/* Gauss AI - Brand Tokens v2.0
   Source of truth: docs/branding/brand-tokens.md
   Updated: 2026-02-08 — Rebuild from scratch */

:root {
    /* === Colors === */
    --gauss-blue-700: #1050A0;
    --gauss-blue-600: #1558A0;
    --gauss-cyan-500: #3FA4E5;
    --gauss-ink-900: #0B1220;
    --gauss-ink-700: #243447;
    --gauss-sky-100: #EAF4FF;
    --gauss-line-200: #D7E6F7;
    --gauss-white: #FFFFFF;
    --gauss-black: #0A0A0A;
    --gauss-success: #18A957;

    /* === Gradients === */
    --gauss-gradient-brand: linear-gradient(135deg, #1050A0 0%, #3FA4E5 100%);
    --gauss-gradient-dark: linear-gradient(140deg, #05080F 0%, #0E1B33 100%);
    --gauss-gradient-accent: linear-gradient(135deg, #3FA4E5, #25D366);

    /* === Typography === */
    --font-brand: 'Sora', 'Segoe UI', sans-serif;
    --font-body: 'Inter', 'Segoe UI', sans-serif;

    /* Type scale (fluid) */
    --text-display: clamp(2.75rem, 5vw, 3.5rem);
    --text-h1: clamp(2.25rem, 4vw, 2.75rem);
    --text-h2: clamp(1.75rem, 3.5vw, 2.25rem);
    --text-h3: clamp(1.25rem, 2vw, 1.5rem);
    --text-body-lg: 1.125rem;
    --text-body: 1rem;
    --text-sm: 0.875rem;
    --text-xs: 0.75rem;

    /* === Spacing (8px base) === */
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
    --space-5: 2.5rem;
    --space-6: 3rem;
    --space-8: 4rem;
    --space-10: 5rem;
    --space-12: 6rem;
    --space-16: 8rem;

    /* === Shape === */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-pill: 999px;

    /* === Shadows === */
    --shadow-sm: 0 1px 3px rgba(11,18,32,0.06);
    --shadow-md: 0 4px 16px rgba(11,18,32,0.08);
    --shadow-lg: 0 12px 40px rgba(11,18,32,0.1);
    --shadow-xl: 0 24px 64px rgba(11,18,32,0.14);
    --shadow-glow-blue: 0 0 60px -20px rgba(63,164,229,0.2);
    --shadow-glow-green: 0 4px 20px rgba(37,211,102,0.25);

    /* === Transitions === */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration-fast: 150ms;
    --duration-base: 300ms;
    --duration-slow: 500ms;

    /* === Semantic Aliases === */
    --color-primary: var(--gauss-blue-600);
    --color-primary-hover: var(--gauss-blue-700);
    --color-accent: var(--gauss-cyan-500);
    --color-success: var(--gauss-success);
    --color-text: var(--gauss-ink-900);
    --color-text-secondary: var(--gauss-ink-700);
    --color-bg-light: var(--gauss-white);
    --color-bg-dark: var(--gauss-black);
    --color-bg-subtle: var(--gauss-sky-100);
    --color-border: var(--gauss-line-200);

    /* WhatsApp (functional, not brand) */
    --whatsapp-green: #25D366;
    --whatsapp-green-hover: #1DA851;
    --whatsapp-bg: #ECE5DD;
    --chat-sent: #DCF8C6;
    --chat-received: #FFFFFF;

    /* === Layout === */
    --container-max: 1200px;
    --container-narrow: 760px;
    --header-height: 72px;
    --header-height-shrink: 60px;
}