:root {
    /* ===== PALETA DE CORES SISNEMA (MANTENDO IDENTIDADE) ===== */

    /* Cores Primárias - Azul Corporativo SISNEMA */
    --primary: #005DA4;
    --primary-dark: #004580;
    --primary-light: #0071CC;
    --primary-gradient: linear-gradient(135deg, #005DA4 0%, #00AEEF 100%);

    /* Cores Secundárias - Cyan Sky */
    --secondary: #00AEEF;
    --secondary-dark: #0090CC;
    --secondary-light: #33C1FF;

    /* Cores de Accent - Para certificações e badges */
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-info: #3b82f6;

    /* Cores de Fundo - Clean e Profissional */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-dark: #1a2332;
    --bg-glass: rgba(0, 93, 164, 0.05);
    --bg-glass-hover: rgba(0, 93, 164, 0.1);

    /* Cores de Texto */
    --text-primary: #1e293b;
    --text-secondary: #51555B;
    --text-muted: #94a3b8;
    --text-light: #ffffff;
    --text-link: var(--primary);

    /* Shadows - Profissionais e sutis */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.15);
    --shadow-primary: 0 8px 24px rgba(0, 93, 164, 0.25);

    /* Borders */
    --border-color: #e0e0e0;
    --border-light: #f0f0f0;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;

    /* ===== TIPOGRAFIA ===== */
    --font-body: 'Open Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-display: 'Open Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;

    /* Font Sizes - Escala profissional */
    --text-xs: 0.75rem;
    /* 12px */
    --text-sm: 0.875rem;
    /* 14px */
    --text-base: 1rem;
    /* 16px */
    --text-lg: 1.125rem;
    /* 18px */
    --text-xl: 1.25rem;
    /* 20px */
    --text-2xl: 1.5rem;
    /* 24px */
    --text-3xl: 1.875rem;
    /* 30px */
    --text-4xl: 2.25rem;
    /* 36px */
    --text-5xl: 3rem;
    /* 48px */

    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* ===== SPACING ===== */
    --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 */

    /* ===== TRANSITIONS ===== */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

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

    /* ==== CORES ESPECÍFICAS SISNEMA ==== */

    /* Certificações */
    --cert-microsoft: #00a4ef;
    --cert-cisco: #1ba0d7;
    --cert-vmware: #607078;
    --cert-linux: #FCC624;

    /* Status de Curso */
    --status-aberto: var(--accent-success);
    --status-em-breve: var(--accent-warning);
    --status-encerrado: var(--text-muted);
}

/* Modo escuro (opcional para futuras implementações) */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a2332;
        --bg-secondary: #0f172a;
        --bg-tertiary: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-muted: #64748b;
    }
}