:root{--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--bg-tertiary: #f7fafc;--text-primary: #2d3748;--text-secondary: #4a5568;--text-tertiary: #666;--border-color: #e2e8f0;--sidebar-bg: #2d3748;--sidebar-text: #e2e8f0;--sidebar-hover: #4a5568;--sidebar-active: #667eea;--card-bg: #ffffff;--input-bg: #ffffff;--input-border: #ddd;--shadow: rgba(0, 0, 0, .1);--error-bg: #fed7d7;--error-text: #c53030;--success-bg: #c6f6d5;--success-text: #22543d}[data-theme=dark]{--bg-primary: #1a202c;--bg-secondary: #2d3748;--bg-tertiary: #374151;--text-primary: #f7fafc;--text-secondary: #e2e8f0;--text-tertiary: #cbd5e0;--border-color: #4a5568;--sidebar-bg: #111827;--sidebar-text: #e2e8f0;--sidebar-hover: #374151;--sidebar-active: #667eea;--card-bg: #2d3748;--input-bg: #374151;--input-border: #4a5568;--shadow: rgba(0, 0, 0, .3);--error-bg: #742a2a;--error-text: #feb2b2;--success-bg: #22543d;--success-text: 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var(--shadow);padding:1.5rem;margin-bottom:1.5rem;transition:background-color .3s ease}.badge{display:inline-block;padding:.25rem .5rem;border-radius:4px;font-size:.875rem;font-weight:500}.badge-success{background-color:#c6f6d5;color:#22543d}.badge-danger{background-color:#fed7d7;color:#742a2a}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:var(--card-bg);padding:2rem;border-radius:8px;max-width:500px;width:90%;max-height:90vh;overflow-y:auto}.modal h2{margin-bottom:1.5rem;color:var(--text-primary)}.error-message{background-color:var(--error-bg);color:var(--error-text);padding:.75rem;border-radius:4px;margin-bottom:1rem;text-align:center}.success-message{background-color:var(--success-bg);color:var(--success-text);padding:.75rem;border-radius:4px;margin-bottom:1rem;text-align:center}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}table thead{background-color:var(--bg-tertiary)}table th{text-align:left;padding:.75rem;font-weight:600;color:var(--text-secondary);border-bottom:2px solid var(--border-color)}table td{padding:.75rem;border-bottom:1px solid var(--border-color);color:var(--text-primary)}table tr:hover{background-color:var(--bg-tertiary)}.dashboard{display:flex;height:100vh;overflow:hidden}.sidebar{width:250px;background-color:var(--sidebar-bg);color:var(--sidebar-text);transition:width .3s;overflow-y:auto}.sidebar.collapsed{width:60px}.sidebar.collapsed .menu-text{display:none}.sidebar.collapsed .sidebar-menu .icon{margin-right:0}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:1rem;border-bottom:1px solid var(--border-color)}.sidebar-toggle{background:none;border:none;color:var(--sidebar-text);cursor:pointer;font-size:1.25rem;padding:.5rem}.sidebar-menu{list-style:none;padding:1rem 0}.sidebar-menu li{margin:0}.sidebar-menu a{display:flex;align-items:center;padding:1rem 1.5rem;color:var(--sidebar-text);text-decoration:none;transition:background-color .2s}.sidebar-menu a:hover{background-color:var(--sidebar-hover)}.sidebar-menu a.active{background-color:var(--sidebar-active)}.sidebar-menu .icon{margin-right:1rem;font-size:1.25rem}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden}.topbar{height:60px;background-color:var(--bg-primary);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem;box-shadow:0 1px 3px var(--shadow);transition:background-color .3s ease}.topbar-left{display:flex;align-items:center;gap:1rem}.topbar-logo{font-size:1.75rem;font-weight:700;color:#667eea;text-decoration:none}.topbar-right{position:relative;display:flex;align-items:center;gap:1rem}.user-menu{display:flex;align-items:center;gap:.5rem;cursor:pointer;padding:.5rem;border-radius:4px;transition:background-color .2s}.user-menu:hover{background-color:var(--bg-tertiary)}.user-name{font-weight:500;color:var(--text-primary)}.dropdown{position:absolute;top:100%;right:0;margin-top:.5rem;background:var(--card-bg);border:1px solid var(--border-color);border-radius:4px;box-shadow:0 4px 6px var(--shadow);min-width:150px;z-index:1000}.dropdown button{width:100%;padding:.75rem 1rem;border:none;background:none;text-align:left;cursor:pointer;color:var(--text-primary);transition:background-color .2s}.dropdown button:hover{background-color:var(--bg-tertiary)}.theme-toggle{background:none;border:none;cursor:pointer;font-size:1.75rem;padding:.5rem;border-radius:4px;transition:background-color .2s;display:flex;align-items:center;justify-content:center;color:var(--text-primary)}.theme-toggle:hover{background-color:var(--bg-tertiary)}.content-area{flex:1;overflow-y:auto;padding:1.5rem}.page-header{margin-bottom:1.5rem}.page-header h1{font-size:1.75rem;color:var(--text-primary);margin-bottom:.5rem}.page-header p{color:var(--text-tertiary);margin-top:.5rem}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}.auth-card{background:var(--card-bg);padding:2rem;border-radius:8px;box-shadow:0 4px 6px var(--shadow);width:100%;max-width:400px}.auth-card h2{margin-bottom:.5rem;text-align:center;color:var(--text-primary)}.auth-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:1.5rem}.auth-link{text-align:center;margin-top:1rem;color:var(--text-tertiary)}.auth-link a{color:#667eea;text-decoration:none;font-weight:500}.auth-link a:hover{text-decoration:underline}.generate-page{max-width:600px;margin:0 auto}.generate-page .page-header{margin-bottom:1.5rem}.generate-page .page-header h1{color:var(--text-primary);margin-bottom:.5rem}.generate-page .page-header .page-description{color:var(--text-secondary)}.generate-card{background:var(--card-bg);padding:1.5rem;border-radius:8px;box-shadow:0 2px 4px var(--shadow)}.generate-card .form-row{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}@media (max-width: 480px){.generate-card .form-row{grid-template-columns:1fr}}.generate-card .btn-large{width:100%;padding:.75rem 1rem;font-size:1.25rem;margin-top:.75rem}.generate-card .spinner{display:inline-block;width:16px;height:16px;border:2px solid transparent;border-top-color:currentColor;border-radius:50%;animation:spin .8s linear infinite;margin-right:.5rem}@keyframes spin{to{transform:rotate(360deg)}}.success-message{background:#10b9811a;color:#10b981;padding:.75rem;border-radius:4px;margin-bottom:1rem;text-align:center}.error-page{min-height:100vh;flex-direction:column;display:flex;align-items:center;justify-content:center;text-align:center;padding:2rem}.error-page h1{font-size:4rem;color:#667eea;margin-bottom:1rem}.error-page p{font-size:1.25rem;color:var(--text-secondary);margin-bottom:2rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.stats-grid__item--primary{background:var(--card-bg);border-radius:8px;box-shadow:0 1px 3px var(--shadow);padding:1.5rem;margin-bottom:1.5rem;transition:background-color .3s ease;text-align:center}.stats-grid__item--primary h3{color:#667eea;font-size:2rem;margin-bottom:.5rem}.stats-grid__item--primary p{color:var(--text-tertiary);margin:0}.stats-grid__item--secondary{background:var(--card-bg);border-radius:8px;box-shadow:0 1px 3px var(--shadow);padding:1.5rem;margin-bottom:1.5rem;transition:background-color .3s ease;text-align:center}.stats-grid__item--secondary h3{color:#764ba2;font-size:2rem;margin-bottom:.5rem}.stats-grid__item--secondary p{color:var(--text-tertiary);margin:0}.stats-grid__item--tertiary{background:var(--card-bg);border-radius:8px;box-shadow:0 1px 3px var(--shadow);padding:1.5rem;margin-bottom:1.5rem;transition:background-color .3s ease;text-align:center}.stats-grid__item--tertiary h3{color:#f093fb;font-size:2rem;margin-bottom:.5rem}.stats-grid__item--tertiary p{color:var(--text-tertiary);margin:0}.chart-card{background:var(--card-bg);border-radius:8px;box-shadow:0 1px 3px var(--shadow);padding:1.5rem;margin-bottom:1.5rem;transition:background-color .3s ease}.chart-card h2{margin-bottom:1rem;color:var(--text-primary)}