:root{--primary-color: #6366f1;--primary-hover: #4f46e5;--bg-color: #0f172a;--card-bg: #1e293b;--text-color: #f8fafc;--text-muted: #94a3b8;--border-color: #334155;--error-color: #ef4444;--success-color: #22c55e;--transition: all .3s ease}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-color);color:var(--text-color);line-height:1.6}*{box-sizing:border-box}a{color:var(--primary-color);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary-hover)}.App{display:flex;flex-direction:column;min-height:100vh}.app-header{background-color:#1e293bcc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:1rem 2rem;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}.app-header h1{margin:0;font-size:1.5rem;font-weight:700;background:linear-gradient(to right,#818cf8,#c084fc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}main{flex:1;display:flex;justify-content:center;align-items:center;padding:2rem}.login-container,.dashboard-container{background-color:var(--card-bg);padding:2.5rem;border-radius:16px;box-shadow:0 10px 25px -5px #0000004d;width:100%;max-width:400px;border:1px solid var(--border-color);animation:fadeIn .5s ease-out forwards}.dashboard-container{max-width:600px}h2{margin-top:0;margin-bottom:1.5rem;font-size:1.8rem;text-align:center}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-size:.9rem;color:var(--text-muted)}.form-control{width:100%;padding:.75rem 1rem;border-radius:8px;border:1px solid var(--border-color);background-color:#0f172a;color:#fff;font-size:1rem;transition:var(--transition)}.form-control:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #6366f133}.btn{display:inline-block;padding:.75rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;border:none;transition:var(--transition);width:100%;font-size:1rem}.btn-primary{background:linear-gradient(135deg,var(--primary-color),var(--primary-hover));color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px #4f46e54d}.btn-danger{background-color:var(--error-color);color:#fff;width:auto;margin-top:1rem}.btn-danger:hover{background-color:#dc2626}.error{background-color:#ef44441a;color:var(--error-color);padding:.75rem;border-radius:8px;margin-bottom:1.5rem;text-align:center;font-size:.9rem;border:1px solid rgba(239,68,68,.2)}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}