/* Layout */
.calc-container { max-width: 760px; margin: 2rem auto; padding: 1rem; }
.calc-title { color: #5e3bea; text-align: center; margin-bottom: .25rem; }
.calc-subtitle { text-align: center; color: #5b5b6a; margin-bottom: 1.25rem; }

/* Card */
.calc-card {
  background: #f9f9ff;
  padding: 1.75rem;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(30, 17, 77, 0.06);
  border: 1px solid #ececff;
}

/* Sections */
.section-title {
  color: #5e3bea;
  font-size: 1.05rem;
  margin: 1.25rem 0 .5rem;
  padding-top: .5rem;
  border-top: 1px dashed #e6e6fb;
}

/* Form */
.form-group { margin-bottom: .9rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-control, select, input[type="number"], input[type="text"] {
  width: 100%;
  padding: .6rem .7rem;
  border: 1px solid #dad9f7;
  border-radius: 10px;
  background: #fff;
  font-size: .98rem;
  transition: border-color .2s, box-shadow .2s, background-color .2s;
}
.form-control:focus, select:focus, input:focus {
  outline: none;
  border-color: #7a62ff;
  box-shadow: 0 0 0 3px rgba(122,98,255,0.12);
  background-color: #fff;
}

/* Checklists */
.checklist { display: grid; gap: .5rem; margin: .5rem 0 1rem; }
.checklist.columns { grid-template-columns: 1fr; }
@media (min-width: 720px) {
  .checklist.columns { grid-template-columns: 1fr 1fr; }
}
.checklist label {
  background: #ffffff;
  border: 1px solid #eae9ff;
  border-radius: 10px;
  padding: .55rem .65rem;
  display: flex; gap: .5rem; align-items: center;
}
.checklist input[type="checkbox"] { transform: scale(1.1); }

/* Button */
.actions { text-align: center; margin-top: 1rem; }
.btn-primary {
  padding: .8rem 1.6rem;
  background: linear-gradient(135deg, #ff7a7a, #ff5c5c);
  color: #fff; border: none; border-radius: 999px;
  font-size: 1rem; cursor: pointer; font-weight: 600;
  box-shadow: 0 10px 20px rgba(255,92,92,0.25);
  transition: transform .07s ease, box-shadow .2s ease, filter .2s ease;
}
.btn-primary:hover { box-shadow: 0 12px 24px rgba(255,92,92,0.35); filter: brightness(1.02); }
.btn-primary:active { transform: translateY(1px); }