.days-lived-counter-container,.days-lived-counter-container *,.days-lived-counter-container *::before,.days-lived-counter-container *::after{box-sizing:border-box}.days-lived-counter-container{--bg-primary:#f5f5f0;--bg-secondary:#fff;--bg-section:#fff;--border-color:#333;--text-primary:#222;--text-secondary:#555;--text-light:#666;--color-accent:#3498db;--color-success:#27ae60;--color-warning:#f39c12;--color-danger:#e74c3c;--color-purple:#9b59b6;--color-teal:#1abc9c;--shadow-sm:2px 2px 0 rgba(0,0,0,0.1);--shadow-md:4px 4px 0 rgba(0,0,0,0.15);--shadow-lg:8px 8px 0 rgba(0,0,0,0.15);--input-focus-bg:#fffacd;--title-color:#2c3e50;--title-shadow:2px 2px 0 rgba(255,255,255,0.5);--btn-hover-overlay:rgba(0,0,0,0.1);--copy-btn-bg:#fff;--copy-btn-hover-bg:#f0f0f0}.days-lived-counter-container.dark{--bg-primary:#1a1a1a;--bg-secondary:#2d2d2d;--bg-section:#2d2d2d;--border-color:#e0e0e0;--text-primary:#e8e8e8;--text-secondary:#b0b0b0;--text-light:#909090;--color-accent:#5dade2;--color-success:#52c77a;--color-warning:#f5b041;--color-danger:#ec7063;--color-purple:#af7ac5;--color-teal:#48d1cc;--shadow-sm:2px 2px 0 rgba(255,255,255,0.08);--shadow-md:4px 4px 0 rgba(255,255,255,0.12);--shadow-lg:8px 8px 0 rgba(255,255,255,0.12);--input-focus-bg:#3a3a3a;--title-color:#7fb3d5;--title-shadow:2px 2px 0 rgba(0,0,0,0.5);--btn-hover-overlay:rgba(255,255,255,0.1);--copy-btn-bg:#3a3a3a;--copy-btn-hover-bg:#4a4a4a}@media (prefers-color-scheme:dark){.days-lived-counter-container:not(.dark):not(.light){--bg-primary:#1a1a1a;--bg-secondary:#2d2d2d;--bg-section:#2d2d2d;--border-color:#e0e0e0;--text-primary:#e8e8e8;--text-secondary:#b0b0b0;--text-light:#909090;--color-accent:#5dade2;--color-success:#52c77a;--color-warning:#f5b041;--color-danger:#ec7063;--color-purple:#af7ac5;--color-teal:#48d1cc;--shadow-sm:2px 2px 0 rgba(255,255,255,0.08);--shadow-md:4px 4px 0 rgba(255,255,255,0.12);--shadow-lg:8px 8px 0 rgba(255,255,255,0.12);--input-focus-bg:#3a3a3a;--title-color:#7fb3d5;--title-shadow:2px 2px 0 rgba(0,0,0,0.5);--btn-hover-overlay:rgba(255,255,255,0.1);--copy-btn-bg:#3a3a3a;--copy-btn-hover-bg:#4a4a4a}}.days-lived-counter-container{position:relative;max-width:1180px;width:100%;margin:15px auto;padding:12px;background:var(--bg-primary);border:2px solid var(--border-color);font-family:'Noto Sans KR','Malgun Gothic',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--text-primary);box-shadow:var(--shadow-lg);line-height:1.5}.dark-mode-toggle{position:absolute;top:12px;right:12px;padding:8px 12px;background:var(--bg-secondary);border:1px solid var(--border-color);cursor:pointer;transition:all 0.2s;box-shadow:var(--shadow-sm);font-size:18px;color:var(--text-primary);z-index:10}.dark-mode-toggle:hover{transform:translate(.5px,.5px);box-shadow:1.5px 1.5px 0 rgba(0,0,0,.15)}.dark-mode-toggle:active{transform:translate(2px,2px);box-shadow:none}.calculator-header{text-align:center;margin-bottom:12px;padding-bottom:10px;border-bottom:3px double var(--border-color)}.calculator-header h2{margin:0 0 6px 0;font-size:30px;font-weight:700;color:var(--title-color);text-shadow:var(--title-shadow);line-height:1.2}.subtitle{margin:0 0 8px 0;font-size:17px;color:var(--text-light);line-height:1.4}.calculator-main{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.input-section,.result-section{background:var(--bg-secondary);border:1px solid var(--border-color);padding:12px;box-shadow:var(--shadow-md)}.section-title{display:flex;align-items:center;gap:6px;margin:0 0 10px 0;padding-bottom:8px;border-bottom:1px solid var(--border-color);font-size:19px;font-weight:700;color:var(--color-warning)}.section-title svg{flex-shrink:0}.input-group{margin-bottom:12px}.input-group label{display:block;margin-bottom:6px;font-size:16px;font-weight:600;color:var(--text-secondary)}.date-input{width:100%;padding:10px 12px;border:1px solid var(--border-color);background:var(--bg-secondary);font-size:17px;font-weight:600;color:var(--text-primary);font-family:'Noto Sans KR','Malgun Gothic',-apple-system,BlinkMacSystemFont,sans-serif}.date-input:focus{outline:none;background:var(--input-focus-bg);border-color:var(--color-warning)}.date-input:disabled{opacity:.6;cursor:not-allowed}.checkbox-wrapper{display:flex;align-items:center;gap:8px;margin-top:8px;padding:8px 10px;background:var(--bg-primary);border:1px dashed var(--border-color)}.checkbox-wrapper input[type="checkbox"]{margin:0;accent-color:var(--color-warning);cursor:pointer;width:16px;height:16px}.checkbox-label{margin:0;font-size:16px;font-weight:600;color:var(--text-secondary);cursor:pointer}.btn-calculate{width:100%;padding:14px;margin-bottom:10px;background:var(--color-accent);border:1.5px solid var(--border-color);color:#fff;font-size:19px;font-weight:700;cursor:pointer;box-shadow:var(--shadow-md);transition:all 0.1s;font-family:'Noto Sans KR','Malgun Gothic',-apple-system,BlinkMacSystemFont,sans-serif}.btn-calculate:hover{transform:translate(1px,1px);box-shadow:3px 3px 0 rgba(0,0,0,.15)}.btn-calculate:active{transform:translate(4px,4px);box-shadow:none}.button-group{display:grid;grid-template-columns:1fr;gap:8px;margin-bottom:12px}.btn-reset{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;background:var(--color-warning);border:1px solid var(--border-color);color:#fff;font-size:16px;font-weight:600;cursor:pointer;box-shadow:var(--shadow-sm);transition:all 0.1s;font-family:'Noto Sans KR','Malgun Gothic',-apple-system,BlinkMacSystemFont,sans-serif}.btn-reset:hover{transform:translate(.5px,.5px);box-shadow:1.5px 1.5px 0 rgba(0,0,0,.1)}.btn-reset:active{transform:translate(2px,2px);box-shadow:none}.btn-reset svg{flex-shrink:0}.info-box{padding:12px;background:var(--bg-primary);border:1px dashed var(--border-color)}.info-box h4{display:flex;align-items:center;gap:6px;margin:0 0 8px 0;font-size:17px;font-weight:700;color:var(--text-primary)}.info-box h4 svg{flex-shrink:0}.info-box ul{margin:0;padding:0;list-style:none}.info-box li{position:relative;margin-bottom:6px;padding-left:15px;font-size:15px;color:var(--text-secondary);line-height:1.5}.info-box li:before{content:"•";position:absolute;left:0;color:var(--color-warning);font-weight:700}.info-box li:last-child{margin-bottom:0}.info-box strong{color:var(--text-primary);font-weight:700}.result-section{min-height:450px;display:flex;flex-direction:column}.result-content{flex:1}.current-time-display{margin-top:8px;padding:8px 12px;background:var(--bg-primary);border:1px dashed var(--border-color);text-align:center}.current-time-label{font-size:15px;font-weight:600;color:var(--text-secondary);margin-bottom:4px}.current-time-value{font-size:18px;font-weight:700;color:var(--color-teal);font-family:'Courier New',Courier,monospace}.age-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.age-card{padding:15px;border:1px solid var(--border-color);text-align:center;background:var(--bg-primary)}.international-card{border-left:4px solid var(--color-accent)}.korean-card{border-left:4px solid var(--color-warning)}.card-label{font-size:15px;font-weight:600;color:var(--text-secondary);margin-bottom:8px}.card-value{font-size:35px;font-weight:700;margin:5px 0;font-family:'Courier New',Courier,monospace}.international-card .card-value{color:var(--color-accent)}.korean-card .card-value{color:var(--color-warning)}.card-unit{font-size:16px;font-weight:600;color:var(--text-light)}.time-box{margin-bottom:12px;padding:12px;background:var(--bg-primary);border:1px solid var(--border-color)}.box-title{margin:0 0 10px 0;padding-bottom:8px;border-bottom:1px dashed var(--border-color);font-size:17px;font-weight:700;color:var(--text-primary)}.time-list{display:flex;flex-direction:column;gap:8px}.time-item{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:var(--bg-secondary);border:1px solid var(--border-color)}.time-label{font-size:16px;font-weight:600;color:var(--text-secondary)}.time-value{font-size:18px;font-weight:700;color:var(--color-accent);font-family:'Courier New',Courier,monospace}.additional-info{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.info-item{display:flex;flex-direction:column;padding:12px;background:var(--bg-primary);border:1px solid var(--border-color)}.info-content{flex:1;min-width:0}.info-label{font-size:14px;font-weight:600;color:var(--text-light);margin-bottom:3px}.info-value{font-size:17px;font-weight:700;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.footer-note{margin-top:12px;padding:10px;background:var(--bg-primary);border:1px dashed var(--border-color);text-align:center}.footer-note p{margin:0;font-size:15px;color:var(--text-light)}.toast{position:fixed;bottom:20px;right:20px;display:flex;align-items:flex-start;gap:10px;padding:12px 16px;background:var(--bg-secondary);border:2px solid var(--border-color);box-shadow:var(--shadow-lg);max-width:350px;transform:translateX(400px);transition:transform 0.3s ease;z-index:1000}.toast.show{transform:translateX(0)}.toast-icon{font-size:20px;flex-shrink:0}.toast-content{flex:1}.toast-title{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:4px}.toast-message{font-size:15px;color:var(--text-secondary);line-height:1.4}@media (max-width:968px){.calculator-main{grid-template-columns:1fr}.additional-info{grid-template-columns:1fr}}@media (max-width:768px){.days-lived-counter-container{margin:8px 5px;width:calc(100% - 10px);padding:10px}.calculator-header h2{font-size:26px}.subtitle{font-size:16px}.age-cards{grid-template-columns:1fr}.dark-mode-toggle{top:8px;right:8px;padding:6px 10px;font-size:16px}.toast{right:10px;left:10px;max-width:calc(100% - 20px)}}@media (max-width:480px){.days-lived-counter-container{padding:8px;border-width:1px}.calculator-header h2{font-size:24px}.card-value{font-size:30px}.additional-info{gap:8px}.info-item{padding:10px}}