:root{--background: #020617;--foreground: #ffffff;--accent: #00f5d4;--accent-glow: rgba(0, 245, 212, .4);--secondary: #0f172a;--text-muted: #94a3b8;--border: #1e293b;--error: #ef4444;--success: #22c55e}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background-color:var(--background);color:var(--foreground);min-height:100vh}.container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem}.logo{font-size:2rem;font-weight:700;margin-bottom:2rem;color:var(--accent)}.auth-card{background:var(--secondary);border:1px solid var(--border);border-radius:12px;padding:2rem;width:100%;max-width:400px}.auth-card h1{font-size:1.5rem;margin-bottom:.5rem;text-align:center}.auth-card p{color:var(--text-muted);text-align:center;margin-bottom:1.5rem;font-size:.875rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.5rem;font-size:.875rem;color:var(--text-muted)}.form-group input{width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:8px;background:var(--background);color:var(--foreground);font-size:1rem;transition:border-color .2s}.form-group input:focus{outline:none;border-color:var(--accent)}.form-group input::placeholder{color:var(--text-muted)}.btn{width:100%;padding:.75rem 1rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.btn-primary{background:var(--accent);color:var(--background)}.btn-primary:hover{box-shadow:0 0 20px var(--accent-glow)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.error-message{background:#ef44441a;border:1px solid var(--error);color:var(--error);padding:.75rem 1rem;border-radius:8px;margin-bottom:1rem;font-size:.875rem}.switch-mode{text-align:center;margin-top:1.5rem;font-size:.875rem;color:var(--text-muted)}.switch-mode button{background:none;border:none;color:var(--accent);cursor:pointer;font-size:.875rem;text-decoration:underline}.switch-mode button:hover{color:var(--foreground)}