@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================
   DESIGN SYSTEM - Executive Aurora
   ============================================ */

:root {
    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Colors - Light Mode */
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-tertiary: #e2e8f0;
    --bg-card: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.72);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #f8fafc;
    
    --accent-primary: #0284c7;
    --accent-primary-light: #38bdf8;
    --accent-secondary: #d97706;
    --accent-secondary-light: #fbbf24;
    --accent-success: #059669;
    --accent-warning: #d97706;
    --accent-danger: #dc2626;
    --accent-info: #6366f1;
    
    --border-color: rgba(148, 163, 184, 0.25);
    --border-hover: rgba(148, 163, 184, 0.5);
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    --shadow-glow: 0 0 20px rgba(2, 132, 199, 0.15);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
    --header-height: 64px;
    
}

[data-theme="dark"] {
    --bg-primary: #070b14;
    --bg-secondary: #0f172a;
    --bg-tertiary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.6);
    --bg-glass: rgba(30, 41, 59, 0.5);
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --text-inverse: #0f172a;
    
    --accent-primary: #38bdf8;
    --accent-primary-light: #7dd3fc;
    --accent-secondary: #f59e0b;
    --accent-secondary-light: #fbbf24;
    --accent-success: #34d399;
    --accent-warning: #fbbf24;
    --accent-danger: #f87171;
    --accent-info: #818cf8;
    
    --border-color: rgba(100, 116, 139, 0.2);
    --border-hover: rgba(100, 116, 139, 0.4);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.2);
}

/* Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color var(--transition-slow), color var(--transition-slow);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Selection */
::selection {
    background: var(--accent-primary);
    color: var(--text-inverse);
}

/* Links */
a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-primary-light);
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Utility classes */
.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;
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
}

.glass-strong {
    background: var(--bg-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-color);
}