:root { font-family: system-ui, sans-serif; color: #1f2937; background: #f8fafc; }
body { margin: 0; }
.container { width: min(720px, calc(100% - 32px)); margin: 48px auto; }
h1 { margin-bottom: 28px; }
form, .note { background: white; padding: 20px; border-radius: 10px; box-shadow: 0 1px 3px #00000018; }
label, textarea { display: block; width: 100%; box-sizing: border-box; }
label { margin-bottom: 8px; font-weight: 600; }
textarea { resize: vertical; padding: 10px; border: 1px solid #cbd5e1; border-radius: 6px; font: inherit; }
button { margin-top: 12px; padding: 10px 16px; border: 0; border-radius: 6px; background: #2563eb; color: white; font: inherit; cursor: pointer; }
button:hover { background: #1d4ed8; }
h2 { margin-top: 32px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.section-heading h2 { margin-bottom: 16px; }
.danger { background: #dc2626; }
.danger:hover { background: #b91c1c; }
.remove-note { display: block; margin-left: auto; padding: 7px 12px; font-size: .875rem; }
.notes { display: grid; gap: 12px; }
.note p { margin: 0 0 12px; white-space: pre-wrap; overflow-wrap: anywhere; }
time { color: #64748b; font-size: .875rem; }
.error { min-height: 1.25em; color: #b91c1c; margin: 8px 0 0; }