/**
 * Maestro Design System - CSS Variables
 * ========================================
 * Todas as variáveis CSS do design system.
 * Importar este arquivo primeiro em qualquer página.
 */

:root {
    /* ==================== COLORS ==================== */
    
    /* Primary */
    --color-primary: #5d9779;
    --color-primary-hover: #4a7a62;
    --color-primary-active: #3d6550;
    --color-primary-light: #e8f5ee;
    --color-primary-subtle: #f0f9f4;
    --color-primary-rgb: 93, 151, 121;
    
    /* Neutral / Gray Scale */
    --color-gray-50: #f8f9fa;
    --color-gray-100: #f1f3f4;
    --color-gray-200: #e8eaed;
    --color-gray-300: #dadce0;
    --color-gray-400: #bdc1c6;
    --color-gray-500: #9aa0a6;
    --color-gray-600: #80868b;
    --color-gray-700: #5f6368;
    --color-gray-800: #3c4043;
    --color-gray-900: #202124;
    
    /* Semantic Colors */
    --color-success: #34a853;
    --color-success-hover: #2d9249;
    --color-success-light: #e6f4ea;
    --color-success-rgb: 52, 168, 83;
    
    --color-warning: #fbbc04;
    --color-warning-hover: #e5ab00;
    --color-warning-light: #fef7e0;
    --color-warning-dark: #b45309;
    --color-warning-rgb: 251, 188, 4;
    
    --color-danger: #ea4335;
    --color-danger-hover: #d33426;
    --color-danger-light: #fce8e6;
    --color-danger-rgb: 234, 67, 53;
    
    --color-info: #4285f4;
    --color-info-hover: #3b78e7;
    --color-info-light: #e8f0fe;
    --color-info-rgb: 66, 133, 244;
    
    /* Background */
    --bg-body: var(--color-gray-50);
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-hover: var(--color-gray-100);
    --bg-active: var(--color-gray-200);
    --bg-disabled: var(--color-gray-100);
    
    /* Border */
    --border-color: var(--color-gray-300);
    --border-color-light: var(--color-gray-200);
    --border-color-focus: var(--color-primary);
    
    /* Text */
    --text-primary: var(--color-gray-900);
    --text-secondary: var(--color-gray-700);
    --text-tertiary: var(--color-gray-600);
    --text-placeholder: var(--color-gray-500);
    --text-disabled: var(--color-gray-400);
    --text-inverse: #ffffff;
    --text-link: var(--color-primary);
    --text-link-hover: var(--color-primary-hover);
    
    /* ==================== TYPOGRAPHY ==================== */
    
    --font-family-sans: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-display: 'Google Sans', 'Roboto', -apple-system, sans-serif;
    --font-family-mono: 'Roboto Mono', 'SF Mono', 'Consolas', monospace;
    
    /* Font Sizes */
    --font-size-2xs: 0.5625rem;   /* 9px */
    --font-size-xs: 0.6875rem;   /* 11px */
    --font-size-sm: 0.75rem;     /* 12px */
    --font-size-13: 0.8125rem;   /* 13px */
    --font-size-base: 0.875rem;  /* 14px */
    --font-size-md: 1rem;        /* 16px */
    --font-size-lg: 1.125rem;    /* 18px */
    --font-size-xl: 1.25rem;     /* 20px */
    --font-size-2xl: 1.5rem;     /* 24px */
    --font-size-3xl: 1.875rem;   /* 30px */
    --font-size-4xl: 2.25rem;    /* 36px */
    --font-size-5xl: 4.5rem;     /* 72px - KPI display */
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* ==================== SPACING ==================== */
    
    --space-0: 0;
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    
    /* ==================== BORDER RADIUS ==================== */
    
    --radius-none: 0;
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-3xl: 24px;
    --radius-full: 9999px;
    
    /* ==================== SHADOWS ==================== */
    
    --shadow-none: none;
    --shadow-xs: 0 1px 2px rgba(60, 64, 67, 0.1);
    --shadow-sm: 0 1px 3px rgba(60, 64, 67, 0.12), 0 1px 2px rgba(60, 64, 67, 0.08);
    --shadow: 0 2px 6px rgba(60, 64, 67, 0.15);
    --shadow-md: 0 4px 12px rgba(60, 64, 67, 0.15);
    --shadow-lg: 0 8px 24px rgba(60, 64, 67, 0.18);
    --shadow-xl: 0 12px 40px rgba(60, 64, 67, 0.2);
    --shadow-2xl: 0 20px 60px rgba(60, 64, 67, 0.25);
    
    /* Focus Ring */
    --shadow-focus: 0 0 0 3px rgba(var(--color-primary-rgb), 0.3);
    --shadow-focus-danger: 0 0 0 3px rgba(234, 67, 53, 0.3);
    
    /* ==================== TRANSITIONS ==================== */
    
    --transition-fast: 100ms ease;
    --transition: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 400ms ease;
    
    /* Specific transitions */
    --transition-colors: color 200ms ease, background-color 200ms ease, border-color 200ms ease;
    --transition-transform: transform 200ms ease;
    --transition-opacity: opacity 200ms ease;
    --transition-shadow: box-shadow 200ms ease;
    --transition-all: all 200ms ease;
    
    /* ==================== Z-INDEX ==================== */
    
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-sidebar: 400;
    --z-modal-backdrop: 500;
    --z-modal: 600;
    --z-popover: 700;
    --z-tooltip: 800;
    --z-notification: 900;
    --z-max: 9999;
    
    /* ==================== LAYOUT ==================== */
    
    --sidebar-width: 256px;
    --sidebar-collapsed-width: 68px;
    --header-height: 64px;
    --footer-height: 56px;
    
    /* Container widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
    
    /* ==================== COMPONENTS ==================== */
    
    /* Button */
    --btn-height-sm: 32px;
    --btn-height: 40px;
    --btn-height-lg: 48px;
    
    /* Input */
    --input-height-sm: 32px;
    --input-height: 40px;
    --input-height-lg: 48px;
    
    /* Modal */
    --modal-width-sm: 400px;
    --modal-width: 540px;
    --modal-width-lg: 720px;
    --modal-width-xl: 900px;
    --modal-width-full: calc(100vw - 64px);
    
    /* Sidebar */
    --sidebar-panel-min-width: 200px;
    --sidebar-panel-max-width: 600px;
    --sidebar-panel-default-width: 320px;

    /* ==================== OVERLAYS ==================== */
    --overlay-backdrop: rgba(0, 0, 0, 0.5);
    --overlay-light: rgba(0, 0, 0, 0.3);
    --overlay-dark-90: rgba(0, 0, 0, 0.9);
    --overlay-white-80: rgba(255, 255, 255, 0.8);
    --overlay-white-10: rgba(255, 255, 255, 0.1);
    --overlay-white-20: rgba(255, 255, 255, 0.2);
    --overlay-white-08: rgba(255, 255, 255, 0.08);
    --overlay-white-12: rgba(255, 255, 255, 0.12);
    --overlay-white-22: rgba(255, 255, 255, 0.22);
    --overlay-black-04: rgba(0, 0, 0, 0.04);
    --overlay-black-05: rgba(0, 0, 0, 0.05);
    --overlay-black-06: rgba(0, 0, 0, 0.06);
    --overlay-black-08: rgba(0, 0, 0, 0.08);
    --overlay-black-10: rgba(0, 0, 0, 0.1);
    --overlay-black-12: rgba(0, 0, 0, 0.12);
    --overlay-black-15: rgba(0, 0, 0, 0.15);

    /* Shadow - dropdown / tooltip */
    --shadow-dropdown-strong: 0 4px 20px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.05);
    --shadow-input: 0 2px 4px rgba(0, 0, 0, 0.1);

    /* Focus ring (Bootstrap override) */
    --color-focus-ring: var(--color-primary);

    /* Link/button (Bootstrap scaffold / páginas Account) */
    --color-link: var(--color-primary);
    --color-btn-primary: var(--color-primary);
    --color-btn-primary-border: var(--color-primary-hover);
    --color-border-default: #e5e5e5;

    /* Sidebar variáveis (Bootstrap-like quando usado em painéis) */
    --color-sidebar-primary: var(--color-primary);
    --color-sidebar-primary-rgb: var(--color-primary-rgb);
    --color-sidebar-text: #111827;
    --color-sidebar-text-alt: #6b7280;
    --color-sidebar-border: #e5e7eb;
    --color-sidebar-bg-hover: #f3f4f6;
    --color-success-text: #15803d;
    --color-danger-text: #b91c1c;
    --color-info-text: var(--color-primary-hover);
    --color-warning-text-alt: #92400e;

    /* Favorite / Recent quick-access icon colors */
    --color-favorite-bg-start: #fff8e1;
    --color-favorite-bg-end: #ffe082;
    --color-favorite: #f57c00;
    --color-favorite-hover: #e65100;
    --color-favorite-rgb: 245, 124, 0;
    --color-recent-bg-start: var(--primary-subtle);
    --color-recent-bg-end: rgba(var(--color-primary-rgb), 0.28);
    --color-recent: var(--color-primary);
    --color-recent-hover: var(--color-primary-hover);
    --color-recent-rgb: var(--color-primary-rgb);

    /* Canvas / editor paper */
    --canvas-bg: #e8e8e8;
    --canvas-paper-bg: #f0f0f0;
    --canvas-grid: #aaa;
    --canvas-grid-alt: #888;
    --canvas-text-muted: #666;
    --canvas-overlay-light: rgba(250, 250, 252, 0.6);
    --canvas-overlay-light-2: rgba(248, 248, 250, 0.4);
    --canvas-border-subtle: rgba(0, 0, 0, 0.04);
    --canvas-border-focus: rgba(var(--color-primary-rgb), 0.2);
    --canvas-shadow-focus: 0 0 0 3px rgba(var(--color-primary-rgb), 0.05);

    /* ==================== SHORT ALIASES (for layout.css and components) ==================== */
    --primary: var(--color-primary);
    --primary-hover: var(--color-primary-hover);
    --primary-light: var(--color-primary-light);
    --primary-subtle: var(--color-primary-subtle);
    --bg-white: var(--bg-surface);
    --border: var(--border-color);
    --border-light: var(--border-color-light);
    --success: var(--color-success);
    --success-bg: var(--color-success-light);
    --warning: var(--color-warning);
    --warning-bg: var(--color-warning-light);
    --danger: var(--color-danger);
    --danger-bg: var(--color-danger-light);
    --info: var(--color-info);
    --info-bg: var(--color-info-light);
    --sidebar-collapsed: var(--sidebar-collapsed-width);
}

/* Dark mode support (future) */
@media (prefers-color-scheme: dark) {
    :root.auto-dark {
        --bg-body: #0f172a;
        --bg-surface: #1e293b;
        --bg-surface-elevated: #1f2937;
        --bg-hover: #243044;
        --bg-active: #334155;
        
        --border-color: #334155;
        --border-color-light: #1e293b;
        
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-tertiary: #94a3b8;
        --text-placeholder: #64748b;
        
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.32);
        --shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
        --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.38);
        --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.42);
    }
}