/* SORCC Design System — RF Survey Dashboard (Hydra-aligned) */
:root {
    /* ── Brand Greens (from Hydra) ── */
    --sorcc-green: #385723;
    --sorcc-green-dark: #2a4118;
    --sorcc-green-light: #5a9c4f;
    --sorcc-muted: #A6BC92;
    --sorcc-warm: #D8E2D0;
    --sorcc-light: #EFF5EB;

    /* ── Dark Base (deeper blacks from Hydra) ── */
    --bg-dark: #0c0c0c;
    --bg-panel: #1c1c1c;
    --bg-panel-gradient: linear-gradient(145deg, #1c1c1c, #1a1f18);
    --bg-input: #111;
    --bg-sidebar: #141414;
    --bg-hover: rgba(56, 87, 35, 0.1);
    --card-border: #262626;

    /* ── Text ── */
    --text-primary: #e8e8e8;
    --text-secondary: #888;
    --text-bright: #fff;
    --text-dim: #555;

    /* ── Legacy aliases (for existing CSS that uses these) ── */
    --border: #262626;
    --border-light: #333;

    /* ── Signal Colors (RF-specific) ── */
    --signal-cold: #42a5f5;
    --signal-warm: #ff9800;
    --signal-hot: #ef5350;

    /* ── FPV Detection (confidence tiers) ── */
    --fpv-high: #ef4444;
    --fpv-medium: #fb923c;
    --fpv-low: #a78bfa;

    /* ── Status Colors ── */
    --danger: #c53030;
    --danger-bg: #2a1010;
    --info: #3b82f6;
    --info-bg: rgba(30, 58, 95, 0.95);
    --success: #385723;
    --success-bg: rgba(20, 60, 30, 0.95);
    --warning: #b45309;
    --warning-bg: #2a2010;

    /* ── Accent Glow ── */
    --glow-green: 0 0 12px rgba(56, 87, 35, 0.3);
    --glow-danger: 0 0 12px rgba(197, 48, 48, 0.3);

    /* ── Spacing ── */
    --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
    --sp-5: 20px; --sp-6: 24px; --sp-7: 28px; --sp-8: 32px;
    --gap-xs: 4px; --gap-sm: 8px; --gap-md: 12px;
    --gap-lg: 16px; --gap-xl: 24px;

    /* ── Type Scale ── */
    --font-xs: 0.75rem; --font-sm: 0.85rem; --font-base: 1rem;
    --font-md: 1rem; --font-lg: 1.2rem; --font-xl: 1.5rem;
    --font-2xl: 2rem; --font-3xl: 3rem;

    /* ── Letter Spacing ── */
    --ls-condensed: 0.08em;
    --ls-wide: 0.12em;
    --ls-mono: 0.02em;

    /* ── Border Radii ── */
    --radius-sm: 4px; --radius-md: 6px; --radius-lg: 8px;
    --radius-xl: 12px; --radius-pill: 999px;

    /* ── Transitions ── */
    --transition-fast: 100ms ease-out;
    --transition-normal: 200ms ease-out;
    --transition-slow: 300ms ease-out;

    /* ── Layout ── */
    --topbar-height: 48px;
    --footer-height: 28px;

    /* ── Fonts (system stack with Hydra-style fallbacks) ── */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'SF Mono', 'Cascadia Code', 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* ── Overlay ── */
    --overlay-bg: rgba(0, 0, 0, 0.75);
}