:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --panel-soft: #f7f9fb;
  --text: #1f1f1f;
  --muted: #626b75;
  --border: #d6dbe1;
  --border-strong: #aeb7c2;
  --accent: #0f6cbd;
  --accent-hover: #115ea3;
  --good: #107c10;
  --good-soft: #eff8ef;
  --warn: #8a5d00;
  --warn-soft: #fff7df;
  --bad: #c42b1c;
  --bad-soft: #fdeeee;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; font-family: "Segoe UI", Arial, sans-serif; background: var(--bg); color: var(--text); font-size: 13px; }
body { min-width: 0; }
button, input, select { font: inherit; }
.hidden { display: none !important; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.shell { width: 100%; max-width: 430px; margin: 0 auto; padding: 10px; }

.product-header { display: block; margin-bottom: 9px; padding: 0; }
.brand-hero { display: block; width: 100%; height: auto; max-height: 235px; object-fit: cover; object-position: center top; border: 1px solid var(--border); border-radius: 11px; box-shadow: var(--shadow); background: #09101d; }
.brand-header-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 2px 0; }
.brand-copy { min-width: 0; }
.brand-line { display: flex; align-items: center; gap: 7px; min-width: 0; }
h1 { margin: 0; font-size: 22px; line-height: 1.05; letter-spacing: -.02em; }
.edition-badge { flex: 0 0 auto; border-radius: 999px; padding: 2px 7px; background: var(--good-soft); border: 1px solid color-mix(in srgb, var(--good) 40%, var(--border)); color: var(--good); font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.tagline { margin-top: 3px; color: var(--muted); font-size: 11px; }
.eyebrow { font-size: 9px; font-weight: 700; letter-spacing: .09em; color: var(--muted); }

.status-badge { display: inline-flex; align-items: center; justify-content: center; min-height: 23px; max-width: 155px; padding: 3px 8px; border-radius: 999px; border: 1px solid var(--border); background: var(--panel-soft); color: var(--muted); font-size: 10px; font-weight: 700; line-height: 1.15; text-align: center; overflow-wrap: anywhere; }
.status-badge.good { color: var(--good); border-color: color-mix(in srgb, var(--good) 45%, var(--border)); background: var(--good-soft); }
.status-badge.bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 45%, var(--border)); background: var(--bad-soft); }
.status-badge.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, var(--border)); background: var(--warn-soft); }
.status-badge.neutral { color: var(--muted); }

.account-strip { display: flex; justify-content: space-between; align-items: center; gap: 6px; margin-bottom: 8px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 9px; background: var(--panel); box-shadow: var(--shadow); }
.license-strip { display: flex; justify-content: space-between; align-items: center; gap: 6px; margin-bottom: 8px; padding: 7px 8px; border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border)); border-radius: 9px; background: var(--panel); box-shadow: var(--shadow); }
.license-copy { display: flex; align-items: center; justify-content: space-between; gap: 6px; min-width: 0; flex: 1 1 auto; }
.license-copy h2 { margin: 0; font-size: 13px; }
.account-copy { display: flex; align-items: center; gap: 6px; min-width: 0; }
.account-copy h2 { margin: 0; font-size: 13px; }
.connection-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--good); flex: 0 0 auto; }
.account-actions { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
.compact-copy { margin: 2px 0 0 !important; max-width: 210px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.summary-card, .warning-card, .error-card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 10px; margin-bottom: 9px; box-shadow: var(--shadow); }
.send-card { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; margin-bottom: 7px; }
.compact-heading { align-items: center; }
h2 { font-size: 14px; margin: 1px 0 0; line-height: 1.2; }
.helper-text, .control-help, .capture-meta, .field-meta, .folder-status { color: var(--muted); font-size: 10px; line-height: 1.35; }
.helper-text { margin-bottom: 8px; }
.capture-meta { margin-bottom: 5px; }

.primary-button, .secondary-button, .icon-button { min-height: 30px; border-radius: 6px; padding: 4px 9px; cursor: pointer; font-weight: 600; }
.primary-button { border: 1px solid var(--accent); background: var(--accent); color: white; }
.primary-button:hover:not(:disabled) { background: var(--accent-hover); }
.secondary-button { border: 1px solid var(--border-strong); background: var(--panel); color: var(--text); }
.secondary-button:hover:not(:disabled), .icon-button:hover:not(:disabled) { background: var(--panel-soft); }
.compact-button { min-height: 26px; padding: 3px 7px; font-size: 10px; }
.icon-button { width: 29px; padding: 0; border: 1px solid var(--border-strong); background: var(--panel); color: var(--text); font-size: 16px; }
button:disabled { cursor: not-allowed; opacity: .5; }
.button-row { display: flex; flex-wrap: wrap; gap: 6px; }

.rule-toggle-line { display: flex; align-items: center; justify-content: space-between; margin: 3px 0 4px; }
.switch-row { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; cursor: pointer; }
.switch-row input { width: 17px; height: 17px; accent-color: var(--accent); }
.control-label { display: block; font-size: 11px; font-weight: 600; margin: 8px 0 4px; }
.text-input, .select-input { width: 100%; min-width: 0; min-height: 32px; border: 1px solid var(--border-strong); border-radius: 6px; background: var(--panel); color: var(--text); padding: 5px 7px; }
.text-input:disabled, .select-input:disabled { background: var(--panel-soft); color: var(--muted); }
.folder-label-row { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.folder-status { margin-top: 4px; min-height: 14px; }
.good-text { color: var(--good); }
.bad-text { color: var(--bad); }
.muted { color: var(--muted); }

.preview-box { margin-top: 8px; padding: 7px 8px; border: 1px solid var(--border); border-radius: 7px; }
.preview-label { font-size: 8px; font-weight: 700; letter-spacing: .08em; margin-bottom: 2px; }
.preview-box strong { display: block; font-size: 12px; }
.preview-box p { margin: 2px 0 0; line-height: 1.3; font-size: 10px; }
.neutral-preview { background: var(--panel-soft); }
.good-preview { background: var(--good-soft); border-color: color-mix(in srgb, var(--good) 40%, var(--border)); }
.good-preview .preview-label, .good-preview strong { color: var(--good); }
.warning-preview { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); }
.warning-preview .preview-label, .warning-preview strong { color: var(--warn); }

.send-button { width: 100%; min-height: 38px; margin-top: 8px; border: 1px solid var(--accent); border-radius: 7px; padding: 7px 11px; cursor: pointer; font-weight: 700; background: var(--accent); color: white; }
.send-button:hover:not(:disabled) { background: var(--accent-hover); }
.send-summary { margin-top: 6px; font-size: 10px; line-height: 1.35; }

.product-panel { margin: 0 0 8px; border: 1px solid var(--border); border-radius: 10px; background: var(--panel); box-shadow: var(--shadow); overflow: hidden; }
.product-panel > summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 9px 10px; cursor: pointer; user-select: none; }
.product-panel > summary::-webkit-details-marker { display: none; }
.product-panel > summary::after { content: '›'; margin-left: 3px; color: var(--muted); font-size: 18px; transform: rotate(0deg); transition: transform .15s ease; }
.product-panel[open] > summary::after { transform: rotate(90deg); }
.panel-title { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 700; min-width: 0; }
.panel-icon { display: inline-grid; width: 20px; height: 20px; place-items: center; color: var(--accent); font-size: 14px; }
.panel-meta { color: var(--muted); font-size: 10px; margin-left: auto; }
.panel-body { border-top: 1px solid var(--border); padding: 9px 10px 10px; }
.secondary-panel .panel-body { padding-top: 5px; }
.support-panel { margin-top: 10px; opacity: .92; }
.support-note { margin-top: 8px; font-size: 9px; color: var(--muted); line-height: 1.35; }
.support-block + .support-block { margin-top: 10px; }

.gauntlet-summary { margin-top: 6px; font-size: 10px; line-height: 1.35; }
.gauntlet-results { display: grid; gap: 5px; margin-top: 6px; max-height: 220px; overflow: auto; }
.compact-results { max-height: 130px; }
.gauntlet-result { border: 1px solid var(--border); border-radius: 6px; padding: 6px 7px; background: var(--panel-soft); font-size: 10px; line-height: 1.3; }
.gauntlet-result.pass { border-color: color-mix(in srgb, var(--good) 45%, var(--border)); }
.gauntlet-result.fail { border-color: color-mix(in srgb, var(--bad) 55%, var(--border)); background: var(--bad-soft); }
.gauntlet-result strong { display: block; margin-bottom: 2px; }
.gauntlet-result.pass strong { color: var(--good); }
.gauntlet-result.fail strong { color: var(--bad); }
.rule-library { max-height: 230px; }
.rule-actions { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 5px; }
.mini-button { min-height: 25px; border: 1px solid var(--border-strong); border-radius: 5px; padding: 3px 7px; background: var(--panel); color: var(--text); cursor: pointer; font-size: 9px; font-weight: 600; }
.mini-button:hover:not(:disabled) { background: var(--panel-soft); }
.danger-mini { color: var(--bad); }

.backfill-buttons { margin-top: 8px; }
.backfill-progress { width: 100%; height: 6px; overflow: hidden; border: 1px solid var(--border); border-radius: 999px; background: var(--panel-soft); margin-top: 7px; }
.backfill-progress-bar { width: 0%; height: 100%; background: var(--accent); transition: width .2s ease; }
.diagnostic-details { margin-top: 8px; border: 1px solid var(--border); border-radius: 7px; padding: 7px; background: var(--panel-soft); }
.diagnostic-details > summary { cursor: pointer; font-weight: 700; font-size: 10px; }
.diagnostic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px; margin-top: 7px; }
.diagnostic-metric { border: 1px solid var(--border); border-radius: 6px; padding: 6px; background: var(--panel); min-width: 0; }
.diagnostic-metric strong { display: block; font-size: 14px; overflow-wrap: anywhere; }
.diagnostic-metric span { display: block; color: var(--muted); font-size: 8px; line-height: 1.2; margin-top: 2px; }
.diagnostic-metric.good strong { color: var(--good); }
.diagnostic-metric.warn strong { color: var(--warn); }
.diagnostic-actions { margin-top: 7px; }

.field-block { padding: 6px 0; border-top: 1px solid var(--border); }
.field-block:first-of-type { border-top: 0; }
.field-label { font-size: 10px; font-weight: 600; margin-bottom: 4px; }
.row-label { display: flex; justify-content: space-between; gap: 8px; }
.recipient-list { display: grid; gap: 4px; }
.recipient-list.empty { color: var(--muted); }
.recipient { border: 1px solid var(--border); border-radius: 6px; padding: 5px 6px; background: var(--panel-soft); overflow-wrap: anywhere; }
.recipient-name { font-size: 11px; font-weight: 600; }
.recipient-email { font-size: 10px; color: var(--muted); margin-top: 1px; }
.text-value { overflow-wrap: anywhere; line-height: 1.35; }
.body-preview { border: 1px solid var(--border); border-radius: 6px; background: var(--panel-soft); min-height: 42px; max-height: 120px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; padding: 6px; font-size: 10px; line-height: 1.35; }

.warning-card { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); }
.warning-card h2 { color: var(--warn); }
.warning-card ul { margin: 6px 0 0; padding-left: 17px; }
.error-card { background: var(--bad-soft); border-color: color-mix(in srgb, var(--bad) 45%, var(--border)); }
.error-card strong { color: var(--bad); }
.error-card p { margin: 3px 0 0; line-height: 1.35; }

@media (max-width: 340px) {
  .shell { padding: 8px; }
  .brand-hero { max-height: 210px; }
  .brand-header-row { align-items: flex-start; }
  .brand-header-row > .status-badge { flex: 0 0 auto; }
  .account-strip, .license-strip { align-items: flex-start; flex-direction: column; }
  .account-actions { width: 100%; justify-content: flex-start; }
  .button-row > button { flex: 1 1 auto; }
  .diagnostic-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111315;
    --panel: #1b1f23;
    --panel-soft: #23282d;
    --text: #f4f5f6;
    --muted: #aeb7c0;
    --border: #3b434b;
    --border-strong: #64707c;
    --accent: #479ef5;
    --accent-hover: #62abf5;
    --good: #6ccb5f;
    --good-soft: #132913;
    --warn: #f7c951;
    --warn-soft: #332b12;
    --bad: #ff99a4;
    --bad-soft: #35171b;
    --shadow: none;
  }
  .primary-button, .send-button { color: #07111a; }
}

@media (forced-colors: active) {
  .summary-card, .account-strip, .license-strip, .product-panel, .preview-box, .recipient, .body-preview, .warning-card, .error-card, .diagnostic-details, .diagnostic-metric, .mini-button { border: 1px solid CanvasText; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}