:root {
  --bg-top: #f4eedf;
  --bg-bottom: #dce9f5;
  --card: rgba(255, 255, 255, 0.88);
  --card-border: rgba(55, 62, 71, 0.2);
  --ink: #1f2831;
  --ink-soft: #44505f;
  --accent: #b4512f;
  --accent-dark: #8e3c20;
  --ok: #0d7a51;
  --error: #9d2f2f;
  --shadow: 0 18px 36px rgba(36, 44, 56, 0.14);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Sora', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 18%, rgba(255, 186, 132, 0.32), transparent 44%),
    radial-gradient(circle at 80% 0%, rgba(98, 159, 204, 0.24), transparent 40%),
    linear-gradient(165deg, var(--bg-top), var(--bg-bottom));
  padding: 24px;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: 'Source Serif 4', serif;
  letter-spacing: 0.01em;
}

p {
  margin: 0;
}

.app-shell {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 20px;
  align-items: start;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(7px);
}

.viewer-panel {
  padding: 24px;
  min-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.eyebrow {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-dark);
  font-weight: 700;
}

.lead {
  color: var(--ink-soft);
  line-height: 1.45;
  font-size: 0.95rem;
}

.pdf-frame-wrap {
  margin-top: 8px;
  border: 1px solid rgba(63, 71, 80, 0.25);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  min-height: 68vh;
}

#waiverFrame {
  border: 0;
  width: 100%;
  height: 70vh;
  display: block;
}

.pdf-fallback-note {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.pdf-fallback-link {
  color: var(--accent-dark);
  font-weight: 700;
}

.form-panel {
  padding: 24px;
}

form {
  display: grid;
  gap: 14px;
  margin-top: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

input,
textarea,
button {
  font-family: inherit;
}

input,
textarea {
  border: 1px solid rgba(65, 73, 86, 0.3);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.95rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.95);
}

input:focus,
textarea:focus {
  outline: 2px solid rgba(180, 81, 47, 0.24);
  border-color: var(--accent);
}

.field-grid {
  display: grid;
  gap: 12px;
}

.field-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.signature-row {
  align-items: start;
}

.signature-field {
  display: grid;
  gap: 8px;
}

.signature-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.signature-title {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.signature-pad-shell {
  border: 1px solid rgba(65, 73, 86, 0.3);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.95);
  padding: 4px;
}

.signature-pad {
  width: 100%;
  height: 170px;
  display: block;
  touch-action: none;
  cursor: crosshair;
}

.signature-pad.is-empty {
  background-image:
    linear-gradient(to right, rgba(83, 93, 108, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(83, 93, 108, 0.08) 1px, transparent 1px);
  background-size: 28px 28px;
}

.signature-clear-button {
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 600;
}

.signature-status {
  font-size: 0.8rem;
}

.section-note {
  color: var(--ink-soft);
  font-size: 0.82rem;
}

h3 {
  margin-top: 6px;
}

.acknowledgements {
  border: 1px solid rgba(72, 80, 88, 0.24);
  border-radius: 12px;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.acknowledgements legend {
  font-weight: 700;
  color: var(--ink);
  padding: 0 4px;
}

.acknowledgements label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--ink);
  line-height: 1.35;
  font-size: 0.9rem;
}

.acknowledgements input {
  margin-top: 3px;
  accent-color: var(--accent);
}

button {
  background: linear-gradient(120deg, var(--accent), #c56a43);
  color: #fff;
  border: 0;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.01em;
  font-size: 0.96rem;
  padding: 12px 20px;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  background: linear-gradient(120deg, var(--accent), #c56a43);
  color: #fff;
  border: 0;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.01em;
  font-size: 0.96rem;
  padding: 12px 20px;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.2s ease;
}

.button-link:hover {
  transform: translateY(-1px);
}

button.secondary-action,
.button-link.secondary {
  background: rgba(255, 255, 255, 0.75);
  color: var(--ink);
  border: 1px solid rgba(61, 68, 76, 0.28);
}

.form-message {
  min-height: 20px;
  font-size: 0.87rem;
}

.form-message.is-error {
  color: var(--error);
}

.form-message.is-success {
  color: var(--ok);
}

.success-shell {
  max-width: 900px;
  margin: 20px auto;
  padding: 28px;
  display: grid;
  gap: 18px;
}

.summary-block {
  border: 1px solid rgba(61, 68, 76, 0.2);
  border-radius: 14px;
  padding: 16px;
  display: grid;
  gap: 12px;
}

.summary-list {
  margin: 0;
  display: grid;
  gap: 8px;
}

.summary-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 8px;
  font-size: 0.92rem;
}

.summary-row dt {
  color: var(--ink-soft);
  font-weight: 600;
}

.summary-row dd {
  margin: 0;
  color: var(--ink);
}

.email-status-wrap {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.success-actions {
  display: flex;
  justify-content: flex-start;
  gap: 10px;
  flex-wrap: wrap;
}

.submissions-shell {
  max-width: 1320px;
  margin: 20px auto;
  padding: 24px;
  display: grid;
  gap: 14px;
}

.submissions-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.submissions-controls {
  display: grid;
  grid-template-columns: minmax(300px, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.search-input-wrap {
  max-width: 760px;
}

.submissions-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.submissions-meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.sheets-formula-hint {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  overflow-wrap: anywhere;
}

.submissions-table-wrap {
  border: 1px solid rgba(61, 68, 76, 0.2);
  border-radius: 14px;
  overflow: auto;
  background: rgba(255, 255, 255, 0.82);
}

.submissions-table {
  width: 100%;
  min-width: 1100px;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.submissions-table th,
.submissions-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(61, 68, 76, 0.16);
  vertical-align: top;
}

.submissions-table thead th {
  font-family: 'Source Serif 4', serif;
  letter-spacing: 0.01em;
  font-size: 0.92rem;
  background: rgba(244, 238, 223, 0.95);
}

.submissions-table tbody tr:hover {
  background: rgba(220, 233, 245, 0.38);
}

@media (max-width: 1024px) {
  body {
    padding: 14px;
  }

  .app-shell {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .viewer-panel {
    order: 2;
    min-height: auto;
  }

  .form-panel {
    order: 1;
  }

  #waiverFrame {
    height: 52vh;
  }

  .pdf-frame-wrap {
    min-height: 50vh;
  }

  .summary-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .submissions-controls {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    padding: 10px;
  }

  .field-grid.two {
    grid-template-columns: 1fr;
  }

  .viewer-panel,
  .form-panel,
  .success-shell,
  .submissions-shell {
    padding: 16px;
  }

  form {
    gap: 12px;
  }

  label {
    font-size: 0.94rem;
  }

  input,
  textarea {
    font-size: 16px;
    padding: 12px 12px;
  }

  .acknowledgements {
    padding: 12px;
    gap: 12px;
  }

  .acknowledgements label {
    font-size: 0.95rem;
    gap: 10px;
  }

  .acknowledgements input {
    width: 18px;
    height: 18px;
    margin-top: 1px;
    flex-shrink: 0;
  }

  #submitButton {
    width: 100%;
    min-height: 48px;
  }

  #waiverFrame {
    height: 44vh;
  }

  .pdf-frame-wrap {
    min-height: 42vh;
  }
}