/* Pregnancy Due Date Calculator */

/* ---- Calculator Form ---- */
.calc-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.calc-form .input-group {
  margin-bottom: 16px;
}

.calc-form label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text);
  margin-bottom: 6px;
}

.calc-form select,
.calc-form input[type="date"],
.calc-form input[type="number"] {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  width: 100%;
  max-width: 360px;
  background: var(--color-surface);
  color: var(--color-text);
  box-sizing: border-box;
}

.calc-form .input-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.calc-form .input-row input[type="number"] {
  width: 80px;
}

.calc-form .unit-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 600;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover { opacity: 0.9; }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: var(--color-bg-secondary);
}

.btn-danger {
  background: var(--color-surface);
  color: #e53e3e;
  border-color: #e53e3e;
}

.btn-danger:hover {
  background: #e53e3e;
  color: #fff;
}

/* ---- Due Date Hero ---- */
.due-date-hero {
  text-align: center;
  padding: 32px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.due-date-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  font-weight: 600;
}

.due-date-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

/* ---- Stats Row ---- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
}

/* ---- Progress Bar ---- */
.progress-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 24px;
}

.progress-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.progress-bar {
  height: 14px;
  background: var(--color-bg-secondary);
  border-radius: 7px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 7px;
  transition: width 0.5s ease;
}

.progress-trimesters {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ---- Milestones ---- */
.milestones-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 24px;
}

.milestones-section h3 {
  font-size: 1rem;
  margin-bottom: 16px;
}

.milestone-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.milestone-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.9rem;
}

.milestone-item:last-child {
  border-bottom: none;
}

.milestone-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
  color: transparent;
}

.milestone-item.past .milestone-check {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.milestone-name {
  flex: 1;
  font-weight: 600;
  color: var(--color-text);
}

.milestone-item.past .milestone-name {
  color: var(--color-text-muted);
}

.milestone-date {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.milestone-week {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  min-width: 50px;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .stats-row {
    grid-template-columns: 1fr;
  }
  .due-date-value {
    font-size: 1.6rem;
  }
}

/* ---- Print ---- */
@media print {
  .calc-form,
  .ad-zone {
    display: none !important;
  }
  .results-section {
    break-inside: avoid;
  }
}