode)
================================= */
:root {
  --color-background: #f3f8f4;
  --color-foreground: #102418;
  --color-primary: #2563eb;
  --color-primary-foreground: #ffffff;
  --color-secondary: #10b981;
  --color-card: #ffffff;
  --color-muted: #e7f0eb;
  --color-border: #cbd5ce;
}

[data-theme="dark"] {
  --color-background: #0b1e13;
  --color-foreground: #e3f2e7;
  --color-primary: #3b82f6;
  --color-primary-foreground: #ffffff;
  --color-secondary: #22c55e;
  --color-card: #123c25;
  --color-muted: #1a4731;
  --color-border: #2d5940;
}

/* ===============================
   Global Styles
================================= */
body {
  background-color: var(--color-background);
  color: var(--color-foreground);
  font-family: "Inter", sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* ===============================
   Navbar
================================= */
nav {
  background-color: var(--color-sidebar);
  color: var(--color-sidebar-foreground);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 50;
}

nav a {
  color: var(--color-sidebar-foreground);
  text-decoration: none;
  font-weight: 500;
  margin-left: 1rem;
  transition: color 0.3s ease;
}

nav a:hover { color: var(--color-primary); }
nav .brand { display: flex; align-items: center; gap: 0.75rem; }


/* ===============================
   Hero Section
================================= */
.hero-section {
  text-align: center;
  padding: 6rem 2rem;
  border-radius: 2rem;
  background: linear-gradient(135deg, #d4f7dc, #b2e5b8);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  margin-bottom: 4rem;
}

[data-theme="dark"] .hero-section {
  background: linear-gradient(135deg, #123c25, #0b2a18);
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-foreground);
  margin-bottom: 2rem;
}

.hero-buttons a {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 9999px;
  font-weight: 600;
  text-decoration: none;
  margin: 0 0.5rem;
  transition: all 0.2s ease;
}

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

.button-primary:hover {
  transform: scale(1.05);
  opacity: 0.95;
}

.button-secondary {
  background-color: var(--color-secondary);
  color: #fff;
}

.button-secondary:hover {
  transform: scale(1.05);
  opacity: 0.95;
}

/* ===============================
   How It Works Section
================================= */
.how-it-works-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 4rem;
}

.how-it-works-section img {
  width: 100%;
  border-radius: 1rem;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.how-it-works-section ol {
  padding-left: 1.5rem;
  list-style: decimal inside;
}

.how-it-works-section ol li {
  margin-bottom: 1rem;
  font-weight: 500;
}

/* ===============================
   Features Section
================================= */
.features-section {
  background-color: var(--color-card);
  padding: 4rem 2rem;
  border-radius: 2rem;
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  margin-bottom: 4rem;
}

.features-section h2 {
  text-align: center;
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: 2rem;
}

.features-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  font-size: 1rem;
}

.feature-item span {
  font-size: 2rem;
  color: var(--color-primary);
}

/* ===============================
   Benefits Section
================================= */
.benefits-section {
  display: flex;
  gap: 3rem;
  align-items: center;
  margin-bottom: 4rem;
}

.benefits-section img {
  width: 100%;
  border-radius: 1rem;
  box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.benefits-text {
  flex: 1;
}

.benefits-text h2 {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.benefits-text ul {
  list-style: disc inside;
  margin-top: 1rem;
}

.benefits-text li {
  margin-bottom: 0.5rem;
}

/* ===============================
   CTA Section
================================= */
.cta-section {
  text-align: center;
  padding: 4rem 2rem;
  border-radius: 2rem;
  background: linear-gradient(135deg, var(--color-secondary) 20%, var(--color-primary) 70%);
  color: var(--color-primary-foreground);
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

.cta-section h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.cta-buttons a {
  margin: 0 0.5rem;
}

/* ===============================
   Responsive
================================= */
@media (max-width: 992px) {
  .how-it-works-section {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .features-list {
    grid-template-columns: 1fr;
  }
  .benefits-section {
    flex-direction: column;
  }
  .hero-title { font-size: 2.5rem; }
  .hero-subtitle { font-size: 1.1rem; }
  .cta-section h2 { font-size: 2rem; }
}


/* ===============================
   Upload Form
================================= */
#upload form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#upload input[type="file"] {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--color-input);
  border-radius: 0.5rem;
  font-size: 0.9rem;
}

#upload button {
  background-color: var(--color-primary);
  color: var(--color-primary-foreground);
  border: none;
  border-radius: 0.5rem;
  padding: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

#upload button:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

/* ===============================
   Camera Section
================================= */
#camera video, #camera canvas {
  width: 100%;
  max-width: 480px;
  border-radius: 0.75rem;
  border: 2px solid var(--color-border);
  display: block;
  margin: 0 auto;
}

#camera .flex {
  display: flex;
  justify-content: center;
  margin-top: 1rem;
}

#captureBtn {
  background-color: var(--color-primary);
  color: var(--color-primary-foreground);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

#captureBtn:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

/* ===============================
   Responsive
================================= */
@media (max-width: 768px) {
  .max-w-3xl {
    padding: 1rem;
  }

  #camera video, #camera canvas {
    max-width: 100%;
  }
}



.max-w-3xl {
  max-width: 768px;
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
}

/* ===============================
   Uploaded Image
================================= */
.uploaded-image {
  max-width: 100%;
  max-height: 400px;
  border-radius: 1rem;
  border: 2px solid var(--color-border);
  box-shadow: 0 6px 15px rgba(0,0,0,0.08);
  object-fit: contain;
}

/* ===============================
   Prediction Card
================================= */
.prediction-card, .bg-white {
  background-color: var(--color-card);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 6px 15px rgba(0,0,0,0.08);
  border: 1px solid var(--color-border);
}

.prediction-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-success);
}

.prediction-card p {
  font-size: 1rem;
  color: var(--color-foreground);
}

/* ===============================
   Raw JSON Output
================================= */
pre {
  background-color: var(--color-card);
  padding: 1rem;
  border-radius: 1rem;
  border: 1px solid var(--color-border);
  font-family: "Courier New", monospace;
  font-size: 0.875rem;
  color: var(--color-foreground);
  max-height: 400px;
  overflow: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* ===============================
   Back Button
================================= */
a.back-button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-success);
  color: var(--color-primary-foreground);
  border-radius: 0.5rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

a.back-button:hover {
  background-color: #059669; /* Slightly darker green */
  transform: scale(1.05);
}

/* ===============================
   Responsive
================================= */
@media (max-width: 768px) {
  .max-w-3xl {
    padding: 1rem;
  }

  .uploaded-image {
    max-height: 300px;
  }

  pre {
    max-height: 250px;
  }
}