:root {
  --ink: #1a1a1a;
  --muted: #555;
  --line: #d8d8d8;
  --accent: #0d5c3d;
  --accent-soft: #e8f3ed;
  --danger: #b42318;
  --ok: #067647;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 1rem 1rem 6.5rem;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  background: #f4f4f4;
}

.page {
  max-width: 780px;
  margin: 0 auto;
  background: #fff;
  padding: 2rem 2.25rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  border-radius: 8px;
}

.top-bar {
  max-width: 780px;
  margin: 0 auto 1rem;
  padding: 0.85rem 1rem;
  background: var(--accent-soft);
  border: 1px solid #b9dcc8;
  border-radius: 8px;
  font-size: 14px;
}

.top-bar-home {
  display: inline-block;
  margin-left: 0.75rem;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.top-bar-home:hover {
  text-decoration: underline;
}

.top-bar strong {
  color: var(--accent);
}

h1 {
  font-size: 1.45rem;
  margin: 0 0 0.35rem;
  color: var(--accent);
}

.subtitle {
  color: var(--muted);
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
}

h2 {
  font-size: 1.05rem;
  margin: 1.75rem 0 0.65rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--accent);
  color: var(--accent);
}

p {
  margin: 0.5rem 0;
}

ul,
ol {
  margin: 0.5rem 0;
  padding-right: 1.25rem;
}

li {
  margin: 0.35rem 0;
}

strong {
  font-weight: 700;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.75rem 0;
  font-size: 14px;
}

th,
td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.75rem;
  text-align: right;
  vertical-align: top;
}

th {
  background: #f7f7f7;
  width: 38%;
  font-weight: 600;
}

.section-num {
  font-weight: 700;
  color: var(--accent);
}

.field {
  width: 100%;
  padding: 0.45rem 0.55rem;
  border: 2px solid var(--line);
  border-radius: 6px;
  font: inherit;
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(13, 92, 61, 0.15);
}

.field.invalid {
  border-color: var(--danger);
  background: #fff5f5;
  box-shadow: 0 0 0 3px rgba(180, 35, 24, 0.18);
}

tr.field-row-invalid td {
  background: #fff8f8;
}

tr.field-row-invalid .field.invalid {
  border-color: var(--danger);
}

.field-error {
  display: none;
  margin-top: 0.35rem;
  font-size: 13px;
  font-weight: 600;
  color: var(--danger);
}

.field-error.visible {
  display: block;
}

.field-error.visible::before {
  content: "! ";
}

.field-hint {
  display: block;
  margin-top: 0.2rem;
  font-size: 12px;
  color: var(--muted);
}

.payment-choice {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0.75rem 0 1rem;
}

.payment-choice label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
}

.payment-panel {
  display: none;
}

.payment-panel.active {
  display: block;
}

.sign-block {
  margin-top: 1.5rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fafafa;
}

.sign-block h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--accent);
}

.signature-wrap {
  border: 2px dashed #999;
  border-radius: 8px;
  background: #fff;
  touch-action: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.signature-wrap.invalid {
  border-color: var(--danger);
  border-style: solid;
  box-shadow: 0 0 0 3px rgba(180, 35, 24, 0.18);
}

#signature-canvas {
  display: block;
  width: 100%;
  height: 160px;
  cursor: crosshair;
}

.sign-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.65rem;
}

.agree-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin: 1.25rem 0;
  padding: 0.65rem 0.75rem;
  border: 2px solid transparent;
  border-radius: 8px;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.agree-row.invalid {
  border-color: var(--danger);
  background: #fff5f5;
}

.agree-row input {
  margin-top: 0.25rem;
}

.action-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  padding: 0.85rem 1rem calc(0.85rem + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.96);
  border-top: 1px solid var(--line);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}

.action-bar-inner {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  justify-content: space-between;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 8px;
  padding: 0.7rem 1.1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-secondary {
  background: #fff;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.status {
  display: none;
  max-width: 780px;
  margin: 1rem auto 0;
  padding: 1rem;
  border-radius: 8px;
  font-size: 14px;
}

.status.visible {
  display: block;
}

.status.ok {
  background: #ecfdf3;
  border: 1px solid #abefc6;
  color: var(--ok);
}

.status.err {
  background: #fef3f2;
  border: 2px solid var(--danger);
  color: var(--danger);
  font-weight: 600;
}

.success-panel {
  display: none;
  max-width: 780px;
  margin: 1rem auto;
  padding: 1.5rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.success-panel.visible {
  display: block;
}

.success-panel h2 {
  border: 0;
  margin-top: 0;
}

.hidden {
  display: none !important;
}

@media print {
  body {
    background: #fff;
    padding: 0;
  }

  .top-bar,
  .action-bar,
  .sign-block,
  .agree-row,
  .status,
  .no-print {
    display: none !important;
  }

  .page {
    box-shadow: none;
    padding: 0;
    max-width: none;
  }
}

@media (max-width: 600px) {
  body {
    padding-bottom: 7.5rem;
  }

  .page {
    padding: 1.25rem;
  }

  th {
    width: 42%;
  }

  .action-bar-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}