:root {
    /* Paleta global */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --background-gradient: linear-gradient(135deg, #f8fafc, #e0f2fe);
    --card-gradient: linear-gradient(145deg, #ffffff, #f8fafc);
    --primary-gradient: linear-gradient(135deg, #2563eb, #3b82f6);

    /* Sombras */
    --shadow-md: 0 4px 12px -2px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.15);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--background-gradient);
    min-height: 100vh;
}

/* Botões */
.btn-primary {
    background: var(--primary-gradient);
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}
.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

/* Cards */
.card {
    background: var(--card-gradient);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: none;
}

/* Navbar */
.navbar {
    background: var(--primary-gradient) !important;
    box-shadow: var(--shadow-md);
}

/* Tabelas */
.table {
    border-radius: 0.5rem;
    overflow: hidden;
    background: #fff;
    box-shadow: var(--shadow-md);
}
.table thead {
    background: var(--primary-light);
}