:root{--primary-color: #7c3aed;--primary-light: #a855f7;--primary-dark: #5b21b6;--primary-gradient: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);--secondary-color: #06b6d4;--secondary-light: #22d3ee;--secondary-dark: #0891b2;--secondary-gradient: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);--accent-color: #f59e0b;--success-color: #10b981;--warning-color: #f59e0b;--error-color: #ef4444;--background: #fefefe;--surface: #ffffff;--surface-alt: #f8fafc;--surface-elevated: #ffffff;--border: #e2e8f0;--border-light: #f1f5f9;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--text-light: #cbd5e1;--dark-background: #0f172a;--dark-surface: #1e293b;--dark-surface-alt: #334155;--dark-border: #475569;--dark-text-primary: #f1f5f9;--dark-text-secondary: #cbd5e1;--container-max-width: 1200px;--border-radius: 12px;--border-radius-sm: 8px;--border-radius-lg: 16px;--border-radius-xl: 20px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--font-size-5xl: 3rem;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease}.landing-container{min-height:100vh;background:var(--background)}.hero-section{background:linear-gradient(135deg,#7c3aed,#a855f7,#06b6d4);min-height:100vh;display:flex;flex-direction:column;position:relative;overflow:hidden}.hero-section:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 70%,rgba(255,255,255,.1) 0%,transparent 50%),radial-gradient(circle at 70% 30%,rgba(255,255,255,.08) 0%,transparent 50%);pointer-events:none}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;position:relative;z-index:10}.nav-brand{display:flex;align-items:center;gap:.75rem;color:#fff;font-weight:700;font-size:var(--font-size-xl)}.nav-logo{font-size:1.75rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))}.nav-actions{display:flex;gap:1rem;align-items:center}.hero-content{flex:1;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:4rem;padding:2rem;max-width:var(--container-max-width);margin:0 auto;position:relative;z-index:5}.hero-text{color:#fff}.hero-title .title-main{display:block;font-size:var(--font-size-5xl);font-weight:800;line-height:1.1;margin-bottom:.5rem;filter:drop-shadow(0 2px 8px rgba(0,0,0,.3))}.hero-title .title-sub{display:block;font-size:var(--font-size-xl);font-weight:400;opacity:.9;margin-bottom:1.5rem}.hero-description{font-size:var(--font-size-lg);line-height:1.7;opacity:.95;margin-bottom:2rem}.hero-description strong{background:#fff3;padding:.2rem .5rem;border-radius:var(--border-radius-sm);font-weight:600}.hero-actions{display:flex;gap:1rem;flex-wrap:wrap}.hero-visual{display:flex;align-items:center;justify-content:center}.hero-illustration{position:relative;width:400px;height:400px}.floating-elements{position:relative;width:100%;height:100%}.floating-elements .element{position:absolute;font-size:3rem;filter:drop-shadow(0 4px 8px rgba(0,0,0,.2));animation:float 6s ease-in-out infinite}.element-1{top:10%;left:20%;animation-delay:0s}.element-2{top:20%;right:15%;animation-delay:1s}.element-3{bottom:30%;left:10%;animation-delay:2s}.element-4{bottom:20%;right:20%;animation-delay:3s}.element-5{top:50%;left:50%;transform:translate(-50%,-50%);font-size:4rem;animation-delay:.5s}.element-6{top:60%;right:30%;animation-delay:4s}@keyframes float{0%,to{transform:translateY(0) rotate(0)}33%{transform:translateY(-20px) rotate(5deg)}66%{transform:translateY(10px) rotate(-3deg)}}.features-section{padding:6rem 2rem;background:var(--surface-alt)}.section-container{max-width:var(--container-max-width);margin:0 auto}.section-header{text-align:center;margin-bottom:4rem}.section-title{font-size:var(--font-size-3xl);font-weight:700;color:var(--text-primary);margin-bottom:1rem}.section-description{font-size:var(--font-size-lg);color:var(--text-secondary);max-width:600px;margin:0 auto;line-height:1.6}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem}.feature-card{background:var(--surface);padding:2rem;border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md);transition:all var(--transition-base);border:1px solid var(--border-light)}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}.feature-icon{font-size:3rem;margin-bottom:1rem;display:block}.feature-title{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin-bottom:.75rem}.feature-description{color:var(--text-secondary);line-height:1.6}.communities-section{padding:6rem 2rem;background:var(--surface)}.communities-preview{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:3rem}.community-card{background:var(--surface-alt);padding:1.5rem;border-radius:var(--border-radius);text-align:center;transition:all var(--transition-base);border:1px solid var(--border-light)}.community-card:hover{background:var(--surface);box-shadow:var(--shadow-md);transform:translateY(-2px)}.community-icon{font-size:2.5rem;margin-bottom:1rem;display:block}.community-card h3{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin-bottom:.5rem}.community-card p{color:var(--text-secondary);font-size:var(--font-size-sm)}.communities-cta{text-align:center}.cta-section{padding:6rem 2rem;background:var(--primary-gradient);text-align:center;color:#fff}.cta-container{max-width:800px;margin:0 auto}.cta-title{font-size:var(--font-size-4xl);font-weight:700;margin-bottom:1rem;filter:drop-shadow(0 2px 8px rgba(0,0,0,.2))}.cta-description{font-size:var(--font-size-lg);margin-bottom:2rem;opacity:.95;line-height:1.6}.footer{background:var(--text-primary);color:var(--text-light);padding:3rem 2rem 1.5rem}.footer-container{max-width:var(--container-max-width);margin:0 auto}.footer-content{display:grid;grid-template-columns:1fr 2fr;gap:3rem;margin-bottom:2rem}.footer-brand{display:flex;flex-direction:column;gap:1rem}.footer-logo{display:flex;align-items:center;gap:.75rem;font-size:var(--font-size-xl);font-weight:700;color:#fff}.footer-tagline{color:var(--text-light);font-size:var(--font-size-sm)}.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}.footer-group h4{color:#fff;font-weight:600;margin-bottom:1rem}.footer-group a{display:block;color:var(--text-light);text-decoration:none;margin-bottom:.5rem;transition:color var(--transition-fast)}.footer-group a:hover{color:var(--primary-light)}.footer-bottom{border-top:1px solid var(--dark-border);padding-top:1.5rem;text-align:center}.footer-copyright{color:var(--text-light);font-size:var(--font-size-sm)}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;background:linear-gradient(135deg,#667eea,#764ba2);padding:1rem;overflow:hidden}.auth-background{position:absolute;inset:0;opacity:.1}.auth-background-pattern{width:100%;height:100%;background-image:radial-gradient(circle at 20% 50%,rgba(120,119,198,.3) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(255,255,255,.15) 0%,transparent 50%),radial-gradient(circle at 40% 80%,rgba(120,58,237,.2) 0%,transparent 50%);animation:float 20s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.auth-card{width:100%;max-width:480px;background:#fffffff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:24px;box-shadow:0 25px 50px #00000026,0 0 0 1px #fff3;border:1px solid rgba(255,255,255,.2);padding:2.5rem;position:relative;z-index:1}.auth-header{text-align:center;margin-bottom:2rem}.logo-container{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:1.5rem}.logo-image{width:64px;height:64px;border-radius:16px;box-shadow:0 8px 32px #783aed4d}.logo-text .brand-name{font-size:2rem;font-weight:700;background:linear-gradient(135deg,#7c3aed,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0;line-height:1.2}.logo-text .brand-tagline{font-size:.95rem;color:#64748b;margin:0;font-weight:500}.welcome-message{margin-bottom:2rem}.auth-title{font-size:1.75rem;font-weight:700;color:#1e293b;margin-bottom:.5rem}.auth-subtitle{color:#64748b;font-size:1rem;line-height:1.6;margin:0}.social-login-section{margin-bottom:1.5rem}.social-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:.75rem;padding:1rem 1.5rem;border:2px solid #e2e8f0;background:#fff;border-radius:12px;font-weight:600;color:#374151;font-size:1rem;cursor:pointer;transition:all .2s;position:relative;overflow:hidden}.social-btn:hover{border-color:#cbd5e1;background:#f8fafc;transform:translateY(-1px);box-shadow:0 4px 12px #0000001a}.social-btn:active{transform:translateY(0)}.google-btn:hover{border-color:#4285f4;background:linear-gradient(145deg,#fff,#f8fafc)}.social-icon{width:20px;height:20px;flex-shrink:0}.divider{position:relative;text-align:center;margin:2rem 0}.divider:before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,#e2e8f0,transparent)}.divider-text{background:#fffffff2;padding:0 1rem;color:#94a3b8;font-weight:500;font-size:.875rem}.demo-section{margin-bottom:1.5rem;border:1px solid #e2e8f0;border-radius:12px;overflow:hidden;background:#f8fafc}.demo-toggle-btn{width:100%;padding:1rem;background:none;border:none;display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-weight:500;color:#475569;transition:all .2s}.demo-toggle-btn:hover{background:#f1f5f9;color:#334155}.demo-toggle-btn .demo-icon{margin-right:.5rem}.toggle-arrow{transition:transform .2s;font-size:.75rem;color:#94a3b8}.demo-accounts{border-top:1px solid #e2e8f0;padding:1rem;background:#fff}.demo-account{margin-bottom:.75rem}.demo-account:last-child{margin-bottom:0}.demo-label{font-size:.75rem;font-weight:600;color:#7c3aed;margin-bottom:.25rem;text-transform:uppercase;letter-spacing:.5px}.demo-fill-btn{width:100%;display:grid;grid-template-columns:1fr 1fr auto;gap:.5rem;padding:.75rem;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;cursor:pointer;transition:all .2s;font-size:.875rem}.demo-fill-btn:hover{background:#f1f5f9;border-color:#cbd5e1;transform:translateY(-1px)}.demo-email{color:#475569;font-weight:500}.demo-password{color:#94a3b8;font-family:monospace}.demo-use{color:#7c3aed;font-weight:600;font-size:.75rem}.auth-tabs{display:flex;background:#f1f5f9;border-radius:12px;padding:4px;margin-bottom:2rem}.tab-btn{flex:1;padding:.75rem 1rem;background:transparent;border:none;font-size:.875rem;font-weight:500;color:#64748b;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:.5rem;border-radius:8px}.tab-btn:hover{color:#374151}.tab-btn.active{background:#fff;color:#7c3aed;font-weight:600;box-shadow:0 2px 8px #0000001a}.tab-icon{font-size:.875rem}.tab-content{margin-top:1.5rem}.auth-form{display:flex;flex-direction:column;gap:1.25rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-label{font-weight:500;color:#374151;font-size:.875rem}.input-wrapper{position:relative;display:flex;align-items:center}.input-icon{position:absolute;left:12px;font-size:.875rem;color:#94a3b8;z-index:1}.form-input{width:100%;padding:.875rem 1rem .875rem 2.5rem;border:2px solid #e2e8f0;border-radius:12px;font-size:1rem;transition:all .2s;background:#fff}.form-input:focus{outline:none;border-color:#7c3aed;box-shadow:0 0 0 3px #7c3aed1a}.form-input::placeholder{color:#94a3b8}.password-toggle{position:absolute;right:12px;background:none;border:none;cursor:pointer;padding:.25rem;color:#94a3b8;z-index:1}.password-toggle:hover{color:#64748b}.password-strength{display:flex;align-items:center;gap:.5rem;margin-top:.25rem}.strength-bar{flex:1;height:4px;border-radius:2px;background:#e2e8f0;transition:all .3s}.strength-bar.strength-weak{background:#ef4444;width:25%}.strength-bar.strength-medium{background:#f59e0b;width:50%}.strength-bar.strength-good{background:#06b6d4;width:75%}.strength-bar.strength-strong{background:#10b981;width:100%}.strength-text{font-size:.75rem;color:#64748b;font-weight:500;min-width:50px}.form-options{display:flex;justify-content:space-between;align-items:center}.remember-me{display:flex;align-items:center;gap:.5rem;cursor:pointer}.remember-me input[type=checkbox]{display:none}.checkmark{width:16px;height:16px;border:2px solid #e2e8f0;border-radius:4px;position:relative;transition:all .2s}.remember-me input[type=checkbox]:checked+.checkmark{background:#7c3aed;border-color:#7c3aed}.remember-me input[type=checkbox]:checked+.checkmark:after{content:"✓";position:absolute;color:#fff;font-size:10px;top:50%;left:50%;transform:translate(-50%,-50%)}.remember-text{font-size:.875rem;color:#64748b}.forgot-password{font-size:.875rem;color:#7c3aed;text-decoration:none;font-weight:500}.forgot-password:hover{text-decoration:underline}.checkbox-group{margin-top:.5rem}.checkbox-label{display:flex;align-items:flex-start;gap:.75rem;cursor:pointer;line-height:1.4}.checkbox-label input[type=checkbox]{display:none}.custom-checkbox{width:18px;height:18px;border:2px solid #e2e8f0;border-radius:4px;position:relative;flex-shrink:0;margin-top:1px;transition:all .2s}.checkbox-label input[type=checkbox]:checked+.custom-checkbox{background:#7c3aed;border-color:#7c3aed}.checkbox-label input[type=checkbox]:checked+.custom-checkbox:after{content:"✓";position:absolute;color:#fff;font-size:12px;top:50%;left:50%;transform:translate(-50%,-50%)}.checkbox-text{font-size:.875rem;color:#64748b;line-height:1.4}.link-primary{color:#7c3aed;text-decoration:none;font-weight:500}.link-primary:hover{text-decoration:underline}.btn{padding:.875rem 1.5rem;border:none;border-radius:12px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:.5rem;position:relative;overflow:hidden}.btn-primary{background:linear-gradient(135deg,#7c3aed,#a855f7);color:#fff;box-shadow:0 4px 12px #7c3aed4d}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #7c3aed66}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.7;cursor:not-allowed;transform:none}.btn-full{width:100%}.btn-icon{font-size:1rem}.auth-message{padding:1rem;border-radius:8px;margin-bottom:1rem;font-size:.875rem;font-weight:500}.message-success{background:#dcfce7;color:#166534;border:1px solid #bbf7d0}.message-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.auth-footer{text-align:center;padding-top:1.5rem;border-top:1px solid #f1f5f9;margin-top:1.5rem}.footer-text{color:#64748b;font-size:.875rem;margin-bottom:1rem;display:flex;align-items:center;justify-content:center;gap:.5rem}.footer-icon{font-size:1rem}.footer-links{display:flex;justify-content:center;gap:1rem}.footer-link{color:#7c3aed;text-decoration:none;font-size:.875rem;font-weight:500}.footer-link:hover{text-decoration:underline}@media (max-width: 640px){.auth-card{padding:2rem 1.5rem;margin:1rem;border-radius:20px}.logo-container{flex-direction:column;gap:.75rem}.logo-image{width:56px;height:56px}.auth-title{font-size:1.5rem}.social-btn{padding:.875rem 1rem}.form-options{flex-direction:column;gap:.75rem;align-items:stretch}.footer-links{flex-direction:column;gap:.5rem}}.form-input::placeholder{color:var(--text-muted)}.form-footer{text-align:center;margin-top:1rem}.link-subtle{color:var(--text-secondary);text-decoration:none;font-size:var(--font-size-sm);transition:color var(--transition-fast)}.link-subtle:hover{color:var(--primary-color);text-decoration:underline}.auth-footer{padding:2rem 2.5rem;background:var(--surface-alt);border-top:1px solid var(--border-light)}.footer-branding{text-align:center;margin-bottom:1.5rem}.footer-text{display:flex;align-items:center;justify-content:center;gap:.5rem;color:var(--text-secondary);font-size:var(--font-size-sm);margin:0}.footer-icon{font-size:1.25rem;color:var(--primary-color)}.footer-links{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap}.footer-link{color:var(--text-muted);text-decoration:none;font-size:var(--font-size-xs);transition:color var(--transition-fast)}.footer-link:hover{color:var(--primary-color)}.auth-message{margin:-1rem 2.5rem 1.5rem;padding:1rem;border-radius:var(--border-radius);font-size:var(--font-size-sm);font-weight:500}*{box-sizing:border-box}body{margin:0;padding:0;font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.6;color:var(--text-primary);background-color:var(--background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{min-height:100vh}.container{max-width:var(--container-max-width);margin:0 auto;padding:0 1rem}.app-layout{min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%);color:#fff;padding:1rem 0;box-shadow:var(--shadow-md);position:sticky;top:0;z-index:1000}.header-content{display:flex;align-items:center;justify-content:space-between;gap:2rem}.logo h1{margin:0;font-size:var(--font-size-2xl);font-weight:700;display:flex;align-items:center;gap:.5rem}.tagline{margin:0;font-size:var(--font-size-sm);opacity:.9}.welcome-container{min-height:100vh;background:linear-gradient(135deg,#7c3aed,#a855f7,#06b6d4);display:flex;align-items:center;justify-content:center;padding:2rem;position:relative}.welcome-container:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 25% 75%,rgba(255,255,255,.1) 0%,transparent 50%),radial-gradient(circle at 75% 25%,rgba(255,255,255,.08) 0%,transparent 50%);pointer-events:none}.welcome-card{background:var(--surface);border-radius:var(--border-radius-xl);box-shadow:var(--shadow-xl);overflow:hidden;width:100%;max-width:900px;position:relative;z-index:5;max-height:90vh;overflow-y:auto}.welcome-header{padding:3rem 2.5rem 2rem;text-align:center;background:linear-gradient(135deg,#7c3aed0d,#06b6d40d);border-bottom:1px solid var(--border-light)}.welcome-title{font-size:var(--font-size-3xl);font-weight:700;color:var(--text-primary);margin:1.5rem 0 0}.welcome-content{padding:2.5rem}.welcome-message{text-align:center;margin-bottom:3rem;padding:2rem;background:linear-gradient(135deg,#10b9810d,#7c3aed0d);border-radius:var(--border-radius-lg);border:1px solid rgba(16,185,129,.1)}.message-icon{font-size:3rem;margin-bottom:1rem}.welcome-message h2{font-size:var(--font-size-2xl);font-weight:600;color:var(--text-primary);margin:0 0 1rem}.message-text{color:var(--text-secondary);font-size:var(--font-size-lg);line-height:1.6;max-width:600px;margin:0 auto}.welcome-steps{margin-bottom:3rem}.welcome-steps h3{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0 0 1.5rem;text-align:center}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}.step-card{background:var(--surface-alt);padding:2rem 1.5rem;border-radius:var(--border-radius-lg);text-align:center;border:1px solid var(--border-light);transition:all var(--transition-base)}.step-card:hover{background:var(--surface);box-shadow:var(--shadow-md);transform:translateY(-2px)}.step-icon{font-size:2.5rem;margin-bottom:1rem;display:block}.step-card h4{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin:0 0 .5rem}.step-card p{color:var(--text-secondary);font-size:var(--font-size-sm);margin:0 0 1.5rem;line-height:1.5}.welcome-features{margin-bottom:3rem}.welcome-features h3{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0 0 1.5rem;text-align:center}.features-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1rem}.feature-item{display:flex;align-items:flex-start;gap:1rem;padding:1rem;background:var(--surface-alt);border-radius:var(--border-radius);border:1px solid var(--border-light)}.feature-icon{font-size:1.5rem;flex-shrink:0}.feature-text{color:var(--text-secondary);font-size:var(--font-size-sm);line-height:1.5}.feature-text strong{color:var(--text-primary);font-weight:600}.welcome-cta{text-align:center;padding:2rem;background:linear-gradient(135deg,#7c3aed08,#06b6d408);border-radius:var(--border-radius-lg);border:1px solid rgba(124,58,237,.1)}.welcome-cta h3{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0 0 1.5rem}.cta-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.welcome-footer{padding:2rem 2.5rem;background:var(--surface-alt);border-top:1px solid var(--border-light);text-align:center}.welcome-footer .footer-text{display:flex;align-items:center;justify-content:center;gap:.5rem;color:var(--text-secondary);font-size:var(--font-size-sm);margin:0 0 1rem}.welcome-footer .footer-icon{font-size:1.25rem;color:var(--primary-color)}.welcome-footer .footer-links{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap}.welcome-footer .footer-link{color:var(--text-muted);text-decoration:none;font-size:var(--font-size-xs);transition:color var(--transition-fast)}.welcome-footer .footer-link:hover{color:var(--primary-color)}.main-nav{display:flex;align-items:center;gap:1rem}.nav-link{color:#fff;text-decoration:none;padding:.5rem 1rem;border-radius:var(--border-radius-sm);transition:var(--transition);display:flex;align-items:center;gap:.5rem;font-weight:500}.nav-link:hover{background:#fff3;transform:translateY(-1px)}.nav-icon{font-size:var(--font-size-lg)}.app-main{flex:1;padding:2rem 0}.app-footer{background:var(--surface-alt);border-top:1px solid var(--border);padding:2rem 0;margin-top:4rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.footer-section h3{color:var(--primary-color);margin-bottom:1rem;font-size:var(--font-size-lg)}.footer-section ul{list-style:none;padding:0;margin:0}.footer-section li{margin-bottom:.5rem}.footer-section a{color:var(--text-secondary);text-decoration:none;transition:var(--transition)}.footer-section a:hover{color:var(--primary-color)}.footer-note{color:var(--text-muted);font-style:italic;margin:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border:none;border-radius:var(--border-radius-sm);font-size:var(--font-size-base);font-weight:600;text-decoration:none;cursor:pointer;transition:var(--transition);line-height:1}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-light) 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select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #7c3aed1a}.form-group small{display:block;margin-top:.25rem;color:var(--text-muted);font-size:var(--font-size-sm)}.checkbox-group{display:flex;align-items:flex-start;gap:.75rem}.checkbox-label{display:flex!important;align-items:flex-start;gap:.75rem;cursor:pointer;margin-bottom:0!important}.checkbox-label input[type=checkbox]{width:auto!important;margin:0}.checkbox-text{color:var(--text-secondary);line-height:1.5}.message{padding:1rem;border-radius:var(--border-radius-sm);margin-bottom:1rem;font-weight:500}.message-success{background:#10b9811a;color:var(--success-color);border:1px solid rgba(16,185,129,.2)}.message-error{background:#ef44441a;color:var(--error-color);border:1px solid rgba(239,68,68,.2)}.message-warning{background:#f59e0b1a;color:var(--warning-color);border:1px solid rgba(245,158,11,.2)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--shadow-sm);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.loading{display:flex;align-items:center;justify-content:center;padding:2rem;color:var(--text-muted);font-style:italic}.hidden{display:none!important}.text-center{text-align:center}.text-muted{color:var(--text-muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.demo-access{background:var(--bg-secondary);border-radius:.75rem;padding:1.5rem;margin-bottom:2rem;border:2px dashed var(--primary)}.demo-header h3{margin:0 0 .5rem;color:var(--primary);font-size:1.1rem}.demo-header p{margin:0 0 1rem;color:var(--text-muted);font-size:.875rem}.demo-accounts{display:flex;flex-direction:column;gap:.75rem}.demo-btn{background:#fff;border:2px solid var(--border);border-radius:.5rem;padding:1rem;text-align:left;cursor:pointer;transition:all .2s ease;display:flex;flex-direction:column;gap:.25rem}.demo-btn:hover{border-color:var(--primary);background:var(--primary);color:#fff;transform:translateY(-1px)}.demo-btn small{font-size:.75rem;opacity:.8}.demo-divider{text-align:center;margin:1.5rem 0;position:relative}.demo-divider:before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:var(--border)}.demo-divider span{background:var(--card-bg);padding:0 1rem;color:var(--text-muted);font-size:.875rem}.auth-message{padding:.75rem 1rem;border-radius:.5rem;margin-bottom:1rem;font-size:.875rem;font-weight:500}.tab-content{position:relative;min-height:400px}.tab-panel{position:absolute;top:0;left:0;right:0;opacity:0;transform:translateY(10px);transition:all .3s ease;pointer-events:none}.tab-panel.active{opacity:1;transform:translateY(0);pointer-events:all}@media (max-width: 768px){.header-content{flex-direction:column;gap:1rem}.main-nav{flex-wrap:wrap;justify-content:center}.footer-content{grid-template-columns:1fr;text-align:center}.container{padding:0 .5rem}}@media (prefers-color-scheme: dark){:root{--background: var(--dark-background);--surface: var(--dark-surface);--surface-alt: var(--dark-surface-alt);--border: var(--dark-border);--text-primary: var(--dark-text-primary);--text-secondary: var(--dark-text-secondary)}}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.vanilla:hover{filter:drop-shadow(0 0 2em #f7df1eaa)}.card{padding:2em}.read-the-docs{color:#888}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%);padding:2rem}.auth-card{background:var(--surface);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-lg);max-width:500px;width:100%;overflow:hidden}.auth-header{padding:2rem 2rem 1rem;text-align:center;background:var(--surface-alt)}.auth-header h1{margin:0 0 1rem;font-size:var(--font-size-3xl);color:var(--primary-color)}.welcome-text{margin:0;color:var(--text-secondary);line-height:1.6}.auth-tabs{display:flex;background:var(--surface-alt);border-bottom:1px solid var(--border)}.tab-btn{flex:1;padding:1rem;background:transparent;border:none;font-size:var(--font-size-base);font-weight:600;color:var(--text-secondary);cursor:pointer;transition:var(--transition);border-bottom:3px solid transparent}.tab-btn.active{color:var(--primary-color);border-bottom-color:var(--primary-color)}.tab-btn:hover{background:var(--surface)}.tab-content{padding:2rem}.tab-panel{display:none}.tab-panel.active{display:block}.auth-form{margin-bottom:2rem}.auth-info{display:grid;gap:1.5rem;margin-top:2rem}.info-box{padding:1.5rem;background:var(--surface-alt);border-radius:var(--border-radius);border-left:4px solid var(--primary-color)}.info-box h3{margin:0 0 1rem;font-size:var(--font-size-lg);color:var(--primary-color)}.info-box ul{margin:0;padding-left:1.2rem;color:var(--text-secondary)}.info-box li{margin-bottom:.5rem}.home-page{max-width:1000px;margin:0 auto}.welcome-section{text-align:center;margin-bottom:3rem;padding:2rem;background:linear-gradient(135deg,#7c3aed1a,#06b6d41a);border-radius:var(--border-radius-lg)}.welcome-section h2{font-size:var(--font-size-3xl);margin:0 0 1rem;color:var(--primary-color)}.welcome-text{font-size:var(--font-size-lg);color:var(--text-secondary);max-width:600px;margin:0 auto;line-height:1.7}.quick-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:3rem}.action-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--border-radius);padding:1.5rem;text-align:center;transition:var(--transition);box-shadow:var(--shadow-sm)}.action-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}.card-icon{font-size:2.5rem;margin-bottom:1rem}.action-card h3{margin:0 0 .5rem;font-size:var(--font-size-xl);color:var(--primary-color)}.action-card p{margin:0 0 1.5rem;color:var(--text-secondary);line-height:1.6}.recent-activity,.community-highlights{margin-bottom:3rem}.recent-activity h3,.community-highlights h3{font-size:var(--font-size-2xl);margin-bottom:1.5rem;color:var(--primary-color);text-align:center}.posts-list{background:var(--surface);border-radius:var(--border-radius);border:1px solid var(--border);min-height:200px}.highlights-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem}.highlight-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--shadow-sm)}.highlight-card h4{margin:0 0 1rem;color:var(--primary-color);font-size:var(--font-size-lg)}.highlight-card p{margin:0;color:var(--text-secondary);line-height:1.6;font-style:italic}@media (max-width: 768px){.auth-container{padding:1rem}.auth-card{margin:0}.tab-content{padding:1.5rem}.quick-actions,.highlights-grid{grid-template-columns:1fr}}.message{padding:.75rem 1rem;border-radius:.5rem;margin-bottom:1rem;font-size:.875rem;font-weight:500}.message-success{background-color:#dcfce7;color:#166534;border:1px solid #86efac}.message-error{background-color:#fef2f2;color:#dc2626;border:1px solid #fecaca}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;display:flex;justify-content:center;align-items:center;z-index:1000}.modal.hidden{display:none}.modal-content{background:var(--card-bg);border-radius:1rem;width:90%;max-width:600px;max-height:90vh;overflow-y:auto;box-shadow:0 25px 50px -12px #00000040}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;border-bottom:1px solid var(--border)}.modal-header h3{margin:0;color:var(--primary)}.modal-close{background:none;border:none;font-size:2rem;color:var(--text-muted);cursor:pointer;padding:0;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;border-radius:.25rem;transition:all .2s ease}.modal-close:hover{background:var(--bg-secondary);color:var(--text-primary)}.modal-body{padding:2rem}.modal-footer{padding:1rem 2rem;border-top:1px solid var(--border);display:flex;justify-content:flex-end}.profile-preview{line-height:1.6}.profile-header-preview{display:flex;gap:1rem;margin-bottom:2rem;padding:1.5rem;background:var(--bg-secondary);border-radius:.75rem}.avatar-placeholder{width:4rem;height:4rem;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700}.profile-info h2{margin:0 0 .25rem;color:var(--text-primary)}.pronouns{margin:0 0 .5rem;font-style:italic;color:var(--text-muted)}.meta-item{color:var(--text-muted);font-size:.875rem}.profile-section{margin-bottom:2rem;padding:1.5rem;background:var(--bg-secondary);border-radius:.75rem}.profile-section h3{margin:0 0 1rem;color:var(--primary);display:flex;align-items:center;gap:.5rem}.experience-item,.community-item{margin-bottom:1rem}.experience-item h4,.community-item h4{margin:0 0 .5rem;font-size:.875rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.community-preferences{margin-top:1rem;font-size:.875rem;color:var(--text-muted)}@media (max-width: 768px){.profile-header-preview{flex-direction:column;text-align:center}.modal-content{width:95%;margin:1rem}.modal-header,.modal-body,.modal-footer{padding:1rem}}.profile-page{max-width:800px;margin:0 auto}.profile-header{text-align:center;margin-bottom:2rem;padding:2rem;background:linear-gradient(135deg,#7c3aed1a,#06b6d41a);border-radius:var(--border-radius-lg)}.profile-header h2{font-size:var(--font-size-3xl);margin:0 0 1rem;color:var(--primary-color)}.profile-intro{font-size:var(--font-size-lg);color:var(--text-secondary);margin:0;line-height:1.7}.profile-form-container{background:var(--surface);border-radius:var(--border-radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.profile-form{padding:2rem}.form-section{border:1px solid var(--border-light);border-radius:var(--border-radius);padding:1.5rem;margin-bottom:2rem;background:var(--surface-alt)}.form-section legend{font-size:var(--font-size-lg);font-weight:700;color:var(--primary-color);padding:0 1rem;background:var(--surface);border-radius:var(--border-radius-sm);margin-left:-.5rem}.form-actions{display:flex;gap:1rem;justify-content:center;padding:2rem;border-top:1px solid var(--border);background:var(--surface-alt);margin:0 -2rem -2rem;border-radius:0 0 var(--border-radius-lg) var(--border-radius-lg)}.modal{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:2rem}.modal-content{background:var(--surface);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-lg);max-width:600px;width:100%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:1.5rem 2rem;border-bottom:1px solid var(--border);background:var(--surface-alt)}.modal-header h3{margin:0;font-size:var(--font-size-xl);color:var(--primary-color)}.modal-close{background:none;border:none;font-size:1.5rem;color:var(--text-muted);cursor:pointer;padding:.25rem;line-height:1;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:var(--transition)}.modal-close:hover{background:var(--border-light);color:var(--text-primary)}.modal-body{flex:1;overflow-y:auto;padding:2rem}.modal-footer{padding:1.5rem 2rem;border-top:1px solid var(--border);background:var(--surface-alt);display:flex;justify-content:flex-end;gap:1rem}.profile-preview{color:var(--text-primary)}.profile-header{display:flex;align-items:flex-start;gap:1.5rem;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:2px solid var(--border-light)}.profile-avatar{flex-shrink:0}.avatar-placeholder{width:80px;height:80px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;box-shadow:var(--shadow-md)}.profile-info h2{margin:0 0 .5rem;font-size:var(--font-size-2xl);color:var(--primary-color)}.pronouns{margin:0 0 .5rem;color:var(--text-muted);font-style:italic}.profile-meta{display:flex;gap:1rem;flex-wrap:wrap}.meta-item{color:var(--text-secondary);font-size:var(--font-size-sm);background:var(--surface-alt);padding:.25rem .75rem;border-radius:var(--border-radius-sm);border:1px solid var(--border-light)}.profile-section{margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-light)}.profile-section:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.profile-section h3{font-size:var(--font-size-xl);margin:0 0 1rem;color:var(--primary-color);display:flex;align-items:center;gap:.5rem}.profile-section p{margin:0 0 1rem;color:var(--text-secondary);line-height:1.7}.profile-section p:last-child{margin-bottom:0}.experience-item,.community-item{margin-bottom:1.5rem}.experience-item:last-child,.community-item:last-child{margin-bottom:0}.experience-item h4,.community-item h4{font-size:var(--font-size-lg);margin:0 0 .5rem;color:var(--text-primary);font-weight:600}.community-preferences{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1rem;font-size:var(--font-size-sm);color:var(--text-muted)}@media (max-width: 768px){.profile-form{padding:1.5rem}.form-section{padding:1rem}.form-actions{flex-direction:column;padding:1.5rem;margin:0 -1.5rem -1.5rem}.modal{padding:1rem}.modal-content{max-height:90vh}.modal-body,.modal-header,.modal-footer{padding:1.5rem}.profile-header{flex-direction:column;text-align:center;align-items:center}.avatar-placeholder{width:100px;height:100px;font-size:2.5rem}}.communities-page{max-width:1200px;margin:0 auto}.communities-header{text-align:center;margin-bottom:2rem;padding:2rem;background:linear-gradient(135deg,#7c3aed1a,#06b6d41a);border-radius:var(--border-radius-lg)}.communities-header h2{font-size:var(--font-size-3xl);margin:0 0 1rem;color:var(--primary-color)}.communities-intro{font-size:var(--font-size-lg);color:var(--text-secondary);line-height:1.7;max-width:600px;margin:0 auto}.communities-filters{display:flex;gap:1rem;align-items:end;margin-bottom:2rem;padding:1.5rem;background:var(--surface);border-radius:var(--border-radius);border:1px solid var(--border);flex-wrap:wrap}.filter-group{flex:1;min-width:200px}.filter-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--text-primary)}#create-community-btn{white-space:nowrap}.communities-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:1.5rem}.community-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--border-radius);padding:1.5rem;transition:var(--transition);box-shadow:var(--shadow-sm);display:flex;flex-direction:column}.community-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}.community-card.featured{border:2px solid var(--primary-color);background:linear-gradient(135deg,#7c3aed0d,#06b6d40d)}.community-card.featured:before{content:"⭐ Featured";position:absolute;top:-1px;right:1rem;background:var(--primary-color);color:#fff;padding:.25rem .75rem;border-radius:0 0 var(--border-radius-sm) var(--border-radius-sm);font-size:var(--font-size-sm);font-weight:600}.community-card.featured{position:relative}.community-card.sensitive{border-color:var(--warning-color);background:#f59e0b0d}.community-header{display:flex;align-items:flex-start;gap:1rem;margin-bottom:1rem}.community-icon{font-size:2rem;flex-shrink:0;width:3rem;height:3rem;display:flex;align-items:center;justify-content:center;background:var(--surface-alt);border-radius:50%;border:2px solid var(--border)}.community-info{flex:1;min-width:0}.community-info h3{margin:0 0 .5rem;font-size:var(--font-size-lg);color:var(--primary-color);line-height:1.3}.community-meta{display:flex;gap:1rem;flex-wrap:wrap;font-size:var(--font-size-sm);color:var(--text-muted)}.member-count,.activity-level{display:flex;align-items:center;gap:.25rem}.community-description{margin:0 0 1rem;color:var(--text-secondary);line-height:1.6;flex:1}.community-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem}.tag{background:var(--primary-color);color:#fff;padding:.25rem .75rem;border-radius:var(--border-radius-sm);font-size:var(--font-size-sm);font-weight:500}.community-actions{display:flex;gap:.75rem;margin-top:auto}.community-actions .btn{flex:1;padding:.5rem 1rem;font-size:var(--font-size-sm)}.sensitive-notice{margin-top:1rem;padding:.75rem;background:#f59e0b1a;border:1px solid var(--warning-color);border-radius:var(--border-radius-sm);font-size:var(--font-size-sm);color:var(--warning-color);font-weight:500;text-align:center}#create-community-modal .modal-content{max-width:500px}#create-community-form .form-group:last-of-type{margin-bottom:0}@media (max-width: 768px){.communities-filters{flex-direction:column;align-items:stretch}.filter-group{min-width:auto}.communities-grid{grid-template-columns:1fr}.community-actions{flex-direction:column}.community-header{flex-direction:column;align-items:center;text-align:center}.community-meta{justify-content:center}}@media (max-width: 480px){.communities-header,.communities-filters,.community-card{padding:1rem}}