:root {
    --gpcm-bg: #f5f6f8;
    --gpcm-surface: #ffffff;
    --gpcm-ink: #111827;
    --gpcm-muted: #6b7280;
    --gpcm-line: #e5e7eb;
    --gpcm-red: #d70f0f;
    --gpcm-dark: #111827;
}

* { box-sizing: border-box; }
html { margin: 0 !important; min-height: 100%; background: var(--gpcm-bg); }
body.gpcm-clean-shell {
    margin: 0;
    min-height: 100vh;
    background: var(--gpcm-bg);
    color: var(--gpcm-ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 14px;
    line-height: 1.45;
}
body.gpcm-clean-shell.admin-bar { margin-top: 0 !important; }
body.gpcm-clean-shell #wpadminbar { display: none !important; }
.gpcm-root {
    width: 100%;
    min-height: 100vh;
    padding: 0;
    margin: 0;
}
.gpcm-fallback { min-height: 100vh; }
.gpcm-message {
    max-width: 760px;
    margin: 0 auto;
    padding: 80px 24px;
    text-align: center;
}
.gpcm-message h1 {
    margin: 0 0 12px;
    font-size: 32px;
    letter-spacing: -0.04em;
}
.gpcm-message p {
    margin: 0;
    color: var(--gpcm-muted);
}

body.gpcm-clean-shell h1,
body.gpcm-clean-shell h2,
body.gpcm-clean-shell h3,
body.gpcm-clean-shell p { margin-top: 0; }

body.gpcm-clean-shell a { color: inherit; }
body.gpcm-clean-shell input,
body.gpcm-clean-shell select,
body.gpcm-clean-shell textarea,
body.gpcm-clean-shell button {
    font: inherit;
}