/* ================================================================
   styles.css — estilos compartidos para crear y firmar
   ================================================================ */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  overflow-x: hidden;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f5f7fb;
  color: #1f2937;
}

.page {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 8px;
}

.card {
  width: 100%;
  max-width: 540px;
  margin: 0 auto;
  background: #fff;
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
}

h1 {
  margin: 0 0 6px;
  font-size: 24px;
  line-height: 1.15;
  color: #111827;
}

h1 i { margin-right: 8px; color: #2563eb; }
h1.firma i { color: #16a34a; }

p {
  margin: 0 0 14px;
  color: #6b7280;
  line-height: 1.45;
  font-size: 15px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.field { margin-bottom: 0; }

.field label {
  display: block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #374151;
}

.field label i {
  margin-right: 5px;
  color: #9ca3af;
  width: 16px;
  text-align: center;
}

.hint {
  margin-top: 6px;
  font-size: 12px;
  color: #6b7280;
}

input,
textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  font-size: 16px;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #fff;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
textarea:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.section { margin-top: 18px; }

.section-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
  color: #111827;
}

.section-title i { margin-right: 6px; color: #9ca3af; }

.items-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 10px;
}

.item-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
}

.item-row input { flex: 1; min-width: 0; }

.btn-delete {
  width: 46px;
  height: 46px;
  min-width: 46px;
  border: none;
  border-radius: 12px;
  padding: 0;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-delete:active { background: #fee2e2; }

.actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

button {
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
}

button:active { opacity: 0.85; }
button i { margin-right: 8px; }

.btn-primary  { background: #2563eb; color: #fff; }
.btn-success  { background: #16a34a; color: #fff; }
.btn-secondary{ background: #f3f4f6; color: #111827; border: 1px solid #e5e7eb; }
.btn-whatsapp { background: #25d366; color: #fff; }
.btn-share    { background: #8b5cf6; color: #fff; }
.btn-add {
  background: #f0f9ff;
  color: #2563eb;
  border: 1px dashed #93c5fd;
}
.btn-add:active { background: #e0f2fe; }

.result {
  margin-top: 16px;
  padding: 14px;
  background: #f0f9ff;
  border: 1px solid #93c5fd;
  border-radius: 12px;
  display: none;
  font-size: 14px;
  line-height: 1.5;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.result a {
  word-break: break-all;
  overflow-wrap: anywhere;
  color: #2563eb;
}

.small-note {
  display: none;
  margin-top: 10px;
  padding: 10px 12px;
  font-size: 13px;
  color: #166534;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 10px;
}

.small-note i { margin-right: 6px; }

.footer-note {
  margin-top: 18px;
  text-align: center;
  font-size: 12px;
  color: #6b7280;
  line-height: 1.4;
}

.footer-note a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
}

.loading { opacity: 0.7; pointer-events: none; }

/* ===== Firma (canvas y específicos) ===== */
.box {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 14px;
}

.box-title {
  font-size: 13px;
  font-weight: 700;
  color: #9ca3af;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.box-title i { margin-right: 5px; }

.meta-line {
  margin: 2px 0;
  font-size: 16px;
  line-height: 1.35;
  word-break: break-word;
}

.meta-line i {
  margin-right: 6px;
  color: #9ca3af;
  width: 16px;
  text-align: center;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  margin-bottom: 8px;
  cursor: pointer;
  user-select: none;
}

.check-item input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.custom-check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 2px solid #d1d5db;
  border-radius: 6px;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
}

.check-item input[type="checkbox"]:checked + .custom-check {
  background: #16a34a;
  border-color: #16a34a;
}

.check-item input[type="checkbox"]:checked + .custom-check::after {
  content: '✓';
  color: #fff;
  font-weight: 700;
  font-size: 14px;
}

.check-text {
  font-size: 15px;
  line-height: 1.4;
  flex: 1;
}

.canvas-wrap {
  background: #fff;
  border: 2px dashed #d1d5db;
  border-radius: 12px;
  margin-top: 8px;
  position: relative;
  touch-action: none;
}

#firmaCanvas {
  width: 100%;
  height: 200px;
  display: block;
  border-radius: 10px;
  cursor: crosshair;
}

.canvas-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.canvas-actions button { flex: 1; }

.msg {
  margin-top: 14px;
  padding: 12px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.4;
}

.msg.success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.msg.error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.msg i { margin-right: 6px; }

@media (min-width: 768px) {
  .page { padding: 30px 20px; }
  .card { max-width: 640px; padding: 28px; }
  .grid.two { grid-template-columns: 1fr 1fr; }
  .actions.inline { flex-direction: row; flex-wrap: wrap; }
  .actions.inline button { width: auto; }
}