* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, sans-serif; background: #f5f7fb; color: #1f2430; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; background: #0c2c5a; color: #fff; }
.container { max-width: 1100px; margin: 1rem auto; padding: 0 1rem; }
.card { background: #fff; border: 1px solid #dde3ef; border-radius: 8px; padding: 1rem; margin-bottom: 1rem; }
.narrow { max-width: 420px; margin: 2rem auto; }
.form-grid { display: grid; gap: 0.75rem; }
label { display: grid; gap: 0.3rem; font-weight: 600; }
input, button, textarea { font: inherit; padding: 0.55rem; }
textarea { width: 100%; resize: vertical; }
button { width: fit-content; background: #1b5dbf; color: #fff; border: 0; border-radius: 4px; cursor: pointer; }
.btn-secondary { background: #334155; }
.copy-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; margin-bottom: 0.75rem; }
.copy-status { font-size: 0.92rem; color: #64748b; }
.copy-status.success { color: #027a48; }
.copy-status.error { color: #b42318; }
.newsletter-preview-frame { width: 100%; min-height: 720px; border: 1px solid #D7DEE8; border-radius: 6px; background: #EEF2F7; box-shadow: 0 2px 8px rgba(0, 51, 102, 0.08); }
.card h3 { color: #003366; margin-top: 0; }
.hidden-source { display: none; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid #e6ebf4; text-align: left; padding: 0.55rem; vertical-align: top; }
.checkbox { display: flex; align-items: center; gap: 0.45rem; font-weight: 500; }
.display-options { border: 1px solid #dde3ef; border-radius: 6px; padding: 0.75rem; display: grid; gap: 0.45rem; }
.display-options legend { font-weight: 600; padding: 0 0.25rem; }
.error { color: #b42318; background: #fef3f2; border: 1px solid #fecdca; padding: 0.6rem; border-radius: 4px; margin: 0 0 0.75rem; }
.hint { color: #64748b; font-size: 0.92rem; margin: 0 0 0.6rem; }
.copy-dialog-overlay { position: fixed; inset: 0; z-index: 1000; background: rgba(15, 23, 42, 0.55); display: flex; align-items: center; justify-content: center; padding: 1rem; }
.copy-dialog { width: min(900px, 100%); max-height: 90vh; background: #fff; border-radius: 8px; padding: 1rem 1.25rem; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2); display: grid; gap: 0.75rem; }
.copy-dialog h4 { margin: 0; color: #003366; }
.copy-dialog-hint { margin: 0; color: #334155; }
.copy-dialog-textarea { width: 100%; min-height: 320px; font-family: Consolas, "Courier New", monospace; font-size: 0.85rem; line-height: 1.4; border: 1px solid #cbd5e1; border-radius: 4px; padding: 0.75rem; resize: vertical; }
.copy-dialog-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.textarea-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-bottom: 0.6rem; }