/* 
 * Design System Variables
 * Compatível com Android Material Design
 * Use estas mesmas variáveis no seu app Android
 */

:root {
    /* === PRIMARY COLORS === */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    /* Primary shortcuts */
    --primary: var(--primary-600);
    --primary-dark: var(--primary-800);
    --primary-light: var(--primary-400);

    /* === SECONDARY COLORS === */
    --secondary-50: #ecfdf5;
    --secondary-100: #d1fae5;
    --secondary-200: #a7f3d0;
    --secondary-300: #6ee7b7;
    --secondary-400: #34d399;
    --secondary-500: #10b981;
    --secondary-600: #059669;
    --secondary-700: #047857;
    --secondary-800: #065f46;
    --secondary-900: #064e3b;

    /* Secondary shortcuts */
    --secondary: var(--secondary-600);
    --secondary-dark: var(--secondary-800);
    --secondary-light: var(--secondary-400);

    /* === NEUTRAL COLORS === */
    --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;

    /* === SEMANTIC COLORS === */
    --error: #ef4444;
    --error-light: #fca5a5;
    --error-bg: #fee2e2;

    --warning: #f59e0b;
    --warning-light: #fcd34d;
    --warning-bg: #fef3c7;

    /* Dark variants (used for text + hover states) */
    --warning-dark: #b45309;

    --success: #10b981;
    --success-light: #6ee7b7;
    --success-bg: #d1fae5;

    /* Dark variants (used for text + hover states) */
    --success-dark: var(--secondary-700);

    --info: #3b82f6;
    --info-light: #93c5fd;
    --info-dark: #1e40af;
    --info-bg: #dbeafe;

    /* === BACKGROUND COLORS === */
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    --bg-gradient: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);

    /* === TEXT COLORS === */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-500);
    --text-disabled: var(--gray-400);
    --text-inverse: #ffffff;

    /* === SPACING (8dp Grid - Android padrão) === */
    --space-0: 0;
    --space-1: 4px;
    /* 0.5 * 8dp */
    --space-2: 8px;
    /* 1 * 8dp */
    --space-3: 12px;
    /* 1.5 * 8dp */
    --space-4: 16px;
    /* 2 * 8dp */
    --space-5: 20px;
    /* 2.5 * 8dp */
    --space-6: 24px;
    /* 3 * 8dp */
    --space-8: 32px;
    /* 4 * 8dp */
    --space-10: 40px;
    /* 5 * 8dp */
    --space-12: 48px;
    /* 6 * 8dp */
    --space-16: 64px;
    /* 8 * 8dp */
    --space-20: 80px;
    /* 10 * 8dp */
    --space-24: 96px;
    /* 12 * 8dp */

    /* === BORDER RADIUS === */
    --radius-none: 0;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-3xl: 24px;
    --radius-full: 9999px;

    /* === SHADOWS (Material Design Elevations) === */
    /* Elevation 0 */
    --shadow-none: none;

    /* Elevation 1 - 1dp */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);

    /* Elevation 2 - 2dp */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);

    /* Elevation 4 - 4dp */
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);

    /* Elevation 8 - 8dp */
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Elevation 16 - 16dp */
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Elevation 24 - 24dp */
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* === TYPOGRAPHY === */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    /* Font Sizes */
    --text-xs: 12px;
    --text-sm: 14px;
    --text-base: 16px;
    --text-lg: 18px;
    --text-xl: 20px;
    --text-2xl: 24px;
    --text-3xl: 30px;
    --text-4xl: 36px;
    --text-5xl: 48px;

    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* === BORDERS === */
    --border-width: 1px;
    --border-width-2: 2px;
    --border-width-4: 4px;

    --border-color: var(--gray-200);
    --border-color-dark: var(--gray-300);

    /* === Z-INDEX === */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;

    /* === TRANSITIONS === */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* === BREAKPOINTS (referência, use em media queries) === */
    /* --breakpoint-sm: 640px; */
    /* --breakpoint-md: 768px; */
    /* --breakpoint-lg: 1024px; */
    /* --breakpoint-xl: 1280px; */
    /* --breakpoint-2xl: 1536px; */
}

/* Dark Mode (preparado para futuro) */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: var(--gray-900);
        --bg-secondary: var(--gray-800);
        --bg-tertiary: var(--gray-700);
        --text-primary: var(--gray-50);
        --text-secondary: var(--gray-300);
        --text-tertiary: var(--gray-400);
        --border-color: var(--gray-700);
    }
}