* {
  box-sizing: border-box;
}

:root {
  --ink: #28342e;
  --forest: #4c624f;
  --sage: #81927f;
  --sand: #d8d2c5;
  --paper: #f9f8f4;
  --muted: #6e756f;
  --line: #d9ddd8;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Futura", "Trebuchet MS", Arial, sans-serif;
  color: var(--ink);
  background: #ececea;
}

button,
input {
  font: inherit;
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(480px, 0.95fr);
  min-height: 100vh;
}

.form-panel {
  background: #ffffff;
}

.form-inner {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 64px 40px;
}

.eyebrow,
.preview-label {
  margin: 0 0 12px;
  color: var(--sage);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

h1 {
  margin: 0;
  color: var(--forest);
  font-family: "Pablo Meganta Serif", "DM Serif Display", Georgia, serif;
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 400;
  line-height: 1.02;
}

h1 span {
  display: inline-block;
  color: var(--ink);
  background: linear-gradient(transparent 58%, var(--sand) 58%);
}

.intro {
  margin: 20px 0 32px;
  color: var(--muted);
  font-size: 16px;
}

form {
  border-top: 1px solid var(--line);
  padding-top: 30px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 18px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

label.full-width {
  grid-column: 1 / -1;
}

input {
  width: 100%;
  min-height: 50px;
  padding: 12px 16px;
  border: 1px solid #cfd4cf;
  border-radius: 8px;
  outline: none;
  color: var(--ink);
  background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease;
}

input:focus {
  border-color: var(--forest);
  box-shadow: 0 0 0 3px rgba(76, 98, 79, 0.13);
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}

button {
  min-width: 190px;
  min-height: 50px;
  padding: 12px 24px;
  border: 1px solid var(--forest);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

#copyButton {
  color: #fff;
  background: var(--forest);
}

.secondary-button {
  color: var(--forest);
  background: transparent;
}

.copy-status {
  min-height: 24px;
  margin: 14px 0 0;
  color: var(--forest);
  font-size: 14px;
  font-weight: 600;
}

.preview-panel {
  display: grid;
  place-items: center;
  padding: 50px 28px;
  background:
    radial-gradient(circle at top right, rgba(129, 146, 127, .22), transparent 35%),
    #ececea;
}

.preview-wrap {
  width: min(660px, 100%);
}

#signaturePreview {
  min-width: 620px;
}

.preview-note {
  margin: 18px 4px 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1100px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    min-height: 620px;
  }
}

@media (max-width: 650px) {
  .form-inner {
    padding: 42px 20px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  label.full-width {
    grid-column: auto;
  }

  .actions {
    flex-direction: column;
  }

  button {
    width: 100%;
  }

  .preview-panel {
    padding: 38px 14px;
  }

  .signature-card {
    padding: 22px 16px;
    border-radius: 16px;
  }
}