.apartment-area-calculator-container,.apartment-area-calculator-container *,.apartment-area-calculator-container *::before,.apartment-area-calculator-container *::after{box-sizing:border-box}.apartment-area-calculator-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);--radius-container:8px;--radius-section:6px;--radius-button:4px;--radius-input:4px;--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;--bar-exclusive:#3498db;--bar-common:#95a5a6}.apartment-area-calculator-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;--bar-exclusive:#5dade2;--bar-common:#7f8c8d}@media (prefers-color-scheme:dark){.apartment-area-calculator-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;--bar-exclusive:#5dade2;--bar-common:#7f8c8d}}.apartment-area-calculator-container{position:relative;max-width:900px;width:100%;margin:8px auto;padding:8px;background:var(--bg-primary);border:2px solid var(--border-color);border-radius:var(--radius-container);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Malgun Gothic',sans-serif;color:var(--text-primary);box-shadow:var(--shadow-lg);line-height:1.5}.dark-mode-toggle{position:absolute;top:10px;right:10px;padding:6px 10px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-button);cursor:pointer;transition:all 0.2s;box-shadow:var(--shadow-sm);font-size:15px;font-weight:600;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:8px;padding:8px 0}.main-title{font-size:28px;font-weight:800;color:var(--title-color);margin:0 0 6px 0;text-shadow:var(--title-shadow)}.subtitle{font-size:13.5px;color:var(--text-secondary);margin:0}.main-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.input-section,.result-section{background:var(--bg-section);padding:8px;border:1px solid var(--border-color);border-radius:var(--radius-section);box-shadow:var(--shadow-md)}.section-header{display:flex;align-items:center;gap:6px;margin-bottom:8px;padding-bottom:6px;border-bottom:1px solid var(--border-color);font-size:16px;font-weight:700;color:var(--text-primary)}.section-header svg{width:18px;height:18px;stroke:var(--color-accent)}.input-group{margin-bottom:8px}.input-group label{display:block;margin-bottom:4px;font-size:13.5px;font-weight:600;color:var(--text-primary)}.input-group input{width:100%;padding:7px 10px;border:1px solid var(--border-color);border-radius:var(--radius-input);background:var(--bg-secondary);color:var(--text-primary);font-size:14px;font-family:'Courier New',monospace;font-weight:600;transition:all 0.2s;box-shadow:var(--shadow-sm)}.input-group input:focus{outline:none;border-color:var(--color-accent);background:var(--input-focus-bg);box-shadow:0 0 0 2px rgba(52,152,219,.1)}.input-group input::placeholder{color:var(--text-light);font-weight:400}.input-hint{margin:4px 0 0 0;font-size:12px;color:var(--text-light)}.calculate-btn{width:100%;padding:10px;margin-top:8px;background:var(--color-accent);color:#fff;border:1.5px solid var(--border-color);border-radius:var(--radius-button);font-size:15px;font-weight:700;cursor:pointer;transition:all 0.15s;box-shadow:4px 4px 0 rgba(0,0,0,.2);display:flex;align-items:center;justify-content:center;gap:6px}.calculate-btn:hover{filter:brightness(1.05);transform:translate(1px,1px);box-shadow:3px 3px 0 rgba(0,0,0,.2)}.calculate-btn:active{transform:translate(4px,4px);box-shadow:none}.calculate-btn svg{stroke:#fff}.button-group{display:flex;gap:6px;margin-top:6px}.sample-btn,.reset-btn{flex:1;padding:6px 10px;font-size:13.5px;font-weight:600;border:1px solid var(--border-color);border-radius:var(--radius-button);cursor:pointer;transition:all 0.15s;box-shadow:2px 2px 0 rgba(0,0,0,.2);display:flex;align-items:center;justify-content:center;gap:4px}.sample-btn{background:var(--color-success);color:#fff}.reset-btn{background:var(--color-warning);color:#fff}.sample-btn:hover,.reset-btn:hover{filter:brightness(1.05);transform:translate(.5px,.5px);box-shadow:1.5px 1.5px 0 rgba(0,0,0,.2)}.sample-btn:active,.reset-btn:active{transform:translate(2px,2px);box-shadow:none}.sample-btn svg,.reset-btn svg{stroke:#fff}.preset-section{margin-top:10px;padding-top:8px;border-top:1px dashed var(--border-color)}.preset-title{font-size:12px;font-weight:600;color:var(--text-secondary);margin:0 0 6px 0}.preset-buttons{display:grid;grid-template-columns:1fr 1fr;gap:4px}.preset-btn{padding:5px 8px;font-size:12px;font-weight:500;background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-button);cursor:pointer;transition:all 0.15s;box-shadow:var(--shadow-sm)}.preset-btn:hover{background:var(--color-accent);color:#fff;transform:translate(.5px,.5px)}.preset-btn:active{transform:translate(1px,1px);box-shadow:none}.result-content{display:flex;flex-direction:column;gap:8px}.result-cards{display:grid;grid-template-columns:1fr 1fr;gap:6px}.result-card{padding:10px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-section);box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:8px}.result-card.primary{border-left:3px solid var(--color-accent)}.result-card.secondary{border-left:3px solid var(--color-purple)}.card-icon{font-size:24px}.card-content{display:flex;flex-direction:column;gap:2px}.card-label{font-size:12px;font-weight:600;color:var(--text-secondary)}.card-value{font-size:22px;font-weight:700;color:var(--color-accent);font-family:'Courier New',monospace}.result-card.secondary .card-value{color:var(--color-purple)}.card-sublabel{font-size:11px;color:var(--text-light)}.breakdown-section{padding:8px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-section)}.breakdown-title{font-size:13px;font-weight:600;color:var(--text-primary);margin:0 0 8px 0}.breakdown-bar{height:24px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-button);display:flex;overflow:hidden}.bar-exclusive{height:100%;background:var(--bar-exclusive);transition:width 0.5s ease;width:0%}.bar-common{height:100%;background:var(--bar-common);transition:width 0.5s ease;width:0%}.breakdown-legend{margin-top:6px;display:flex;flex-direction:column;gap:4px}.legend-item{display:flex;align-items:center;gap:6px;font-size:12px}.legend-color{width:14px;height:14px;border-radius:3px;border:1px solid var(--border-color)}.legend-color.exclusive{background:var(--bar-exclusive)}.legend-color.common{background:var(--bar-common)}.legend-text{flex:1;color:var(--text-secondary)}.legend-value{font-family:'Courier New',monospace;font-weight:600;color:var(--text-primary)}.detail-section{padding:8px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-section)}.detail-title{font-size:13px;font-weight:600;color:var(--text-primary);margin:0 0 8px 0}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.detail-item{display:flex;justify-content:space-between;align-items:center;padding:6px 8px;background:var(--bg-primary);border-radius:var(--radius-button)}.detail-label{font-size:12px;color:var(--text-secondary)}.detail-value{font-size:13px;font-weight:600;font-family:'Courier New',monospace;color:var(--text-primary)}.explanation-box{padding:8px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-section);border-left:3px solid var(--color-teal)}.explanation-header{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--color-teal);margin-bottom:6px}.explanation-header svg{stroke:var(--color-teal)}.explanation-list{margin:0;padding-left:16px;font-size:12px;color:var(--text-secondary)}.explanation-list li{margin-bottom:3px}.explanation-list li:last-child{margin-bottom:0}.info-section{margin-top:8px;padding:8px;background:var(--bg-section);border:1px solid var(--border-color);border-radius:var(--radius-section);box-shadow:var(--shadow-sm)}.info-header{display:flex;align-items:center;gap:6px;margin-bottom:8px;padding-bottom:6px;border-bottom:1px solid var(--border-color);font-size:15px;font-weight:700;color:var(--text-primary)}.info-header svg{stroke:var(--color-teal)}.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.info-card{padding:8px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-button)}.info-card-title{font-size:15px;font-weight:700;color:var(--text-primary);margin-bottom:4px}.info-card-text{font-size:13.5px;color:var(--text-secondary);margin:0;line-height:1.4}.info-card-text strong{color:var(--color-accent)}.toast{position:fixed;bottom:20px;right:20px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-button);padding:10px 15px;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:10px;opacity:0;transform:translateY(20px);transition:all 0.3s;z-index:1000;max-width:300px}.toast.show{opacity:1;transform:translateY(0)}.toast svg{stroke:var(--color-success);flex-shrink:0}.toast-content{display:flex;flex-direction:column;gap:3px}.toast-title{font-size:13.5px;font-weight:600;color:var(--text-primary)}.toast-value{font-size:12px;color:var(--text-secondary);font-family:'Courier New',monospace}@media (max-width:768px){.apartment-area-calculator-container{margin:6px 5px;padding:7px;width:calc(100% - 10px)}.main-grid{grid-template-columns:1fr;gap:6px}.main-title{font-size:24px}.section-header{font-size:15px}.dark-mode-toggle{font-size:14px;padding:5px 8px}.info-grid{grid-template-columns:1fr 1fr}.result-cards{grid-template-columns:1fr 1fr}}@media (max-width:480px){.apartment-area-calculator-container{padding:6px;border-width:1px}.input-section,.result-section{padding:6px}.main-title{font-size:22px}.subtitle{font-size:12.5px}.info-grid{grid-template-columns:1fr}.result-cards{grid-template-columns:1fr}.detail-grid{grid-template-columns:1fr}.preset-buttons{grid-template-columns:1fr}.card-value{font-size:18px}.toast{left:10px;right:10px;bottom:10px;max-width:none}}