:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-card: #1e293b;--bg-hover: #334155;--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--accent-primary: #3b82f6;--accent-secondary: #60a5fa;--accent-glow: rgba(59, 130, 246, .3);--success: #22c55e;--success-bg: rgba(34, 197, 94, .1);--warning: #eab308;--warning-bg: rgba(234, 179, 8, .1);--danger: #ef4444;--danger-bg: rgba(239, 68, 68, .1);--border: #334155;--radius-sm: 4px;--radius: 8px;--radius-lg: 12px;--radius-pill: 9999px;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .25);--transition: .15s ease-in-out}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}.container{max-width:800px;margin:0 auto;padding:2rem;min-height:100vh;display:flex;flex-direction:column}.header{text-align:center;padding:3rem 0}.logo{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:flex;align-items:center;justify-content:center;gap:.5rem}.logo-icon{font-size:2rem;-webkit-text-fill-color:initial}.tagline{color:var(--text-secondary);margin-top:.5rem;font-size:1.1rem}.main{flex:1;display:flex;flex-direction:column;gap:1.5rem}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow)}.card h2{font-size:1.25rem;font-weight:600;margin-bottom:1rem;color:var(--text-primary)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.card-header h2{margin-bottom:0}.form{display:flex;flex-direction:column;gap:1rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.form-group input{padding:.75rem 1rem;font-size:1rem;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);transition:border-color var(--transition),box-shadow var(--transition)}.form-group input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-glow)}.form-group input::placeholder{color:var(--text-muted)}.form-group input:disabled{opacity:.6;cursor:not-allowed}.btn{padding:.75rem 1.5rem;font-size:.9rem;font-weight:500;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px var(--accent-glow)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--border)}.btn-danger{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger)}.btn-danger:hover:not(:disabled){background:var(--danger);color:#fff}.btn-small{padding:.5rem 1rem;font-size:.8rem}.alert{padding:1rem;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:space-between;gap:1rem}.alert-error{background:var(--danger-bg);border:1px solid var(--danger);color:var(--danger)}.alert-close{background:none;border:none;color:inherit;font-size:1.5rem;cursor:pointer;padding:0;line-height:1}.loading,.empty{text-align:center;padding:2rem;color:var(--text-secondary)}.user-list{list-style:none;display:flex;flex-direction:column;gap:.75rem}.user-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:var(--bg-secondary);border-radius:var(--radius-sm);border:1px solid var(--border);transition:border-color var(--transition)}.user-item:hover{border-color:var(--accent-primary)}.user-info{display:flex;flex-direction:column;gap:.25rem}.user-email{font-weight:500;color:var(--text-primary)}.user-name{font-size:.875rem;color:var(--text-secondary)}.user-date{font-size:.75rem;color:var(--text-muted)}.tech-stack{background:linear-gradient(135deg,var(--bg-card),var(--bg-secondary))}.stack-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem}.stack-item{display:flex;align-items:center;gap:.5rem;padding:.75rem;background:var(--bg-primary);border-radius:var(--radius-sm);border:1px solid var(--border)}.stack-icon{font-size:1.25rem}.stack-name{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.footer{text-align:center;padding:2rem 0;margin-top:2rem;border-top:1px solid var(--border);color:var(--text-muted);font-size:.875rem}.footer a{color:var(--accent-primary);text-decoration:none}.footer a:hover{text-decoration:underline}@media(max-width:640px){.container{padding:1rem}.header{padding:2rem 0}.logo{font-size:2rem}.card{padding:1rem}.user-item{flex-direction:column;align-items:flex-start;gap:1rem}.user-item .btn{width:100%}}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem;background:radial-gradient(circle at top right,rgba(139,92,246,.05),transparent),radial-gradient(circle at bottom left,rgba(16,185,129,.05),transparent)}.auth-card{width:100%;max-width:440px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2.5rem;box-shadow:0 25px 50px -12px #00000080;animation:fadeIn .4s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.auth-header{text-align:center;margin-bottom:2rem}.auth-header .logo{font-size:2rem;margin-bottom:.5rem}.auth-header p{color:var(--text-secondary);font-size:.95rem}.auth-links{display:flex;justify-content:flex-end;margin-bottom:1rem}.auth-links a{font-size:.875rem;color:var(--accent-primary);text-decoration:none}.auth-footer{text-align:center;margin-top:2rem;color:var(--text-secondary);font-size:.9rem}.auth-footer a{color:var(--accent-primary);font-weight:600;text-decoration:none}.auth-footer a:hover{text-decoration:underline}.demo-banner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.875rem 1.25rem;background:linear-gradient(135deg,#8b5cf626,#3b82f626);border:1px solid rgba(139,92,246,.3);border-radius:var(--radius);margin-bottom:1.5rem;animation:demoPulse 3s ease-in-out infinite}@keyframes demoPulse{0%,to{border-color:#8b5cf64d}50%{border-color:#3b82f680}}.demo-banner-content{display:flex;align-items:center;gap:.75rem}.demo-banner-icon{font-size:1.25rem;animation:sparkle 2s ease-in-out infinite}@keyframes sparkle{0%,to{transform:scale(1) rotate(0)}50%{transform:scale(1.1) rotate(10deg)}}.demo-banner-text{display:flex;flex-direction:column;gap:.125rem}.demo-banner-text strong{font-size:.875rem;font-weight:600;background:linear-gradient(135deg,#8b5cf6,#3b82f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.demo-banner-text span{font-size:.8rem;color:var(--text-secondary)}.demo-banner-dismiss{background:transparent;border:none;color:var(--text-muted);font-size:1.5rem;cursor:pointer;padding:0;line-height:1;transition:color var(--transition)}.demo-banner-dismiss:hover{color:var(--text-primary)}.demo-badge{display:inline-flex;align-items:center;padding:.125rem .5rem;font-size:.625rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;background:linear-gradient(135deg,#8b5cf633,#3b82f633);color:#a78bfa;border:1px solid rgba(139,92,246,.3);border-radius:var(--radius-pill);margin-left:.5rem;vertical-align:middle}.demo-data-wrapper{position:relative}.demo-data-wrapper:before{content:"";position:absolute;top:-2px;left:-2px;right:-2px;bottom:-2px;background:linear-gradient(135deg,#8b5cf61a,#3b82f61a);border-radius:calc(var(--radius) + 2px);z-index:-1;pointer-events:none}.card-demo-indicator{display:flex;align-items:center;gap:.5rem}.card-demo-indicator:after{content:"Sample Data";font-size:.65rem;font-weight:600;letter-spacing:.03em;text-transform:uppercase;color:#a78bfa;opacity:.8}@media(max-width:640px){.demo-banner{flex-direction:column;align-items:flex-start;gap:.75rem}.demo-banner-dismiss{position:absolute;top:.5rem;right:.75rem}.demo-banner-text{padding-right:2rem}}.spinner{width:2.5rem;height:2.5rem;border:4px solid var(--border);border-top-color:var(--accent-primary);border-radius:50%;animation:spinner .8s linear infinite;margin:0 auto}@keyframes spinner{to{transform:rotate(360deg)}}