:root{--duration-primary:#3b82f6;--duration-primary-dark:#2563eb;--duration-success:#10b981;--duration-warning:#f59e0b;--duration-danger:#ef4444}.tool-header{text-align:center;margin-bottom:40px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #667eea, #764ba2);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.tool-header h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg, #1e293b, #3b82f6);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.quick-stats{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:32px}.stat-card{background:white;border-radius:24px;padding:20px;display:flex;align-items:center;gap:16px;border:1px solid var(--gray-200);transition:all 0.3s}.stat-card:hover{transform:translateY(-3px);box-shadow:0 10px 25px -10px rgba(0,0,0,0.1)}.stat-icon{width:52px;height:52px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:18px;display:flex;align-items:center;justify-content:center;color:var(--duration-primary);font-size:1.3rem}.stat-info{flex:1}.stat-value{display:block;font-size:1.6rem;font-weight:700;color:var(--gray-800);line-height:1.2}.stat-label{font-size:0.7rem;color:var(--gray-500)}.mode-tabs{display:flex;gap:16px;margin-bottom:32px;justify-content:center}.mode-tab{background:transparent;border:none;padding:14px 28px;cursor:pointer;transition:all 0.3s;border-radius:20px;text-align:center;min-width:160px}.mode-tab i{font-size:1.3rem;color:var(--gray-400);margin-bottom:8px;display:block}.mode-tab span{display:block;font-weight:600;color:var(--gray-600);margin-bottom:4px}.mode-tab small{font-size:0.65rem;color:var(--gray-400)}.mode-tab.active{background:linear-gradient(135deg, var(--duration-primary), var(--duration-primary-dark));box-shadow:0 8px 25px rgba(59,130,246,0.3)}.mode-tab.active i,.mode-tab.active span,.mode-tab.active small{color:white}.time-input-group{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:center;margin-bottom:32px}.time-card{background:var(--gray-50);border-radius:24px;padding:20px}.card-header{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-weight:600;color:var(--gray-700)}.now-btn,.mini-btn{margin-left:auto;background:transparent;border:1px solid var(--gray-300);padding:4px 12px;border-radius:30px;font-size:0.7rem;cursor:pointer;transition:all 0.2s}.now-btn:hover,.mini-btn:hover{background:var(--duration-primary);border-color:var(--duration-primary);color:white}.datetime-wrapper{position:relative}.datetime-input{width:100%;padding:14px 16px;border:1px solid var(--gray-300);border-radius:16px;font-size:0.9rem;background:white;cursor:pointer}.datetime-input:focus{outline:none;border-color:var(--duration-primary);box-shadow:0 0 0 3px rgba(59,130,246,0.1)}.time-arrow{display:flex;justify-content:center;font-size:2rem;color:var(--duration-primary)}.duration-result{background:linear-gradient(135deg, #f8fafc, #fff);border-radius:24px;padding:24px;border:1px solid var(--gray-200)}.result-banner{display:flex;align-items:center;gap:20px;padding-bottom:20px;border-bottom:1px solid var(--gray-200);margin-bottom:20px}.result-icon{width:60px;height:60px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:var(--duration-primary)}.result-text{flex:1}.result-label{display:block;font-size:0.8rem;color:var(--gray-500);margin-bottom:6px}.result-value{display:block;font-size:1.4rem;font-weight:700;color:var(--duration-primary)}.result-details{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px}.detail-row{text-align:center;padding:12px;background:white;border-radius:16px;border:1px solid var(--gray-200)}.detail-label{display:block;font-size:0.7rem;color:var(--gray-500);margin-bottom:6px}.detail-value{display:block;font-size:1.2rem;font-weight:700;color:var(--gray-800)}.converter-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:24px}.converter-card{background:var(--gray-50);border-radius:24px;padding:24px}.converter-input{display:flex;gap:12px;margin:16px 0}.number-input{flex:1;padding:14px;border:1px solid var(--gray-300);border-radius:16px;font-size:1rem}.convert-btn{background:linear-gradient(135deg, var(--duration-primary), var(--duration-primary-dark));border:none;padding:12px 24px;border-radius:50px;color:white;font-weight:500;cursor:pointer;transition:all 0.3s}.convert-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(59,130,246,0.3)}.converter-result{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px;margin-top:20px;text-align:center}.result-item{background:white;padding:16px;border-radius:16px}.result-item span{display:block;font-size:0.7rem;color:var(--gray-500);margin-bottom:8px}.result-item strong{font-size:1.3rem;font-weight:700;color:var(--duration-primary)}.converter-input-group{margin:16px 0}.time-input-row{display:flex;align-items:center;gap:12px;margin-bottom:12px;padding:8px;background:white;border-radius:12px}.time-input-row label{width:50px;font-weight:500}.small-input{flex:1;padding:10px;border:1px solid var(--gray-300);border-radius:12px;text-align:center}.converter-result-large{margin-top:20px;padding:20px;background:white;border-radius:16px;text-align:center}.converter-result-large .result-label{font-size:0.8rem;margin-bottom:8px}.converter-result-large strong{font-size:1.8rem;font-weight:700;color:var(--duration-primary)}.calculator-wrapper{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px}.calculator-card{background:var(--gray-50);border-radius:24px;padding:20px}.adjust-group{margin:16px 0}.adjust-row{display:flex;align-items:center;gap:12px;margin-bottom:12px;padding:8px;background:white;border-radius:12px}.adjust-row label{width:50px;font-weight:500}.adjust-input{flex:1;padding:10px;border:1px solid var(--gray-300);border-radius:12px;text-align:center}.adjust-btn{background:var(--gray-100);border:1px solid var(--gray-300);width:32px;height:32px;border-radius:8px;cursor:pointer;transition:all 0.2s;display:inline-flex;align-items:center;justify-content:center}.adjust-btn:hover{background:var(--duration-primary);border-color:var(--duration-primary);color:white}.calc-result{margin-top:16px}.result-row{padding:12px;border-bottom:1px solid var(--gray-200);display:flex;justify-content:space-between;align-items:center}.result-row:last-child{border-bottom:none}.result-label{font-size:0.8rem;color:var(--gray-500)}.result-value{font-weight:600;color:var(--gray-800)}.result-value.highlight{color:var(--duration-primary);font-size:1.1rem}.reference-section{margin-top:32px}.ref-grid{display:grid;grid-template-columns:repeat(3, 1fr);gap:12px;margin-top:16px}.ref-item{background:var(--gray-50);padding:12px 16px;border-radius:12px;font-size:0.8rem;color:var(--gray-600);text-align:center}@media (max-width:1024px){.quick-stats{grid-template-columns:repeat(2, 1fr)}.result-details{grid-template-columns:repeat(2, 1fr)}.converter-wrapper{grid-template-columns:1fr}.calculator-wrapper{grid-template-columns:1fr}}@media (max-width:768px){.time-input-group{grid-template-columns:1fr}.time-arrow{transform:rotate(90deg)}.quick-stats{grid-template-columns:1fr}.mode-tab{min-width:auto;padding:10px 16px}.ref-grid{grid-template-columns:1fr}}