:root {
    /* Primary brand colors — Amber/Construction Orange */
    --primary: #d97706;
    --primary-dark: #b45309;
    --primary-light: #f59e0b;
    --primary-50: #fffbeb;
    --primary-100: #fef3c7;

    /* Accent — Teal for info/links */
    --accent: #0d9488;
    --accent-light: #ccfbf1;

    /* Secondary */
    --secondary: #64748b;
    --secondary-dark: #475569;

    /* Semantic colors */
    --success: #16a34a;
    --success-light: #dcfce7;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --info: #0d9488;
    --info-light: #ccfbf1;

    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Text */
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --text-inverse: #ffffff;

    /* Background */
    --bg-body: #f0f2f5;
    --bg-white: #ffffff;
    --bg-sidebar: #0c1222;
    --bg-sidebar-hover: rgba(255, 255, 255, 0.06);
    --bg-sidebar-active: rgba(217, 119, 6, 0.15);

    /* Border */
    --border-color: #d1d5db;
    --border-strong: #9ca3af;
    --border-radius: 6px;
    --border-radius-sm: 4px;
    --border-radius-lg: 8px;

    /* Shadows — subtle colored tints */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    /* Spacing */
    --sidebar-width: 260px;
    --header-height: 56px;

    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
    --font-data: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;

    /* Transitions */
    --transition: 150ms ease;
    --transition-slow: 250ms ease;
}