.date-calculator-wrapper{max-width:100%}.mode-selector{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}.mode-btn{padding:.75rem 1.5rem;border:2px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary);border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.mode-btn.active{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.mode-btn:hover{border-color:var(--accent-primary);transform:translateY(-2px)}.mode-content{display:none}.mode-content.active{display:block}.input-section{background:var(--bg-tool);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:2rem;margin-bottom:2rem}.input-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:1.5rem}.input-group{display:flex;flex-direction:column;gap:.5rem}.input-group label{font-weight:600;color:var(--text-primary);font-size:.95rem}.date-input,.amount-input,.time-unit-select{padding:.75rem 1rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-size:1rem;transition:all .2s ease}.date-input:focus,.amount-input:focus,.time-unit-select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #6c3ce11a}.presets{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin-bottom:1.5rem}.preset-btn{padding:.6rem 1rem;background:var(--bg-secondary);color:var(--accent-secondary);border:1px solid var(--accent-secondary);border-radius:var(--radius-sm);font-weight:600;cursor:pointer;transition:all .2s ease;font-size:.9rem}.preset-btn:hover{background:var(--accent-secondary);color:#fff}.operation-group{background:var(--bg-secondary);padding:1.5rem;border-radius:var(--radius-sm);margin-bottom:1.5rem}.operation-selector{display:flex;gap:.5rem;margin-bottom:1rem}.op-btn{flex:1;padding:.75rem;border:2px solid var(--border-color);background:var(--bg-tool);color:var(--text-primary);border-radius:var(--radius-sm);font-weight:600;cursor:pointer;transition:all .2s ease}.op-btn.active{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.amount-group{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.button-group{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1.5rem}.btn-primary,.btn-copy{padding:.75rem 1.5rem;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-primary{background:var(--accent-primary);color:#fff}.btn-primary:hover{opacity:.9;transform:translateY(-2px)}.checkbox-group{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border-color)}.checkbox-label{display:flex;align-items:center;gap:.75rem;cursor:pointer;color:var(--text-primary);font-weight:500}.checkbox{width:18px;height:18px;cursor:pointer;accent-color:var(--accent-primary)}.results-container{display:flex;flex-direction:column;gap:2rem}.results-container.hidden{display:none}.main-results{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1.5rem}.result-card{background:var(--bg-tool);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:1.5rem;display:flex;flex-direction:column;align-items:center;gap:.5rem;text-align:center}.result-card.highlight{background:linear-gradient(135deg,var(--accent-primary) 0%,#8b5cf6 100%);border:none;color:#fff}.result-label{font-size:.9rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-weight:500}.result-card.highlight .result-label{color:#ffffffe6}.result-value{font-size:2rem;font-weight:700;color:var(--accent-primary)}.result-card.highlight .result-value{color:#fff}.breakdown-section,.info-section,.fun-facts-section{background:var(--bg-tool);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:2rem}.breakdown-section h3,.info-section h3,.fun-facts-section h3{margin:0 0 1.5rem;font-size:1.3rem;color:var(--text-primary)}.breakdown-grid,.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1.5rem}.breakdown-item,.info-item{display:flex;flex-direction:column;gap:.5rem;padding:1rem;background:var(--bg-secondary);border-radius:var(--radius-sm)}.breakdown-item{border-left:3px solid var(--accent-secondary)}.breakdown-label,.info-label{font-size:.85rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-weight:500}.breakdown-value,.info-value{font-size:1.5rem;font-weight:700;color:var(--accent-secondary)}.fun-facts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.fun-fact{display:flex;gap:1rem;padding:1.5rem;background:var(--bg-secondary);border-radius:var(--radius-sm);align-items:flex-start}.fact-icon{font-size:2rem;flex-shrink:0}.fact-text{color:var(--text-primary);line-height:1.5;font-size:.95rem}.share-section{display:flex;justify-content:center;position:relative}.btn-copy{background:var(--accent-secondary);color:#fff;display:flex;align-items:center;gap:.5rem;padding:1rem 2rem;font-size:1.1rem}.btn-copy:hover{opacity:.9}.copy-icon{font-size:1.3rem}.copy-feedback{position:absolute;top:-2.5rem;background:var(--accent-success);color:#fff;padding:.5rem 1rem;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;white-space:nowrap}.copy-feedback.hidden{display:none}.empty-state{text-align:center;padding:4rem 2rem;background:var(--bg-tool);border:1px dashed var(--border-color);border-radius:var(--radius-md)}.empty-icon{font-size:3rem;margin-bottom:1rem}.empty-text{color:var(--text-secondary);font-size:1.1rem}@media(max-width:768px){.input-section{padding:1.5rem}.button-group{flex-direction:column}.btn-primary,.btn-copy{width:100%}.presets{grid-template-columns:repeat(2,1fr)}.amount-group{grid-template-columns:1fr}.mode-selector{flex-direction:column}.mode-btn{width:100%}.operation-selector{flex-direction:column}.op-btn{width:100%}}