:root {
  --teal: #0d4f4f;
  --teal-dark: #093a3a;
  --bg: #f4f6f6;
  --text: #1d2424;
  --muted: #5c6a6a;
  --border: #cdd6d6;
  --error: #b3261e;
  --white: #ffffff;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

/* Header */
.site-header {
  position: relative;
  background: var(--teal);
  color: var(--white);
  padding: 20px 20px 18px;
  text-align: center;
}
.site-header h1 { margin: 0; font-size: 1.5rem; letter-spacing: 2px; }
.site-header .subtitle { margin: 4px 0 0; font-size: 0.95rem; opacity: 0.9; }

/* Back-to-home arrow */
.home-link {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  color: var(--white); text-decoration: none; font-size: 1.5rem; line-height: 1;
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
}
.home-link:active { background: rgba(255,255,255,.15); }

/* Content */
.content {
  max-width: 640px; margin: 0 auto; padding: 20px 18px 48px;
}

.release-text p { margin: 0 0 14px; font-size: 0.95rem; color: var(--text); }

/* Form fields */
.field-label {
  display: block; font-weight: 600; font-size: 0.95rem;
  margin: 18px 0 6px; color: var(--teal-dark);
}
.field-label-row {
  display: flex; align-items: center; justify-content: space-between; margin: 18px 0 6px;
}
.field-label-row .field-label { margin: 0; }

input[type="text"] {
  width: 100%; padding: 13px 14px; font-size: 1rem;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--white); color: var(--text);
}
input[type="text"]:focus {
  outline: none; border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(13, 79, 79, 0.15);
}

/* Signature pad */
.signature-wrap {
  position: relative; width: 100%; height: 180px;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--white); overflow: hidden;
  touch-action: none; /* let the canvas capture finger drawing */
}
.signature-canvas { width: 100%; height: 100%; display: block; }

.clear-btn {
  background: transparent; border: 1px solid var(--border); color: var(--teal-dark);
  padding: 6px 14px; font-size: 0.85rem; border-radius: 6px; cursor: pointer;
}
.clear-btn:active { background: #e8eded; }

/* Guardian section */
.guardian-section {
  margin-top: 24px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--white); padding: 4px 14px 14px;
}
.guardian-section summary {
  cursor: pointer; font-weight: 600; color: var(--teal-dark);
  padding: 12px 0; list-style-position: inside;
}

/* Submit + actions */
.submit-btn {
  display: block; width: 100%; margin-top: 26px; padding: 16px;
  font-size: 1.05rem; font-weight: 600; color: var(--white);
  background: var(--teal); border: none; border-radius: 8px; cursor: pointer;
}
.submit-btn:active { background: var(--teal-dark); }
.submit-btn:disabled { opacity: 0.6; cursor: default; }
a.submit-btn { text-align: center; text-decoration: none; }

/* Secondary action on the confirmation screen */
.secondary-btn {
  background: transparent; color: var(--teal); border: 1px solid var(--teal); margin-top: 12px;
}
.secondary-btn:active { background: #e8eded; }

/* Errors */
.error-message {
  margin: 18px 0 0; padding: 12px 14px;
  background: #fbe9e7; border: 1px solid var(--error); border-radius: 8px;
  color: var(--error); font-size: 0.95rem;
}

/* Confirmation screen */
.confirmation { text-align: center; padding-top: 48px; }
.check-circle {
  width: 72px; height: 72px; margin: 0 auto 20px; border-radius: 50%;
  background: var(--teal); color: var(--white); font-size: 2.2rem; line-height: 72px;
}
.confirmation h2 { font-size: 1.3rem; color: var(--teal-dark); margin: 0 0 10px; }
.confirm-detail { color: var(--muted); font-size: 0.9rem; margin: 0 0 8px; word-break: break-word; }