/**
 * Nexus 26 - CSS Variables (Design Tokens)
 * International Clean Design System
 */

:root {
    /* ============================================
       COLOR PALETTE
       No pure black (#000) - use charcoal instead
       ============================================ */

    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-tertiary: #6B7280;
    --text-muted: #9CA3AF;
    --text-light: #D1D5DB;
    --text-inverse: #FFFFFF;

    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --bg-elevated: #FFFFFF;
    --bg-overlay: rgba(17, 24, 39, 0.5);

    /* Brand Colors */
    --accent: #005BEA;
    --accent-gradient: linear-gradient(135deg, #005BEA 0%, #00C6FB 100%);
    --accent-hover: #004E92;
    --accent-light: #E0F2FE;
    --accent-dark: #004E92;

    /* Status Colors - Pill Style */
    --status-new-bg: #DBEAFE;
    --status-new-text: #1E40AF;

    --status-contacted-bg: #E0E7FF;
    --status-contacted-text: #3730A3;

    --status-ready-bg: #FEF3C7;
    --status-ready-text: #92400E;

    --status-closed-bg: #D1FAE5;
    --status-closed-text: #065F46;

    --status-archived-bg: #F3F4F6;
    --status-archived-text: #4B5563;

    --status-cancelled-bg: #FEE2E2;
    --status-cancelled-text: #991B1B;

    --status-pending-bg: #FEF3C7;
    --status-pending-text: #92400E;

    /* Semantic Colors */
    --success: #10B981;
    --success-light: #D1FAE5;
    --success-dark: #059669;

    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --warning-dark: #D97706;

    --error: #EF4444;
    --error-light: #FEE2E2;
    --error-dark: #DC2626;

    --info: #3B82F6;
    --info-light: #DBEAFE;
    --info-dark: #2563EB;

    /* Border Colors */
    --border-light: #F5F6F7;
    --border-default: #ECEEF0;
    --border-dark: #D1D5DB;

    /* ============================================
       SPACING (8px Base Unit)
       ============================================ */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;

    /* ============================================
       TYPOGRAPHY
       ============================================ */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Font Sizes */
    --text-xs: 0.75rem;
    /* 12px */
    --text-sm: 0.875rem;
    /* 14px */
    --text-base: 1rem;
    /* 16px */
    --text-lg: 1.125rem;
    /* 18px */
    --text-xl: 1.25rem;
    /* 20px */
    --text-2xl: 1.5rem;
    /* 24px */
    --text-3xl: 1.875rem;
    /* 30px */
    --text-4xl: 2.25rem;
    /* 36px */

    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;

    /* ============================================
       SHADOWS (Soft, no harsh borders)
       ============================================ */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.08);
    --shadow-2xl: 0 16px 40px rgba(0, 0, 0, 0.12);
    --shadow-inner: inset 0 1px 3px rgba(0, 0, 0, 0.04);

    /* Colored Shadows */
    --shadow-accent: 0 2px 10px rgba(99, 102, 241, 0.2);
    --shadow-success: 0 2px 10px rgba(16, 185, 129, 0.2);
    --shadow-error: 0 2px 10px rgba(239, 68, 68, 0.2);

    /* ============================================
       BORDER RADIUS
       ============================================ */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* ============================================
       TRANSITIONS
       ============================================ */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms ease;

    /* ============================================
       Z-INDEX SCALE
       ============================================ */
    --z-dropdown: 1000;
    --z-sticky: 1100;
    --z-fixed: 1200;
    --z-modal-backdrop: 1300;
    --z-modal: 1400;
    --z-popover: 1500;
    --z-tooltip: 1600;
    --z-toast: 1700;

    /* ============================================
       LAYOUT
       ============================================ */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
    --header-height: 64px;
    --content-max-width: 1400px;

    /* ============================================
       GLASSMORPHISM
       ============================================ */
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-bg-dark: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-blur: blur(16px);
    --glass-blur-heavy: blur(24px);
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root.auto-dark {
        --text-primary: #F9FAFB;
        --text-secondary: #D1D5DB;
        --text-tertiary: #9CA3AF;
        --text-muted: #6B7280;

        --bg-primary: #111827;
        --bg-secondary: #1F2937;
        --bg-tertiary: #374151;
        --bg-elevated: #1F2937;

        --border-light: #374151;
        --border-default: #4B5563;
        --border-dark: #6B7280;

        --glass-bg: rgba(31, 41, 55, 0.7);
    }
}