.kr-root {
  --kr-bg: var(--color-background, #0d1210);
  --kr-panel: var(--color-card, #151b18);
  --kr-panel-soft: color-mix(in srgb, var(--color-card, #151b18) 70%, var(--color-background, #0d1210));
  --kr-border: var(--color-border, rgba(238, 244, 238, 0.12));
  --kr-border-strong: color-mix(in srgb, var(--color-primary, #d0f2d8) 36%, var(--color-border, rgba(238,244,238,0.12)));
  --kr-fg: var(--color-foreground, #eef4ee);
  --kr-muted: var(--color-muted-foreground, #9eb5a6);
  --kr-subtle: color-mix(in srgb, var(--color-foreground, #eef4ee) 70%, transparent);
  --kr-accent: var(--color-primary, #d0f2d8);
  --kr-accent-strong: color-mix(in srgb, var(--color-primary, #d0f2d8) 80%, white);
  --kr-danger: var(--color-destructive, #e06868);
  --kr-warning: var(--color-warning, #d6c674);

  --kr-sheet-bg: #f7f5ef;
  --kr-sheet-fg: #1f1f1f;
  --kr-sheet-muted: #6b6b6b;
  --kr-sheet-rule: #d6d3cb;

  background: var(--kr-bg);
  color: var(--kr-fg);
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 57px);
}

.kr-banner {
  align-items: center;
  border-bottom: 1px solid var(--kr-border);
  display: flex;
  gap: 12px;
  justify-content: space-between;
  padding: 8px 16px;
}

.kr-banner-error {
  background: color-mix(in srgb, var(--kr-danger) 14%, var(--kr-bg));
  color: var(--kr-danger);
}

.kr-banner-info {
  background: color-mix(in srgb, var(--kr-warning) 14%, var(--kr-bg));
  color: var(--kr-warning);
}

.kr-banner-close {
  background: transparent;
  border: 0;
  color: inherit;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 0 6px;
}

.kr-grid {
  display: grid;
  flex: 1;
  grid-template-columns: minmax(260px, 320px) minmax(380px, 1fr) minmax(360px, 1fr);
  min-height: 0;
}

.kr-sidebar {
  background: var(--kr-panel-soft);
  border-right: 1px solid var(--kr-border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.kr-sidebar-head {
  align-items: center;
  border-bottom: 1px solid var(--kr-border);
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 10px 12px;
}

.kr-search {
  background: var(--kr-bg);
  border: 1px solid var(--kr-border);
  border-radius: 6px;
  color: var(--kr-fg);
  font-size: 13px;
  padding: 6px 10px;
}

.kr-search:focus { border-color: var(--kr-border-strong); outline: none; }

.kr-rows {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 6px;
}

.kr-row {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  color: inherit;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  text-align: left;
  transition: background 120ms ease, border-color 120ms ease;
}

.kr-row + .kr-row { margin-top: 2px; }
.kr-row:hover { background: color-mix(in srgb, var(--kr-accent) 8%, transparent); }
.kr-row-active {
  background: color-mix(in srgb, var(--kr-accent) 18%, transparent);
  border-color: var(--kr-border-strong);
}

.kr-row-head { align-items: baseline; display: flex; gap: 8px; }
.kr-row-subject {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.kr-row-time { color: var(--kr-muted); font-size: 11px; white-space: nowrap; }

.kr-row-meta {
  align-items: center;
  color: var(--kr-muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 12px;
  gap: 6px;
}

.kr-row-preview {
  color: var(--kr-muted);
  font-size: 12px;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kr-row-tags { display: flex; flex-wrap: wrap; gap: 4px; }

.kr-sidebar-foot {
  border-top: 1px solid var(--kr-border);
  color: var(--kr-muted);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 8px 12px;
  text-transform: uppercase;
}

.kr-empty {
  color: var(--kr-muted);
  font-size: 13px;
  padding: 24px 16px;
  text-align: center;
}

.kr-status-badge {
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 1px 7px;
}

.kr-status-draft { color: var(--kr-warning); }
.kr-status-sent { color: var(--kr-accent); }

.kr-composer {
  background: var(--kr-bg);
  border-right: 1px solid var(--kr-border);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;
}

.kr-composer-empty {
  align-items: center;
  color: var(--kr-muted);
  display: flex;
  flex: 1;
  font-size: 14px;
  justify-content: center;
  text-align: center;
}

.kr-composer-bar {
  align-items: center;
  background: var(--kr-panel);
  border-bottom: 1px solid var(--kr-border);
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 10px 16px;
  position: sticky;
  top: 0;
  z-index: 2;
}

.kr-subject-input {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--kr-fg);
  font-size: 18px;
  font-weight: 500;
  padding: 6px 10px;
}
.kr-subject-input:focus { border-color: var(--kr-border-strong); outline: none; }

.kr-composer-actions { display: flex; gap: 8px; }

.kr-meta {
  border-bottom: 1px solid var(--kr-border);
  color: var(--kr-muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 11px;
  gap: 18px;
  letter-spacing: 0.04em;
  padding: 6px 16px;
  text-transform: uppercase;
}
.kr-meta-cell { white-space: nowrap; }
.kr-meta-status { color: var(--kr-subtle); }

.kr-cards {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
  padding: 14px 16px 0;
}

.kr-card {
  background: var(--kr-panel-soft);
  border: 1px solid var(--kr-border);
  border-radius: 8px;
  padding: 10px 12px 12px;
}

.kr-card-legend {
  color: var(--kr-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 0 6px;
  text-transform: uppercase;
}

.kr-card-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: 1fr 1fr;
  margin-top: 4px;
}

.kr-field-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.kr-field-full { grid-column: 1 / -1; }

.kr-field-label {
  color: var(--kr-muted);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.kr-field-input {
  background: var(--kr-bg);
  border: 1px solid var(--kr-border);
  border-radius: 4px;
  color: var(--kr-fg);
  font-size: 12px;
  padding: 5px 8px;
}
.kr-field-input:focus { border-color: var(--kr-border-strong); outline: none; }

.kr-tags-row {
  align-items: center;
  border-top: 1px solid var(--kr-border);
  display: grid;
  gap: 12px;
  grid-template-columns: auto minmax(220px, 380px);
  margin: 14px 16px 0;
  padding-top: 10px;
}

.kr-tags-label {
  color: var(--kr-muted);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.kr-tags-input {
  background: var(--kr-panel-soft);
  border: 1px solid var(--kr-border);
  border-radius: 6px;
  color: var(--kr-fg);
  font-size: 12px;
  padding: 5px 10px;
}
.kr-tags-input:focus { border-color: var(--kr-border-strong); outline: none; }

.kr-prose {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
}

.kr-prose-label {
  color: var(--kr-muted);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.kr-prose-input {
  background: var(--kr-panel-soft);
  border: 1px solid var(--kr-border);
  border-radius: 4px;
  color: var(--kr-fg);
  font-size: 13px;
  padding: 6px 10px;
}
.kr-prose-input:focus { border-color: var(--kr-border-strong); outline: none; }

.kr-prose-textarea {
  background: var(--kr-panel-soft);
  border: 1px solid var(--kr-border);
  border-radius: 4px;
  color: var(--kr-fg);
  font-family: ui-serif, Georgia, "Times New Roman", serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 220px;
  padding: 12px 14px;
  resize: vertical;
}
.kr-prose-textarea:focus { border-color: var(--kr-border-strong); outline: none; }

.kr-preview {
  background: color-mix(in srgb, var(--kr-bg) 60%, black);
  display: flex;
  justify-content: center;
  min-height: 0;
  overflow-y: auto;
  padding: 20px 18px;
}

.kr-preview-empty {
  align-items: center;
  color: var(--kr-muted);
  font-size: 13px;
  justify-content: center;
}

.kr-sheet {
  background: var(--kr-sheet-bg);
  color: var(--kr-sheet-fg);
  display: flex;
  flex-direction: column;
  font-family: ui-serif, Georgia, "Times New Roman", serif;
  gap: 14px;
  line-height: 1.55;
  max-width: 540px;
  min-height: 720px;
  padding: 56px 56px 64px;
  width: 100%;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.36);
}

.kr-sheet-header {
  border-bottom: 1px solid var(--kr-sheet-rule);
  padding-bottom: 10px;
}

.kr-sheet-org {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.kr-sheet-placeholder {
  color: var(--kr-sheet-muted);
  font-style: italic;
  font-weight: 400;
}

.kr-sheet-name { font-size: 13px; margin-top: 2px; }
.kr-sheet-addr { color: var(--kr-sheet-muted); font-size: 11px; }

.kr-sheet-recipient {
  font-size: 14px;
  margin-top: 24px;
}

.kr-sheet-date {
  color: var(--kr-sheet-muted);
  font-size: 12px;
  margin-top: 12px;
  text-align: right;
}

.kr-sheet-patient {
  border: 1px solid var(--kr-sheet-rule);
  border-radius: 2px;
  font-size: 12px;
  margin-top: 6px;
  padding: 6px 10px;
}

.kr-sheet-subject {
  font-size: 15px;
  font-weight: 600;
  margin-top: 18px;
}

.kr-sheet-opening { margin-top: 18px; }
.kr-sheet-body {
  font-size: 14px;
  margin-top: 8px;
  white-space: pre-wrap;
}
.kr-sheet-closing { margin-top: 22px; }
.kr-sheet-signature {
  border-top: 1px solid var(--kr-sheet-rule);
  font-size: 13px;
  margin-top: 28px;
  padding-top: 4px;
  width: 60%;
}

.kr-tag {
  background: color-mix(in srgb, var(--kr-accent) 16%, transparent);
  border: 1px solid color-mix(in srgb, var(--kr-accent) 38%, transparent);
  border-radius: 999px;
  color: var(--kr-accent);
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 2px 8px;
}

.kr-tag-mini { font-size: 10px; padding: 1px 6px; }

.kr-btn {
  background: var(--kr-panel-soft);
  border: 1px solid var(--kr-border);
  border-radius: 6px;
  color: var(--kr-fg);
  cursor: pointer;
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  text-transform: uppercase;
  transition: background 120ms ease, border-color 120ms ease;
}
.kr-btn:hover:not(:disabled) { border-color: var(--kr-border-strong); }
.kr-btn:disabled { cursor: not-allowed; opacity: 0.55; }

.kr-btn-primary {
  background: var(--kr-accent);
  border-color: var(--kr-accent);
  color: var(--kr-bg);
  font-weight: 600;
}
.kr-btn-primary:hover:not(:disabled) { background: var(--kr-accent-strong); }

.kr-btn-ghost { background: transparent; }

.kr-btn-danger { color: var(--kr-danger); }
.kr-btn-danger:hover:not(:disabled) {
  background: color-mix(in srgb, var(--kr-danger) 14%, transparent);
  border-color: var(--kr-danger);
}

@media (max-width: 1280px) {
  .kr-grid {
    grid-template-columns: 260px minmax(0, 1fr);
  }
  .kr-preview { display: none; }
}