/* VerboAI design tokens — single source of truth */

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

:root {
    color-scheme: light;

    /* Brand */
    --color-primary: #273c75;
    --color-primary-hover: #3a5cbd;
    --color-accent: #00c6ff;
    --color-accent-muted: rgba(0, 198, 255, 0.12);

    /* Legacy aliases (backward compat) */
    --main-brand-blue: var(--color-primary);
    --secondary-blue: var(--color-primary-hover);
    --accent-teal: var(--color-accent);
    --success-green: #1abc9c;
    --white: #ffffff;
    --light-gray: #f5f7fa;
    --dark-text: #2f3640;
    --medium-gray: #dfe4ea;

    /* Semantic */
    --color-success: #1abc9c;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;

    /* Surfaces & text */
    --color-bg: #f5f7fa;
    --color-surface: #ffffff;
    --color-text: #2f3640;
    --color-text-muted: #6b7280;
    --color-border: rgba(0, 0, 0, 0.06);

    /* Typography */
    --font-heading: 'Plus Jakarta Sans', 'Inter', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --app-font: var(--font-body);

    /* Fluid typography */
    --font-size-base: clamp(14px, 2.5vw, 16px);
    --font-size-sm: clamp(12px, 2vw, 14px);
    --font-size-lg: clamp(16px, 3vw, 18px);
    --font-size-xl: clamp(18px, 4vw, 24px);
    --font-size-2xl: clamp(20px, 5vw, 32px);
    --font-size-3xl: clamp(24px, 6vw, 48px);

    /* Spacing (4/8 rhythm) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;

    --spacing-xs: clamp(0.25rem, 1vw, 0.5rem);
    --spacing-sm: clamp(0.5rem, 2vw, 1rem);
    --spacing-md: clamp(1rem, 3vw, 1.5rem);
    --spacing-lg: clamp(1.5rem, 4vw, 2rem);
    --spacing-xl: clamp(2rem, 5vw, 3rem);

    /* Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;

    /* Elevation */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.1);

    /* Motion */
    --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
    --duration-fast: 160ms;
    --duration-normal: 200ms;
    --transition: var(--duration-normal) var(--ease-out);

    /* Layout */
    --sidebar-width: 250px;
    --sidebar-collapsed: 70px;
    --content-max-width: 1200px;
    --header-height: 64px;
    --mobile-nav-offset: 56px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}