:root {
    --primary-dark: #2E4A62;
    --primary: #3A8EBA;
    --secondary-dark: #22303A;
    --light: #E0F7FA;
    --accent: #E0F7FA;
    --text-light: #ffffff;
    --text-dark: #333333;
    --success: #4CAF50;
    --warning: #FFC107;
    --danger: #F44336;
    --card-bg: rgba(255, 255, 255, 0.85);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    color: var(--text-dark);
    line-height: 1.6;
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    display: grid;
    grid-template-columns: 280px 1fr;
    grid-template-rows: 80px 1fr;
    grid-template-areas: 
        "sidebar header"
        "sidebar main";
    min-height: 100vh;
    gap: 0;
}