:root {
    --pwa-bg: #f8fafc;
    --pwa-text: #0f172a;
    --pwa-primary: #0f766e;
}

body.pwa-app {
    margin: 0;
    background: var(--pwa-bg);
    color: var(--pwa-text);
    font-family: Tahoma, sans-serif;
}

.pwa-shell {
    max-width: 640px;
    min-height: 100vh;
    margin: 0 auto;
    background: #ffffff;
}

.pwa-home {
    padding: 24px 16px;
}