/* Modern Design System - Histone Solutions */

:root {
    /* Brand Colors - Modern Blue & Teal Palette */
    --primary: #3b82f6;
    --primary-light: #60a5fa;
    --primary-dark: #2563eb;
    --secondary: #14b8a6;
    --secondary-light: #2dd4bf;
    --accent: #8b5cf6;
    --dark: #111827;
    --darker: #030712;
    --light: #f9fafb;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Spacing System - Enhanced */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius - Modern */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Transitions - Smooth */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Shadows - Layered Depth */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-primary: 0 10px 40px -10px rgba(59, 130, 246, 0.3);
    --shadow-secondary: 0 10px 40px -10px rgba(20, 184, 166, 0.3);

    /* Typography - Modern Font Stack */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-display: 'Inter', system-ui, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;

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

/* Dark Theme (Default) - Modern Blue Approach */
body[data-theme="dark"] {
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1729;
    --bg-tertiary: #1a2332;
    --bg-card: #111827;
    --bg-card-hover: #1e293b;
    --border-color: #1e3a8a;
    --border-subtle: #1e3a8a;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --nav-bg: rgba(17, 24, 39, 0.95);
    --nav-bg-solid: rgba(17, 24, 39, 0.98);
    --backdrop-blur: blur(20px);
    --gradient-from: rgba(59, 130, 246, 0.15);
    --gradient-to: rgba(20, 184, 166, 0.1);
}

/* Light Theme - Clean & Professional */
body[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --border-color: #e2e8f0;
    --border-subtle: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --nav-bg-solid: rgba(255, 255, 255, 0.98);
    --backdrop-blur: blur(20px);
    --gradient-from: rgba(59, 130, 246, 0.08);
    --gradient-to: rgba(20, 184, 166, 0.04);
}
