:root{--bg-deep: #06070b;--bg-surface: #0c0d14;--bg-card: rgba(15, 16, 26, .65);--bg-card-hover: rgba(20, 22, 36, .75);--bg-input: rgba(12, 13, 22, .8);--violet-400: #a78bfa;--violet-500: #8b5cf6;--violet-600: #7c3aed;--emerald-400: #34d399;--emerald-500: #10b981;--emerald-600: #059669;--cyan-400: #22d3ee;--rose-400: #fb7185;--amber-400: #fbbf24;--text-primary: #e8eaed;--text-secondary: #9ca3af;--text-muted: #6b7280;--text-accent: var(--violet-400);--border-subtle: rgba(139, 92, 246, .12);--border-focus: rgba(139, 92, 246, .45);--border-glow: rgba(16, 185, 129, .35);--gradient-brand: linear-gradient(135deg, var(--violet-500), var(--emerald-500));--gradient-glow: linear-gradient(135deg, rgba(139,92,246,.25), rgba(16,185,129,.15));--glass-blur: 16px;--glass-bg: rgba(15, 16, 26, .55);--glass-border: 1px solid rgba(139, 92, 246, .1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--shadow-card: 0 4px 24px rgba(0,0,0,.35), 0 0 0 1px rgba(139,92,246,.06);--shadow-glow: 0 0 30px rgba(139,92,246,.15), 0 0 60px rgba(16,185,129,.08);--shadow-btn: 0 0 20px rgba(139,92,246,.3), 0 4px 12px rgba(0,0,0,.4);--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--duration-fast: .2s;--duration-med: .35s;--duration-slow: .6s;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-display: "Outfit", "Inter", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--bg-deep);color:var(--text-primary);line-height:1.6;overflow-x:hidden;min-height:100vh}#bg-canvas{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:0;pointer-events:none}#app{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column}#top-bar{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#06070b99;border-bottom:1px solid var(--border-subtle);position:sticky;top:0;z-index:100}.logo-group{display:flex;align-items:center;gap:10px}.logo-icon{display:flex;animation:logo-pulse 3s ease-in-out infinite}@keyframes logo-pulse{0%,to{filter:drop-shadow(0 0 4px rgba(139,92,246,.3))}50%{filter:drop-shadow(0 0 12px rgba(139,92,246,.6))}}.logo-text{font-family:var(--font-display);font-size:1.25rem;font-weight:700;color:var(--text-primary);letter-spacing:-.02em}.logo-ai{background:var(--gradient-brand);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-left:2px}.model-badge{display:flex;align-items:center;gap:8px;padding:6px 14px;border-radius:100px;background:#76b90014;border:1px solid rgba(118,185,0,.2);font-size:.8rem;font-weight:500;color:#76b900;font-family:var(--font-mono)}.badge-dot{width:6px;height:6px;border-radius:50%;background:#76b900;animation:dot-blink 2s ease-in-out infinite}@keyframes dot-blink{0%,to{opacity:1}50%{opacity:.4}}.status-indicator{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--text-secondary)}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--emerald-500);box-shadow:0 0 8px #10b98180;transition:background var(--duration-fast),box-shadow var(--duration-fast)}.status-dot.generating{background:var(--amber-400);box-shadow:0 0 8px #fbbf2480;animation:dot-blink .8s ease-in-out infinite}.status-dot.error{background:var(--rose-400);box-shadow:0 0 8px #fb718580}#hero-section{flex:1;display:flex;align-items:center;justify-content:center;text-align:center;padding:60px 32px;min-height:calc(100vh - 64px);transition:opacity var(--duration-slow) var(--ease-out),transform var(--duration-slow) var(--ease-out)}.hero-content{max-width:640px}.hero-overline{font-family:var(--font-mono);font-size:.8rem;font-weight:500;color:var(--violet-400);text-transform:uppercase;letter-spacing:.15em;margin-bottom:16px;opacity:0;animation:fade-up .8s var(--ease-out) .2s forwards}.hero-title{font-family:var(--font-display);font-size:clamp(2rem,5vw,3.2rem);font-weight:800;line-height:1.15;letter-spacing:-.03em;margin-bottom:20px;opacity:0;animation:fade-up .8s var(--ease-out) .4s forwards}.gradient-text{background:var(--gradient-brand);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-description{font-size:1.05rem;color:var(--text-secondary);line-height:1.7;margin-bottom:36px;opacity:0;animation:fade-up .8s var(--ease-out) .6s forwards}@keyframes fade-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 32px;border:none;border-radius:var(--radius-md);background:var(--gradient-brand);color:#fff;font-family:var(--font-sans);font-size:.95rem;font-weight:600;cursor:pointer;transition:transform var(--duration-fast) var(--ease-spring),box-shadow var(--duration-fast);box-shadow:var(--shadow-btn);position:relative;overflow:hidden}.btn-primary:hover:not(:disabled){transform:translateY(-2px) scale(1.02);box-shadow:0 0 30px #8b5cf673,0 8px 20px #0006}.btn-primary:active:not(:disabled){transform:translateY(0) scale(.98)}.btn-primary:disabled{opacity:.4;cursor:not-allowed}.btn-glow{opacity:0;animation:fade-up .8s var(--ease-out) .8s forwards}.btn-glow:before{content:"";position:absolute;top:-2px;right:-2px;bottom:-2px;left:-2px;border-radius:var(--radius-md);background:var(--gradient-brand);z-index:-1;filter:blur(16px);opacity:.4;animation:glow-breathe 3s ease-in-out infinite}@keyframes glow-breathe{0%,to{opacity:.3;transform:scale(1)}50%{opacity:.6;transform:scale(1.05)}}.btn-full{width:100%}.btn-icon{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border:none;border-radius:var(--radius-sm);background:var(--gradient-brand);color:#fff;cursor:pointer;transition:transform var(--duration-fast) var(--ease-spring),box-shadow var(--duration-fast);flex-shrink:0}.btn-icon:hover:not(:disabled){transform:scale(1.08);box-shadow:0 0 16px #8b5cf666}.btn-icon:disabled{opacity:.3;cursor:not-allowed}.btn-ghost{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:1rem;padding:4px;transition:color var(--duration-fast)}.btn-ghost:hover{color:var(--text-primary)}.btn-label,.btn-loader{display:inline-flex;align-items:center;gap:8px}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#workspace{flex:1;padding:24px 32px 48px;transition:opacity var(--duration-slow) var(--ease-out)}.workspace-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:24px;max-width:1400px;margin:0 auto;min-height:calc(100vh - 120px)}.workspace-col{display:flex;flex-direction:column;gap:20px}.glass-card{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:var(--glass-border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-card);transition:border-color var(--duration-med),box-shadow var(--duration-med)}.glass-card:hover{border-color:#8b5cf62e;box-shadow:var(--shadow-card),0 0 40px #8b5cf60f}.card-header{display:flex;align-items:center;gap:10px;margin-bottom:18px;color:var(--text-secondary)}.card-header h3{font-family:var(--font-display);font-size:.95rem;font-weight:600;color:var(--text-primary)}.badge-sm{margin-left:auto;font-size:.7rem;font-family:var(--font-mono);padding:3px 10px;border-radius:100px;background:#10b9811a;border:1px solid rgba(16,185,129,.25);color:var(--emerald-400)}.dropzone{border:2px dashed var(--border-subtle);border-radius:var(--radius-md);padding:28px;text-align:center;cursor:pointer;transition:border-color var(--duration-fast),background var(--duration-fast);margin-bottom:14px}.dropzone:hover,.dropzone.drag-over{border-color:var(--violet-500);background:#8b5cf60a}.dropzone-inner{display:flex;flex-direction:column;align-items:center;gap:10px}.dropzone-icon{color:var(--text-muted);transition:color var(--duration-fast)}.dropzone:hover .dropzone-icon{color:var(--violet-400)}.dropzone-text{font-size:.9rem;color:var(--text-secondary)}.link-accent{color:var(--violet-400);text-decoration:underline;text-underline-offset:2px}.dropzone-hint{font-size:.75rem;color:var(--text-muted)}.glass-input,.glass-textarea,.glass-select{width:100%;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-sans);font-size:.9rem;line-height:1.5;outline:none;transition:border-color 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transparent}.chat-messages::-webkit-scrollbar{width:5px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:#8b5cf633;border-radius:10px}.chat-empty{display:flex;align-items:center;justify-content:center;text-align:center;padding:24px;color:var(--text-muted);font-size:.85rem;line-height:1.6}.text-muted{color:var(--text-muted)}.refine-help{padding:16px 0;color:var(--text-muted);font-size:.85rem;line-height:1.6;text-align:center}.refine-loading{display:flex;align-items:center;justify-content:center;gap:10px;padding:10px 0;color:var(--text-secondary);font-size:.85rem}.typing-dots{display:inline-flex;gap:4px}.typing-dots span{width:6px;height:6px;border-radius:50%;background:var(--emerald-400);animation:typing-bounce 1.2s ease-in-out infinite}.typing-dots span:nth-child(2){animation-delay:.15s}.typing-dots span:nth-child(3){animation-delay:.3s}.chat-bubble{padding:10px 16px;border-radius:var(--radius-md);font-size:.88rem;line-height:1.6;max-width:85%;animation:bubble-in .3s var(--ease-spring)}@keyframes bubble-in{0%{opacity:0;transform:translateY(8px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.chat-bubble.user{align-self:flex-end;background:#8b5cf626;border:1px solid rgba(139,92,246,.2);color:var(--text-primary)}.chat-bubble.agent{align-self:flex-start;background:#10b98114;border:1px solid rgba(16,185,129,.15);color:var(--text-primary)}.chat-bubble.typing{display:flex;gap:4px;padding:14px 20px}.chat-bubble.typing span{width:6px;height:6px;border-radius:50%;background:var(--emerald-400);animation:typing-bounce 1.2s ease-in-out infinite}.chat-bubble.typing span:nth-child(2){animation-delay:.15s}.chat-bubble.typing span:nth-child(3){animation-delay:.3s}@keyframes typing-bounce{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}.chat-input-row{display:flex;gap:10px;margin-top:14px}.chat-text-input{flex:1}.toast{position:fixed;bottom:32px;left:50%;transform:translate(-50%) translateY(20px);display:flex;align-items:center;gap:12px;padding:14px 20px;background:#fb71851f;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(251,113,133,.25);border-radius:var(--radius-md);color:var(--rose-400);font-size:.88rem;z-index:1000;opacity:0;transition:opacity var(--duration-fast),transform var(--duration-fast) var(--ease-out)}.toast.visible{opacity:1;transform:translate(-50%) translateY(0)}.hidden{display:none!important}@media(max-width:900px){.workspace-grid,.seo-row{grid-template-columns:1fr}#top-bar{padding:12px 16px}.model-badge{display:none}#workspace{padding:16px}}@media(max-width:600px){.hero-title{font-size:1.7rem}.hero-description{font-size:.92rem}.glass-card{padding:16px}}