:root{--bg-primary: #08080c;--bg-secondary: #0d0d14;--bg-tertiary: #13131d;--bg-card: rgba(18, 18, 30, .7);--bg-card-hover: rgba(24, 24, 40, .8);--bg-glass: rgba(255, 255, 255, .03);--bg-glass-hover: rgba(255, 255, 255, .06);--bg-input: rgba(255, 255, 255, .04);--bg-input-focus: rgba(255, 255, 255, .07);--accent-primary: #7c3aed;--accent-primary-rgb: 124, 58, 237;--accent-secondary: #a855f7;--accent-tertiary: #c084fc;--accent-glow: rgba(124, 58, 237, .25);--accent-glow-strong: rgba(124, 58, 237, .5);--color-success: #22c55e;--color-warning: #f59e0b;--color-error: #ef4444;--color-info: #3b82f6;--text-primary: #f0f0f5;--text-secondary: #9595ad;--text-tertiary: #5e5e78;--text-accent: var(--accent-tertiary);--text-inverse: #08080c;--border-subtle: rgba(255, 255, 255, .06);--border-default: rgba(255, 255, 255, .1);--border-accent: rgba(124, 58, 237, .3);--border-accent-strong: rgba(124, 58, 237, .6);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .6);--shadow-glow: 0 0 20px rgba(124, 58, 237, .15);--shadow-glow-strong: 0 0 40px rgba(124, 58, 237, .3);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--text-xs: .75rem;--text-sm: .8125rem;--text-base: .9375rem;--text-lg: 1.125rem;--text-xl: 1.375rem;--text-2xl: 1.75rem;--text-3xl: 2.25rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);--header-height: 60px;--sidebar-width: 280px;--max-content-width: 900px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse 80% 50% at 20% 10%,rgba(124,58,237,.08),transparent),radial-gradient(ellipse 60% 40% at 80% 80%,rgba(168,85,247,.05),transparent),radial-gradient(ellipse 50% 50% at 50% 50%,rgba(99,102,241,.03),transparent);pointer-events:none;z-index:0}#app{position:relative;z-index:1;min-height:100vh}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#fff3}h1,h2,h3,h4{font-weight:700;letter-spacing:-.02em;line-height:1.2}a{color:var(--accent-tertiary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--accent-secondary)}.header{position:sticky;top:0;z-index:100;height:var(--header-height);display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-6);background:#08080cd9;-webkit-backdrop-filter:blur(16px) saturate(180%);backdrop-filter:blur(16px) saturate(180%);border-bottom:1px solid var(--border-subtle)}.header-logo{display:flex;align-items:center;gap:var(--space-3);font-size:var(--text-lg);font-weight:700;color:var(--text-primary);cursor:pointer;transition:opacity var(--transition-fast)}.header-logo:hover{opacity:.85}.header-logo-icon{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border-radius:var(--radius-sm);font-size:18px}.header-actions{display:flex;align-items:center;gap:var(--space-4)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-2) var(--space-5);font-family:var(--font-sans);font-size:var(--text-sm);font-weight:600;line-height:1;border:1px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;-webkit-user-select:none;user-select:none;outline:none;min-height:38px}.btn:focus-visible{box-shadow:0 0 0 2px var(--bg-primary),0 0 0 4px var(--accent-primary)}.btn-primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;border-color:transparent;box-shadow:var(--shadow-sm),0 0 16px rgba(var(--accent-primary-rgb),.2)}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-md),0 0 24px rgba(var(--accent-primary-rgb),.35)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--bg-glass);color:var(--text-primary);border-color:var(--border-default)}.btn-secondary:hover{background:var(--bg-glass-hover);border-color:var(--border-accent)}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:transparent}.btn-ghost:hover{background:var(--bg-glass);color:var(--text-primary)}.btn-danger{background:transparent;color:var(--color-error);border-color:#ef444433}.btn-danger:hover{background:#ef44441a;border-color:#ef444466}.btn-sm{padding:var(--space-1) var(--space-3);font-size:var(--text-xs);min-height:30px}.btn-lg{padding:var(--space-3) var(--space-8);font-size:var(--text-base);min-height:46px}.btn-icon{width:36px;height:36px;padding:0;border-radius:var(--radius-md)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.input{width:100%;padding:var(--space-3) var(--space-4);font-family:var(--font-sans);font-size:var(--text-base);color:var(--text-primary);background:var(--bg-input);border:1px solid var(--border-default);border-radius:var(--radius-md);outline:none;transition:all var(--transition-fast);min-height:44px}.input::placeholder{color:var(--text-tertiary)}.input:focus{background:var(--bg-input-focus);border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(var(--accent-primary-rgb),.15)}.textarea{resize:vertical;min-height:100px;line-height:1.6}.input-label{display:block;font-size:var(--text-sm);font-weight:500;color:var(--text-secondary);margin-bottom:var(--space-2)}.card{background:var(--bg-card);-webkit-backdrop-filter:blur(12px) saturate(150%);backdrop-filter:blur(12px) saturate(150%);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:var(--space-6);transition:all var(--transition-base)}.card:hover{background:var(--bg-card-hover);border-color:var(--border-accent);box-shadow:var(--shadow-glow)}.card-interactive{cursor:pointer}.card-interactive:hover{transform:translateY(-2px)}.login-container{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:var(--space-6)}.login-card{width:100%;max-width:420px;padding:var(--space-10)}.login-header{text-align:center;margin-bottom:var(--space-8)}.login-header h1{font-size:var(--text-2xl);margin-bottom:var(--space-2);background:linear-gradient(135deg,var(--text-primary),var(--accent-tertiary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-header p{color:var(--text-tertiary);font-size:var(--text-sm)}.login-icon{width:56px;height:56px;margin:0 auto var(--space-5);display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border-radius:var(--radius-lg);font-size:28px;box-shadow:var(--shadow-glow-strong)}.form-group{margin-bottom:var(--space-5)}.login-btn{width:100%;margin-top:var(--space-2)}.login-error{padding:var(--space-3) var(--space-4);background:#ef44441a;border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-md);color:var(--color-error);font-size:var(--text-sm);margin-bottom:var(--space-4);animation:shake .4s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.dashboard{max-width:1100px;margin:0 auto;padding:var(--space-8) var(--space-6)}.dashboard-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-8);flex-wrap:wrap;gap:var(--space-4)}.dashboard-header h1{font-size:var(--text-2xl)}.dashboard-header h1 span{background:linear-gradient(135deg,var(--accent-primary),var(--accent-tertiary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--space-5)}.project-card{position:relative;padding:var(--space-6)}.project-card-name{font-size:var(--text-lg);font-weight:600;margin-bottom:var(--space-2);color:var(--text-primary)}.project-card-meta{display:flex;align-items:center;gap:var(--space-4);font-size:var(--text-xs);color:var(--text-tertiary)}.project-card-meta-item{display:flex;align-items:center;gap:var(--space-1)}.project-card-actions{position:absolute;top:var(--space-4);right:var(--space-4);display:flex;gap:var(--space-1);opacity:0;transition:opacity var(--transition-fast)}.project-card:hover .project-card-actions{opacity:1}.empty-state{text-align:center;padding:var(--space-16) var(--space-8);color:var(--text-tertiary)}.empty-state-icon{font-size:48px;margin-bottom:var(--space-4);opacity:.5}.empty-state h3{font-size:var(--text-xl);color:var(--text-secondary);margin-bottom:var(--space-2)}.empty-state p{font-size:var(--text-sm);margin-bottom:var(--space-6)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--space-6);animation:fadeIn .2s ease}.modal{width:100%;max-width:460px;padding:var(--space-8);animation:slideUp .3s ease}.modal h2{font-size:var(--text-xl);margin-bottom:var(--space-6)}.modal-actions{display:flex;justify-content:flex-end;gap:var(--space-3);margin-top:var(--space-6)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.chat-layout{display:flex;flex-direction:column;height:calc(100vh - var(--header-height))}.chat-header{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--border-subtle);background:#08080c99;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);flex-shrink:0}.chat-header-back{font-size:var(--text-lg)}.chat-header-title{font-size:var(--text-lg);font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-messages{flex:1;overflow-y:auto;padding:var(--space-6);scroll-behavior:smooth}.chat-messages-inner{max-width:var(--max-content-width);margin:0 auto;display:flex;flex-direction:column;gap:var(--space-5)}.message{display:flex;flex-direction:column;max-width:85%;animation:messageIn .35s ease}.message-user{align-self:flex-end}.message-assistant{align-self:flex-start}.message-bubble{padding:var(--space-4) var(--space-5);border-radius:var(--radius-lg);font-size:var(--text-base);line-height:1.65;word-break:break-word}.message-user .message-bubble{background:linear-gradient(135deg,var(--accent-primary),rgba(168,85,247,.85));color:#fff;border-bottom-right-radius:var(--radius-sm)}.message-assistant .message-bubble{background:var(--bg-card);border:1px solid var(--border-subtle);border-bottom-left-radius:var(--radius-sm)}.message-meta{display:flex;align-items:center;gap:var(--space-3);margin-top:var(--space-2);font-size:var(--text-xs);color:var(--text-tertiary)}.message-user .message-meta{justify-content:flex-end}.message-actions{display:flex;gap:var(--space-1)}.message-actions .btn-icon{width:28px;height:28px;font-size:var(--text-xs);opacity:0;transition:opacity var(--transition-fast)}.message:hover .message-actions .btn-icon{opacity:1}@keyframes messageIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-image{max-width:280px;max-height:200px;border-radius:var(--radius-md);margin-bottom:var(--space-3);border:1px solid var(--border-subtle);object-fit:cover}.chat-input-area{flex-shrink:0;padding:var(--space-4) var(--space-6) var(--space-6);border-top:1px solid var(--border-subtle);background:#08080ccc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.chat-input-container{max-width:var(--max-content-width);margin:0 auto}.chat-image-preview{display:flex;align-items:center;gap:var(--space-3);margin-bottom:var(--space-3);padding:var(--space-2) var(--space-3);background:var(--bg-glass);border-radius:var(--radius-md);border:1px solid var(--border-subtle);animation:slideUp .2s ease}.chat-image-preview img{width:48px;height:48px;object-fit:cover;border-radius:var(--radius-sm)}.chat-image-preview span{flex:1;font-size:var(--text-sm);color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-input-row{display:flex;align-items:flex-end;gap:var(--space-3);background:var(--bg-input);border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:var(--space-2);transition:all var(--transition-fast)}.chat-input-row:focus-within{border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(var(--accent-primary-rgb),.12)}.chat-input-container.drag-over .chat-input-row{border-color:var(--accent-primary);background:var(--bg-input-focus);box-shadow:0 0 15px var(--accent-glow-strong)}.chat-input-row textarea{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-family:var(--font-sans);font-size:var(--text-base);padding:var(--space-2) var(--space-3);resize:none;line-height:1.5;max-height:150px;min-height:24px}.chat-input-row textarea::placeholder{color:var(--text-tertiary)}.chat-input-actions{display:flex;align-items:center;gap:var(--space-1);padding-bottom:var(--space-1)}.upload-btn{position:relative;overflow:hidden}.upload-btn input[type=file]{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.style-selector{display:flex;gap:var(--space-1);padding:var(--space-2) var(--space-1);background:#ffffff05;border-radius:var(--radius-lg);border:1px solid var(--border-subtle);margin-bottom:var(--space-2)}.style-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:var(--space-1);padding:var(--space-2) var(--space-3);border:none;background:transparent;color:var(--text-tertiary);font-size:var(--text-xs);font-family:var(--font-main);font-weight:500;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.style-btn:hover{color:var(--text-secondary);background:#ffffff0a}.style-btn.active{color:var(--text-primary);background:#7c3aed26;border:1px solid rgba(124,58,237,.3);box-shadow:0 0 12px #7c3aed1a}.style-btn-icon{font-size:var(--text-sm)}.style-btn-label{font-size:var(--text-xs)}.style-badge{display:inline-flex;align-items:center;gap:2px;padding:1px var(--space-2);font-size:10px;font-weight:600;color:var(--accent-tertiary);background:#7c3aed1a;border:1px solid rgba(124,58,237,.15);border-radius:var(--radius-full);letter-spacing:.02em}.style-hint{padding:var(--space-2) var(--space-3);font-size:var(--text-xs);color:var(--text-secondary);background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:var(--radius-md)}.usage-widget{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);background:var(--bg-glass);border-radius:var(--radius-full);border:1px solid var(--border-subtle);font-size:var(--text-xs);color:var(--text-secondary);cursor:default;transition:all var(--transition-fast)}.usage-widget:hover{border-color:var(--border-accent);background:var(--bg-glass-hover)}.usage-bar-container{width:80px;height:6px;background:#ffffff14;border-radius:var(--radius-full);overflow:hidden}.usage-bar{height:100%;border-radius:var(--radius-full);background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));transition:width var(--transition-slow)}.usage-bar.warning{background:linear-gradient(90deg,var(--color-warning),var(--color-error))}.usage-bar.critical{background:var(--color-error)}.usage-text{white-space:nowrap}.usage-dropdown{position:absolute;top:calc(100% + var(--space-2));right:0;min-width:300px;padding:var(--space-4);z-index:200;animation:slideUp .2s ease}.usage-dropdown h4{font-size:var(--text-sm);font-weight:600;margin-bottom:var(--space-3);color:var(--text-primary)}.usage-account{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) 0}.usage-account+.usage-account{border-top:1px solid var(--border-subtle)}.usage-account-label{flex:1;font-size:var(--text-xs);color:var(--text-secondary)}.usage-account-bar{width:100px;height:4px;background:#ffffff0f;border-radius:var(--radius-full);overflow:hidden}.usage-account-bar-fill{height:100%;border-radius:var(--radius-full);background:var(--accent-primary);transition:width var(--transition-slow)}.usage-account-value{font-size:var(--text-xs);color:var(--text-tertiary);min-width:40px;text-align:right}.md-content h1,.md-content h2,.md-content h3,.md-content h4{margin-top:var(--space-4);margin-bottom:var(--space-2);color:var(--text-primary)}.md-content h3{font-size:var(--text-base)}.md-content p{margin-bottom:var(--space-3)}.md-content ul,.md-content ol{padding-left:var(--space-5);margin-bottom:var(--space-3)}.md-content li{margin-bottom:var(--space-1)}.md-content code{font-family:var(--font-mono);font-size:.85em;padding:2px 6px;background:#ffffff0f;border-radius:4px;color:var(--accent-tertiary)}.md-content pre{background:#0006;border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:var(--space-4);margin-bottom:var(--space-3);overflow-x:auto}.md-content pre code{background:none;padding:0;font-size:var(--text-sm);color:var(--text-primary)}.md-content strong{color:var(--text-primary);font-weight:600}.md-content em{color:var(--text-secondary)}.spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.2);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-dots{display:inline-flex;gap:4px;padding:var(--space-4) var(--space-5)}.loading-dots span{width:8px;height:8px;border-radius:50%;background:var(--accent-primary);animation:dot-pulse 1.4s ease-in-out infinite}.loading-dots span:nth-child(2){animation-delay:.2s}.loading-dots span:nth-child(3){animation-delay:.4s}@keyframes dot-pulse{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}.toast-container{position:fixed;bottom:var(--space-6);right:var(--space-6);z-index:2000;display:flex;flex-direction:column;gap:var(--space-3)}.toast{padding:var(--space-3) var(--space-5);background:var(--bg-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--border-subtle);border-radius:var(--radius-md);font-size:var(--text-sm);color:var(--text-primary);box-shadow:var(--shadow-lg);animation:slideUp .3s ease;max-width:360px}.toast-success{border-color:#22c55e4d}.toast-error{border-color:#ef44444d;color:var(--color-error)}@media(max-width:768px){:root{--header-height: 54px}.header{padding:0 var(--space-4)}.dashboard{padding:var(--space-5) var(--space-4)}.projects-grid{grid-template-columns:1fr}.chat-messages{padding:var(--space-4)}.chat-input-area{padding:var(--space-3) var(--space-4) var(--space-4)}.message{max-width:92%}.usage-widget{font-size:10px}.usage-bar-container{width:50px}.modal{max-width:100%;padding:var(--space-6)}}@media(max-width:480px){.dashboard-header{flex-direction:column;align-items:flex-start}.login-card{padding:var(--space-6)}}