:root {
    /* Base Colors - Slate & Emerald Pro VIP Theme */
    --bg-base: #0f1115;
    --bg-surface: rgba(23, 27, 34, 0.65);
    --bg-surface-elevated: rgba(30, 36, 45, 0.85);
    
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-accent: #10b981; /* Emerald */
    
    /* Semantic Colors */
    --emerald-500: #10b981;
    --emerald-400: #34d399;
    --emerald-100: rgba(16, 185, 129, 0.1);
    
    --rose-500: #f43f5e;
    --rose-400: #fb7185;
    --rose-100: rgba(244, 63, 94, 0.1);
    
    --sky-500: #0ea5e9;
    --sky-400: #38bdf8;
    --sky-100: rgba(14, 165, 233, 0.1);
    
    --indigo-500: #6366f1; /* Used sparingly as an accent */
    
    /* Layout */
    --sidebar-width: 280px;
    --border-radius-lg: 16px;
    --border-radius-md: 12px;
    --border-radius-sm: 8px;
    
    /* Effects */
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.36);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body.dark-theme {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, sans-serif;
    line-height: 1.5; /* UX audit fix: Add standard line height */
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background Effects */
.background-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at 50% 0%, #171b22 0%, #0f1115 100%);
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
}

.orb-1 {
    top: -10%;
    right: -5%;
    width: 40vw;
    height: 40vw;
    background: var(--sky-500);
}

.orb-2 {
    bottom: -20%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: var(--emerald-500);
}

/* Typography Utilities */
.number {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
}

.text-accent { color: var(--text-accent); }
.text-emerald { color: var(--emerald-500); }
.text-rose { color: var(--rose-500); }
.text-sky { color: var(--sky-500); }

.bg-emerald\/10 { background-color: var(--emerald-100); }
.bg-rose\/10 { background-color: var(--rose-100); }
.bg-sky\/10 { background-color: var(--sky-100); }