/* ============================================
   FactSpark Design System - OKLCH Colors
   60/30/10 Color Rule Implementation
   Issue #219: Apply factspark.io styling to analyze.factspark.io
   ============================================ */

:root {
  /* ========== 60% - Neutral Backgrounds ========== */
  --color-background: oklch(1 0 0);           /* Pure white */
  --color-card: oklch(0.98 0 0);              /* Off-white card backgrounds */
  --color-muted: oklch(0.96 0 0);             /* Subtle background */
  --color-input: oklch(0.98 0 0);             /* Input field backgrounds */

  /* ========== 30% - Text & Borders ========== */
  --color-foreground: oklch(0.145 0 0);       /* Primary text (dark) */
  --color-muted-foreground: oklch(0.455 0 0); /* Secondary text (gray) */
  --color-border: oklch(0.898 0 0);           /* Subtle borders */

  /* ========== 10% - FactSpark Brand Accent ========== */
  --color-primary: oklch(0.502 0.2 234.38);   /* FactSpark blue */
  --color-primary-foreground: oklch(1 0 0);   /* White text on primary */
  --color-accent: oklch(0.502 0.2 234.38);    /* Accent (same as primary) */
  --color-accent-foreground: oklch(1 0 0);    /* White text on accent */

  /* ========== Stupidity Rating Colors ========== */
  --color-success: oklch(0.7 0.15 142.5);          /* Green: <40 (Smart) */
  --color-success-foreground: oklch(0.145 0 0);    /* Dark text on green */
  --color-secondary: oklch(0.6 0.05 67.5);         /* Gray: 40-60 (Moderate) */
  --color-secondary-foreground: oklch(0.145 0 0);  /* Dark text on gray */
  --color-warning: oklch(0.8 0.15 67.5);           /* Orange: 60-80 (Questionable) */
  --color-warning-foreground: oklch(0.145 0 0);    /* Dark text on orange */
  --color-destructive: oklch(0.65 0.2 29.7);       /* Red: 80+ (Catastrophic) */
  --color-destructive-foreground: oklch(1 0 0);    /* White text on red */

  /* ========== 8pt Grid Spacing System ========== */
  --spacing-1: 0.5rem;   /* 8px - Small gaps, tag padding */
  --spacing-2: 1rem;     /* 16px - Card padding, button spacing */
  --spacing-3: 1.5rem;   /* 24px - Section spacing, card margins */
  --spacing-4: 2rem;     /* 32px - Large sections */
  --spacing-5: 2.5rem;   /* 40px - Extra large spacing */
  --spacing-6: 3rem;     /* 48px - Hero sections, main layouts */

  /* ========== Typography System ========== */
  /* Mobile-first sizing */
  --font-size-size-1: 2rem;      /* 32px - Hero titles */
  --font-size-size-2: 1.25rem;   /* 20px - Article titles */
  --font-size-size-3: 0.95rem;   /* 15.2px - Body text */
  --font-size-size-4: 0.8rem;    /* 12.8px - Metadata/labels */

  /* Border Radius */
  --radius-sm: 0.375rem;   /* 6px - Small elements */
  --radius-md: 0.625rem;   /* 10px - Cards, buttons */
  --radius-lg: 0.75rem;    /* 12px - Large containers */

  /* Box Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.16);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Desktop typography overrides (48rem = 768px) */
@media (min-width: 48rem) {
  :root {
    --font-size-size-1: 2.5rem;    /* 40px */
    --font-size-size-2: 1.5rem;    /* 24px */
    --font-size-size-3: 1rem;      /* 16px */
    --font-size-size-4: 0.875rem;  /* 14px */
  }
}

/* ========== Typography Classes ========== */
.text-size-1 {
  font-size: var(--font-size-size-1);
  font-weight: 600;
  line-height: 1.2;
}

.text-size-2 {
  font-size: var(--font-size-size-2);
  font-weight: 600;
  line-height: 1.3;
}

.text-size-3 {
  font-size: var(--font-size-size-3);
  font-weight: 400;
  line-height: 1.5;
}

.text-size-4 {
  font-size: var(--font-size-size-4);
  font-weight: 400;
  line-height: 1.4;
}

/* ========== Stupidity Rating Badge Styles ========== */
.rating-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-size-3);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-md);
  min-width: 40px;
  min-height: 32px;
  transition: opacity var(--transition-fast);
}

.rating-brilliant {
  background-color: var(--color-success);
  color: var(--color-success-foreground);
}

.rating-smart {
  background-color: var(--color-success);
  color: var(--color-success-foreground);
  opacity: 0.8;
}

.rating-moderate {
  background-color: var(--color-secondary);
  color: var(--color-secondary-foreground);
}

.rating-questionable {
  background-color: var(--color-warning);
  color: var(--color-warning-foreground);
}

.rating-catastrophic {
  background-color: var(--color-destructive);
  color: var(--color-destructive-foreground);
}

/* ========== Card Component ========== */
.card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  margin-bottom: var(--spacing-3);
}

.card-title {
  font-size: var(--font-size-size-2);
  font-weight: 600;
  color: var(--color-foreground);
  margin-bottom: var(--spacing-1);
}

.card-description {
  font-size: var(--font-size-size-3);
  color: var(--color-muted-foreground);
  line-height: 1.5;
}

/* ========== Button Component ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-size-3);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

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

.btn-primary:hover {
  background-color: oklch(0.45 0.2 234.38); /* Darker blue */
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-secondary-foreground);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-foreground);
}

.btn-outline:hover {
  background-color: var(--color-muted);
}

/* ========== Focus Indicators (Accessibility) ========== */
.focus-indicator:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-background),
              0 0 0 4px var(--color-primary);
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-background),
              0 0 0 4px var(--color-primary);
}

/* ========== Responsive Container ========== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-3);
}

@media (max-width: 48rem) {
  .container {
    padding: 0 var(--spacing-2);
  }
}