:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --primary: #1d4ed8;
  --primary-dark: #1e3a8a;
  --border: #e2e5ea;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --success: #15803d;
  --success-bg: #f0fdf4;
  --warn-bg: #fffbeb;
  --warn: #92400e;
}

* { box-sizing: border-box; }

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

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  gap: 10px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.topbar h1 { font-size: 18px; margin: 0; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.topbar nav a { color: var(--text); text-decoration: none; font-size: 14px; padding: 4px 0; }
.topbar nav a:hover { color: var(--primary); }

.container {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 20px;
}

h2 { margin-top: 0; font-size: 20px; }

label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; margin-top: 14px; color: var(--muted); }

input[type=text], input[type=email], input[type=tel], input[type=password], textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}

input[type=checkbox] {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  accent-color: var(--primary);
}

button {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  border: none;
  padding: 10px 18px;
  cursor: pointer;
  background: var(--primary);
  color: white;
}
button:hover { background: var(--primary-dark); }
button.secondary { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
button.secondary:hover { background: #eff4ff; }
button.danger { background: var(--danger); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.signer-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.error-box {
  display: none;
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #fecaca;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 14px;
  margin-top: 14px;
}

.notice-box {
  background: var(--warn-bg);
  color: var(--warn);
  border: 1px solid #fde68a;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
}

.success-box {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid #bbf7d0;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 14px;
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-draft, .badge-pending, .badge-sent { background: #e0e7ff; color: #3730a3; }
.badge-viewed { background: #fef9c3; color: #854d0e; }
.badge-signed, .badge-completed { background: var(--success-bg); color: var(--success); }
.badge-declined { background: var(--danger-bg); color: var(--danger); }

a.doc-link { color: var(--primary); text-decoration: none; font-weight: 600; }
a.doc-link:hover { text-decoration: underline; }

.muted { color: var(--muted); font-size: 13px; }

.audit-list { list-style: none; padding: 0; margin: 0; font-size: 13px; }
.audit-list li { padding: 8px 0; border-bottom: 1px solid var(--border); }
.audit-list li:last-child { border-bottom: none; }

embed.pdf-preview { width: 100%; height: 480px; border: 1px solid var(--border); border-radius: 8px; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 18, 26, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-box {
  background: var(--card);
  border-radius: 10px;
  padding: 24px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.modal-box p { margin: 0 0 18px; font-size: 14px; line-height: 1.5; }
.modal-box input { margin-bottom: 4px; }
.modal-box .modal-error { color: var(--danger); font-size: 13px; margin: 6px 0 0; display: none; }
.modal-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; margin-top: 18px; }

.row-actions { text-align: right; }

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 6px;
  font-size: 18px;
  line-height: 1;
}
.icon-btn:hover { background: #f3f4f6; color: var(--text); }

.dropdown-menu {
  position: fixed;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  min-width: 190px;
  padding: 6px;
  z-index: 1000;
}
.dropdown-menu button {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text);
  font-weight: 500;
  font-size: 14px;
  padding: 9px 10px;
  border-radius: 6px;
  cursor: pointer;
}
.dropdown-menu button:hover { background: #f3f4f6; }
.dropdown-menu button.danger-item { color: var(--danger); }
.dropdown-menu button.danger-item:hover { background: var(--danger-bg); }
.dropdown-menu hr { border: none; border-top: 1px solid var(--border); margin: 6px 0; }

@media (max-width: 640px) {
  .topbar { padding: 12px 16px; }
  .topbar nav { width: 100%; gap: 10px 14px; }

  .container { margin: 20px auto; padding: 0 14px; }
  .card { padding: 18px; }

  .signer-row { grid-template-columns: 1fr; gap: 6px; }

  .card-table { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  table { font-size: 13px; }
  th, td { padding: 8px 6px; }

  .modal-box { padding: 18px; }
  .modal-actions button { flex: 1 1 auto; }

  input[type=checkbox] { width: 26px; height: 26px; }
}