:root{--primary: #1e40af;--primary-dark: #1e3a8a;--primary-light: #3b82f6;--secondary: #10b981;--accent: #f59e0b;--danger: #ef4444;--background: #f8fafc;--surface: #ffffff;--text-primary: #1e293b;--text-secondary: #64748b;--border: #e2e8f0;--shadow: rgba(15, 23, 42, .08);--gradient-primary: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);--gradient-success: linear-gradient(135deg, #10b981 0%, #34d399 100%)}.dark-mode{--primary: #3b82f6;--primary-dark: #2563eb;--primary-light: #60a5fa;--secondary: #10b981;--accent: #f59e0b;--danger: #ef4444;--background: #0f172a;--surface: #1e293b;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--border: #334155;--shadow: rgba(0, 0, 0, .3);--gradient-primary: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);--gradient-success: linear-gradient(135deg, #10b981 0%, #34d399 100%)}.app{min-height:100vh;background:var(--background);display:flex;flex-direction:column}.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem;background:linear-gradient(135deg,#f8fafc,#e2e8f0);position:relative}.dark-mode .login-container{background:linear-gradient(135deg,#0f172a,#1e293b)}.dark-mode-toggle-login{position:absolute;top:2rem;right:2rem;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:.75rem;cursor:pointer;color:var(--text-primary);display:flex;align-items:center;justify-content:center;transition:all .2s ease;box-shadow:0 2px 8px var(--shadow);z-index:10}.dark-mode-toggle-login:hover{background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px var(--shadow)}.dark-mode-toggle-login svg{font-size:1.25rem}.login-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:3rem;width:100%;max-width:450px;box-shadow:0 10px 40px #0f172a26}.login-header{text-align:center;margin-bottom:2rem}.login-icon{font-size:3rem;color:var(--primary);margin-bottom:1rem}.login-header h1{font-size:2rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0 0 .5rem}.login-header p{color:var(--text-secondary);font-size:1rem;margin:0}.login-form{display:flex;flex-direction:column;gap:1.5rem}.error-message{background:#fef2f2;border:1px solid #fecaca;color:var(--danger);padding:.75rem;border-radius:8px;font-size:.875rem}.navbar{background:var(--surface);border-bottom:1px solid var(--border);padding:1rem 0;box-shadow:0 2px 8px var(--shadow)}.nav-content{max-width:1400px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center}.nav-brand{display:flex;align-items:center;gap:.75rem}.brand-icon{font-size:1.75rem;color:var(--primary)}.nav-brand h1{font-size:1.5rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0}.nav-links{display:flex;gap:.5rem}.nav-link{display:flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;background:none;border:none;border-radius:10px;color:var(--text-secondary);font-weight:500;cursor:pointer;transition:all .2s ease;font-size:.9375rem}.nav-link:hover{color:var(--primary);background:var(--background)}.nav-link.active{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 12px #1e40af4d}.dark-mode-toggle{position:relative}.dark-mode-toggle:hover{background:var(--primary);color:#fff}.nav-icon{font-size:1.125rem}.app-main{flex:1;max-width:1400px;width:100%;margin:0 auto;padding:2rem}.home-page{display:flex;flex-direction:column;gap:2.5rem}.welcome-section{margin-bottom:1rem}.welcome-section h2{font-size:2rem;font-weight:700;color:var(--text-primary);margin:0 0 .5rem}.welcome-subtitle{color:var(--text-secondary);font-size:1.125rem;margin:0}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:1.5rem;display:flex;align-items:center;gap:1.5rem;transition:all .3s ease;box-shadow:0 2px 8px var(--shadow);position:relative;overflow:hidden}.stat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-primary)}.stat-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px #1e40af26;border-color:var(--primary-light)}.stat-icon-wrapper{width:64px;height:64px;border-radius:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--gradient-primary);color:#fff;box-shadow:0 4px 12px #1e40af40}.stat-icon{font-size:1.75rem}.stat-content{flex:1}.stat-label{font-size:.8125rem;color:var(--text-secondary);font-weight:600;margin:0 0 .5rem;text-transform:uppercase;letter-spacing:.8px}.stat-value{font-size:2.25rem;font-weight:700;color:var(--text-primary);margin:0;line-height:1}.stat-value-small{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin:0;line-height:1}.upload-section{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:2rem;box-shadow:0 2px 8px var(--shadow)}.upload-section h2{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin:0 0 1.5rem}.upload-area{border:2px dashed var(--border);border-radius:12px;padding:4rem 2rem;text-align:center;cursor:pointer;transition:all .3s ease;background:var(--background);margin-bottom:1.5rem}.upload-area:hover{border-color:var(--primary);background:#1e40af0d}.upload-icon{font-size:3rem;color:var(--primary);margin-bottom:1rem}.upload-text{color:var(--text-primary);font-size:1.125rem;font-weight:600;margin:0 0 .5rem}.upload-hint{color:var(--text-secondary);font-size:.9375rem;margin:0}.file-info{background:var(--background);border:1px solid var(--border);border-left:4px solid var(--secondary);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}.file-info-header{display:flex;align-items:center;gap:.5rem;margin-bottom:1rem;font-weight:600;color:var(--text-primary)}.file-info-icon{font-size:1.25rem;color:var(--secondary)}.file-info-details{margin-bottom:1rem}.file-info-details p{margin:.5rem 0;color:var(--text-primary)}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border:none;border-radius:10px;font-size:.9375rem;font-weight:600;cursor:pointer;transition:all .2s ease;background:var(--surface);color:var(--text-primary);box-shadow:0 2px 4px var(--shadow)}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 12px #1e40af4d}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 16px #1e40af66}.btn-secondary{background:var(--surface);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--background);border-color:var(--primary-light);color:var(--primary)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-small{padding:.5rem 1rem;font-size:.875rem}.btn-full{width:100%;justify-content:center}.btn-icon{font-size:1.125rem}.btn-icon.spinning{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.analysis-result{margin-top:2rem;padding:1.5rem;background:var(--background);border:1px solid var(--border);border-left:4px solid var(--primary);border-radius:12px}.analysis-result h3{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin:0 0 1rem}.analysis-result pre{white-space:pre-wrap;word-wrap:break-word;color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:.9375rem;line-height:1.6;margin:0}.dark-mode .analysis-result{background:#1e293b80;border-color:var(--border)}.dark-mode .analysis-result pre{color:var(--text-primary)}.about-page{max-width:900px;margin:0 auto}.about-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:2.5rem;box-shadow:0 2px 8px var(--shadow)}.about-card h2{font-size:2rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0 0 2rem}.about-content{line-height:1.8;color:var(--text-primary)}.about-content section{margin-bottom:2rem}.about-content h3{font-size:1.25rem;font-weight:700;color:var(--primary);margin:0 0 1rem}.about-content p{margin-bottom:1rem;color:var(--text-primary)}.about-content ul{list-style:none;padding:0}.about-content li{padding:.5rem 0 .5rem 1.5rem;position:relative;color:var(--text-primary)}.about-content li:before{content:"•";position:absolute;left:0;font-weight:700;color:var(--primary);font-size:1.25rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--text-primary);font-size:.9375rem}.form-group input{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:10px;font-size:1rem;transition:all .2s ease;background:var(--surface);color:var(--text-primary)}.form-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #1e40af1a}.excel-table-section{margin-top:2rem;margin-bottom:1.5rem}.parsing-message{display:flex;align-items:center;gap:.75rem;padding:1rem;background:#1e40af0d;border:1px solid var(--primary-light);border-radius:12px;color:var(--primary);font-weight:500;margin-bottom:1rem}.dark-mode .parsing-message{background:#3b82f61a;border-color:var(--primary);color:var(--primary-light)}.table-title{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin:0 0 1rem}.empty-sheet{color:var(--text-secondary);font-style:italic;padding:1rem 0;text-align:center}.table-wrapper{overflow-x:auto;margin-top:1rem}.sheet-table{width:100%;border-collapse:collapse;font-size:13px}.sheet-table th,.sheet-table td{border:1px solid #ddd;padding:6px 8px;text-align:left;white-space:nowrap}.sheet-table th{background:#f3f4f6;font-weight:600}.dark-mode .sheet-table th{background:#374151;color:#f9fafb;border-color:#4b5563}.sheet-table tbody tr{cursor:pointer;transition:background .2s}.sheet-table tbody tr:hover{background:#f9fafb}.dark-mode .sheet-table tbody tr:hover{background:#37415180}.dark-mode .sheet-table td{border-color:#4b5563;color:#e5e7eb}.sheet-table .selected-row{background:#e0e7ff!important}.dark-mode .sheet-table .selected-row{background:#3b82f633!important}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}.modal-content{background:var(--surface);border-radius:16px;max-width:600px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #0000004d}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid var(--border)}.modal-header h3{margin:0;color:var(--text-primary);font-size:1.25rem}.modal-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-secondary);padding:.25rem;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:all .2s}.modal-close:hover{background:var(--background);color:var(--text-primary)}.modal-body{padding:1.5rem}.image-upload-area{margin-bottom:1rem}.image-upload-label{display:block;cursor:pointer;border:3px dashed var(--border);border-radius:12px;padding:2rem;text-align:center;transition:all .25s;background:var(--background)}.image-upload-label:hover{border-color:var(--primary);background:#1e40af0d}.dark-mode .image-upload-label:hover{background:#3b82f61a}.upload-placeholder{display:flex;flex-direction:column;align-items:center;gap:.5rem}.upload-placeholder p{margin:0;color:var(--text-primary);font-weight:500}.preview-image{max-width:100%;max-height:400px;border-radius:8px;object-fit:contain}.rationale-result{margin-top:2rem;padding:1.5rem;background:var(--background);border:1px solid var(--border);border-left:4px solid var(--primary);border-radius:12px}.rationale-result h3{margin:0 0 1rem;color:var(--text-primary);font-size:1.25rem}.excel-prompt{margin-top:1rem;padding:1rem;background:var(--background);border:1px solid var(--border);border-radius:8px}.pdf-export-section{margin-top:3rem;padding:2rem;background:var(--surface);border:1px solid var(--border);border-radius:16px}.pdf-form{display:flex;flex-direction:column;gap:1.5rem}.pdf-form .form-group{display:flex;flex-direction:column;gap:.5rem}.pdf-form label{font-weight:600;color:var(--text-primary);font-size:.9375rem}.form-input,.form-textarea{padding:.75rem 1rem;border:1px solid var(--border);border-radius:8px;font-size:.9375rem;font-family:inherit;background:var(--background);color:var(--text-primary);transition:all .2s;width:100%;box-sizing:border-box}.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #1e40af1a}.form-textarea{resize:vertical;min-height:120px}.dark-mode .form-input:focus,.dark-mode .form-textarea:focus{box-shadow:0 0 0 3px #3b82f633}@media (max-width: 768px){.app-main{padding:1rem}.stats-grid{grid-template-columns:1fr}.nav-content{flex-direction:column;gap:1rem}.nav-links{width:100%;justify-content:center}.upload-area{padding:3rem 1.5rem}.sheet-table{font-size:12px}.sheet-table th,.sheet-table td{padding:4px 6px}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f8fafc;color:#1e293b;line-height:1.6;transition:background-color .3s ease,color .3s ease}.dark-mode body{background:#0f172a;color:#f1f5f9}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}