:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;color:#213547;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;padding:0;min-width:320px;min-height:100vh}#root{width:100%;min-height:100vh}.phrase-list{display:flex;flex-direction:column;gap:.5rem;padding:1rem;max-height:70vh;overflow-y:auto}.phrase-list-empty{padding:2rem;text-align:center;color:#666}.phrase-item{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;background:#fff;border-radius:12px;box-shadow:0 2px 4px #0000000d;cursor:pointer;transition:all .2s ease;border:1px solid #e0e0e0;-webkit-tap-highlight-color:transparent}.phrase-item:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a;background:#f8f9fa}.phrase-item:active{transform:translateY(0);box-shadow:0 2px 4px #0000000d}.phrase-japanese{font-size:1.2rem;font-weight:500;color:#2c3e50}.phrase-arrow{font-size:1.5rem;color:#95a5a6;font-weight:300}@media (max-width: 768px){.phrase-list{padding:.75rem}.phrase-item{padding:.875rem 1rem}.phrase-japanese{font-size:1.1rem}}.phrase-detail{padding:1rem;max-width:600px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.back-button{display:inline-flex;align-items:center;padding:.5rem 1rem;background:#fff;border:1px solid #e0e0e0;border-radius:8px;color:#2c3e50;font-size:1rem;cursor:pointer;transition:all .2s ease;margin-bottom:1.5rem;align-self:flex-start}.back-button:hover{background:#f8f9fa;transform:translate(-2px)}.phrase-content{flex:1;display:flex;flex-direction:column;gap:2rem}.phrase-section{background:#fff;border-radius:12px;padding:1.5rem;box-shadow:0 2px 8px #00000014;border:1px solid #e0e0e0}.phrase-label{font-size:.875rem;color:#7f8c8d;text-transform:uppercase;letter-spacing:.5px;margin-bottom:1rem;font-weight:600}.phrase-text{font-size:1.25rem;color:#2c3e50;margin-bottom:1rem;line-height:1.6}.phrase-text-large{font-size:2rem;font-weight:500}.translation-text{color:#27ae60}.speak-button{padding:.75rem 1.5rem;background:#3498db;color:#fff;border:none;border-radius:8px;font-size:1rem;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;gap:.5rem}.speak-button:hover{background:#2980b9;transform:translateY(-1px)}.speak-button:active{transform:translateY(0)}.speak-button.speaking{background:#e74c3c}.speak-button.speaking:hover{background:#c0392b}.speak-button:disabled{opacity:.5;cursor:not-allowed}.speak-button:disabled:hover{transform:none;background:#3498db}.language-selector{display:flex;flex-direction:column;gap:.75rem;padding:1rem;background:#fff;border-radius:12px;box-shadow:0 2px 8px #00000014;border:1px solid #e0e0e0}.language-label{font-size:.9rem;color:#7f8c8d;font-weight:500}.language-select{padding:.875rem 2.5rem .875rem 1rem;background:#fff;border:2px solid #3498db;border-radius:8px;font-size:1.1rem;color:#2c3e50;cursor:pointer;transition:all .2s ease;appearance:none;background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20width%3D%2714%27%20height%3D%278%27%20viewBox%3D%270%200%2014%208%27%20xmlns%3D%27http%3A//www.w3.org/2000/svg%27%3E%3Cpath%20d%3D%27M1%201l6%206%206-6%27%20stroke%3D%27%233498db%27%20stroke-width%3D%272%27%20fill%3D%27none%27%20stroke-linecap%3D%27round%27/%3E%3C/svg%3E);background-repeat:no-repeat;background-position:right 1rem center}.language-select:hover{background-color:#f8f9fa}.language-select:focus{outline:none;box-shadow:0 0 0 3px #3498db33}.no-translation{color:#95a5a6;font-style:italic;text-align:center}.loading{padding:2rem;text-align:center;color:#7f8c8d;font-style:italic}.translation-section{background:#f8f9fa}@media (max-width: 768px){.phrase-detail{padding:.75rem}.phrase-text-large{font-size:1.75rem}.phrase-section{padding:1.25rem}.language-selector{flex-wrap:wrap}.lang-button{min-width:calc(33.33% - .35rem)}}.qr-modal-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.qr-modal{background:#fff;border-radius:16px;padding:2rem;max-width:450px;width:100%;position:relative;animation:slideUp .3s ease;box-shadow:0 10px 40px #0003}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.qr-close-button{position:absolute;top:1rem;right:1rem;width:32px;height:32px;border-radius:50%;border:none;background:#f0f0f0;color:#666;font-size:1.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;line-height:1}.qr-close-button:hover{background:#e0e0e0;color:#333}.qr-title{font-size:1.5rem;color:#2c3e50;margin-bottom:.5rem;text-align:center}.qr-description{color:#7f8c8d;text-align:center;margin-bottom:1.5rem;font-size:.95rem;line-height:1.5}.qr-code-container{display:flex;justify-content:center;margin:1.5rem 0;padding:1rem;background:#f8f9fa;border-radius:12px}.qr-code-image{width:250px;height:250px;image-rendering:crisp-edges;image-rendering:pixelated}.qr-loading{padding:3rem;text-align:center;color:#7f8c8d;font-style:italic}.qr-url-container{display:flex;gap:.5rem;margin:1.5rem 0}.qr-url-input{flex:1;padding:.75rem 1rem;border:1px solid #e0e0e0;border-radius:8px;font-size:.9rem;color:#555;background:#f8f9fa}.qr-url-input:focus{outline:none;border-color:#3498db;background:#fff}.qr-copy-button{padding:.75rem 1.5rem;background:#3498db;color:#fff;border:none;border-radius:8px;font-size:.9rem;cursor:pointer;transition:all .2s ease;white-space:nowrap}.qr-copy-button:hover{background:#2980b9}.qr-copy-button:active{transform:scale(.98)}.qr-hint{text-align:center;color:#95a5a6;font-size:.85rem;margin-top:1rem;font-style:italic}@media (max-width: 768px){.qr-modal{padding:1.5rem}.qr-code-image{width:200px;height:200px}.qr-url-container{flex-direction:column}.qr-copy-button{width:100%}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}.app-container{min-height:100vh;background:#f5f6fa}.app-header{background:#fff;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 10px #00000014;position:sticky;top:0;z-index:100}.app-title{font-size:1.75rem;color:#2c3e50;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.qr-button{width:44px;height:44px;border-radius:12px;border:1px solid #e0e0e0;background:#fff;font-size:1.5rem;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.qr-button:hover{background:#f8f9fa;transform:scale(1.05)}.qr-button:active{transform:scale(.95)}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:#fff}.spinner{width:48px;height:48px;border:4px solid #f0f0f0;border-top-color:#3498db;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-screen p{margin-top:1rem;color:#7f8c8d;font-size:1.1rem}.error-message{background:#fee;color:#c33;padding:1rem;margin:1rem;border-radius:8px;border:1px solid #fcc}.sheet-input-container{padding:1rem;background:#fff;margin:1rem;border-radius:12px;box-shadow:0 2px 8px #00000014}.sheet-form{display:flex;gap:.5rem}.sheet-input{flex:1;padding:.75rem 1rem;border:1px solid #e0e0e0;border-radius:8px;font-size:.95rem}.sheet-input:focus{outline:none;border-color:#3498db}.sheet-submit{padding:.75rem 1.5rem;background:#3498db;color:#fff;border:none;border-radius:8px;font-size:.95rem;cursor:pointer;transition:all .2s ease}.sheet-submit:hover{background:#2980b9}.demo-notice{margin-top:.75rem;font-size:.85rem;color:#7f8c8d;text-align:center}@media (max-width: 768px){.app-header{padding:.875rem 1rem}.app-title{font-size:1.5rem}.sheet-input-container{margin:.75rem;padding:.875rem}.sheet-form{flex-direction:column}.sheet-submit{width:100%}}