:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent: #3b82f6;--accent-hover: #2563eb;--success: #22c55e;--error: #ef4444;--warning: #f59e0b;--border: #475569}.light{--bg-primary: #ffffff;--bg-secondary: #f1f5f9;--bg-tertiary: #e2e8f0;--text-primary: #0f172a;--text-secondary: #64748b;--border: #cbd5e1}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.header{background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:1rem 0;position:sticky;top:0;z-index:100}.header-inner{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:.5rem}.logo-icon{font-size:1.75rem}.nav{display:flex;align-items:center;gap:1rem}.btn{padding:.625rem 1.25rem;border-radius:.5rem;font-weight:500;font-size:.9rem;cursor:pointer;border:none;transition:all .2s;display:inline-flex;align-items:center;gap:.5rem}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover{background:var(--border)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{color:var(--text-primary)}.form-group{margin-bottom:1.25rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-secondary)}.form-input{width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:.5rem;background:var(--bg-primary);color:var(--text-primary);font-size:1rem;transition:border-color .2s}.form-input:focus{outline:none;border-color:var(--accent)}.form-input.error{border-color:var(--error)}.form-hint{font-size:.8rem;color:var(--text-secondary);margin-top:.25rem}.form-error{font-size:.8rem;color:var(--error);margin-top:.25rem}.auth-page{min-height:100vh;display:flex;flex-direction:column}.auth-content{flex:1;display:flex;align-items:center;justify-content:center;padding:2rem 1rem}.auth-card{width:100%;max-width:400px;background:var(--bg-secondary);border-radius:1rem;padding:2rem;border:1px solid var(--border)}.auth-title{font-size:1.75rem;font-weight:700;margin-bottom:.5rem;text-align:center}.auth-subtitle{color:var(--text-secondary);text-align:center;margin-bottom:2rem}.auth-footer{text-align:center;margin-top:1.5rem;color:var(--text-secondary)}.alert{padding:1rem;border-radius:.5rem;margin-bottom:1rem}.alert-error{background:#ef44441a;color:var(--error);border:1px solid var(--error)}.alert-success{background:#22c55e1a;color:var(--success);border:1px solid var(--success)}.hero{padding:6rem 0;text-align:center}.hero-title{font-size:3rem;font-weight:800;margin-bottom:1.5rem;line-height:1.2}.hero-title span{color:var(--accent)}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);max-width:600px;margin:0 auto 2.5rem}.hero-cta{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.features{padding:4rem 0;background:var(--bg-secondary)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:2rem}.feature-card{background:var(--bg-primary);border:1px solid var(--border);border-radius:1rem;padding:2rem;text-align:center}.feature-icon{font-size:2.5rem;margin-bottom:1rem}.feature-title{font-size:1.25rem;font-weight:600;margin-bottom:.5rem}.feature-desc{color:var(--text-secondary)}.inbox-layout{display:flex;min-height:calc(100vh - 60px)}.sidebar{width:250px;background:var(--bg-secondary);border-right:1px solid var(--border);padding:1.5rem;flex-shrink:0}.sidebar-nav{list-style:none}.sidebar-item{margin-bottom:.5rem}.sidebar-link{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:.5rem;color:var(--text-secondary);transition:all .2s}.sidebar-link:hover,.sidebar-link.active{background:var(--bg-tertiary);color:var(--text-primary);text-decoration:none}.inbox-main{flex:1;padding:2rem}.email-address-box{background:var(--bg-secondary);border:1px solid var(--border);border-radius:.75rem;padding:1.5rem;margin-bottom:2rem}.email-address-label{font-size:.875rem;color:var(--text-secondary);margin-bottom:.5rem}.email-address{font-size:1.25rem;font-weight:600;display:flex;align-items:center;gap:.75rem}.copy-btn{padding:.5rem;background:var(--bg-tertiary);border:none;border-radius:.375rem;color:var(--text-secondary);cursor:pointer}.copy-btn:hover{color:var(--text-primary)}.empty-inbox{text-align:center;padding:4rem 2rem;background:var(--bg-secondary);border-radius:1rem;border:1px solid var(--border)}.empty-icon{font-size:4rem;margin-bottom:1rem;opacity:.5}.empty-title{font-size:1.5rem;font-weight:600;margin-bottom:.5rem}.empty-desc{color:var(--text-secondary)}.theme-toggle{background:var(--bg-tertiary);border:none;padding:.5rem;border-radius:.5rem;cursor:pointer;font-size:1.25rem;color:var(--text-secondary)}.theme-toggle:hover{color:var(--text-primary)}.footer{background:var(--bg-secondary);border-top:1px solid var(--border);padding:2rem 0;margin-top:auto}.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.footer-links{display:flex;gap:1.5rem}.footer-links a{color:var(--text-secondary);font-size:.875rem}.footer-links a:hover{color:var(--text-primary)}.footer-copy{color:var(--text-secondary);font-size:.875rem}.loading{display:flex;align-items:center;justify-content:center;min-height:100vh;font-size:1.25rem;color:var(--text-secondary)}.legal-page{padding:3rem 0}.legal-content{max-width:800px;margin:0 auto}.legal-content h1{font-size:2rem;margin-bottom:1rem}.legal-content h2{font-size:1.5rem;margin:2rem 0 1rem}.legal-content p{margin-bottom:1rem;color:var(--text-secondary)}@media (max-width: 768px){.hero-title{font-size:2rem}.sidebar{display:none}.footer-inner{flex-direction:column;text-align:center}}