:root{--bg: #faf9f7;--bg-elevated: #ffffff;--bg-sunken: #f3f1ee;--text-primary: #1a1a1a;--text-secondary: #6b6560;--text-tertiary: #a09a93;--accent: #1a6b5a;--accent-light: #e8f3f0;--accent-dark: #145647;--border: #e5e1dc;--border-strong: #cdc7bf;--error: #c4442a;--error-light: #fdf0ed;--font-display: "Instrument Serif", Georgia, "Times New Roman", serif;--font-body: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "SF Mono", "Fira Code", "Consolas", monospace;--radius: 4px;--radius-lg: 8px;--transition: .2s ease-out;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background:var(--bg);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{max-width:640px;margin:0 auto;padding:80px 24px 48px;min-height:100vh;display:flex;flex-direction:column}.header{margin-bottom:48px;text-align:center}.title{font-family:var(--font-display);font-size:3rem;font-weight:400;letter-spacing:-.02em;line-height:1.1;color:var(--text-primary)}.subtitle{font-size:.95rem;color:var(--text-secondary);margin-top:8px;letter-spacing:.02em}.main{flex:1}.footer{margin-top:64px;text-align:center;font-size:.75rem;color:var(--text-tertiary);letter-spacing:.1em;text-transform:uppercase}.fade-in{animation:fadeIn .4s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes blink{0%,50%{opacity:1}51%,to{opacity:0}}.file-upload{border:1.5px dashed var(--border-strong);border-radius:var(--radius-lg);padding:40px 24px;text-align:center;cursor:pointer;transition:all var(--transition);background:var(--bg-elevated)}.file-upload:hover{border-color:var(--accent);background:var(--accent-light)}.file-upload.dragging{border-color:var(--accent);background:var(--accent-light);transform:scale(1.01)}.file-upload.disabled{opacity:.5;pointer-events:none}.file-upload.has-file{border-style:solid;border-color:var(--accent);padding:20px 24px}.file-placeholder .drop-text{font-size:1rem;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.file-placeholder .format-hint{font-size:.8rem;color:var(--text-tertiary);letter-spacing:.04em}.file-info{display:flex;align-items:center;gap:14px;text-align:left}.file-icon{font-size:1.5rem;color:var(--accent);width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--accent-light);border-radius:var(--radius)}.file-name{font-weight:600;font-size:.95rem;word-break:break-all}.file-size{font-size:.8rem;color:var(--text-tertiary);margin-top:2px}.language-selector{margin-top:20px}.field-label{display:block;font-size:.8rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px}.lang-select,.custom-lang-input{width:100%;padding:10px 14px;font-family:var(--font-body);font-size:.95rem;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--bg-elevated);color:var(--text-primary);transition:border-color var(--transition);-webkit-appearance:none;-moz-appearance:none;appearance:none}.lang-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%236b6560' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}.lang-select:focus,.custom-lang-input:focus{outline:none;border-color:var(--accent)}.custom-input-row{display:flex;gap:8px}.custom-input-row .custom-lang-input{flex:1}.back-btn{width:42px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--bg-elevated);cursor:pointer;font-size:1rem;color:var(--text-secondary);transition:all var(--transition)}.back-btn:hover{border-color:var(--text-secondary)}.quote-card{margin-top:18px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);padding:16px;box-shadow:var(--shadow-sm)}.quote-loading{background:linear-gradient(120deg,var(--bg-elevated),var(--accent-light))}.quote-error{border-color:var(--error);background:var(--error-light)}.quote-header{display:flex;justify-content:space-between;align-items:baseline;gap:12px}.quote-title{font-size:.82rem;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em}.quote-model{font-family:var(--font-mono);font-size:.72rem;color:var(--text-tertiary)}.quote-subtitle{margin-top:8px;color:var(--text-secondary);font-size:.9rem}.quote-prices{margin-top:10px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.quote-price-block{padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg)}.quote-price-label{display:block;font-size:.73rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.06em}.quote-price-value,.quote-price-cap{display:block;margin-top:6px;font-size:1.05rem}.quote-price-value{color:var(--accent-dark)}.quote-price-cap{color:var(--text-primary)}.quote-meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px 12px;font-family:var(--font-mono);font-size:.72rem;color:var(--text-tertiary)}.translate-btn{width:100%;margin-top:24px;padding:14px;font-family:var(--font-body);font-size:1rem;font-weight:600;color:#fff;background:var(--accent);border:none;border-radius:var(--radius);cursor:pointer;transition:all var(--transition);letter-spacing:.02em}.translate-btn:hover:not(:disabled){background:var(--accent-dark)}.translate-btn:disabled{opacity:.4;cursor:not-allowed}.reset-btn{display:block;width:100%;margin-top:16px;padding:12px;font-family:var(--font-body);font-size:.9rem;font-weight:500;color:var(--text-secondary);background:transparent;border:1.5px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:all var(--transition)}.reset-btn:hover{border-color:var(--text-secondary);color:var(--text-primary)}.progress-panel{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm)}.progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.status-label{font-size:.9rem;font-weight:500;color:var(--text-secondary)}.progress-pct{font-family:var(--font-mono);font-size:.85rem;font-weight:500;color:var(--accent)}.progress-bar-track{height:6px;background:var(--bg-sunken);border-radius:3px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--accent);border-radius:3px;transition:width .3s ease-out}.chunk-grid{display:flex;flex-wrap:wrap;gap:4px;margin-top:16px}.chunk-cell{width:12px;height:12px;border-radius:2px;transition:all var(--transition)}.chunk-pending{background:var(--bg-sunken);border:1px solid var(--border)}.chunk-active{background:var(--accent-light);border:1px solid var(--accent);animation:pulse 1.2s ease-in-out infinite}.chunk-done{background:var(--accent);border:1px solid var(--accent)}.chunk-stats{margin-top:12px;font-size:.8rem;color:var(--text-tertiary);font-family:var(--font-mono)}.live-preview{margin-top:20px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;background:var(--bg-sunken);border-bottom:1px solid var(--border)}.preview-label{font-size:.75rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em}.preview-chunk{font-family:var(--font-mono);font-size:.7rem;color:var(--text-tertiary)}.preview-content{padding:16px;font-family:var(--font-mono);font-size:.85rem;line-height:1.7;color:var(--text-primary);max-height:300px;overflow-y:auto;white-space:pre-wrap;word-break:break-word}.cursor-blink{animation:blink .8s step-end infinite;color:var(--accent);font-weight:300}.download-section{text-align:center;padding:40px 24px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.done-icon{width:56px;height:56px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:var(--accent);background:var(--accent-light);border-radius:50%}.done-title{font-family:var(--font-display);font-size:1.5rem;font-weight:400;margin-bottom:4px}.done-subtitle{font-size:.85rem;color:var(--text-tertiary);font-family:var(--font-mono);margin-bottom:24px;word-break:break-all}.download-btn{display:inline-block;padding:12px 40px;font-family:var(--font-body);font-size:1rem;font-weight:600;color:#fff;background:var(--accent);border-radius:var(--radius);text-decoration:none;transition:all var(--transition);letter-spacing:.02em}.download-btn:hover{background:var(--accent-dark)}.error-box{text-align:center;padding:32px 24px;background:var(--error-light);border:1px solid var(--error);border-radius:var(--radius-lg)}.error-icon{width:48px;height:48px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;color:var(--error);background:#fff;border-radius:50%;border:2px solid var(--error)}.error-title{font-size:1rem;font-weight:600;color:var(--error);margin-bottom:4px}.error-message{font-size:.85rem;color:var(--text-secondary);font-family:var(--font-mono);word-break:break-word}@media(max-width:480px){.app{padding:48px 16px 32px}.title{font-size:2.2rem}.file-upload{padding:28px 16px}.quote-prices{grid-template-columns:1fr}}