/**
 * Design Tokens - BeepBeep AI
 * Premium SaaS Design System
 *
 * Version: 8.0.0
 * Last Updated: 2026-01-14
 */

:root {
    /* ========================================
       BRAND COLORS - Premium Teal
       ======================================== */

    --bbai-primary: #10B981;
    --bbai-primary-hover: #059669;
    --bbai-primary-dark: #047857;
    --bbai-primary-light: #D1FAE5;
    --bbai-primary-soft: rgba(16, 185, 129, 0.08);
    --bbai-primary-glow: rgba(16, 185, 129, 0.15);
    --bbai-primary-gradient: linear-gradient(135deg, #10B981 0%, #059669 100%);

    /* ========================================
       STATUS COLORS - Refined Palette
       ======================================== */

    --bbai-success: #10b981;
    --bbai-success-light: #d1fae5;
    --bbai-success-bg: #ecfdf5;
    --bbai-success-dark: #059669;

    --bbai-warning: #f59e0b;
    --bbai-warning-light: #fef3c7;
    --bbai-warning-bg: #fffbeb;
    --bbai-warning-dark: #d97706;

    --bbai-error: #ef4444;
    --bbai-error-light: #fee2e2;
    --bbai-error-bg: #fef2f2;
    --bbai-danger: var(--bbai-error);
    --bbai-danger-light: var(--bbai-error-light);
    --bbai-danger-bg: var(--bbai-error-bg);

    --bbai-info: #3b82f6;
    --bbai-info-light: #dbeafe;
    --bbai-info-bg: #eff6ff;
    --bbai-info-dark: #2563eb;

    /* ========================================
       NEUTRAL COLORS - Refined Grays
       ======================================== */

    --bbai-gray-50: #f9fafb;
    --bbai-gray-100: #f3f4f6;
    --bbai-gray-200: #e5e7eb;
    --bbai-gray-300: #d1d5db;
    --bbai-gray-400: #9ca3af;
    --bbai-gray-500: #6b7280;
    --bbai-gray-600: #4b5563;
    --bbai-gray-700: #374151;
    --bbai-gray-800: #1f2937;
    --bbai-gray-900: #111827;
    --bbai-gray-950: #030712;

    --bbai-white: #ffffff;
    --bbai-black: #000000;

    /* ========================================
       SEMANTIC COLORS
       ======================================== */

    --bbai-text: #111827;
    --bbai-text-primary: #111827;
    --bbai-text-secondary: #374151;
    --bbai-text-muted: #6b7280;
    --bbai-text-light: #9ca3af;
    --bbai-text-inverse: #ffffff;

    --bbai-bg: #ffffff;
    --bbai-bg-primary: #ffffff;
    --bbai-bg-secondary: #f9fafb;
    --bbai-bg-tertiary: #f3f4f6;
    --bbai-bg-page: #f5f7fa;
    --bbai-bg-card: #ffffff;
    --bbai-bg-elevated: #ffffff;

    --bbai-border: #e5e7eb;
    --bbai-border-primary: #e5e7eb;
    --bbai-border-secondary: #d1d5db;
    --bbai-border-focus: var(--bbai-primary);

    /* Dark surfaces for premium cards */
    --bbai-surface-dark: #0f172a;
    --bbai-surface-dark-lighter: #1e293b;
    --bbai-surface-teal: #134e4a;
    --bbai-surface-teal-lighter: #115e59;

    /* ========================================
       PREMIUM GRADIENTS
       ======================================== */

    --bbai-gradient-primary: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --bbai-gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --bbai-gradient-info: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    --bbai-gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --bbai-gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);

    /* Premium accent gradients */
    --bbai-gradient-teal-dark: linear-gradient(135deg, #134e4a 0%, #0d3d3d 100%);
    --bbai-gradient-indigo: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%);
    --bbai-gradient-purple: linear-gradient(135deg, #7C3AED 0%, #8B5CF6 100%);
    --bbai-gradient-blue: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);

    /* Usage card gradient */
    --bbai-gradient-usage: #ffffff;
    /* Upsell card gradient */
    --bbai-gradient-upsell: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
    /* Agency gradient */
    --bbai-gradient-agency: linear-gradient(135deg, #7C3AED 0%, #9333EA 100%);

    /* ========================================
       TYPOGRAPHY - Premium System Font Stack
       ======================================== */

    --bbai-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --bbai-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --bbai-font-mono: 'JetBrains Mono', 'SF Mono', Monaco, Consolas, monospace;
    --bbai-font-family-mono: var(--bbai-font-mono);

    /* Font Sizes - Refined Scale */
    --bbai-text-xs: 0.75rem;      /* 12px */
    --bbai-text-sm: 0.875rem;     /* 14px */
    --bbai-text-base: 1rem;       /* 16px */
    --bbai-text-lg: 1.125rem;     /* 18px */
    --bbai-text-xl: 1.25rem;      /* 20px */
    --bbai-text-2xl: 1.5rem;      /* 24px */
    --bbai-text-3xl: 1.875rem;    /* 30px */
    --bbai-text-4xl: 2.25rem;     /* 36px */
    --bbai-text-5xl: 3rem;        /* 48px */

    /* Font Weights */
    --bbai-font-normal: 400;
    --bbai-font-medium: 500;
    --bbai-font-semibold: 600;
    --bbai-font-bold: 700;
    --bbai-font-extrabold: 800;

    /* Line Heights */
    --bbai-leading-none: 1;
    --bbai-leading-tight: 1.25;
    --bbai-leading-snug: 1.375;
    --bbai-leading-normal: 1.5;
    --bbai-leading-relaxed: 1.625;
    --bbai-leading-loose: 2;

    /* Letter Spacing */
    --bbai-tracking-tighter: -0.05em;
    --bbai-tracking-tight: -0.025em;
    --bbai-tracking-normal: 0;
    --bbai-tracking-wide: 0.025em;
    --bbai-tracking-wider: 0.05em;
    --bbai-tracking-widest: 0.1em;

    /* ========================================
       SPACING - 4px Grid
       ======================================== */

    --bbai-space-0: 0;
    --bbai-space-px: 1px;
    --bbai-space-0-5: 0.125rem;   /* 2px */
    --bbai-space-1: 0.25rem;      /* 4px */
    --bbai-space-1-5: 0.375rem;   /* 6px */
    --bbai-space-2: 0.5rem;       /* 8px */
    --bbai-space-2-5: 0.625rem;   /* 10px */
    --bbai-space-3: 0.75rem;      /* 12px */
    --bbai-space-3-5: 0.875rem;   /* 14px */
    --bbai-space-4: 1rem;         /* 16px */
    --bbai-space-5: 1.25rem;      /* 20px */
    --bbai-space-6: 1.5rem;       /* 24px */
    --bbai-space-7: 1.75rem;      /* 28px */
    --bbai-space-8: 2rem;         /* 32px */
    --bbai-space-9: 2.25rem;      /* 36px */
    --bbai-space-10: 2.5rem;      /* 40px */
    --bbai-space-11: 2.75rem;     /* 44px */
    --bbai-space-12: 3rem;        /* 48px */
    --bbai-space-14: 3.5rem;      /* 56px */
    --bbai-space-16: 4rem;        /* 64px */
    --bbai-space-20: 5rem;        /* 80px */
    --bbai-space-24: 6rem;        /* 96px */

    /* Semantic Spacing */
    --bbai-spacing-xs: var(--bbai-space-1);
    --bbai-spacing-sm: var(--bbai-space-2);
    --bbai-spacing-md: var(--bbai-space-4);
    --bbai-spacing-lg: var(--bbai-space-6);
    --bbai-spacing-xl: var(--bbai-space-8);
    --bbai-spacing-2xl: var(--bbai-space-12);

    /* Cross-tab page rhythm (Dashboard-aligned; use only these for plugin shell spacing) */
    --page-padding-top: 24px;
    --section-spacing: 24px;
    --card-gap: 16px;

    /* ========================================
       BORDER RADIUS - Refined
       ======================================== */

    --bbai-radius-none: 0;
    --bbai-radius-sm: 0.25rem;    /* 4px */
    --bbai-radius: 0.5rem;        /* 8px */
    --bbai-radius-md: 0.625rem;   /* 10px */
    --bbai-radius-lg: 0.75rem;    /* 12px */
    --bbai-radius-xl: 1rem;       /* 16px */
    --bbai-radius-2xl: 1.25rem;   /* 20px */
    --bbai-radius-3xl: 1.5rem;    /* 24px */
    --bbai-radius-full: 9999px;

    /* ========================================
       SHADOWS - Premium Depth System
       ======================================== */

    /* Subtle elevation shadows */
    --bbai-shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --bbai-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.03);
    --bbai-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.03);
    --bbai-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    --bbai-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --bbai-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.07), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --bbai-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);

    /* Interactive shadows */
    --bbai-shadow-focus: 0 0 0 3px var(--bbai-primary-glow);
    --bbai-shadow-focus-error: 0 0 0 3px rgba(239, 68, 68, 0.15);

    /* Focus Ring System - Consistent across all interactive elements */
    --bbai-focus-ring-width: 2px;
    --bbai-focus-ring-offset: 2px;
    --bbai-focus-ring-color: var(--bbai-primary);
    --bbai-focus-ring: var(--bbai-focus-ring-width) solid var(--bbai-focus-ring-color);

    /* Component shadows */
    --bbai-shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
    --bbai-shadow-card-hover: 0 8px 16px -4px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --bbai-shadow-button: 0 1px 2px rgba(0, 0, 0, 0.05);
    --bbai-shadow-button-hover: 0 4px 8px -2px rgba(16, 185, 129, 0.25);
    --bbai-shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(0, 0, 0, 0.05);
    --bbai-shadow-dropdown: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.04);

    /* Colored glows */
    --bbai-glow-primary: 0 0 20px rgba(16, 185, 129, 0.2);
    --bbai-glow-info: 0 0 20px rgba(59, 130, 246, 0.2);
    --bbai-glow-purple: 0 0 20px rgba(124, 58, 237, 0.2);

    /* ========================================
       TRANSITIONS - Smooth & Premium
       ======================================== */

    --bbai-transition-fast: 150ms;
    --bbai-transition-base: 200ms;
    --bbai-transition-slow: 300ms;

    --bbai-ease-out: cubic-bezier(0.33, 1, 0.68, 1);
    --bbai-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    /* Restrained SaaS curve (no overshoot) — prefer for modals & premium surfaces */
    --bbai-ease-premium: cubic-bezier(0.2, 0.8, 0.2, 1);
    --bbai-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Shared micro-interaction timing */
    --bbai-motion-micro: 90ms;
    --bbai-motion-fast: 140ms;
    --bbai-motion-base: 180ms;
    --bbai-motion-slow: 420ms;

    --bbai-transition: all var(--bbai-transition-base) var(--bbai-ease-out);
    --bbai-transition-colors: color var(--bbai-transition-fast) var(--bbai-ease-out),
                              background-color var(--bbai-transition-fast) var(--bbai-ease-out),
                              border-color var(--bbai-transition-fast) var(--bbai-ease-out);
    --bbai-transition-transform: transform var(--bbai-transition-base) var(--bbai-ease-spring);

    /* ========================================
       Z-INDEX LAYERS
       ======================================== */

    --bbai-z-base: 0;
    --bbai-z-dropdown: 100;
    --bbai-z-sticky: 200;
    --bbai-z-fixed: 1030;
    --bbai-z-modal-backdrop: 1040;
    --bbai-z-modal: 1050;
    --bbai-z-popover: 1060;
    --bbai-z-tooltip: 1070;
    --bbai-z-notification: 1080;

    /* ========================================
       COMPONENT TOKENS
       ======================================== */

    /* Cards */
    --bbai-card-padding: var(--bbai-space-6);
    --bbai-card-padding-sm: var(--bbai-space-4);
    --bbai-card-padding-lg: var(--bbai-space-8);
    --bbai-card-radius: var(--bbai-radius-xl);
    --bbai-card-border: 1px solid var(--bbai-border);
    --bbai-card-bg: var(--bbai-bg);

    /* Buttons */
    --bbai-btn-padding-y: 0.625rem;
    --bbai-btn-padding-x: 1.25rem;
    --bbai-btn-padding-sm-y: 0.5rem;
    --bbai-btn-padding-sm-x: 1rem;
    --bbai-btn-padding-lg-y: 0.875rem;
    --bbai-btn-padding-lg-x: 1.75rem;
    --bbai-btn-radius: var(--bbai-radius);
    --bbai-btn-font-weight: var(--bbai-font-semibold);

    /* Forms */
    --bbai-input-padding-y: 0.625rem;
    --bbai-input-padding-x: 0.875rem;
    --bbai-input-radius: var(--bbai-radius);
    --bbai-input-border: 1px solid var(--bbai-gray-300);
    --bbai-input-bg: var(--bbai-bg);

    /* Modal */
    --bbai-modal-padding: var(--bbai-space-8);
    --bbai-modal-radius: var(--bbai-radius-2xl);
    --bbai-modal-max-width: 560px;

    /* Badges */
    --bbai-badge-padding-y: 0.25rem;
    --bbai-badge-padding-x: 0.625rem;
    --bbai-badge-radius: var(--bbai-radius-full);
    --bbai-badge-font-size: var(--bbai-text-xs);
    --bbai-badge-font-weight: var(--bbai-font-medium);

    /* Dashboard & shared admin width */
    --bbai-dashboard-max-width: 1400px;

    /* ========================================
       URGENCY STATES - Conversion Focused
       ======================================== */
    
    --bbai-urgent: #f59e0b;
    --bbai-urgent-light: #fef3c7;
    --bbai-urgent-bg: #fffbeb;
    --bbai-urgent-dark: #d97706;
    --bbai-urgent-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 50%, #b45309 100%);
    
    --bbai-critical: #ef4444;
    --bbai-critical-light: #fee2e2;
    --bbai-critical-bg: #fef2f2;
    --bbai-critical-dark: #dc2626;
    --bbai-critical-gradient: linear-gradient(135deg, #ef4444 0%, #dc2626 50%, #b91c1c 100%);

    /* ========================================
       USAGE COMPARISON BARS
       ======================================== */
    
    --bbai-comparison-free-bg: rgba(255, 255, 255, 0.15);
    --bbai-comparison-free-fill: rgba(255, 255, 255, 0.3);
    --bbai-comparison-pro-bg: rgba(255, 255, 255, 0.15);
    --bbai-comparison-pro-fill: linear-gradient(90deg, #10b981 0%, #059669 100%);
    --bbai-comparison-pro-glow: rgba(16, 185, 129, 0.4);

    /* ========================================
       PLACEHOLDER STATES
       ======================================== */

    --bbai-placeholder-color: var(--bbai-text-muted);
    --bbai-placeholder-opacity: 0.5;
    --bbai-placeholder-size: var(--bbai-text-3xl);
    --bbai-placeholder-weight: var(--bbai-font-bold);

    /* ========================================
       UPGRADE CARD - High Conversion
       ======================================== */

    /* Gradient */
    --bbai-upgrade-gradient: linear-gradient(135deg, #4f46e5 0%, #6366f1 40%, #7c3aed 100%);
    --bbai-upgrade-gradient-hover: linear-gradient(135deg, #5b54f0 0%, #818cf8 40%, #8b5cf6 100%);

    /* Text on gradient */
    --bbai-upgrade-text: #ffffff;
    --bbai-upgrade-text-muted: rgba(255, 255, 255, 0.85);
    --bbai-upgrade-text-subtle: rgba(255, 255, 255, 0.7);

    /* CTA Button */
    --bbai-upgrade-cta-bg: #ffffff;
    --bbai-upgrade-cta-text: #0f172a;
    --bbai-upgrade-cta-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    --bbai-upgrade-cta-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.25);

    /* Badge */
    --bbai-upgrade-badge-bg: rgba(255, 255, 255, 0.2);
    --bbai-upgrade-badge-border: rgba(255, 255, 255, 0.3);

    /* Spacing */
    --bbai-upgrade-padding-mobile: 20px;
    --bbai-upgrade-padding-tablet: 24px;
    --bbai-upgrade-padding-desktop: 32px;

    /* Typography - Fluid */
    --bbai-upgrade-headline-size: clamp(22px, 4vw, 28px);
    --bbai-upgrade-subheadline-size: clamp(14px, 2vw, 16px);
    --bbai-upgrade-feature-size: 15px;
    --bbai-upgrade-cta-size: 16px;
    --bbai-upgrade-microcopy-size: 13px;
}

/* ========================================
   DARK MODE
   ======================================== */

[data-theme="dark"],
.bbai-dark-mode {
    --bbai-text: #f1f5f9;
    --bbai-text-primary: #f1f5f9;
    --bbai-text-secondary: #cbd5e1;
    --bbai-text-muted: #94a3b8;

    --bbai-bg: #0f172a;
    --bbai-bg-primary: #0f172a;
    --bbai-bg-secondary: #1e293b;
    --bbai-bg-tertiary: #334155;
    --bbai-bg-page: #020617;
    --bbai-bg-card: #1e293b;
    --bbai-bg-elevated: #1e293b;

    --bbai-border: #334155;
    --bbai-border-primary: #334155;
    --bbai-border-secondary: #475569;
}

/* ========================================
   ACCESSIBILITY - Reduced Motion
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    :root {
        --bbai-transition-fast: 0ms;
        --bbai-transition-base: 0ms;
        --bbai-transition-slow: 0ms;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   HIGH CONTRAST MODE
   ======================================== */

@media (prefers-contrast: high) {
    :root {
        --bbai-border: var(--bbai-gray-700);
        --bbai-border-primary: var(--bbai-gray-700);
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.bbai-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Consistent Focus Ring utility */
.bbai-focus-ring:focus-visible {
    outline: var(--bbai-focus-ring);
    outline-offset: var(--bbai-focus-ring-offset);
}

/* ========================================
   UNIFIED INTERACTIVE STATES
   Apply to all interactive elements for consistency
   ======================================== */

/* Standard hover lift effect */
.bbai-hover-lift {
    transition: transform var(--bbai-transition-fast) var(--bbai-ease-out),
                box-shadow var(--bbai-transition-fast) var(--bbai-ease-out);
}

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

/* Subtle hover for cards/rows */
.bbai-hover-subtle {
    transition: background-color var(--bbai-transition-fast) var(--bbai-ease-out),
                border-color var(--bbai-transition-fast) var(--bbai-ease-out);
}

.bbai-hover-subtle:hover {
    background-color: var(--bbai-bg-secondary);
}