/* ═══════════════════════════════════════════
   DATE DIFFERENCE — Glassmorphism
   ═══════════════════════════════════════════ */
.dd-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem;
  margin-bottom: 1.5rem; align-items: start;
}
.dd-col { display: flex; flex-direction: column; gap: 0.75rem; }
.dd-input-group { display: flex; flex-direction: column; gap: 0.5rem; }
.dd-input-label {
  display: block; font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-tertiary); margin-bottom: 0.4rem;
}
.dd-input {
  width: 100%; padding: 0.65rem 0.85rem; border: 1.5px solid var(--t-border);
  border-radius: var(--t-radius-sm); background: var(--bg, #fff);
  color: var(--text); font-family: var(--t-font); font-size: 0.9rem;
  outline: none; transition: all 0.25s; box-sizing: border-box;
}
.dd-input:focus {
  border-color: var(--t-accent);
  box-shadow:  0 0 0 3px var(--primary-soft);
}
.dd-options-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.dd-toggle-label {
  display: flex; align-items: center; gap: 0.5rem;
  cursor: pointer; user-select: none;
}
.dd-toggle-label input[type="checkbox"] {
  width: 1.05rem; height: 1.05rem; accent-color: var(--t-accent); cursor: pointer;
}
.dd-toggle-text { font-size: 0.82rem; font-weight: 500; color: var(--text-secondary); }
.dd-actions-row { display: flex; gap: 0.5rem; }
.dd-action-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.75rem 1.6rem; border: 1.5px solid var(--t-border); border-radius: 100px;
  background: var(--t-bg); color: var(--text-secondary);
  font-family: var(--t-font); font-size: 0.88rem; font-weight: 700;
  cursor: pointer; transition: all 0.25s cubic-bezier(0.16,1,0.3,1); white-space: nowrap;
}
.dd-action-btn:hover:not(:disabled) {
  border-color: var(--t-accent); color: var(--t-accent);
  background: var(--t-accent-light); transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.dd-action-btn.primary {
  flex: 1; background: var(--primary);
  color: #fff; border-color: transparent; box-shadow: var(--shadow-md);
}
.dd-action-btn.secondary { background: var(--t-bg); border: 1px solid var(--border); color: var(--text); }
.dd-results-panel {
  display: none; animation: ddSlideIn 0.35s cubic-bezier(0.16,1,0.3,1);
}
.dd-results-panel.show { display: block; }
@keyframes ddSlideIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }
.dd-top-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.dd-top-card {
  text-align: center; padding: 1.25rem 0.75rem;
  border-radius: var(--t-radius); background: var(--t-bg-card);
  border: 1px solid var(--border);

  transition: transform 0.3s cubic-bezier(0.16,1,0.3,1), box-shadow 0.3s;
}
.dd-top-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.dd-top-card .result-value {
  font-size: 2.2rem; font-weight: 800; color: var(--t-accent);
  letter-spacing: -0.03em; line-height: 1.1;
}
.dd-top-card .result-label {
  font-size: 0.72rem; color: var(--text-tertiary); margin-top: 4px;
  font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
}
.dd-breakdown {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem;
}
.dd-info-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 1rem; border: 1px solid var(--border);
  border-radius: var(--t-radius-sm); background: var(--t-bg);

  transition: all 0.25s cubic-bezier(0.16,1,0.3,1);
  position: relative; overflow: hidden; min-height: 50px;
}
.dd-info-item::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--primary);
  border-radius: 0 2px 2px 0; opacity: 0.5; transition: opacity 0.3s, width 0.3s;
}
.dd-info-item:hover {
  border-color: var(--t-accent); box-shadow: var(--shadow-md);
  transform: translateX(3px);
}
.dd-info-item:hover::before { opacity: 1; width: 4px; }
.dd-info-label {
  font-size: 0.78rem; font-weight: 500; color: var(--text-secondary);
  white-space: nowrap; flex-shrink: 0; position: relative; z-index: 1;
}
.dd-info-value {
  font-size: 1.05rem; font-weight: 700; color: var(--t-accent);
  margin-left: auto; text-align: right; white-space: nowrap;
  flex-shrink: 0; position: relative; z-index: 1;
}
.dd-info-item:nth-child(even) .dd-info-value { color: var(--primary-hover); }
@media (max-width: 768px) {
  .dd-layout { grid-template-columns: 1fr; gap: 1rem; }
  .dd-top-grid { grid-template-columns: repeat(3, 1fr); }
  .dd-breakdown { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .dd-top-card .result-value { font-size: 1.6rem; }
  .dd-actions-row { flex-direction: column; }
  .dd-options-row { flex-direction: column; gap: 0.5rem; }
}