* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  background: #f4f4f4;
  color: #000;
}

.page {
  min-height: 100vh;
  position: relative;
  padding: 2rem 1rem;
}

.bg-pattern {
  position: fixed;
  inset: 0;
  opacity: 0.08;
  pointer-events: none;
  background-image: radial-gradient(circle at 10% 20%, #000 0 1px, transparent 1px),
    radial-gradient(circle at 80% 40%, #000 0 1px, transparent 1px);
  background-size: 38px 38px;
}

.agreement-card {
  position: relative;
  width: 100%;
  max-width: 920px;
  margin: 0 auto;
  background: #fff;
  border: 2px solid #000;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.agreement-header {
  background: #000;
  color: #fff;
  padding: 3rem 5rem;
  border-bottom: 2px solid #000;
}

.agreement-header h1 {
  margin: 0 0 1.5rem;
  font-size: 3rem;
  line-height: 1.1;
}

.agreement-header p {
  margin: 0 0 1rem;
  font-size: 15px;
  line-height: 1.7;
}

.agreement-header .label {
  font-weight: 600;
}

.agreement-header input {
  margin-left: 0.5rem;
  min-width: 220px;
  border: 0;
  border-bottom: 1px solid #fff;
  background: transparent;
  color: #fff;
  font: inherit;
  padding: 0 0.25rem;
}

.party-card {
  background: #fff;
  color: #000;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.party-card p {
  margin: 0 0 0.4rem;
  font-size: 14px;
  line-height: 1.6;
}

.party-card .party-title {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 0.6rem;
}

.party-card input {
  min-width: 220px;
  border: 0;
  border-bottom: 1px solid #000;
  color: #000;
}

.party-card .party-title input {
  width: 100%;
}

.party-card .foot {
  margin-top: 0.75rem;
  font-weight: 600;
}

.agreement-body {
  padding: 3rem 5rem;
}

.a-section {
  margin-bottom: 2.8rem;
}

.s-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.s-head span {
  width: 48px;
  height: 48px;
  background: #000;
  color: #fff;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.s-head h2 {
  margin: 0;
  font-size: 32px;
  line-height: 1.2;
}

.s-body {
  margin-left: 4rem;
}

.s-body p,
.s-body li {
  font-size: 15px;
  line-height: 1.7;
}

.s-body ul {
  margin: 0.5rem 0;
  padding-left: 1.2rem;
}

.callout-dark {
  background: #000;
  color: #fff;
  padding: 1.4rem;
  margin: 1rem 0;
}

.callout-dark p:last-child {
  margin-bottom: 0;
}

.callout-box {
  border: 2px solid #000;
  padding: 1.2rem;
  margin: 1rem 0;
}

.callout-left {
  border-left: 4px solid #000;
  padding-left: 0.9rem;
  margin: 1rem 0;
}

.signatures h2 {
  margin: 0 0 1.4rem;
  font-size: 28px;
}

.sign-card {
  border: 2px solid #000;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.sign-card .title {
  font-weight: 700;
  margin-top: 0;
}

.sign-card label {
  display: block;
  font-size: 14px;
  margin: 0 0 0.45rem;
}

.sign-card input {
  width: 100%;
  border: 0;
  border-bottom: 2px solid #000;
  background: transparent;
  font-size: 15px;
  padding: 0 0 0.35rem;
  margin-bottom: 1rem;
}

.signature-wrap {
  border: 1px solid #000;
  height: 112px;
}

.signature-wrap canvas {
  width: 100%;
  height: 100%;
  touch-action: none;
}

.clear-signature {
  margin: 0.45rem 0 1rem auto;
  display: block;
  font-size: 13px;
  background: none;
  border: 0;
  text-decoration: underline;
  cursor: pointer;
}

.submit-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.submit-row button {
  background: #000;
  color: #fff;
  border: 0;
  font-size: 15px;
  font-weight: 700;
  padding: 0.75rem 2rem;
  cursor: pointer;
}

.submit-row button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.error {
  color: #a30000;
  font-size: 13px;
  margin: 0;
}

.hidden {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
  display: grid;
  place-items: center;
  padding: 1rem;
  z-index: 50;
}

.modal.hidden {
  display: none;
}

.modal-content {
  width: min(560px, 100%);
  background: #fff;
  border: 2px solid #000;
  padding: 1.5rem;
}

.modal-content h3 {
  margin-top: 0;
  font-size: 24px;
}

.modal-actions {
  margin-top: 1rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

.modal-actions button {
  border: 1px solid #000;
  background: #fff;
  padding: 0.55rem 1rem;
  cursor: pointer;
}

.modal-actions #download-pdf {
  background: #000;
  color: #fff;
}

@media (max-width: 920px) {
  .agreement-header,
  .agreement-body {
    padding: 1.5rem;
  }

  .agreement-header h1 {
    font-size: 34px;
  }

  .s-body {
    margin-left: 0;
  }

  .s-head h2 {
    font-size: 26px;
  }
}