:root {
  --bg: #0A0D12; --panel: #10141C; --panel-alt: #151A24; --raised: #1B222E;
  --line: #232B38; --line-soft: #1A212B; --text: #E7EBF2; --text-dim: #8B96A8; --text-faint: #5A6478;
  --cyan: #3FD0E0; --amber: #F5A623; --green: #48D597; --red: #F0596B;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif;
  font-size: 14px; line-height: 1.5;
}

/* ---- Top bar ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; border-bottom: 1px solid var(--line); background: var(--panel);
  position: sticky; top: 0; z-index: 10; flex-wrap: wrap; gap: 10px;
}
.topbar-title strong { font-size: 15px; }
.topbar-subtitle { display: block; font-size: 11px; color: var(--text-faint); margin-top: 2px; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }

.dirty-badge {
  display: none; font-size: 11px; padding: 3px 8px; border-radius: 999px;
  background: rgba(245,166,35,0.15); color: var(--amber); border: 1px solid rgba(245,166,35,0.4);
}

/* ---- Buttons ---- */
.btn-primary, .btn-secondary, .btn-icon {
  font-family: inherit; font-size: 12px; cursor: pointer; border-radius: 6px; border: 1px solid var(--line);
}
.btn-primary { background: var(--cyan); color: #04161A; border: none; padding: 8px 14px; font-weight: 600; }
.btn-primary:disabled { background: var(--line); color: var(--text-faint); cursor: not-allowed; }
.btn-secondary { background: var(--panel-alt); color: var(--text); padding: 8px 14px; }
.btn-icon { background: var(--panel-alt); color: var(--text-dim); width: 26px; height: 26px; padding: 0; }
.btn-icon:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-danger { color: var(--red); }

/* ---- Load status ---- */
.load-status { padding: 14px 20px; font-size: 13px; color: var(--text-dim); }
.load-error { color: var(--red); }

/* ---- Layout: tabs + content ---- */
.app-shell { display: flex; max-width: 1200px; margin: 0 auto; }
.tab-nav {
  display: flex; flex-direction: column; gap: 2px; width: 260px; flex-shrink: 0;
  padding: 16px 8px; border-right: 1px solid var(--line); position: sticky; top: 61px;
  align-self: flex-start; max-height: calc(100vh - 61px); overflow-y: auto;
}
.tab-btn {
  text-align: left; background: transparent; border: none; color: var(--text-dim);
  padding: 9px 12px; border-radius: 6px; font-size: 13px; cursor: pointer; font-family: inherit;
}
.tab-btn:hover { background: var(--panel-alt); }
.tab-btn.active { background: var(--raised); color: var(--cyan); font-weight: 600; }

.tab-content { flex: 1; padding: 20px 24px 80px; max-width: 760px; }
.tab-header h2 { margin: 0 0 4px; font-size: 18px; }
.tab-header p { margin: 0 0 20px; color: var(--text-dim); font-size: 13px; }

/* ---- Fields ---- */
.field { margin-bottom: 22px; padding-bottom: 18px; border-bottom: 1px solid var(--line-soft); }
.field-locked { opacity: 0.85; }
.field-label-row label { font-size: 13px; font-weight: 600; }
.field-description { font-size: 12px; color: var(--text-dim); margin-top: 3px; }
.field-meta { font-size: 11px; color: var(--text-faint); margin-top: 4px; }
.field-warning {
  font-size: 11px; color: var(--amber); margin-top: 6px; padding: 6px 8px;
  background: rgba(245,166,35,0.08); border: 1px solid rgba(245,166,35,0.3); border-radius: 5px;
}
.field-locked-note {
  font-size: 11px; color: var(--text-faint); margin-top: 6px; padding: 6px 8px;
  background: var(--panel-alt); border: 1px solid var(--line); border-radius: 5px;
}
.field-readonly-value { margin-top: 8px; font-size: 13px; color: var(--text-dim); font-family: 'JetBrains Mono', monospace; }
.field-error { font-size: 11px; color: var(--red); margin-top: 5px; min-height: 14px; }

/* ---- Inputs ---- */
.input {
  width: 100%; max-width: 480px; margin-top: 8px; padding: 7px 10px; border-radius: 6px;
  background: var(--raised); border: 1px solid var(--line); color: var(--text); font-size: 13px; font-family: inherit;
}
textarea.input { min-height: 70px; resize: vertical; }
.input-number { max-width: 140px; }

/* ---- Toggle switch ---- */
.toggle { position: relative; display: inline-block; width: 40px; height: 22px; margin-top: 8px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; cursor: pointer; inset: 0; background: var(--line); border-radius: 999px; transition: 0.15s;
}
.toggle-slider::before {
  content: ""; position: absolute; height: 16px; width: 16px; left: 3px; top: 3px;
  background: var(--text); border-radius: 50%; transition: 0.15s;
}
.toggle input:checked + .toggle-slider { background: var(--cyan); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); background: #04161A; }

/* ---- Editable list ---- */
.editable-list { margin-top: 8px; }
.list-row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.list-row .input { margin-top: 0; max-width: 320px; }

/* ---- Checklist ---- */
.checklist { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.checklist-item { font-size: 13px; display: flex; align-items: center; gap: 6px; cursor: pointer; }

/* ---- Number map ---- */
.number-map { margin-top: 8px; }
.number-map-label { display: inline-block; width: 120px; font-size: 12px; color: var(--text-dim); }

/* ---- Modal ---- */
.modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.65); z-index: 100;
  align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  width: 100%; max-width: 720px; max-height: 85vh; display: flex; flex-direction: column;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.modal-header h2 { margin: 0; font-size: 15px; }
.modal-body { padding: 14px 18px; overflow-y: auto; flex: 1; }
.modal-footer { padding: 14px 18px; border-top: 1px solid var(--line); }
.modal-footer-buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 10px; }
.commit-message-label { font-size: 11px; color: var(--text-faint); display: block; margin-bottom: 4px; }

.review-errors { background: rgba(240,89,107,0.08); border: 1px solid rgba(240,89,107,0.35); border-radius: 6px; padding: 10px 12px; margin-bottom: 14px; font-size: 12px; }
.review-errors ul { margin: 6px 0 0; padding-left: 18px; }

.diff-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.diff-table th { text-align: left; padding: 6px 8px; color: var(--text-faint); font-size: 10px; text-transform: uppercase; border-bottom: 1px solid var(--line); }
.diff-table td { padding: 6px 8px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.diff-before { color: var(--red); text-decoration: line-through; opacity: 0.8; }
.diff-after { color: var(--green); }

.save-status { font-size: 12px; margin-top: 10px; min-height: 16px; }
.save-success { color: var(--green); }
.save-error { color: var(--red); }