:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --border: #d9dce1;
  --text: #1a1d21;
  --text-muted: #5f6772;
  --accent: #1a5fb4;
  --accent-contrast: #ffffff;
  --error: #b3261e;
  --success: #1e7a34;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

.site-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.site-header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand { font-weight: 600; }
.site-header nav { display: flex; align-items: center; gap: 12px; color: var(--text-muted); }

.site-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  margin-bottom: 20px;
}
.card.narrow { max-width: 420px; margin-left: auto; margin-right: auto; }

h1 { font-size: 22px; margin-top: 0; }
h2 { font-size: 17px; }

.row-between { display: flex; justify-content: space-between; align-items: center; }

.hint { color: var(--text-muted); font-size: 13px; }
.error { color: var(--error); }
.success { color: var(--success); }

label { display: block; font-weight: 600; margin: 14px 0 4px; font-size: 13px; }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=time], textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}
textarea { resize: vertical; }

button, .button, input[type=submit] {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-contrast);
  border: none;
  padding: 9px 16px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  margin-top: 16px;
}
button.row-remove, button.row-add, button.signature-clear {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 10px;
  margin-top: 6px;
}
.link-button {
  background: none;
  border: none;
  color: var(--accent);
  text-decoration: underline;
  padding: 0;
  margin: 0;
  cursor: pointer;
  font-size: 14px;
}
.inline-form { display: inline; }

.data-table, .field-table { width: 100%; border-collapse: collapse; margin: 10px 0; }
.data-table th, .data-table td, .field-table th, .field-table td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: left;
  font-size: 13px;
}
.field-table input { width: 100%; border: none; padding: 4px; }
.field-table .row-label { font-weight: 600; white-space: nowrap; }

.badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #e4e7eb;
  color: var(--text-muted);
  text-transform: capitalize;
}
.badge-submitted, .badge-complete { background: #dff3e3; color: var(--success); }
.badge-reviewed { background: #dbe9fb; color: var(--accent); }
.badge-invited, .badge-draft { background: #fff2d6; color: #8a5d00; }
.badge-sensitive { background: #fde3e1; color: var(--error); }

.form-list { list-style: none; padding: 0; }
.form-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.form-list li:last-child { border-bottom: none; }

.field-info {
  background: #f0f2f5;
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text-muted);
  white-space: pre-line;
}

.radio-option { display: inline-flex; align-items: center; gap: 4px; font-weight: 400; margin-right: 16px; }

.signature-canvas {
  border: 1px dashed var(--border);
  border-radius: 6px;
  background: #fff;
  touch-action: none;
  max-width: 100%;
}
.signature-existing { margin-bottom: 8px; }

.detail-list { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; }
.detail-list dt { color: var(--text-muted); font-size: 13px; }
.detail-list dd { margin: 0; }

.submission { border: 1px solid var(--border); border-radius: 8px; margin-bottom: 10px; padding: 10px 14px; }
.submission summary { cursor: pointer; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.submission-body { margin-top: 12px; }
.answer-row { display: grid; grid-template-columns: 280px 1fr; gap: 8px; padding: 6px 0; border-top: 1px solid var(--border); }
.answer-row:first-child { border-top: none; }
.answer-label { color: var(--text-muted); font-size: 13px; }
.answer-empty { color: var(--text-muted); font-style: italic; }

.invite-link { background: #f0f2f5; padding: 10px; border-radius: 6px; word-break: break-all; }

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #16181c;
    --card-bg: #1e2126;
    --border: #33373e;
    --text: #eceef0;
    --text-muted: #9aa2ad;
    --accent: #6fa8f2;
    --accent-contrast: #101214;
  }
  .field-info { background: #262a31; }
  .invite-link { background: #262a31; }
}