/* Standalone styles for information-gain tool (Tailwind not available) */
:root {
  --cream-50: #fefcf8;
  --cream-100: #faf8f4;
  --cream-200: #f5f3ed;
  --cream-300: #e5d9c8;
  --cream-400: #d4c5a9;
  --cream-500: #9ca3af;
  --warm-500: #8b7355;
  --warm-700: #5c4a3a;
  --warm-800: #3d2e1f;
  --warm-850: #2a1f15;
  --warm-900: #1a120a;
  --warm-950: #0d0905;
  --amber: #f59e0b;
  --amber-bright: #fbbf24;
  --amber-100: #fef3c7;
  --amber-900: #78350f;
  --red-50: #fef2f2;
  --red-300: #fca5a5;
  --red-600: #dc2626;
  --red-700: #b91c1c;
  --red-800: #991b1b;
  --red-900: #7f1d1d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--cream-200);
  color: var(--warm-800);
  line-height: 1.6;
}

.bg-cream-200 { background: var(--cream-200); }
.bg-cream-100 { background: var(--cream-100); }
.bg-cream-200 { background: var(--cream-200); }
.bg-amber { background: var(--amber); }
.bg-amber-100 { background: var(--amber-100); }
.bg-red-50 { background: var(--red-50); }

.text-warm-800 { color: var(--warm-800); }
.text-warm-700 { color: var(--warm-700); }
.text-warm-500 { color: var(--warm-500); }
.text-cream-200 { color: var(--cream-200); }
.text-cream-300 { color: var(--cream-200); }
.text-cream-500 { color: var(--cream-500); }
.text-warm-900 { color: var(--warm-900); }
.text-red-700 { color: var(--red-700); }
.text-red-600 { color: var(--red-600); }
.text-amber { color: var(--amber); }
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-3xl { font-size: 1.875rem; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.border { border: 1px solid; }
.border-cream-400 { border-color: var(--cream-400); }
.border-cream-300 { border-color: var(--cream-300); }
.border-red-300 { border-color: var(--red-300); }
.border-amber-300 { border-color: var(--amber); }
.border-b-2 { border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: var(--amber); }

.rounded-md { border-radius: 0.375rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded { border-radius: 0.25rem; }

.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-5 { padding-left: 1.25rem; padding-right: 1.25rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.pb-8 { padding-bottom: 2rem; }

.mx-auto { margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }

.w-full { width: 100%; }
.max-w-4xl { max-width: 56rem; }
.max-w-lg { max-width: 32rem; }

.block { display: block; }
.hidden { display: none; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.grid { display: grid; }
.gap-2 { gap: 0.5rem; }
.gap-12 { gap: 3rem; }
.grid-cols-1 { grid-template-columns: 1fr; }

input {
  outline: none;
  transition: box-shadow 0.15s;
}
input:focus {
  box-shadow: 0 0 0 2px var(--amber);
}

button:not([onclick]) {
  cursor: pointer;
}
button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.font-mono {
  font-family: "SF Mono", "Monaco", "Inconsolata", "Fira Mono", "Droid Sans Mono", monospace;
}

.leading-relaxed { line-height: 1.625; }
.leading-relaxed p { margin: 0 0 0.75rem; }

.uppercase { text-transform: uppercase; }
.tracking-wider { letter-spacing: 0.05em; }

.shadow-sm { box-shadow: 0 1px 2px rgba(0,0,0,0.05); }

.overflow-hidden { overflow: hidden; }

a { color: var(--amber); text-decoration: underline; }
a:hover { text-decoration: none; }

.antialiased { -webkit-font-smoothing: antialiased; }

mark {
  background: var(--amber-100);
  padding: 0 2px;
}

/* Responsive: two-column results on desktop */
@media (min-width: 768px) {
  .md\\:grid-cols-2 { grid-template-columns: 1fr 1fr; }
  .md\\:border-b-0 { border-bottom: none !important; }
  .md\\:border-r { border-right: 1px solid var(--cream-400); }
  .sm\\:max-w-2xl { max-width: 42rem; }
  .sm\\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
  .sm\\:px-8 { padding-left: 2rem; padding-right: 2rem; }
  .md\\:max-w-6xl { max-width: 72rem; }
}

@media (prefers-color-scheme: dark) {
  .dark\\:bg-warm-950 { background: var(--warm-950); }
  .dark\\:bg-warm-850 { background: var(--warm-850); }
  .dark\\:bg-warm-800 { background: var(--warm-900); }
  .dark\\:bg-amber-900\\/40 { background: rgba(120, 53, 15, 0.4); }
  .dark\\:bg-red-900\\/20 { background: rgba(127, 29, 29, 0.2); }
  .dark\\:text-cream-200 { color: var(--cream-200); }
  .dark\\:text-cream-300 { color: var(--cream-200); }
  .dark\\:text-cream-400\\/60 { color: rgba(250, 248, 244, 0.6); }
  .dark\\:text-cream-500 { color: var(--cream-500); }
  .dark\\:text-warm-900 { color: var(--warm-900); }
  .dark\\:text-red-300 { color: var(--red-300); }
  .dark\\:text-red-400 { color: #f87171; }
  .dark\\:text-amber-bright { color: var(--amber-bright); }
  .dark\\:border-warm-800 { border-color: var(--warm-850); }
  .dark\\:border-warm-700 { border-color: var(--warm-700); }
  .dark\\:border-red-800 { border-color: var(--red-800); }
  .dark\\:bg-amber-bright { background: var(--amber-bright); }
  .dark\\:hover\\:bg-amber-bright\\/90:hover { background: rgba(251, 191, 36, 0.9); }
  .dark\\:focus\\:ring-amber-bright:focus { box-shadow: 0 0 0 2px var(--amber-bright); }
}

/* Change cards */
.changes-header {
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--cream-300);
}

.change-card {
  margin-bottom: 1.5rem;
  border: 1px solid var(--cream-400);
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--cream-100);
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.change-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--cream-200);
  border-bottom: 1px solid var(--cream-400);
}
.change-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--amber);
}
.change-card-num {
  font-size: 0.75rem;
  color: var(--cream-500);
}
.change-card-col {
  padding: 1rem;
}
.change-card-original {
  border-right: 1px solid var(--cream-300);
}
.change-card-label {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cream-500);
  margin-bottom: 0.5rem;
}
.change-card-text {
  font-size: 0.875rem;
  color: var(--warm-800);
  line-height: 1.625;
}
.change-card-source-wrap {
  margin-top: 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--cream-400);
}
.change-card-source {
  font-size: 0.75rem;
  color: var(--amber);
  text-decoration: underline;
}
.change-card-source:hover {
  text-decoration: none;
}

@media (prefers-color-scheme: dark) {
  .change-card {
    background: var(--warm-850);
    border-color: var(--warm-800);
  }
  .change-card-header {
    background: var(--warm-900);
    border-color: var(--warm-800);
  }
  .change-card-original {
    border-color: var(--warm-800);
  }
  .change-card-text {
    color: var(--cream-200);
  }
  .change-card-source {
    color: var(--amber-bright);
  }
  .change-card-source-wrap {
    border-color: var(--warm-700);
  }
  .changes-header {
    border-color: var(--warm-800);
  }
}

@media (max-width: 767px) {
  .change-card-original {
    border-right: none;
    border-bottom: 1px solid var(--cream-300);
    padding-bottom: 0.75rem;
  }
  .change-card-enriched {
    padding-top: 0.75rem;
  }
}