:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-subtle: #eff6ff;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --surface-border: #e2e8f0;
  --text-title: #0f172a;
  --text-body: #475467;
  --text-muted: #64748b;
  --hero-bg: #ffffff;
  --hero-border: #e2e8f0;
  --pill-bg: #f8fafc;
  --pill-border: #e2e8f0;
  --callout-bg: #f8fafc;
  --card-bg: #ffffff;
}

/* Dark Mode Integration */
.dark,
.dark .gradio-container,
body.dark,
[data-theme='dark'] {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-subtle: rgba(37, 99, 235, 0.12);
  --surface: #0f172a;
  --surface-alt: #1e293b;
  --surface-border: #334155;
  --text-title: #f8fafc;
  --text-body: #cbd5e1;
  --text-muted: #94a3b8;
  --hero-bg: #1e293b;
  --hero-border: #334155;
  --pill-bg: #0f172a;
  --pill-border: #334155;
  --callout-bg: #0f172a;
  --card-bg: #1e293b;
}

.gradio-container {
  max-width: 1140px !important;
  margin: 0 auto !important;
  padding: 24px 16px 40px !important;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif !important;
}

.app-shell {
  width: 100%;
}

/* Professional Hero Section */
.hero {
  padding: 32px 36px;
  margin-bottom: 24px;
  border-radius: 16px;
  background: var(--hero-bg);
  border: 1px solid var(--hero-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background: var(--primary-subtle);
  border: 1px solid var(--surface-border);
  border-radius: 6px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: var(--surface-alt);
  border: 1px solid var(--surface-border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
}

.hero-main {
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(28px, 4vw, 36px) !important;
  font-weight: 700 !important;
  line-height: 1.2 !important;
  margin: 0 0 10px 0 !important;
  color: var(--text-title) !important;
  letter-spacing: -0.02em !important;
}

.title-accent {
  color: var(--primary);
}

.hero-subtitle {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-body);
  margin: 0;
  max-width: 800px;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  border-radius: 6px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-muted);
}

/* Primary Button Styling */
.gradio-container .gr-button-primary,
button.primary-btn {
  background: var(--primary) !important;
  color: #ffffff !important;
  border: none !important;
  border-radius: 8px !important;
  font-size: 15px !important;
  font-weight: 600 !important;
  letter-spacing: 0.01em !important;
  padding: 12px 20px !important;
  min-height: 46px !important;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05) !important;
  transition: background-color 0.15s ease, transform 0.1s ease !important;
  cursor: pointer !important;
}

.gradio-container .gr-button-primary:hover,
button.primary-btn:hover {
  background: var(--primary-hover) !important;
  transform: translateY(-1px);
}

.gradio-container .gr-button-primary:active,
button.primary-btn:active {
  transform: translateY(0);
}

/* Verdict Result Card */
.result-card {
  padding: 22px 24px !important;
  border-radius: 12px !important;
  border: 1px solid var(--surface-border) !important;
  background: var(--card-bg) !important;
  color: var(--text-title) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05) !important;
  min-height: 170px;
}

.result-card h2 {
  font-size: 22px !important;
  font-weight: 700 !important;
  margin-top: 0 !important;
  margin-bottom: 12px !important;
  letter-spacing: -0.01em;
}

.result-badge-ai {
  color: #dc2626 !important;
}

.result-badge-human {
  color: #16a34a !important;
}

.card-callout {
  padding: 12px 16px;
  background: var(--callout-bg);
  border-left: 3px solid var(--primary);
  border-radius: 0 6px 6px 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-muted);
  margin-top: 14px;
}

/* Form Elements & Dropdowns (Guaranteed visibility in Light & Dark mode) */
.gradio-container select,
.gradio-container input,
.gradio-container textarea,
.gradio-container .gr-dropdown,
.gradio-container [data-testid="dropdown"] {
  border-radius: 8px !important;
  font-size: 14px !important;
}

/* Light Mode Input & Dropdown Fix */
:root:not(.dark) .gradio-container input,
:root:not(.dark) .gradio-container select,
:root:not(.dark) .gradio-container textarea,
:root:not(.dark) .gradio-container .gr-dropdown,
:root:not(.dark) .gradio-container .wrap,
:root:not(.dark) .gradio-container .secondary-wrap {
  color: #0f172a !important;
}

:root:not(.dark) .gradio-container input::placeholder,
:root:not(.dark) .gradio-container .single-select {
  color: #0f172a !important;
  font-weight: 500;
}

/* Dark Mode Input & Dropdown Overrides */
.dark .gradio-container input,
.dark .gradio-container select,
.dark .gradio-container textarea,
.dark .gradio-container .gr-dropdown,
.dark .gradio-container .single-select {
  color: #f8fafc !important;
}

.dark .gradio-container input::placeholder {
  color: #94a3b8 !important;
}

/* Slider, Checkbox & Form element accent */
.gradio-container input[type="range"] {
  accent-color: var(--primary) !important;
}

footer {
  display: none !important;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .hero {
    padding: 24px 20px;
    border-radius: 12px;
  }
  .hero-title {
    font-size: 24px !important;
  }
  .hero-subtitle {
    font-size: 13.5px;
  }
}