/**
 * ============================================
 * ENHANCED DESIGN TOKENS - Admin UI Modernization
 * Crypto Intelligence Hub
 * ============================================
 *
 * Comprehensive design system with:
 * - Color palette (dark/light themes)
 * - Gradients (linear, radial, glass effects)
 * - Typography scale (fonts, sizes, weights, spacing)
 * - Spacing system (consistent rhythm)
 * - Border radius tokens
 * - Multi-layered shadow system
 * - Blur effect variables
 * - Transition and easing functions
 * - Z-index elevation levels
 * - Layout constants
 */

:root {
    /* ===== COLOR PALETTE - DARK THEME (DEFAULT) ===== */

    /* Primary Brand Colors */
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-primary-darker: #4338ca;

    /* Accent Colors */
    --color-accent: #ec4899;
    --color-accent-light: #f472b6;
    --color-accent-dark: #db2777;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-success-light: #34d399;
    --color-success-dark: #059669;

    --color-warning: #f59e0b;
    --color-warning-light: #fbbf24;
    --color-warning-dark: #d97706;

    --color-error: #ef4444;
    --color-error-light: #f87171;
    --color-error-dark: #dc2626;

    --color-info: #3b82f6;
    --color-info-light: #60a5fa;
    --color-info-dark: #2563eb;

    /* Extended Palette */
    --color-purple: #8b5cf6;
    --color-purple-light: #a78bfa;
    --color-purple-dark: #7c3aed;

    --color-cyan: #06b6d4;
    --color-cyan-light: #22d3ee;
    --color-cyan-dark: #0891b2;

    --color-orange: #f97316;
    --color-orange-light: #fb923c;
    --color-orange-dark: #ea580c;

    /* Background Colors - Dark Theme */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;
    --bg-overlay: rgba(0, 0, 0, 0.75);

    /* Glassmorphism Backgrounds */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-light: rgba(255, 255, 255, 0.08);
    --glass-bg-strong: rgba(255, 255, 255, 0.12);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-border-strong: rgba(255, 255, 255, 0.2);

    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;
    --text-disabled: #475569;
    --text-inverse: #0f172a;

    /* Border Colors */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-light: rgba(255, 255, 255, 0.05);
    --border-color-strong: rgba(255, 255, 255, 0.2);
    --border-focus: var(--color-primary);

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

    /* Primary Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warning: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    --gradient-error: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);

    /* Glass Gradients */
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    --gradient-glass-strong: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.08) 100%);

    /* Overlay Gradients */
    --gradient-overlay: linear-gradient(180deg, rgba(15,23,42,0) 0%, rgba(15,23,42,0.8) 100%);
    --gradient-overlay-radial: radial-gradient(circle at center, rgba(15,23,42,0) 0%, rgba(15,23,42,0.9) 100%);

    /* Radial Gradients for Backgrounds */
    --gradient-radial-blue: radial-gradient(circle at 20% 30%, rgba(99,102,241,0.15) 0%, transparent 50%);
    --gradient-radial-purple: radial-gradient(circle at 80% 70%, rgba(139,92,246,0.15) 0%, transparent 50%);
    --gradient-radial-pink: radial-gradient(circle at 50% 50%, rgba(236,72,153,0.1) 0%, transparent 40%);
    --gradient-radial-green: radial-gradient(circle at 60% 40%, rgba(16,185,129,0.1) 0%, transparent 40%);

    /* Multi-color Gradients */
    --gradient-rainbow: linear-gradient(135deg, #667eea 0%, #764ba2 33%, #f093fb 66%, #4facfe 100%);
    --gradient-sunset: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-ocean: linear-gradient(135deg, #2e3192 0%, #1bffff 100%);

    /* ===== TYPOGRAPHY ===== */

    /* Font Families */
    --font-family-primary: 'Inter', 'Manrope', 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-secondary: 'Manrope', 'Inter', sans-serif;
    --font-family-display: 'DM Sans', 'Inter', sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Consolas', monospace;

    /* Font Sizes */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-md: 1.125rem;     /* 18px */
    --font-size-lg: 1.25rem;      /* 20px */
    --font-size-xl: 1.5rem;       /* 24px */
    --font-size-2xl: 1.875rem;    /* 30px */
    --font-size-3xl: 2.25rem;     /* 36px */
    --font-size-4xl: 3rem;        /* 48px */
    --font-size-5xl: 3.75rem;     /* 60px */

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 1.75;
    --line-height-loose-2: 2;

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

    /* ===== SPACING SCALE ===== */
    --space-0: 0;
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-7: 1.75rem;   /* 28px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */

    /* Semantic Spacing */
    --spacing-xs: var(--space-1);
    --spacing-sm: var(--space-2);
    --spacing-md: var(--space-4);
    --spacing-lg: var(--space-6);
    --spacing-xl: var(--space-8);
    --spacing-2xl: var(--space-12);
    --spacing-3xl: var(--space-16);

    /* ===== BORDER RADIUS ===== */
    --radius-none: 0;
    --radius-xs: 0.25rem;    /* 4px */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-base: 0.5rem;   /* 8px */
    --radius-md: 0.75rem;    /* 12px */
    --radius-lg: 1rem;       /* 16px */
    --radius-xl: 1.5rem;     /* 24px */
    --radius-2xl: 2rem;      /* 32px */
    --radius-3xl: 3rem;      /* 48px */
    --radius-full: 9999px;

    /* ===== MULTI-LAYERED SHADOW SYSTEM ===== */

    /* Base Shadows - Dark Theme */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);

    /* Colored Glow Shadows */
    --shadow-glow: 0 0 20px rgba(99,102,241,0.3);
    --shadow-glow-accent: 0 0 20px rgba(236,72,153,0.3);
    --shadow-glow-success: 0 0 20px rgba(16,185,129,0.3);
    --shadow-glow-warning: 0 0 20px rgba(245,158,11,0.3);
    --shadow-glow-error: 0 0 20px rgba(239,68,68,0.3);

    /* Multi-layered Colored Shadows */
    --shadow-blue: 0 10px 30px -5px rgba(59, 130, 246, 0.4), 0 0 15px rgba(59, 130, 246, 0.2);
    --shadow-purple: 0 10px 30px -5px rgba(139, 92, 246, 0.4), 0 0 15px rgba(139, 92, 246, 0.2);
    --shadow-pink: 0 10px 30px -5px rgba(236, 72, 153, 0.4), 0 0 15px rgba(236, 72, 153, 0.2);
    --shadow-green: 0 10px 30px -5px rgba(16, 185, 129, 0.4), 0 0 15px rgba(16, 185, 129, 0.2);
    --shadow-cyan: 0 10px 30px -5px rgba(6, 182, 212, 0.4), 0 0 15px rgba(6, 182, 212, 0.2);

    /* Inner Shadows */
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.3);
    --shadow-inner-lg: inset 0 4px 8px 0 rgba(0, 0, 0, 0.4);

    /* ===== BLUR EFFECT VARIABLES ===== */
    --blur-none: 0;
    --blur-xs: 2px;
    --blur-sm: 4px;
    --blur-base: 8px;
    --blur-md: 12px;
    --blur-lg: 16px;
    --blur-xl: 24px;
    --blur-2xl: 40px;
    --blur-3xl: 64px;

    /* ===== TRANSITION AND EASING FUNCTIONS ===== */

    /* Duration */
    --transition-instant: 0ms;
    --transition-fast: 150ms;
    --transition-base: 250ms;
    --transition-slow: 350ms;
    --transition-slower: 500ms;
    --transition-slowest: 700ms;

    /* Easing Functions */
    --ease-linear: linear;
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.25, 0.1, 0.25, 1);

    /* Combined Transitions */
    --transition-all-fast: all var(--transition-fast) var(--ease-out);
    --transition-all-base: all var(--transition-base) var(--ease-in-out);
    --transition-all-slow: all var(--transition-slow) var(--ease-in-out);
    --transition-transform: transform var(--transition-base) var(--ease-out);
    --transition-opacity: opacity var(--transition-base) var(--ease-out);
    --transition-colors: color var(--transition-base) var(--ease-out), background-color var(--transition-base) var(--ease-out), border-color var(--transition-base) var(--ease-out);

    /* ===== Z-INDEX ELEVATION LEVELS ===== */
    --z-base: 0;
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-notification: 1080;
    --z-max: 9999;

    /* ===== LAYOUT CONSTANTS ===== */
    --header-height: 72px;
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --mobile-nav-height: 64px;
    --container-max-width: 1920px;
    --content-max-width: 1440px;

    /* ===== BREAKPOINTS (for JS usage) ===== */
    --breakpoint-xs: 320px;
    --breakpoint-sm: 480px;
    --breakpoint-md: 640px;
    --breakpoint-lg: 768px;
    --breakpoint-xl: 1024px;
    --breakpoint-2xl: 1280px;
    --breakpoint-3xl: 1440px;
    --breakpoint-4xl: 1920px;
}

/* ===== LIGHT THEME OVERRIDES ===== */
[data-theme="light"] {
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(255, 255, 255, 0.9);

    /* Glassmorphism Backgrounds */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-bg-light: rgba(255, 255, 255, 0.5);
    --glass-bg-strong: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.1);
    --glass-border-strong: rgba(0, 0, 0, 0.2);

    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --text-muted: #d1d5db;
    --text-disabled: #e5e7eb;
    --text-inverse: #ffffff;

    /* Border Colors */
    --border-color: rgba(0, 0, 0, 0.1);
    --border-color-light: rgba(0, 0, 0, 0.05);
    --border-color-strong: rgba(0, 0, 0, 0.2);

    /* Glass Gradients */
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0.6) 100%);
    --gradient-glass-strong: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);

    /* Overlay Gradients */
    --gradient-overlay: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.8) 100%);

    /* Shadows - Lighter for Light Theme */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.12), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Inner Shadows */
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-inner-lg: inset 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}

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

/* Glassmorphism Effects */
.glass-effect {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-lg));
    -webkit-backdrop-filter: blur(var(--blur-lg));
    border: 1px solid var(--glass-border);
}

.glass-effect-light {
    background: var(--glass-bg-light);
    backdrop-filter: blur(var(--blur-md));
    -webkit-backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--glass-border);
}

.glass-effect-strong {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(var(--blur-xl));
    -webkit-backdrop-filter: blur(var(--blur-xl));
    border: 1px solid var(--glass-border-strong);
}

/* Gradient Backgrounds */
.bg-gradient-primary {
    background: var(--gradient-primary);
}

.bg-gradient-accent {
    background: var(--gradient-accent);
}

.bg-gradient-success {
    background: var(--gradient-success);
}

/* Text Gradients */
.text-gradient-primary {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-accent {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Shadow Utilities */
.shadow-glow-blue {
    box-shadow: var(--shadow-blue);
}

.shadow-glow-purple {
    box-shadow: var(--shadow-purple);
}

.shadow-glow-pink {
    box-shadow: var(--shadow-pink);
}

.shadow-glow-green {
    box-shadow: var(--shadow-green);
}

/* Animation Utilities */
.transition-fast {
    transition: var(--transition-all-fast);
}

.transition-base {
    transition: var(--transition-all-base);
}

.transition-slow {
    transition: var(--transition-all-slow);
}

/* Accessibility: Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}