:root {
  --date-success: #15803d;
  --date-success-soft: #ecfdf3;
  --date-warning: #a16207;
  --date-warning-soft: #fffbeb;
  --date-danger: #b42318;
  --date-danger-soft: #fff0ee;
}

body {
  padding-bottom: 50px;
}

.date-page-shell {
  width: min(1000px, calc(100% - 32px));
  margin: 0 auto;
}

.date-page-header {
  padding: 34px 0 24px;
}

.date-page-header h1 {
  margin: 0 0 10px;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.06;
  letter-spacing: -.035em;
}

.date-main {
  display: grid;
  gap: 20px;
  padding-bottom: 40px;
}

.date-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.date-card-header {
  margin-bottom: 22px;
}

.date-card-header h2 {
  margin: 0 0 6px;
  font-size: 22px;
  letter-spacing: -.02em;
}

.date-card-header p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.date-field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 800;
}

.date-input {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--text);
  outline: none;
  font-size: 16px;
}

.date-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15,118,110,.12);
}

.elapsed-box,
.between-result {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  padding: 15px 16px;
  border-radius: 12px;
  background: var(--surface-soft);
}

.elapsed-label,
.between-result span {
  color: var(--muted);
  font-size: 14px;
}

#elapsedValue,
#betweenValue {
  font-size: 19px;
}

.recipe-status-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.recipe-status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 48px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  font-size: 15px;
  font-weight: 700;
}

.recipe-status-row strong {
  text-align: right;
}

.status-valid {
  color: var(--date-success);
}

.status-ending {
  color: var(--date-warning);
}

.status-invalid {
  color: var(--date-danger);
}

.date-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.date-calculate-button {
  width: 100%;
  min-height: 48px;
  margin-top: 18px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  transition: .18s ease;
}

.date-calculate-button:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.date-calculate-button:active {
  transform: translateY(0);
}

@media (max-width: 640px) {
  .date-page-shell {
    width: min(100% - 20px, 620px);
  }

  .date-page-header {
    padding-top: 25px;
  }

  .date-card {
    padding: 18px;
  }

  .date-fields-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .recipe-status-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .recipe-status-row strong {
    text-align: left;
  }

  .elapsed-box,
  .between-result {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }
}