.app{display:flex;min-height:100vh;background:#f5f7fa}.sidebar{width:240px;background:#1a1a2e;color:#fff;display:flex;flex-direction:column;position:fixed;height:100vh;z-index:100}.sidebar-header{padding:20px;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-header h2{margin:0;font-size:1.2rem}.sidebar-nav{flex:1;padding:10px 0;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:12px;width:100%;padding:12px 20px;background:none;border:none;color:#ffffffb3;cursor:pointer;transition:all .2s;text-align:left}.nav-item:hover{background:#ffffff0d;color:#fff}.nav-item.active{background:linear-gradient(90deg,#667eea 0%,transparent 100%);color:#fff}.sidebar-footer{padding:20px;border-top:1px solid rgba(255,255,255,.1)}.user-info{margin-bottom:12px}.user-info span{display:block;font-size:.9rem;margin-bottom:4px}.logout-btn{width:100%;padding:10px;background:#ffffff1a;border:none;border-radius:8px;color:#fff;cursor:pointer}.logout-btn:hover{background:#fff3}.main-content{flex:1;margin-left:240px;padding:30px}.page{max-width:1200px;margin:0 auto}.page h2{margin-bottom:24px;color:#1a1a2e}.hero{text-align:center;padding:60px 20px}.hero h1{font-size:3rem;margin-bottom:16px;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:1.2rem;color:#666;margin-bottom:32px}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px;padding:20px 0}.feature-card{background:#fff;border-radius:16px;padding:30px;text-align:center;cursor:pointer;transition:all .3s;box-shadow:0 2px 8px #0000001a}.feature-card:hover{transform:translateY(-5px);box-shadow:0 8px 24px #00000026}.feature-icon{font-size:3rem;margin-bottom:16px}.feature-card h3{margin-bottom:8px;color:#1a1a2e}.feature-card p{color:#666;font-size:.9rem}.custom-select{position:relative;width:100%}.select-trigger{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#fff;border:2px solid #e0e0e0;border-radius:8px;cursor:pointer}.select-trigger.open{border-color:#667eea}.arrow{font-size:.8rem;transition:transform .2s}.select-trigger.open .arrow{transform:rotate(180deg)}.select-dropdown{position:absolute;top:100%;left:0;right:0;margin-top:4px;background:#fff;border:1px solid #e0e0e0;border-radius:8px;box-shadow:0 4px 12px #0000001a;z-index:1000;max-height:300px;overflow-y:auto}.select-option{padding:12px 16px;cursor:pointer;transition:background .2s}.select-option:hover{background:#f5f5f5}.select-option.selected{background:#667eea;color:#fff}.generate-form{background:#fff;padding:24px;border-radius:12px;margin-bottom:24px;box-shadow:0 2px 8px #0000001a}.generate-form textarea{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:8px;margin-bottom:16px;resize:vertical;font-family:inherit}.generate-form textarea:focus{outline:none;border-color:#667eea}.btn-primary{padding:12px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:1rem;cursor:pointer;transition:all .3s}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-full{width:100%}.btn-large{padding:16px 32px;font-size:1.1rem}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:#fff;padding:30px;border-radius:16px;width:90%;max-width:400px;position:relative}.modal h3{margin-bottom:20px;text-align:center}.modal form{display:flex;flex-direction:column;gap:16px}.modal input{padding:12px;border:2px solid #e0e0e0;border-radius:8px}.modal input:focus{outline:none;border-color:#667eea}.close-btn{position:absolute;top:16px;right:16px;background:none;border:none;font-size:1.5rem;cursor:pointer;color:#666}.toggle-mode{text-align:center;margin-top:16px;color:#666}.toggle-mode span{color:#667eea;cursor:pointer}.video-grid,.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}.video-card,.image-card{background:#fff;border-radius:12px;padding:16px;box-shadow:0 2px 8px #0000001a}.video-preview,.image-preview{height:200px;background:#f5f5f5;border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:12px}.chat-page{display:flex;flex-direction:column;height:calc(100vh - 100px)}.chat-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.chat-messages{flex:1;overflow-y:auto;background:#fff;border-radius:12px;padding:20px;margin-bottom:20px}.message{margin-bottom:16px;padding:12px 16px;border-radius:12px;max-width:80%}.message.user{background:#667eea;color:#fff;margin-left:auto}.message.assistant{background:#f5f5f5}.chat-input{display:flex;gap:12px}.chat-input input{flex:1;padding:12px;border:2px solid #e0e0e0;border-radius:8px}.chat-input button{padding:12px 24px;background:#667eea;color:#fff;border:none;border-radius:8px;cursor:pointer}.toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%);padding:12px 24px;border-radius:8px;color:#fff;z-index:2000;animation:slideUp .3s ease}.toast-success{background:#10b981}.toast-error{background:#ef4444}.toast-info{background:#3b82f6}@keyframes slideUp{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media (max-width: 768px){.sidebar{width:200px}.main-content{margin-left:200px;padding:20px}.hero h1{font-size:2rem}}@media (max-width: 600px){.sidebar{transform:translate(-100%);transition:transform .3s}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}}*{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:#f5f5f5}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}button{cursor:pointer}