:root{--brand-blue: #222878;--brand-blue-hover: #1a1f5e;--gold: #F2D599;--gold-hover: #e8c67a;--gold-muted: rgba(242, 213, 153, .15);--white: #FFFFFF;--beige-light: #F4F1EE;--beige-medium: #EAE6E1;--beige-dark: #DDD6CD;--text-primary: #1a1a2e;--text-secondary: #5a5a6e;--text-muted: #8a8a9a;--text-on-dark: #FFFFFF;--error: #d94848;--error-bg: #fef2f2;--topbar-height: 56px;--versionbar-height: 48px;--chat-width: 25%;--chat-min-width: 320px;--chat-max-width: 480px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);--shadow-overlay: 0 16px 48px rgba(0, 0, 0, .2);--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--font-family: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:var(--font-family);font-size:14px;font-weight:400;line-height:1.5;color:var(--text-primary);background:var(--white);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{font-family:var(--font-family);cursor:pointer;border:none;background:none;font-size:inherit;color:inherit;outline:none}button:focus-visible{outline:2px solid var(--gold);outline-offset:2px}input,textarea{font-family:var(--font-family);font-size:inherit;color:inherit;outline:none;border:none;background:none}textarea:focus-visible,input:focus-visible{outline:none}a{color:inherit;text-decoration:none}.app-layout{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden}.app-body{display:flex;flex:1;min-height:0;position:relative}.preview-area{flex:1;display:flex;flex-direction:column;min-width:0;position:relative}.topbar{height:var(--topbar-height);background:var(--brand-blue);display:flex;align-items:center;justify-content:space-between;padding:0 20px;flex-shrink:0;z-index:100}.topbar-brand{display:flex;align-items:center;gap:10px;color:var(--text-on-dark)}.topbar-brand-icon{width:24px;height:24px;color:var(--gold);flex-shrink:0}.topbar-brand-text{font-size:16px;font-weight:600;letter-spacing:-.01em;white-space:nowrap}.topbar-actions{display:flex;align-items:center;gap:8px}.topbar-btn{display:flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius-md);font-size:13px;font-weight:500;color:var(--text-on-dark);background:#ffffff14;transition:background var(--transition-base),color var(--transition-base);white-space:nowrap}.topbar-btn:hover{background:#ffffff29}.topbar-btn--primary{background:var(--gold);color:var(--brand-blue)}.topbar-btn--primary:hover{background:var(--gold-hover)}.topbar-btn svg{width:15px;height:15px;flex-shrink:0}.html-preview{flex:1;min-height:0;position:relative;background:var(--white)}.html-preview__iframe{width:100%;height:100%;border:none;display:block;background:var(--white)}.html-preview__placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--text-muted);-webkit-user-select:none;user-select:none}.html-preview__placeholder-icon{width:64px;height:64px;color:var(--beige-dark)}.html-preview__placeholder-text{font-size:15px;font-weight:400;text-align:center;max-width:300px;line-height:1.6}.versionbar{height:var(--versionbar-height);background:var(--white);border-top:1px solid var(--beige-medium);display:flex;align-items:center;padding:0 16px;gap:8px;flex-shrink:0;overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--beige-dark) transparent}.versionbar::-webkit-scrollbar{height:4px}.versionbar::-webkit-scrollbar-thumb{background:var(--beige-dark);border-radius:var(--radius-full)}.versionbar__label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);flex-shrink:0;margin-right:4px}.versionbar__pill{display:flex;align-items:center;justify-content:center;padding:4px 12px;border-radius:var(--radius-full);font-size:12px;font-weight:500;background:var(--beige-light);color:var(--text-secondary);transition:all var(--transition-base);flex-shrink:0;cursor:pointer;border:1.5px solid transparent}.versionbar__pill:hover{background:var(--beige-medium);color:var(--text-primary)}.versionbar__pill--active{background:var(--gold);color:var(--brand-blue);font-weight:600;border-color:var(--gold-hover)}.versionbar__viewing{display:flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0}.versionbar__viewing-label{font-size:12px;color:var(--text-muted);font-weight:500}.versionbar__resume-btn{font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-full);background:var(--brand-blue);color:var(--text-on-dark);transition:background var(--transition-base)}.versionbar__resume-btn:hover{background:var(--brand-blue-hover)}.versionbar--empty{justify-content:center;color:var(--text-muted);font-size:12px}.chat-panel{width:var(--chat-width);min-width:var(--chat-min-width);max-width:var(--chat-max-width);background:var(--beige-light);border-left:1px solid var(--beige-medium);display:flex;flex-direction:column;flex-shrink:0;position:relative;transition:width var(--transition-slow),min-width var(--transition-slow),max-width var(--transition-slow),opacity var(--transition-slow)}.chat-panel--collapsed{width:0;min-width:0;max-width:0;border-left:none;overflow:hidden;opacity:0;pointer-events:none}.chat-toggle{position:absolute;left:-36px;top:8px;width:32px;height:32px;border-radius:var(--radius-md);background:var(--beige-light);border:1px solid var(--beige-medium);display:flex;align-items:center;justify-content:center;z-index:10;transition:background var(--transition-base);color:var(--text-secondary)}.chat-toggle:hover{background:var(--beige-medium)}.chat-toggle svg{width:16px;height:16px;transition:transform var(--transition-base)}.chat-toggle--collapsed{position:fixed;right:12px;top:calc(var(--topbar-height) + 8px);left:auto;background:var(--brand-blue);border-color:var(--brand-blue);color:var(--text-on-dark);box-shadow:var(--shadow-md)}.chat-toggle--collapsed:hover{background:var(--brand-blue-hover)}.chat-header{padding:12px 16px;font-size:13px;font-weight:600;color:var(--text-primary);border-bottom:1px solid var(--beige-medium);display:flex;align-items:center;gap:8px;flex-shrink:0}.chat-header__spark{width:16px;height:16px;color:var(--gold-hover)}.chat-messages{flex:1;overflow-y:auto;padding:12px 14px;display:flex;flex-direction:column;gap:10px;scrollbar-width:thin;scrollbar-color:var(--beige-dark) transparent}.chat-messages::-webkit-scrollbar{width:4px}.chat-messages::-webkit-scrollbar-thumb{background:var(--beige-dark);border-radius:var(--radius-full)}.chat-msg{max-width:92%;padding:10px 14px;border-radius:var(--radius-lg);font-size:13px;line-height:1.55;word-break:break-word}.chat-msg--user{align-self:flex-end;background:var(--brand-blue);color:var(--text-on-dark);border-bottom-right-radius:var(--radius-sm)}.chat-msg--assistant{align-self:flex-start;background:var(--white);color:var(--text-primary);border-bottom-left-radius:var(--radius-sm);border:1px solid var(--beige-medium)}.chat-msg__images{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px}.chat-msg__image-thumb{width:48px;height:48px;border-radius:var(--radius-sm);object-fit:cover;border:1px solid rgba(255,255,255,.2)}.chat-loading{align-self:flex-start;display:flex;align-items:center;gap:6px;padding:10px 16px;background:var(--white);border:1px solid var(--beige-medium);border-radius:var(--radius-lg);border-bottom-left-radius:var(--radius-sm)}.chat-loading__dot{width:6px;height:6px;border-radius:50%;background:var(--beige-dark);animation:chat-pulse 1.2s ease-in-out infinite}.chat-loading__dot:nth-child(2){animation-delay:.15s}.chat-loading__dot:nth-child(3){animation-delay:.3s}@keyframes chat-pulse{0%,60%,to{opacity:.3;transform:scale(.85)}30%{opacity:1;transform:scale(1)}}.chat-input-area{padding:10px 14px 14px;border-top:1px solid var(--beige-medium);flex-shrink:0}.chat-input-previews{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}.chat-input-preview{position:relative;width:52px;height:52px;border-radius:var(--radius-md);overflow:hidden;border:1.5px solid var(--beige-medium)}.chat-input-preview img{width:100%;height:100%;object-fit:cover}.chat-input-preview__remove{position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;background:#0000008c;color:var(--white);display:flex;align-items:center;justify-content:center;font-size:11px;line-height:1;transition:background var(--transition-fast)}.chat-input-preview__remove:hover{background:var(--error)}.chat-input-box{display:flex;align-items:flex-end;gap:6px;background:var(--white);border:1.5px solid var(--beige-medium);border-radius:var(--radius-lg);padding:6px;transition:border-color var(--transition-base)}.chat-input-box:focus-within{border-color:var(--brand-blue)}.chat-input-box textarea{flex:1;resize:none;max-height:120px;min-height:20px;padding:6px 8px;font-size:13px;line-height:1.45;background:transparent;color:var(--text-primary)}.chat-input-box textarea::placeholder{color:var(--text-muted)}.chat-input-btn{width:32px;height:32px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background var(--transition-base),color var(--transition-base);color:var(--text-muted)}.chat-input-btn:hover{background:var(--beige-light);color:var(--text-secondary)}.chat-input-btn--send{background:var(--brand-blue);color:var(--text-on-dark)}.chat-input-btn--send:hover{background:var(--brand-blue-hover)}.chat-input-btn--send:disabled{opacity:.4;cursor:not-allowed}.chat-input-btn--send:disabled:hover{background:var(--brand-blue)}.chat-input-btn svg{width:16px;height:16px}.modal-overlay{position:fixed;inset:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:1000;animation:modal-fadein .2s ease}@keyframes modal-fadein{0%{opacity:0}to{opacity:1}}.modal{background:var(--white);border-radius:var(--radius-xl);box-shadow:var(--shadow-overlay);width:560px;max-width:calc(100vw - 40px);max-height:calc(100vh - 80px);display:flex;flex-direction:column;animation:modal-slidein .25s ease}@keyframes modal-slidein{0%{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.modal__header{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-bottom:1px solid var(--beige-medium)}.modal__title{font-size:16px;font-weight:600;color:var(--text-primary)}.modal__close{width:32px;height:32px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--text-muted);transition:background var(--transition-base),color var(--transition-base)}.modal__close:hover{background:var(--beige-light);color:var(--text-primary)}.modal__close svg{width:18px;height:18px}.modal__body{padding:20px 24px;flex:1;overflow-y:auto}.modal__tabs{display:flex;gap:0;margin-bottom:16px;border-bottom:1.5px solid var(--beige-medium)}.modal__tab{padding:8px 20px;font-size:13px;font-weight:500;color:var(--text-muted);border-bottom:2px solid transparent;margin-bottom:-1.5px;transition:all var(--transition-base)}.modal__tab:hover{color:var(--text-secondary)}.modal__tab--active{color:var(--brand-blue);border-bottom-color:var(--brand-blue);font-weight:600}.modal__textarea{width:100%;min-height:200px;padding:12px 14px;border:1.5px solid var(--beige-medium);border-radius:var(--radius-md);font-size:13px;font-family:SF Mono,Fira Code,Consolas,monospace;line-height:1.5;color:var(--text-primary);background:var(--beige-light);resize:vertical;transition:border-color var(--transition-base)}.modal__textarea:focus{border-color:var(--brand-blue);background:var(--white)}.modal__textarea::placeholder{color:var(--text-muted)}.modal__upload-zone{border:2px dashed var(--beige-dark);border-radius:var(--radius-lg);padding:40px 20px;text-align:center;cursor:pointer;transition:border-color var(--transition-base),background var(--transition-base);background:var(--beige-light)}.modal__upload-zone:hover{border-color:var(--brand-blue);background:var(--white)}.modal__upload-zone-icon{width:36px;height:36px;color:var(--beige-dark);margin:0 auto 10px}.modal__upload-zone-text{font-size:13px;color:var(--text-muted)}.modal__upload-zone-text strong{color:var(--brand-blue);font-weight:600}.modal__upload-filename{margin-top:12px;font-size:13px;font-weight:500;color:var(--text-primary);display:flex;align-items:center;gap:6px}.modal__upload-filename svg{width:14px;height:14px;color:var(--gold-hover)}.modal__footer{padding:14px 24px;border-top:1px solid var(--beige-medium);display:flex;justify-content:flex-end;gap:8px}.modal__btn{padding:8px 20px;border-radius:var(--radius-md);font-size:13px;font-weight:500;transition:all var(--transition-base)}.modal__btn--secondary{color:var(--text-secondary);background:var(--beige-light)}.modal__btn--secondary:hover{background:var(--beige-medium)}.modal__btn--primary{background:var(--brand-blue);color:var(--text-on-dark)}.modal__btn--primary:hover{background:var(--brand-blue-hover)}.modal__btn--primary:disabled{opacity:.4;cursor:not-allowed}@media(max-width:768px){.chat-panel{position:fixed;top:var(--topbar-height);right:0;bottom:0;width:100%;max-width:100%;min-width:0;z-index:50;box-shadow:var(--shadow-lg);transform:translate(0);transition:transform var(--transition-slow)}.chat-panel--collapsed{transform:translate(100%);opacity:1;width:100%;max-width:100%;pointer-events:none}.chat-toggle{left:auto;position:fixed;right:12px;top:calc(var(--topbar-height) + 8px);z-index:60}.chat-toggle--collapsed{right:12px;top:calc(var(--topbar-height) + 8px)}.topbar-btn span{display:none}.topbar-btn{padding:7px 10px}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}