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var(--space-2);font-size:1.75rem;font-weight:var(--font-weight-semibold)}.auth-sub{margin:0;font-size:var(--text-sm);color:var(--color-text-muted)}form.auth-form{display:flex;flex-direction:column;gap:var(--space-4)}form.auth-form .field-group{display:flex;flex-direction:column;gap:var(--space-2)}form.auth-form label{font-size:var(--text-sm);font-weight:var(--font-weight-medium)}form.auth-form input{font:inherit;padding:var(--space-3) var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg-alt);color:var(--color-text);transition:border-color var(--transition-fast),background var(--transition-fast)}form.auth-form input:focus{outline:none;border-color:var(--color-primary);box-shadow:var(--color-focus-ring);background:var(--color-bg)}.grid-2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--space-4);width:100%}form.auth-form .field-group input{width:100%}.auth-card input{min-width:0}@media (max-width: 380px){.auth-card{padding:var(--space-6) var(--space-5)}}@media (max-width: 520px){.grid-2{grid-template-columns:1fr}}button.primary-btn{appearance:none;cursor:pointer;border:1px solid var(--color-primary);background:var(--color-primary);color:#fff;font:inherit;font-weight:var(--font-weight-medium);padding:var(--space-3) var(--space-5);border-radius:var(--radius-sm);display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);transition:background var(--transition-fast),box-shadow var(--transition-fast)}button.primary-btn:hover{background:var(--color-primary-hover)}button.primary-btn:focus{outline:none;box-shadow:var(--color-focus-ring)}button.primary-btn:active{transform:translateY(1px)}button.primary-btn:disabled{opacity:.6;cursor:not-allowed}.auth-alt{text-align:center;font-size:var(--text-sm);color:var(--color-text-muted)}.auth-alt a{font-weight:var(--font-weight-medium)}html{transition:background-color .3s,color .3s}body,.auth-card,input,button{transition:background-color .3s,color .3s,border-color .3s}:root{--color-bg: #0a0a0f;--color-bg-alt: #12121a;--color-surface: #16161f;--color-surface-elevated: #1a1a25;--color-border: rgba(255, 255, 255, .08);--color-border-hover: rgba(255, 255, 255, .15);--color-text: #f0f0f5;--color-text-secondary: #a0a0b0;--color-text-muted: #606075;--color-primary: #6366f1;--color-primary-hover: #818cf8;--color-accent-1: #8b5cf6;--color-accent-2: #06b6d4;--color-accent-3: #10b981;--gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);--gradient-surface: linear-gradient(180deg, #16161f 0%, #12121a 100%);--gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, .15) 0%, transparent 50%);--gradient-mesh: radial-gradient(at 40% 20%, rgba(139, 92, 246, .08) 0px, transparent 50%), radial-gradient(at 80% 0%, rgba(99, 102, 241, .06) 0px, transparent 50%), radial-gradient(at 0% 50%, rgba(6, 182, 212, .05) 0px, transparent 50%);--color-success: #10b981;--color-warning: #f59e0b;--color-danger: #ef4444;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 20px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 40px rgba(0, 0, 0, .5);--shadow-glow: 0 0 40px rgba(99, 102, 241, .2);--shadow-glow-sm: 0 0 20px rgba(99, 102, 241, .15);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 2rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--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;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: 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var(--color-border);width:42px;height:42px;border-radius:var(--radius-md);font:inherit;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:var(--color-text);flex-shrink:0;transition:all var(--transition-fast);font-size:1.2rem}.chat-icon-btn:hover{background:var(--color-surface-elevated);border-color:var(--color-border-hover);color:var(--color-primary)}.chat-icon-btn:active{transform:scale(.95)}.chat-layout{display:flex;height:100dvh;background:var(--color-bg);font-size:var(--text-base);position:relative;overflow:hidden}.chat-layout:before{content:"";position:absolute;inset:0;background:var(--gradient-mesh);pointer-events:none;z-index:0}.chat-main{flex:1;display:flex;flex-direction:column;align-items:center;height:100dvh;padding-top:calc(60px + env(safe-area-inset-top,0));position:relative;z-index:1;background:transparent}@media (min-width: 960px){.chat-main{padding-top:0}.chat-layout{flex-direction:row}}@media (max-width: 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12px;border-radius:16px}.composer-input{font-size:16px}.send-btn{width:40px;height:40px;min-width:40px;border-radius:10px}.composer-hint{display:none}}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg);position:relative;overflow:hidden;padding:var(--space-4)}.auth-container:before{content:"";position:absolute;inset:0;background:var(--gradient-mesh);pointer-events:none;z-index:0}.auth-container:after{content:"";position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(99,102,241,.15) 0%,transparent 70%);top:-200px;right:-200px;pointer-events:none;animation:float 20s ease-in-out infinite}@keyframes float{0%,to{transform:translate(0) scale(1)}50%{transform:translate(-50px,50px) scale(1.1)}}.auth-card{position:relative;z-index:1;width:100%;max-width:420px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-8);box-shadow:0 0 0 1px #ffffff0d,0 20px 50px #00000080,var(--shadow-glow-sm);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.auth-header{text-align:center;margin-bottom:var(--space-6)}.auth-logo{width:60px;height:60px;margin:0 auto var(--space-4);background:var(--gradient-primary);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;color:#fff;box-shadow:var(--shadow-glow)}.auth-logo-text{font-size:32px;font-weight:700;letter-spacing:-.02em;margin-bottom:var(--space-5);background:linear-gradient(135deg,#8b5cf6,#a855f7,#6366f1);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 0 40px rgba(139,92,246,.4)}.auth-title{font-size:var(--text-2xl);font-weight:700;letter-spacing:-.02em;margin:0 0 var(--space-2);background:linear-gradient(135deg,#fff,#ffffffb3);-webkit-background-clip:text;background-clip:text;color:transparent}.auth-subtitle{color:var(--color-text-secondary);font-size:var(--text-sm);margin:0}.auth-form{display:flex;flex-direction:column;gap:var(--space-4)}.field-group{display:flex;flex-direction:column;gap:var(--space-2)}.field-group label{font-size:var(--text-sm);font-weight:500;color:var(--color-text-secondary)}.field-group input{width:100%;padding:14px 16px;border-radius:var(--radius-md);border:1px solid var(--color-border);background:#ffffff08;color:var(--color-text);font-size:var(--text-base);font-family:inherit;transition:all .2s ease;outline:none}.field-group input::placeholder{color:var(--color-text-muted)}.field-group input:hover{border-color:var(--color-border-hover);background:#ffffff0d}.field-group input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #6366f126;background:#ffffff0d}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3)}.auth-submit{margin-top:var(--space-2);padding:14px 24px;background:var(--gradient-primary);color:#fff;font-size:var(--text-base);font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow-glow-sm);font-family:inherit}.auth-submit:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-glow)}.auth-submit:active:not(:disabled){transform:translateY(0)}.auth-submit:disabled{opacity:.6;cursor:not-allowed}.auth-footer{text-align:center;margin-top:var(--space-5);padding-top:var(--space-5);border-top:1px solid var(--color-border);font-size:var(--text-sm);color:var(--color-text-secondary)}.auth-footer a{color:var(--color-primary);text-decoration:none;font-weight:500;transition:color .2s ease}.auth-footer a:hover{color:var(--color-primary-light);text-decoration:underline}.auth-divider{display:flex;align-items:center;gap:var(--space-3);margin:var(--space-4) 0;color:var(--color-text-muted);font-size:var(--text-xs)}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--color-border)}.oauth-buttons{display:flex;flex-direction:column;gap:12px;margin-bottom:var(--space-2)}.oauth-btn{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:12px 16px;border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:500;cursor:pointer;transition:all .2s ease;font-family:inherit}.oauth-btn.google{background:#fff;border:1px solid rgba(0,0,0,.1);color:#1f1f1f}.oauth-btn.google:hover{background:#f8f8f8;box-shadow:0 2px 8px #0000001a}.oauth-btn.github{background:#24292e;border:1px solid #24292e;color:#fff}.oauth-btn.github:hover{background:#2f363d;box-shadow:0 2px 8px #0003}.oauth-btn svg{flex-shrink:0}@media (max-width: 480px){.auth-card{padding:var(--space-6);margin:var(--space-3)}.field-row{grid-template-columns:1fr}.auth-logo{width:50px;height:50px;font-size:24px}}.profile-page{min-height:100vh;background:var(--color-bg);padding:40px 20px;display:flex;justify-content:center}.profile-container{max-width:600px;width:100%}.profile-loading{display:flex;align-items:center;justify-content:center;min-height:100vh}.loading-spinner{width:40px;height:40px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%}.back-btn{display:inline-flex;align-items:center;gap:8px;background:transparent;border:1px solid var(--color-border);color:var(--color-text-muted);padding:10px 16px;border-radius:var(--radius-md);cursor:pointer;font-size:14px;transition:all var(--transition-fast);margin-bottom:32px}.back-btn:hover{border-color:var(--color-primary);color:var(--color-primary);background:#6366f11a}.profile-header{text-align:center;margin-bottom:32px}.profile-avatar-large{width:100px;height:100px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));display:flex;align-items:center;justify-content:center;font-size:36px;font-weight:700;color:#fff;margin:0 auto 20px;box-shadow:0 8px 32px #6366f14d}.profile-header h1{font-size:28px;font-weight:700;color:var(--color-text);margin-bottom:8px}.profile-email{color:var(--color-text-muted);font-size:14px}.profile-message{padding:12px 16px;border-radius:var(--radius-md);margin-bottom:20px;font-size:14px;text-align:center}.profile-message.success{background:#22c55e1a;border:1px solid rgba(34,197,94,.3);color:#22c55e}.profile-message.error{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:#ef4444}.profile-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:28px;margin-bottom:20px}.profile-section h3{font-size:16px;font-weight:600;color:var(--color-text);margin-bottom:24px;padding-bottom:12px;border-bottom:1px solid var(--color-border)}.profile-field{margin-bottom:20px}.profile-field label{display:block;font-size:12px;font-weight:500;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}.profile-field p{font-size:16px;color:var(--color-text);padding:12px 0}.profile-field input{width:100%;padding:12px 16px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:16px;color:var(--color-text);transition:all var(--transition-fast)}.profile-field input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #6366f11a}.profile-field input::placeholder{color:var(--color-text-muted)}.email-readonly{color:var(--color-text-muted)!important}.field-note{display:block;font-size:12px;color:var(--color-text-muted);margin-top:4px;font-style:italic}.profile-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px;padding-top:24px;border-top:1px solid var(--color-border)}.profile-actions button{padding:12px 24px;border-radius:var(--radius-md);font-size:14px;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:all var(--transition-fast)}.btn-edit{background:var(--color-primary);border:none;color:#fff}.btn-edit:hover{background:var(--color-primary-hover);box-shadow:0 4px 12px #6366f14d}.btn-save{background:#22c55e;border:none;color:#fff}.btn-save:hover{background:#16a34a;box-shadow:0 4px 12px #22c55e4d}.btn-save:disabled,.btn-cancel:disabled{opacity:.6;cursor:not-allowed}.btn-cancel{background:transparent;border:1px solid var(--color-border);color:var(--color-text-muted)}.btn-cancel:hover{border-color:var(--color-text-muted);background:var(--color-surface-elevated)}.profile-info-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px}.profile-info-card h3{font-size:14px;font-weight:600;color:var(--color-text);margin-bottom:16px}.info-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--color-border)}.info-item:last-child{border-bottom:none}.info-label{font-size:14px;color:var(--color-text-muted)}.info-value{font-size:14px;color:var(--color-text);font-weight:500}@media (max-width: 640px){.profile-page{padding:20px 16px}.profile-card{padding:20px}.profile-avatar-large{width:80px;height:80px;font-size:28px}.profile-header h1{font-size:24px}.profile-actions{flex-direction:column}.profile-actions button{width:100%;justify-content:center}}