:root{--deep-blue: #232946;--cosmic-orange: #FF9500;--silver-white: #F4F6FB;--graphite: #4A4A4A;--light-blue: #5D8AA8;--success: #2E8B57;--warning: #FF6B35;--info: #4A90E2;--danger: #E53935;--font-primary: "SF Pro Text", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;--font-code: "SF Mono", "Monaco", "Consolas", "Source Code Pro", monospace;--spacing-xs: 8px;--spacing-sm: 15px;--spacing-md: 30px;--spacing-lg: 50px;--radius-sm: 8px;--radius-md: 16px;--radius-lg: 24px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-primary);background:linear-gradient(135deg,var(--deep-blue) 0%,#1a1f36 100%);color:var(--graphite);min-height:100vh;padding:20px;overflow-x:hidden}.app-container{max-width:1400px;margin:0 auto;background:var(--silver-white);border-radius:var(--radius-lg);box-shadow:0 24px 72px #00000040,0 12px 32px #23294626,inset 0 1px #fff3;position:relative;overflow:hidden;display:flex;min-height:85vh}.app-container:before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:linear-gradient(90deg,var(--cosmic-orange),var(--light-blue));z-index:10}.sidebar{width:280px;background:linear-gradient(135deg,rgba(244,246,251,.8) 0%,rgba(240,242,248,.6) 100%);border-right:2px solid rgba(93,138,168,.15);padding:var(--spacing-md) 0;display:flex;flex-direction:column}.sidebar-header{padding:0 var(--spacing-md);margin-bottom:var(--spacing-md);display:flex;align-items:center;justify-content:space-between;color:var(--deep-blue)}.sidebar-title{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:600;font-size:1.2em}.sidebar-title .icon{font-size:1.5em}.user-info{padding:var(--spacing-sm) var(--spacing-md);background:rgba(255,149,0,.1);border-radius:var(--radius-sm);margin:0 var(--spacing-md) var(--spacing-md);display:flex;align-items:center;justify-content:space-between}.user-name{font-size:.9em;color:var(--deep-blue);font-weight:500}.logout-btn{background:transparent;border:none;color:var(--cosmic-orange);cursor:pointer;font-size:.85em;padding:4px 8px;border-radius:4px;transition:background .2s}.logout-btn:hover{background:rgba(255,149,0,.15)}.nav-section{margin-bottom:var(--spacing-sm)}.nav-section-title{padding:var(--spacing-sm) var(--spacing-md);color:var(--graphite);font-weight:600;font-size:.9em;text-transform:uppercase;letter-spacing:.5px;opacity:.7}.nav-item{display:flex;align-items:center;gap:12px;padding:var(--spacing-sm) var(--spacing-md);color:var(--deep-blue);text-decoration:none;transition:all .2s ease;cursor:pointer;border-left:4px solid transparent}.nav-item .icon{font-size:1.2em;min-width:24px}.nav-item:hover{background:rgba(255,149,0,.1);border-left-color:var(--cosmic-orange)}.nav-item.active{background:rgba(255,149,0,.15);border-left-color:var(--cosmic-orange);font-weight:600}.main-content{flex:1;padding:var(--spacing-lg);overflow-y:auto;max-height:85vh}.page-header{margin-bottom:var(--spacing-md)}.page-title{color:var(--deep-blue);font-size:2em;font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:12px}.page-subtitle{color:var(--graphite);font-size:1em;opacity:.8}.card{background:white;border-radius:var(--radius-md);padding:var(--spacing-md);box-shadow:0 8px 28px #2329461a;border:2px solid rgba(93,138,168,.15);margin-bottom:var(--spacing-md)}.card-header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-sm);border-bottom:2px solid rgba(93,138,168,.1)}.card-header h3{color:var(--deep-blue);font-size:1.4em;font-weight:600}.card-header .icon{font-size:1.5em}.form-group{margin-bottom:var(--spacing-md)}.form-label{display:block;margin-bottom:8px;color:var(--deep-blue);font-weight:500;font-size:.95em}.textarea{width:100%;padding:var(--spacing-sm);border:2px solid rgba(93,138,168,.3);border-radius:var(--radius-sm);font-family:var(--font-primary);font-size:1em;resize:vertical;min-height:120px;transition:border-color .2s,box-shadow .2s}.textarea:focus{outline:none;border-color:var(--cosmic-orange);box-shadow:0 0 0 3px #ff95001a}.input{width:100%;padding:12px var(--spacing-sm);border:2px solid rgba(93,138,168,.3);border-radius:var(--radius-sm);font-family:var(--font-primary);font-size:1em;transition:border-color .2s,box-shadow .2s}.input:focus{outline:none;border-color:var(--cosmic-orange);box-shadow:0 0 0 3px #ff95001a}.select{width:100%;padding:12px var(--spacing-sm);border:2px solid rgba(93,138,168,.3);border-radius:var(--radius-sm);font-family:var(--font-primary);font-size:1em;background:white;cursor:pointer;transition:border-color .2s}.select:focus{outline:none;border-color:var(--cosmic-orange)}.btn{background:linear-gradient(135deg,var(--cosmic-orange),#FF6B35);color:#fff;border:none;padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:1em;cursor:pointer;box-shadow:0 4px 12px #ff95004d;transition:all .2s;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #ff950066}.btn:active:not(:disabled){transform:translateY(0)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:linear-gradient(135deg,var(--light-blue),var(--info))}.btn-group{display:flex;gap:12px;flex-wrap:wrap}.result-box{background:linear-gradient(135deg,rgba(244,246,251,.5) 0%,rgba(240,242,248,.3) 100%);border-left:4px solid var(--light-blue);padding:var(--spacing-md);border-radius:var(--radius-sm);margin-top:var(--spacing-md);white-space:pre-wrap;line-height:1.7;font-size:.98em;max-height:500px;overflow-y:auto}.result-box strong{color:var(--deep-blue);font-weight:600;display:block;margin-bottom:8px}.result-box.streaming{border-left-color:var(--cosmic-orange);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.8}}.code-box{background:#1e1e1e;color:#d4d4d4;padding:var(--spacing-md);border-radius:var(--radius-sm);overflow-x:auto;font-family:var(--font-code);font-size:.9em;line-height:1.5;margin-top:var(--spacing-md);position:relative}.code-box pre{margin:0}.copy-btn{position:absolute;top:12px;right:12px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;padding:6px 12px;border-radius:4px;font-size:.85em;cursor:pointer;transition:background .2s}.copy-btn:hover{background:rgba(255,255,255,.2)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(35,41,70,.85);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--silver-white);border-radius:var(--radius-md);padding:var(--spacing-lg);max-width:450px;width:90%;box-shadow:0 24px 72px #0000004d;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.modal h2{color:var(--deep-blue);margin-bottom:var(--spacing-md);font-size:1.8em}.modal p{color:var(--graphite);margin-bottom:var(--spacing-md);line-height:1.6}.modal input{width:100%;padding:12px var(--spacing-sm);border:2px solid rgba(93,138,168,.3);border-radius:var(--radius-sm);margin-bottom:var(--spacing-md);font-size:1em;font-family:var(--font-primary);transition:border-color .2s}.modal input:focus{outline:none;border-color:var(--cosmic-orange);box-shadow:0 0 0 3px #ff95001a}.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.alert{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-sm);margin-bottom:var(--spacing-md);display:flex;align-items:center;gap:12px;font-size:.95em}.alert-info{background:rgba(74,144,226,.1);border-left:4px solid var(--info);color:var(--info)}.alert-success{background:rgba(46,139,87,.1);border-left:4px solid var(--success);color:var(--success)}.alert-warning{background:rgba(255,107,53,.1);border-left:4px solid var(--warning);color:var(--warning)}.alert-danger{background:rgba(229,57,53,.1);border-left:4px solid var(--danger);color:var(--danger)}.main-content::-webkit-scrollbar,.result-box::-webkit-scrollbar{width:8px}.main-content::-webkit-scrollbar-track,.result-box::-webkit-scrollbar-track{background:rgba(93,138,168,.1);border-radius:4px}.main-content::-webkit-scrollbar-thumb,.result-box::-webkit-scrollbar-thumb{background:rgba(93,138,168,.3);border-radius:4px}.main-content::-webkit-scrollbar-thumb:hover,.result-box::-webkit-scrollbar-thumb:hover{background:rgba(93,138,168,.5)}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-md);margin-top:var(--spacing-md)}.feature-card{background:white;border-radius:var(--radius-md);padding:var(--spacing-md);border:2px solid rgba(93,138,168,.15);transition:all .3s ease;cursor:pointer}.feature-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px #23294626;border-color:var(--cosmic-orange)}.feature-card .icon{font-size:2.5em;margin-bottom:12px}.feature-card h4{color:var(--deep-blue);margin-bottom:8px;font-size:1.2em}.feature-card p{color:var(--graphite);font-size:.9em;line-height:1.5}@media (max-width: 768px){body{padding:10px}.app-container{flex-direction:column;border-radius:var(--radius-md);min-height:auto}.sidebar{width:100%;border-right:none;border-bottom:2px solid rgba(93,138,168,.15);padding:var(--spacing-md)}.main-content{padding:var(--spacing-md);max-height:none}.page-title{font-size:1.5em}.btn-group{flex-direction:column}.btn{width:100%}.feature-grid{grid-template-columns:1fr}}.text-center{text-align:center}.mt-1{margin-top:var(--spacing-xs)}.mt-2{margin-top:var(--spacing-sm)}.mt-3{margin-top:var(--spacing-md)}.mt-4{margin-top:var(--spacing-lg)}.mb-1{margin-bottom:var(--spacing-xs)}.mb-2{margin-bottom:var(--spacing-sm)}.mb-3{margin-bottom:var(--spacing-md)}.mb-4{margin-bottom:var(--spacing-lg)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:var(--spacing-sm)}.gap-3{gap:var(--spacing-md)}